Method, chip and wireless receiver for receiving a wireless signal

Abstract

The embodiment of the application discloses a method for receiving wireless signals, a chip and a wireless receiver. The method for receiving wireless signals comprises the following steps: receiving a first radio frequency signal and a second radio frequency signal through a first antenna and a second antenna respectively; wherein the first radio frequency signal comprises a first synchronization sequence, and the second radio frequency signal comprises a second synchronization sequence; correlating and synchronizing the first synchronization sequence and the second synchronization sequence with a local synchronization sequence respectively to obtain corresponding first synchronization results and second synchronization results; determining a first signal-to-noise ratio parameter corresponding to the first radio frequency signal and a second signal-to-noise ratio parameter corresponding to the second radio frequency signal according to the first synchronization results and the second synchronization results respectively; and performing a merging processing on the first radio frequency signal and the second radio frequency signal based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to a method, chip, and wireless receiver for receiving wireless signals. Background Technology

[0002] Currently, with the development of industry and technology, the application scenarios of Bluetooth have been greatly expanded, and Bluetooth communication will play a very important role in more and more fields and scenarios. However, scenarios such as remote vehicle diagnostics and monitoring in the automotive field, lathe monitoring and recording in industrial production, and ward monitoring in the medical field are different from the previous Bluetooth headset and mobile phone data transmission. They all pose greater challenges to the transmission distance of Bluetooth. The short transmission distance of the current common Bluetooth technology is gradually becoming more and more apparent and can no longer meet the requirements. Summary of the Invention

[0003] This application provides a method, chip, and wireless receiver for receiving wireless signals, which improves the receiving sensitivity of the wireless receiver, thereby meeting the requirements of Bluetooth application scenarios for longer-distance transmission.

[0004] The technical solution of this application embodiment is implemented as follows:

[0005] In a first aspect, embodiments of this application provide a method for receiving wireless signals, the method comprising:

[0006] A first radio frequency signal and a second radio frequency signal are received by a first antenna and a second antenna, respectively; wherein, the first radio frequency signal includes a first synchronization sequence, and the second radio frequency signal includes a second synchronization sequence;

[0007] The first synchronization sequence and the second synchronization sequence are respectively synchronized with the local synchronization sequence to obtain the corresponding first synchronization result and second synchronization result;

[0008] Based on the first synchronization result and the second synchronization result, the first signal-to-noise ratio parameter corresponding to the first radio frequency signal and the second signal-to-noise ratio parameter corresponding to the second radio frequency signal are determined respectively.

[0009] The first radio frequency signal and the second radio frequency signal are merged based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter.

[0010] Secondly, embodiments of this application provide a chip, the chip including a processor, the processor being configured to execute:

[0011] A first radio frequency signal and a second radio frequency signal are received by a first antenna and a second antenna, respectively; wherein, the first radio frequency signal includes a first synchronization sequence, and the second radio frequency signal includes a second synchronization sequence;

[0012] The first synchronization sequence and the second synchronization sequence are respectively synchronized with the local synchronization sequence to obtain the corresponding first synchronization result and second synchronization result;

[0013] Based on the first synchronization result and the second synchronization result, the first signal-to-noise ratio parameter corresponding to the first radio frequency signal and the second signal-to-noise ratio parameter corresponding to the second radio frequency signal are determined respectively.

[0014] The first radio frequency signal and the second radio frequency signal are merged based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter.

[0015] Thirdly, embodiments of this application provide a wireless receiver, which includes: a first antenna, a second antenna, a first radio frequency link, a second radio frequency link, and a synchronization combining module; wherein...

[0016] The first antenna is used to receive a first radio frequency signal; wherein the first radio frequency signal includes a first synchronization sequence;

[0017] The second antenna is used to receive a second radio frequency signal; wherein the second radio frequency signal includes a second synchronization sequence;

[0018] The first radio frequency link and the second radio frequency link are used to preprocess the first radio frequency signal and the second radio frequency signal respectively, and input the processed first radio frequency signal and the second radio frequency signal to the synchronization merging module;

[0019] The synchronization merging module is used to perform correlation synchronization between the first synchronization sequence and the second synchronization sequence and the local synchronization sequence to obtain corresponding first synchronization result and second synchronization result; determine the first signal-to-noise ratio parameter corresponding to the first radio frequency signal and the second signal-to-noise ratio parameter corresponding to the second radio frequency signal based on the first synchronization result and the second synchronization result; and perform merging processing on the first radio frequency signal and the second radio frequency signal based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter.

[0020] This application provides a method, chip, and wireless receiver for receiving wireless signals. The wireless receiver receives a first radio frequency (RF) signal and a second RF signal via a first antenna and a second antenna, respectively. The first RF signal includes a first synchronization sequence, and the second RF signal includes a second synchronization sequence. The first and second synchronization sequences are correlated and synchronized with a local synchronization sequence to obtain corresponding first and second synchronization results. A first signal-to-noise ratio (SNR) parameter corresponding to the first RF signal and a second SNR parameter corresponding to the second RF signal are determined based on the first and second synchronization results, respectively. The first and second RF signals are then merged based on the first and second SNR parameters. In other words, in this application, the wireless receiver is configured with multiple antennas and multiple RF links in a one-to-one correspondence. After acquiring multiple RF signals through multiple antennas and multiple RF links, the multiple RF signals can be correlated and synchronized separately. Then, the multiple data streams after synchronization processing are merged and combined with the corresponding multiple SNR parameters to obtain a single merged data stream, which is then further demodulated to obtain maximum gain. Therefore, the method for receiving wireless signals proposed in this application improves the receiving sensitivity of the wireless receiver, thereby meeting the requirements of Bluetooth applications for longer-distance transmission. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a wireless receiver;

[0022] Figure 2 Implementation flow diagram of the method for receiving wireless signals Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the signal processing architecture of the radio frequency link;

[0024] Figure 4 This is a schematic diagram of antenna gain;

[0025] Figure 5 Implementation flow diagram of the method for receiving wireless signals Figure 2 ;

[0026] Figure 6 Implementation flow diagram of the method for receiving wireless signals Figure 3 ;

[0027] Figure 7 This is a schematic diagram of a common wireless receiver.

[0028] Figure 8 This is a schematic diagram illustrating the configuration of the wireless receiver proposed in an embodiment of this application;

[0029] Figure 9 This is a schematic diagram illustrating the implementation process of wireless signal reception.

[0030] Figure 10 This is a schematic diagram of the components of a wireless receiver;

[0031] Figure 11 This is a schematic diagram of the chip's structure. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining the relevant application and not for limiting the application. Furthermore, it should be noted that, for ease of description, only the parts related to the relevant application are shown in the accompanying drawings.

[0033] Bluetooth is a wireless technology standard that enables short-range data exchange between fixed devices, mobile devices, and personal area networks (PANs). For example, it uses Ultra High Frequency (UHF) radio waves in the 2.4–2.485 GHz ISM (Industrial Scientific Medical Band) band for data exchange. The ISM band is primarily open to use by three main sectors: industrial, scientific, and medical. The ISM band is unlicensed, meaning users do not require a license and there are no usage restrictions. While the ISM band allows anyone to transmit data freely, power is limited to a very short distance between transmitter and receiver, preventing interference between different users.

[0034] Bluetooth can connect multiple devices, overcoming the problem of data synchronization. Transceiver devices generally use a single antenna for transmitting and a single antenna for receiving. The main Bluetooth formats include Bluetooth Basic Rate (BR), Bluetooth Enhanced Data Rate (EDR), and Bluetooth Low Energy (BLE). The communication range is generally within 10m, and the working distance is relatively short.

[0035] Antenna gain is used to quantitatively describe the degree to which an antenna concentrates and radiates input power (energy). From a communication perspective, it is the ability to generate a signal in a certain direction and range.

[0036] Antenna gain refers to the ratio of the power density of the signal produced by an actual antenna and an ideal radiating element at the same point in space, under the condition of equal input power. It quantitatively describes the degree to which an antenna concentrates the input power for radiation. Gain is obviously closely related to the antenna pattern; the narrower the main lobe and the smaller the side lobes, the higher the gain. Antenna gain measures an antenna's ability to transmit and receive signals in a specific direction, and it is one of the most important parameters for selecting base station antennas. Generally, increasing gain mainly relies on reducing the beamwidth of radiation in the vertical plane while maintaining omnidirectional radiation performance in the horizontal plane. Antenna gain is extremely important for the operational quality of mobile communication systems because it determines the signal level at the cell edge. Increasing gain can increase the network coverage in a certain direction or increase the gain margin within a certain range. Any cellular system is a bidirectional process; increasing antenna gain can simultaneously reduce the bidirectional system gain budget margin. In addition, parameters representing antenna gain include dBd and dBi. dBi is the gain relative to a point source antenna, where radiation is uniform in all directions; dBd is the gain relative to a symmetrical array antenna. dBi = dBd + 2.15. Under the same conditions, the higher the gain, the farther the radio waves can travel.

[0037] Because the initial Bluetooth solution was designed only for short-range indoor communication and had low transmission power, its transmission distance was relatively short. However, with the development of industry and technology, the application scenarios of Bluetooth have greatly expanded. Whether it's remote vehicle diagnostics and monitoring in the automotive field, lathe monitoring and recording in industrial production, or ward monitoring in the medical field, Bluetooth communication will play a crucial role. But these scenarios differ from previous Bluetooth headset and mobile phone data transmissions; they pose greater challenges to Bluetooth's transmission distance. The current short-range limitation of common Bluetooth technology is becoming increasingly apparent and is gradually failing to meet requirements. Therefore, a new Bluetooth signal receiving solution is needed to improve receiving sensitivity and extend the transmission range.

[0038] To address the aforementioned issues, in embodiments of this application, a wireless receiver receives a first radio frequency (RF) signal and a second RF signal via a first antenna and a second antenna, respectively. The first RF signal includes a first synchronization sequence, and the second RF signal includes a second synchronization sequence. The first and second synchronization sequences are respectively correlated and synchronized with a local synchronization sequence to obtain corresponding first and second synchronization results. A first signal-to-noise ratio (SNR) parameter corresponding to the first RF signal and a second SNR parameter corresponding to the second RF signal are determined based on the first and second synchronization results, respectively. The first and second RF signals are then merged based on the first and second SNR parameters. In other words, in embodiments of this application, the wireless receiver is configured with multiple antennas and multiple RF links in a one-to-one correspondence. After acquiring multiple RF signals through multiple antennas and multiple RF links, the multiple RF signals can be synchronized separately, and then the multiple synchronized data streams can be merged using the corresponding multiple SNR parameters to obtain a single merged data stream. Subsequent demodulation processing is then performed to obtain maximum gain. Therefore, the method for receiving wireless signals proposed in this application improves the receiving sensitivity of the wireless receiver, thereby meeting the requirements of Bluetooth applications for longer-distance transmission.

[0039] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0040] One embodiment of this application provides a method for receiving wireless signals, which is applied in a wireless receiver, wherein the wireless receiver can be configured with a plurality of antennas and a plurality of radio frequency links that correspond one-to-one.

[0041] For example, in the embodiments of this application, Figure 1 This is a schematic diagram of the structure of a wireless receiver, such as... Figure 1 As shown, the wireless receiver can be configured with multiple antennas (e.g., three antennas) and multiple radio frequency links (e.g., three radio frequency links) corresponding one-to-one with each antenna. The wireless receiver also includes a synchronization merging module and a demodulation module. Multiple signals received by the multiple antennas, after passing through the radio frequency links, are input to the synchronization merging module for synchronization and merging processing. Finally, a single signal is output to the demodulation module for subsequent demodulation processing.

[0042] In other words, in the embodiments of this application, compared with the hardware structure of common wireless receivers, the hardware modifications of the wireless receiver proposed in this application are less. It only requires the addition of corresponding antennas and radio frequency links, and modification of the processing of the synchronization merging module. The subsequent Bluetooth demodulation module does not need any modifications.

[0043] It should be noted that, in the embodiments of this application, the wireless signal receiving method proposed in the embodiments of this application can be described using two antennas (the first antenna and the second antenna) and two radio frequency links (the first radio frequency link and the second radio frequency link) that correspond one-to-one.

[0044] Furthermore, in the embodiments of this application, Figure 2 Implementation flow diagram of the method for receiving wireless signals Figure 1 ,like Figure 2 As shown in the embodiments of this application, the method for a wireless receiver to receive wireless signals may include the following steps:

[0045] Step 101: Receive a first radio frequency signal and a second radio frequency signal through a first antenna and a second antenna, respectively; wherein the first radio frequency signal includes a first synchronization sequence and the second radio frequency signal includes a second synchronization sequence.

[0046] In embodiments of this application, the wireless receiver can first receive a first radio frequency signal and a second radio frequency signal. Specifically, the wireless receiver can receive the corresponding first and second radio frequency signals via a configured first antenna and second antenna, respectively.

[0047] For example, in an embodiment of this application, if the wireless receiver is configured with two antennas, then two radio frequency signals can be received through these two antennas respectively.

[0048] Furthermore, in the embodiments of this application, the first radio frequency link and the second radio frequency link configured in the wireless receiver, which correspond one-to-one with the first antenna and the second antenna, can perform corresponding preprocessing on the received first radio frequency signal and the second radio frequency signal, and then input the preprocessed first radio frequency signal and the second radio frequency signal to the synchronization merging module for subsequent synchronization processing and merging processing.

[0049] It should be noted that, in the embodiments of this application, after the wireless receiver receives the first radio frequency signal and the second radio frequency signal, it can use the first radio frequency link and the second radio frequency link to perform preprocessing such as signal amplification, mixing, analog filtering, AD sampling, and low-pass filtering on the corresponding first radio frequency signal and the second radio frequency signal, respectively.

[0050] For example, in the embodiments of this application, Figure 3 A schematic diagram of the signal processing architecture of the radio frequency link, such as... Figure 3As shown, the architecture of a wireless receiver for signal processing based on the radio frequency link can include a low-noise amplifier (LNA), an integrator, a mixer, a trans-impedance amplifier (TIA), an analog filter, an analog-to-digital converter (ADC), and a digital filter. The signal received by the antenna (RF signal) is passed through the LNA and integrator before being transmitted to the mixer and TIA. After being filtered by the analog filter, it is then transmitted to the ADC and digital filter. The LNA amplifies the RF signal received by the antenna, the integrator integrates the amplified RF signal, the ADC performs AD conversion on the integrated signal to obtain the corresponding digital signal, and the digital filter filters the input digital signal. A low-pass filter (LPF) can be selected for low-pass filtering.

[0051] Furthermore, in the embodiments of this application, after receiving the first radio frequency signal and the second radio frequency signal through the first antenna and the second antenna, and performing corresponding processing through the first radio frequency link and the second radio frequency link, the processed first radio frequency signal and the second radio frequency signal can be transmitted to the merging and synchronization module for further synchronization and merging processing.

[0052] It is understood that, in the embodiments of this application, the signal transmitted to the merging and synchronization module can be the corresponding IQ data. That is, the synchronization and merging processing implemented by the wireless receiver is performed on the IQ data corresponding to the first antenna and the second antenna.

[0053] Furthermore, in the embodiments of this application, the first radio frequency signal includes a first synchronization sequence, and the second radio frequency signal includes a second synchronization sequence.

[0054] Step 102: Synchronize the first synchronization sequence and the second synchronization sequence with the local synchronization sequence respectively to obtain the corresponding first synchronization result and second synchronization result.

[0055] In the embodiments of this application, after the wireless receiver receives the first radio frequency signal and the second radio frequency signal through the first antenna and the second antenna, it can first perform correlation synchronization on the first synchronization sequence in the first radio frequency signal and the second synchronization sequence in the second radio frequency signal, thereby obtaining the corresponding first synchronization result and second synchronization result.

[0056] It should be noted that, in the embodiments of this application, before using the local synchronization sequence for related synchronization, the wireless receiver can first perform differential processing on the first radio frequency signal and the second radio frequency signal respectively.

[0057] For example, in an embodiment of this application, the wireless receiver can first perform differential processing on the first radio frequency signal and the second radio frequency signal to generate corresponding differential radio frequency signals; then, it can perform relevant synchronization based on the differential radio frequency signals and the local synchronization sequence to generate corresponding first synchronization results and second synchronization results.

[0058] It is understood that, in the embodiments of this application, considering the impact of the initial frequency offset on the synchronization performance, the wireless receiver can first perform differential processing on the radio frequency signal before performing correlation synchronization to obtain the differential radio frequency signal, and then perform correlation synchronization on the differential radio frequency signal through the local synchronization sequence to obtain the synchronized data, namely the first synchronization result and the second synchronization result.

[0059] For example, in the embodiments of this application, for the radio frequency signal corresponding to each antenna, the wireless receiver can perform conjugate multiplication calculation at 1µs sampling intervals to complete the differential operation of each radio frequency signal, thereby reducing the impact of the initial frequency offset on the subsequent correlation synchronization performance. For example, differential processing is performed on the first radio frequency signal received by the first antenna at a first time and the third radio frequency signal received by the first antenna at a second time; differential processing is also performed on the second radio frequency signal received by the second antenna at a first time and the fourth radio frequency signal received by the second antenna at a second time. The first reception time and the second reception time can differ by a preset time interval, such as 1µs.

[0060] It should be noted that, in the embodiments of this application, the local synchronization sequence can be generated by the wireless receiver according to a pre-agreed address. That is, the wireless receiver pre-agres to the address information, and then generates a local synchronization sequence according to the address information. Finally, when performing related synchronization, the first synchronization sequence and the second synchronization sequence can be correlated and synchronized respectively by the correlation between the local synchronization sequence and the first synchronization sequence and the second synchronization sequence, so as to obtain multiple synchronized data, namely the corresponding first synchronization result, second synchronization result and second synchronization result.

[0061] Furthermore, in the embodiments of this application, the wireless receiver can use the same local synchronization sequence to correlate and synchronize the synchronization sequences of radio frequency signals received by different antennas. Correspondingly, the wireless receiver can also pre-process the local synchronization sequence differentially, meaning the local synchronization sequence itself has undergone the corresponding differential operation.

[0062] Step 103: Determine the first signal-to-noise ratio parameter corresponding to the first radio frequency signal and the second signal-to-noise ratio parameter corresponding to the second radio frequency signal based on the first synchronization result and the second synchronization result, respectively.

[0063] In the embodiments of this application, after the wireless receiver performs correlation synchronization between the first synchronization sequence and the second synchronization sequence and the local synchronization sequence, and obtains the corresponding first synchronization result and second synchronization result, it can further determine the first signal-to-noise ratio parameter corresponding to the first radio frequency signal and the second signal-to-noise ratio parameter corresponding to the second radio frequency signal based on the first synchronization result and the second synchronization result, respectively.

[0064] Furthermore, in the embodiments of this application, after the wireless receiver performs correlation synchronization on the first synchronization sequence in the first radio frequency signal and the second synchronization sequence in the second radio frequency signal respectively, and obtains the synchronized first synchronization result and the second synchronization result, it can further determine the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter corresponding to the first radio frequency link and the second radio frequency link based on the first synchronization result and the second synchronization result.

[0065] It should be noted that, in the embodiments of this application, after completing the relevant synchronization of each radio frequency signal and obtaining the synchronization result corresponding to each radio frequency signal, the wireless receiver can further use the synchronization result to perform signal-to-noise ratio (SNR) estimation processing to obtain the corresponding SNR value, that is, the SNR parameter corresponding to each radio frequency link.

[0066] Step 104: Combine the first radio frequency signal and the second radio frequency signal based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter.

[0067] In the embodiments of this application, after the wireless receiver performs correlation synchronization on the first radio frequency signal and the second radio frequency signal respectively, and determines the first signal-to-noise ratio (SNR) parameter and the second SNR parameter corresponding to the first radio frequency link and the second radio frequency link based on the first synchronization result and the second synchronization result, it can further perform merging processing on the first radio frequency signal and the second radio frequency signal according to the first SNR parameter and the second SNR parameter.

[0068] Furthermore, in embodiments of this application, the wireless receiver can perform merging processing on the first radio frequency signal and the second radio frequency signal based on a comparison of the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter.

[0069] For example, in an embodiment of this application, when merging a first radio frequency (RF) signal and a second RF signal based on a comparison of a first signal-to-noise ratio (SNR) parameter and a second SNR parameter, if the absolute value of the difference between the first SNR parameter and the second SNR parameter is less than or equal to a preset threshold, then merging can be performed. Furthermore, the ratio between the first SNR parameter and the second SNR parameter can be determined, and the first RF signal and the second RF signal can be merged according to this ratio.

[0070] For example, in an embodiment of this application, when merging the first radio frequency signal and the second radio frequency signal based on a comparison of a first signal-to-noise ratio (SNR) parameter and a second SNR parameter, if both the first SNR parameter and the second SNR parameter fall within a preset SNR range, then merging can be performed. Furthermore, the ratio between the first SNR parameter and the second SNR parameter can be determined, and the first radio frequency signal and the second radio frequency signal can be merged according to this ratio.

[0071] It is understood that, in the embodiments of this application, after determining the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter, the wireless receiver can first determine whether the merging condition is met. If the merging condition is met, the wireless receiver can use the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter to merge the first radio frequency signal and the second radio frequency signal, thereby obtaining one merged signal. If the merging condition is not met, the wireless receiver will no longer perform the merging process of the first radio frequency signal and the second radio frequency signal, but will only perform subsequent demodulation processing on one of the signals.

[0072] It should be noted that, in the embodiments of this application, when determining whether the merging condition is met, if the absolute value of the difference between the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter is less than or equal to a preset threshold, then the merging condition can be determined to be met; otherwise, the merging condition is determined not to be met. The preset threshold can be any value; for example, it can be 6 dB or 9 dB, and this embodiment of the application does not impose a specific limitation.

[0073] For example, in an embodiment of this application, it is assumed that the wireless receiver is configured with two antennas and receives two radio frequency signals respectively. If the absolute value of the difference between the signal-to-noise ratio parameters corresponding to the two radio frequency signals is less than a preset threshold, then the two radio frequency signals can be considered to meet the merging condition, and therefore the merging process of the two radio frequency signals can continue to be performed.

[0074] It should be noted that, in the embodiments of this application, when determining whether the merging conditions are met, if both the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter fall within a preset signal-to-noise ratio range, then the merging conditions can be determined to be met; otherwise, the merging conditions are determined not to be met. The preset signal-to-noise ratio range can be a numerical range, and this embodiment of the application does not impose a specific limitation.

[0075] For example, in an embodiment of this application, it is assumed that the wireless receiver is configured with two antennas and receives two radio frequency signals respectively. If the signal-to-noise ratio parameters corresponding to the two radio frequency signals are both within the preset signal-to-noise ratio range, then it can be considered that the merging condition is met, and therefore the merging process of the two radio frequency signals can continue to be performed.

[0076] In other words, in the embodiments of this application, the signal-to-noise ratio (SNR) parameter corresponding to each radio frequency link determined by the wireless receiver can be used to determine whether to merge the first radio frequency signal and the second radio frequency signal. That is, the wireless receiver can perform the judgment on whether to perform merging processing through the first SNR parameter and the second SNR parameter.

[0077] Furthermore, in the embodiments of this application, it is assumed that the wireless receiver is configured with multiple antennas (e.g., 5) to receive multiple radio frequency signals respectively. After determining multiple signal-to-noise ratio parameters, the wireless receiver can also use these multiple signal-to-noise ratio parameters to filter the multiple radio frequency signals, and then merge the filtered radio frequency signals.

[0078] It is understood that, in the embodiments of this application, when filtering multiple radio frequency signals, the wireless receiver may also use the above-mentioned preset threshold or the above-mentioned preset signal-to-noise ratio range to filter out the radio frequency signals corresponding to the signal-to-noise ratio parameters that do not meet the above-mentioned preset threshold or the above-mentioned preset signal-to-noise ratio range, and only merge the remaining filtered radio frequency signals.

[0079] For example, in an embodiment of this application, it is assumed that the wireless receiver is configured with 3 antennas and receives 3 radio frequency signals, namely signal 1, signal 2 and signal 3. If the difference between the signal-to-noise ratio parameter of signal 1 and signal 2 and signal 3 is greater than a preset threshold, then signal 1 can be discarded and only the radio frequency signals of signal 2 and signal 3 can be merged.

[0080] For example, in an embodiment of this application, it is assumed that the wireless receiver is configured with 3 antennas and receives 3 radio frequency signals, namely signal 1, signal 2 and signal 3. If the signal-to-noise ratio parameter corresponding to signal 3 is not within the preset signal-to-noise ratio range, then signal 3 can be discarded, and only the radio frequency signals signal 1 and signal 2 are merged to obtain the merged signal.

[0081] Furthermore, in the embodiments of this application, when the first radio frequency signal and the second radio frequency signal are combined based on the comparison of the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter, the wireless receiver can combine the first radio frequency signal and the second radio frequency signal proportionally according to the signal-to-noise ratio parameters corresponding to the first radio frequency link and the second radio frequency link.

[0082] It should be noted that, in the embodiments of this application, when the wireless receiver uses the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter to combine the first radio frequency signal and the second radio frequency signal proportionally, it can first determine multiple weighting coefficients based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter; then it can perform weighted calculations on the multiple differential radio frequency signals according to the weighting coefficients.

[0083] In other words, in the embodiments of this application, the signal-to-noise ratio (SNR) parameter corresponding to each radio frequency link determined by the wireless receiver can be used to determine the weighting coefficient in the weighting calculation. That is, the wireless receiver can perform the weighting operation in the merging process through the first SNR parameter and the second SNR parameter.

[0084] For example, in an embodiment of this application, when the wireless receiver determines the weighting coefficient based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter, it can use the signal-to-noise ratio parameter corresponding to each radio frequency link to determine the weighting parameter corresponding to the corresponding radio frequency signal in proportion.

[0085] Furthermore, in the embodiments of this application, after the wireless receiver performs merging processing based on the first signal-to-noise ratio (SNR) parameter and the second SNR parameter, it can continue to use the local synchronization sequence to perform correlation synchronization on the synchronization sequence included in the merged radio frequency signal, thereby generating a third synchronization result. Specifically, by performing correlation synchronization between the synchronization sequence included in the merged radio frequency signal and the local synchronization sequence, the corresponding third synchronization result can be obtained.

[0086] It is understood that, in the embodiments of this application, the first related synchronization performed in step 102 above can be coarse synchronization, and the final result includes synchronized data corresponding to the first radio frequency signal and the second radio frequency signal, namely the first synchronization result and the second synchronization result; while the second related synchronization can be fine synchronization, and the final result is a synchronization data corresponding to the merged radio frequency signal (merged radio frequency signal), namely the third synchronization result.

[0087] In other words, in the embodiments of this application, in order to further improve the synchronization performance, the wireless receiver can combine the first radio frequency signal and the second radio frequency signal in proportion according to the signal-to-noise ratio parameters corresponding to the first radio frequency link and the second radio frequency link, and then use the local synchronization sequence to perform relevant synchronization on the combined result again.

[0088] It should be noted that, in the embodiments of this application, the third synchronization result can be used to determine the sequence length and starting position corresponding to the first radio frequency signal and the second radio frequency signal.

[0089] Furthermore, in the embodiments of this application, after obtaining the third synchronization result through fine synchronization, the wireless receiver can use the third synchronization result to perform phase estimation on the first radio frequency signal and the second radio frequency signal respectively, thereby determining the initial phase corresponding to each radio frequency signal, that is, obtaining the phase parameter.

[0090] Accordingly, in the embodiments of this application, after completing phase estimation and obtaining the phase parameters corresponding to each radio frequency signal, the wireless receiver can perform phase compensation on the first radio frequency signal and / or the second radio frequency signal according to the phase parameters to obtain the phase-compensated data.

[0091] It should be noted that, in the embodiments of this application, the phase-compensated data obtained by performing phase compensation on the first radio frequency signal and / or the second radio frequency signal based on the phase parameters obtained after phase estimation includes both the radio frequency signal that has undergone phase compensation and the radio frequency signal that has not undergone phase compensation. For example, if only the first radio frequency signal is phase-compensated, the phase-compensated data may include the second radio frequency signal and the phase-compensated first radio frequency signal. If only the second radio frequency signal is phase-compensated, the phase-compensated data may include the first radio frequency signal and the phase-compensated second radio frequency signal. If both the first and second radio frequency signals are phase-compensated, the phase-compensated data may include the phase-compensated first radio frequency signal and the phase-compensated second radio frequency signal.

[0092] Furthermore, in the embodiments of this application, after performing phase compensation on the first radio frequency signal and / or the second radio frequency signal based on the phase parameters obtained after phase estimation, the data after phase compensation, the first signal-to-noise ratio parameter, and the second signal-to-noise ratio parameter can be combined to generate one data stream, i.e., obtain the combined signal.

[0093] In other words, in the embodiments of this application, the wireless receiver can perform initial phase estimation on the radio frequency signal corresponding to each antenna based on the synchronization result after fine synchronization (third synchronization result), and then perform phase compensation processing on the corresponding radio frequency signal according to the obtained initial phase (phase parameter), and finally merge the phase-compensated data.

[0094] It is understood that, in the embodiments of this application, the differential first radio frequency signal and the second radio frequency signal can be merged first according to the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter to obtain the merged radio frequency signal; then, correlation synchronization is performed according to the merged radio frequency signal and the local synchronization sequence, and the phase parameter is determined according to the third synchronization result after correlation synchronization; then, phase compensation can be performed based on the phase parameter, and finally, the merged data, the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter are used again for merging.

[0095] It should be noted that, in the embodiments of this application, the wireless receiver can use a first signal-to-noise ratio (SNR) parameter and a second SNR parameter to proportionally merge the phase-compensated data. Specifically, multiple weighting coefficients can be determined first based on the first and second SNR parameters; then, the phase-compensated data can be weighted according to these weighting coefficients to obtain the merged signal.

[0096] For example, in an embodiment of this application, when the wireless receiver determines multiple weighting coefficients based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter, it can use the signal-to-noise ratio parameter corresponding to each radio frequency link to determine the weighting parameter corresponding to the corresponding radio frequency signal in proportion.

[0097] In other words, in the embodiments of this application, the signal-to-noise ratio parameter corresponding to each radio frequency link determined by the wireless receiver can be used to determine the weighting coefficient in the subsequent merging process of the first radio frequency signal and the second radio frequency signal.

[0098] It is understood that in the embodiments of this application, when performing the merging processing of the first radio frequency signal and the second radio frequency signal, the maximum gain can be obtained if the weighting coefficients corresponding to the first radio frequency signal and the second radio frequency signal are all equal. For example, for a wireless receiver with two antennas, if the two corresponding signal-to-noise ratio parameters are equal, the two determined weighting coefficients are also equal, and a maximum gain of 3dB can be obtained; for a wireless receiver with four antennas, if the four corresponding signal-to-noise ratio parameters are equal, the four determined weighting coefficients are also equal, and a maximum gain of 6dB can be obtained.

[0099] Furthermore, in the embodiments of this application, after the phase-compensated first radio frequency signal and the second radio frequency signal are combined according to the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter to obtain a combined signal, the wireless receiver can then perform subsequent demodulation processing on the combined signal through the demodulation module.

[0100] It is understood that, in the embodiments of this application, if it is determined based on the comparison of the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter that the merging condition is not met, the wireless receiver can select the signal to be demodulated from the first radio frequency signal and the second radio frequency signal according to the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter; and then the demodulated signal can be further demodulated.

[0101] It should be noted that, in the embodiments of this application, if it is determined that the first radio frequency signal and the second radio frequency signal are not combined, then the wireless receiver can directly determine a signal to be demodulated from the first radio frequency signal and the second radio frequency signal and input it to the demodulation module for demodulation processing.

[0102] For example, in an embodiment of this application, the wireless receiver can determine the signal to be demodulated based on a first signal-to-noise ratio (SNR) parameter and a second SNR parameter. For instance, the radio frequency signal corresponding to the SNR parameter with the largest value can be determined as the signal to be demodulated.

[0103] In summary, the method for receiving wireless signals proposed in steps 101 to 103 involves first performing differential processing on the first and second radio frequency (RF) signals respectively, and then performing correlation synchronization on the differential RF signals. This effectively overcomes the degradation of synchronization performance caused by a large initial frequency offset. Furthermore, it allows for signal-to-noise ratio (SNR) estimation using the first and second synchronization results after correlation synchronization, and the use of the obtained SNR parameters to merge the differential RF signals for further refined correlation synchronization, thus further improving synchronization performance.

[0104] It is understandable that the method for receiving wireless signals proposed in this application requires minimal hardware modifications to the wireless receiver. It only requires the addition of a one-to-one corresponding antenna and RF link, and modifications to the synchronization and merging processes. The subsequent Bluetooth demodulation module does not require any modifications.

[0105] In other words, the method for receiving wireless signals proposed in this application differs from common multi-antenna combining schemes. The wireless receiver can combine IQ data (radio frequency wireless signals) through related synchronization and combining processes without modifying the subsequent demodulation module, making it simple to implement and with low complexity.

[0106] Furthermore, the method for receiving wireless signals proposed in this application can obtain the first signal-to-noise ratio (SNR) parameter and the second SNR parameter corresponding to the first radio frequency (RF) link and the second RF link, as well as the phase parameter corresponding to the first RF signal and the second RF signal during the synchronization and merging process of the first RF signal and the second RF signal. Then, the SNR parameter and the phase parameter can be used for subsequent algorithm optimization processing.

[0107] For example, in the embodiments of this application, Figure 4 A schematic diagram of antenna gain, as shown below. Figure 4 As shown, when two antennas are configured, the sensitivity of common Bluetooth formats can be improved by 3dB compared to one antenna. In other words, the combination of dual antennas and a single antenna has a maximum gain of 3dB, which can double the transmission range of Bluetooth signals and better meet the requirements of the increasing number of Bluetooth application scenarios for longer-distance transmission.

[0108] This application provides a method for receiving wireless signals. A wireless receiver receives a first radio frequency (RF) signal and a second RF signal via a first antenna and a second antenna, respectively. The first RF signal includes a first synchronization sequence, and the second RF signal includes a second synchronization sequence. The first and second synchronization sequences are correlated and synchronized with a local synchronization sequence to obtain corresponding first and second synchronization results. A first signal-to-noise ratio (SNR) parameter corresponding to the first RF signal and a second SNR parameter corresponding to the second RF signal are determined based on the first and second synchronization results, respectively. The first and second RF signals are then merged based on the first and second SNR parameters. In other words, in this application, the wireless receiver is configured with multiple antennas and multiple RF links in a one-to-one correspondence. After acquiring multiple RF signals through multiple antennas and multiple RF links, the multiple RF signals can be correlated and synchronized separately. Then, the multiple data streams after synchronization processing are merged using the corresponding multiple SNR parameters to obtain a single merged data stream, which is then further demodulated to obtain maximum gain. Therefore, the method for receiving wireless signals proposed in this application improves the receiving sensitivity of the wireless receiver, thereby meeting the requirements of Bluetooth applications for longer-distance transmission.

[0109] Based on the above embodiments, another embodiment of this application provides a method for receiving wireless signals. This method is applied in a wireless receiver, wherein the wireless receiver can be configured with a one-to-one corresponding first antenna and second antenna, a first radio frequency link and a second radio frequency link, as well as a synchronization combining module and a demodulation module. The first radio frequency signal and the second radio frequency signal received by the first antenna and the second antenna, after passing through the radio frequency link, are input to the synchronization combining module for synchronization and combining processing, and finally output as a single signal to the demodulation module for subsequent demodulation processing.

[0110] It is understood that, in the embodiments of this application, based on the synchronization merging module, the wireless receiver can adopt two synchronization schemes, coarse synchronization and fine synchronization, respectively, which can effectively improve the synchronization performance to cope with synchronization-limited scenarios.

[0111] Furthermore, in the embodiments of this application, Figure 5 Implementation flow diagram of the method for receiving wireless signals Figure 2 ,like Figure 5 As shown in the embodiments of this application, the method for a wireless receiver to receive wireless signals may include the following steps:

[0112] Step 201: Receive a first radio frequency signal and a second radio frequency signal through a first antenna and a second antenna, respectively; wherein the first radio frequency signal includes a first synchronization sequence and the second radio frequency signal includes a second synchronization sequence.

[0113] In embodiments of this application, the wireless receiver can receive the corresponding first radio frequency signal and second radio frequency signal through the configured first antenna and second antenna, respectively.

[0114] It should be noted that, in the embodiments of this application, after the wireless receiver receives the first radio frequency signal and the second radio frequency signal, it can use the first radio frequency link and the second radio frequency link to perform preprocessing such as signal amplification, mixing, analog filtering, AD sampling, and low-pass filtering on the corresponding radio frequency signals.

[0115] Furthermore, in the embodiments of this application, after receiving the first radio frequency signal and the second radio frequency signal through the first antenna and the second antenna, and performing corresponding processing through the first radio frequency link and the second radio frequency link, the processed first radio frequency signal and the second radio frequency signal can be transmitted to the merging and synchronization module for further synchronization and merging processing.

[0116] Furthermore, in the embodiments of this application, the first radio frequency signal includes a first synchronization sequence, and the second radio frequency signal includes a second synchronization sequence.

[0117] Step 202: Perform differential processing on the first radio frequency signal and the second radio frequency signal respectively.

[0118] In the embodiments of this application, the wireless receiver may first perform differential processing on the first radio frequency signal and the second radio frequency signal respectively.

[0119] It is understood that, in the embodiments of this application, considering the impact of initial frequency offset on synchronization performance, the wireless receiver may perform differential processing on the radio frequency signal before performing relevant synchronization.

[0120] For example, in an embodiment of this application, the wireless receiver can perform differential processing on the first radio frequency signal received by the first antenna at a first time and the third radio frequency signal received by the first antenna at a second time; at the same time, it can perform differential processing on the second radio frequency signal received by the second antenna at the first time and the fourth radio frequency signal received by the second antenna at the second time.

[0121] Step 203: Synchronize the first synchronization sequence and the second synchronization sequence with the local synchronization sequence respectively to generate the first synchronization result and the second synchronization result.

[0122] In the embodiments of this application, after differential processing, the wireless receiver can further synchronize the first synchronization sequence and the second synchronization sequence with the local synchronization sequence to obtain the synchronized first synchronization result and the second synchronization result.

[0123] Step 204: Determine the first signal-to-noise ratio parameter corresponding to the first radio frequency signal and the second signal-to-noise ratio parameter corresponding to the second radio frequency signal based on the first synchronization result and the second synchronization result, respectively.

[0124] In the embodiments of this application, after completing the correlation synchronization of each radio frequency signal and obtaining the synchronization result corresponding to each radio frequency signal, the wireless receiver can further use the first synchronization result to perform signal-to-noise ratio estimation processing to obtain the corresponding signal-to-noise ratio value, that is, the first signal-to-noise ratio parameter corresponding to the first radio frequency signal; at the same time, it can use the second synchronization result to perform signal-to-noise ratio estimation processing to obtain the corresponding signal-to-noise ratio value, that is, the second signal-to-noise ratio parameter corresponding to the second radio frequency signal.

[0125] Step 205: Determine whether the synchronization condition is met based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter. If it is met, proceed to step 206; otherwise, proceed to step 211.

[0126] In the embodiments of this application, after determining the signal-to-noise ratio (SNR) parameter corresponding to each radio frequency link, the wireless receiver can further determine whether the synchronization condition is met based on the first SNR parameter and the second SNR parameter. If the synchronization condition is met, the receiver can choose to continue using the first SNR parameter and the second SNR parameter to perform merging processing on the first radio frequency signal and the second radio frequency signal, thereby obtaining one merged signal. If the merging condition is not met, the wireless receiver will no longer perform merging processing on the first radio frequency signal and the second radio frequency signal, but will only perform subsequent demodulation processing on one of the signals.

[0127] For example, in an embodiment of this application, when determining whether the merging condition is met, if the absolute value of the difference between the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter is less than or equal to a preset threshold, then the merging condition can be determined to be met; otherwise, the merging condition is determined not to be met. The preset threshold can be any value, and this embodiment does not impose specific limitations.

[0128] For example, in the embodiments of this application, when determining whether the merging condition is met, if both the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter are within a preset signal-to-noise ratio range, then it can be determined that the merging condition is met; otherwise, it is determined that the merging condition is not met. The preset signal-to-noise ratio range can be a numerical range, and this embodiment of the application does not specifically limit it.

[0129] Step 206: Combine the first radio frequency signal and the second radio frequency signal according to the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter.

[0130] In the embodiments of this application, the wireless receiver can first determine the weighting coefficient based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter; then, it can perform weighted calculation on the first radio frequency signal and the second radio frequency signal according to the weighting coefficient, and finally obtain the combined radio frequency signal.

[0131] For example, in an embodiment of this application, when the wireless receiver determines the weighting coefficient based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter, it can use the signal-to-noise ratio parameter corresponding to each radio frequency link to determine the weighting parameter corresponding to the corresponding radio frequency signal in proportion.

[0132] Step 207: Perform relevant synchronization based on the merged radio frequency signal and the local synchronization sequence to generate a third synchronization result.

[0133] In the embodiments of this application, after the wireless receiver determines the merged radio frequency signal based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter and the first radio frequency signal and the second radio frequency signal, it can continue to use the local synchronization sequence and the merged radio frequency signal for correlation synchronization, thereby generating a third synchronization result.

[0134] It should be noted that, in the embodiments of this application, the third synchronization result can be used to determine the sequence length and starting position corresponding to the first radio frequency signal and the second radio frequency signal.

[0135] Step 208: Determine the phase parameters based on the third synchronization result.

[0136] In the embodiments of this application, after obtaining the third synchronization result through fine synchronization, the wireless receiver can use the third synchronization result to perform phase estimation on the first radio frequency signal and / or the second radio frequency signal respectively, thereby determining the initial phase corresponding to the first radio frequency signal and / or the second radio frequency signal, that is, obtaining the phase parameter.

[0137] Step 209: Generate the merged signal based on the phase parameters.

[0138] In the embodiments of this application, after obtaining the phase parameters corresponding to the first radio frequency signal and / or the second radio frequency signal, the wireless receiver can perform phase compensation on the first radio frequency signal and / or the second radio frequency signal according to the phase parameters to obtain phase-compensated data; then, the phase-compensated data and the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter can be combined to finally obtain the combined signal.

[0139] It should be noted that, in the embodiments of this application, when the wireless receiver performs merging processing on the phase-compensated data using the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter, it can first determine the weighting coefficient based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter; then it can perform weighted calculation on the phase-compensated data according to the weighting coefficient, and finally obtain the merged signal.

[0140] For example, in embodiments of this application, if only the first radio frequency signal undergoes phase compensation, the phase-compensated data may include the second radio frequency signal and the phase-compensated first radio frequency signal. If only the second radio frequency signal undergoes phase compensation, the phase-compensated data may include the first radio frequency signal and the phase-compensated second radio frequency signal. If both the first and second radio frequency signals undergo phase compensation, the phase-compensated data may include the phase-compensated first radio frequency signal and the phase-compensated second radio frequency signal.

[0141] Step 210: Demodulate the merged signal.

[0142] In the embodiments of this application, after the first radio frequency signal and the second radio frequency signal are combined according to the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter to obtain a combined signal, the wireless receiver can perform subsequent demodulation processing on the combined signal through the demodulation module.

[0143] Step 211: Determine the signal to be demodulated and perform demodulation processing on the demodulated signal.

[0144] In the embodiments of this application, if it is determined that the merging condition is not met, the wireless receiver can select the signal to be demodulated from the first radio frequency signal and the second radio frequency signal according to the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter; then the demodulated signal can be further demodulated.

[0145] For example, in an embodiment of this application, the wireless receiver can determine the signal to be demodulated based on a first signal-to-noise ratio (SNR) parameter and a second SNR parameter. For instance, the radio frequency signal corresponding to the SNR parameter with the largest value can be determined as the signal to be demodulated.

[0146] Furthermore, in the embodiments of this application, Figure 6 Implementation flow diagram of the method for receiving wireless signals Figure 3 ,like Figure 6 As shown in the embodiments of this application, the method for a wireless receiver to receive wireless signals may include the following steps:

[0147] Step 212: Receive multiple radio frequency signals through multiple antennas.

[0148] In the embodiments of this application, the wireless receiver can receive multiple corresponding radio frequency signals through multiple configured antennas.

[0149] It should be noted that, in the embodiments of this application, after receiving multiple radio frequency signals, the wireless receiver can use multiple radio frequency links to perform preprocessing such as signal amplification, mixing, analog filtering, AD sampling, and low-pass filtering on the corresponding radio frequency signals.

[0150] Furthermore, in the embodiments of this application, after receiving multiple radio frequency signals through multiple antennas and processing them accordingly through multiple radio frequency links, the processed multiple radio frequency signals can be transmitted to the merging and synchronization module for further synchronization and merging processing.

[0151] Furthermore, in the embodiments of this application, each radio frequency signal includes a corresponding synchronization sequence.

[0152] Step 213: Perform differential processing on multiple radio frequency signals respectively.

[0153] In the embodiments of this application, the wireless receiver may first perform differential processing on multiple radio frequency signals respectively.

[0154] It is understood that, in the embodiments of this application, considering the impact of initial frequency offset on synchronization performance, the wireless receiver may perform differential processing on the radio frequency signal before performing relevant synchronization.

[0155] Step 214: Perform correlation synchronization based on multiple radio frequency signals and local synchronization sequences to generate multiple synchronization results.

[0156] In the embodiments of this application, after differential processing, the wireless receiver can further synchronize the differential radio frequency signal through a local synchronization sequence to obtain the synchronized result.

[0157] It is understood that, in the embodiments of this application, when performing correlation synchronization, the wireless receiver can perform correlation synchronization on multiple differential RF signals by means of the correlation between the local synchronization sequence and the multiple differential RF signals, and obtain multiple synchronized data, that is, multiple synchronization results corresponding to the multiple differential RF signals.

[0158] Step 215: Determine multiple signal-to-noise ratio parameters corresponding to multiple RF links based on multiple synchronization results.

[0159] In the embodiments of this application, after completing the correlation synchronization of each radio frequency signal and obtaining the synchronization result corresponding to each radio frequency signal, the wireless receiver can further use the synchronization result to perform signal-to-noise ratio estimation processing to obtain the corresponding signal-to-noise ratio value, that is, the signal-to-noise ratio parameter corresponding to each radio frequency link.

[0160] Step 216: Determine whether the synchronization condition is met based on multiple signal-to-noise ratio parameters. If it is met, proceed to step 217; otherwise, proceed to step 222.

[0161] In the embodiments of this application, after determining the signal-to-noise ratio (SNR) parameter corresponding to each radio frequency link, the wireless receiver can further determine whether the synchronization condition is met based on multiple SNR parameters. If the synchronization condition is met, the receiver can choose to continue using multiple SNR parameters to merge multiple radio frequency signals, thereby obtaining one merged signal. If the merging condition is not met, the wireless receiver will no longer perform the merging process of multiple radio frequency signals, but will only perform subsequent demodulation processing on one of the signals.

[0162] For example, in an embodiment of this application, when determining whether the merging condition is met, if the difference between any two signal parameters among the multiple signal-to-noise ratio parameters is less than or equal to a preset threshold, then the merging condition can be determined to be met; otherwise, the merging condition is determined not to be met. The preset threshold can be any value, and this embodiment of the application does not impose specific limitations on it.

[0163] For example, in the embodiments of this application, when determining whether the merging conditions are met, if multiple signal-to-noise ratio (SNR) parameters all fall within a preset SNR range, then the merging conditions can be determined to be met; otherwise, the merging conditions are determined not to be met. The preset SNR range can be a numerical range, and this embodiment of the application does not impose a specific limitation.

[0164] Step 217: Combine multiple differential RF signals based on multiple signal-to-noise ratio parameters.

[0165] In the embodiments of this application, the wireless receiver can first determine multiple weighting coefficients based on multiple signal-to-noise ratio parameters; then, it can perform weighted calculations on multiple differential radio frequency signals according to the weighting coefficients, and finally obtain the combined radio frequency signal.

[0166] For example, in an embodiment of this application, when the wireless receiver determines multiple weighting coefficients based on multiple signal-to-noise ratio parameters, it can use the signal-to-noise ratio parameter corresponding to each radio frequency link to determine the weighting parameter corresponding to the corresponding radio frequency signal in proportion.

[0167] For example, in an embodiment of this application, assuming the wireless receiver is configured with three antennas and receives three radio frequency signals, namely signal 1, signal 2, and signal 3, the signal-to-noise ratio (SNR) parameters corresponding to signal 1, signal 2, and signal 3 can be expressed as SNR1, SNR2, and SNR3. Then, when combining signal 1, signal 2, and signal 3, the corresponding weighting parameter w can be calculated using the following formula. i Determination:

[0168]

[0169] Where i can be 1, 2, or 3.

[0170] Step 218: Perform relevant synchronization based on the merged radio frequency signal and the local synchronization sequence to generate a third synchronization result.

[0171] In the embodiments of this application, after the wireless receiver determines the merged radio frequency signal based on multiple signal-to-noise ratio parameters and multiple differential radio frequency signals, it can continue to use the local synchronization sequence and the merged radio frequency signal for correlation synchronization, thereby generating a third synchronization result.

[0172] It should be noted that, in the embodiments of this application, the third synchronization result can be used to determine the sequence length and starting position corresponding to multiple radio frequency signals.

[0173] Step 219: Determine the phase parameters based on the third synchronization result.

[0174] In the embodiments of this application, after obtaining the third synchronization result through fine synchronization, the wireless receiver can use the third synchronization result to perform phase estimation on multiple radio frequency signals respectively, thereby determining the initial phase corresponding to each radio frequency signal, i.e., obtaining the phase parameter.

[0175] Step 220: Generate the merged signal based on the phase parameters.

[0176] In the embodiments of this application, after obtaining the phase parameter corresponding to each radio frequency signal, the wireless receiver can perform phase compensation on multiple radio frequency signals according to the phase parameter to obtain phase-compensated data; then, it can perform merging processing on the phase-compensated data and multiple signal-to-noise ratio parameters to finally obtain the merged signal.

[0177] It should be noted that, in the embodiments of this application, when the wireless receiver performs merging processing on the phase-compensated data using multiple signal-to-noise ratio parameters, it can first determine multiple weighting coefficients based on the multiple signal-to-noise ratio parameters; then, it can perform weighted calculations on the phase-compensated data according to the weighting coefficients, and finally obtain the merged signal.

[0178] For example, in an embodiment of this application, it is assumed that the wireless receiver is configured with three antennas and receives three radio frequency signals, namely signal 1, signal 2, and signal 3. The signal-to-noise ratio (SNR) ratio of the signals 1, 2, and 3 is SNR1:SNR2:SNR3 = 4:1:4. Then, when combining signals 1, 2, and 3, the weight parameters corresponding to signals 1, 2, and 3 can be determined based on the above formula (1).

[0179] For example, in an embodiment of this application, if only signal 1 is phase-compensated, the phase-compensated data may include signal 2, signal 3, and the phase-compensated signal 1. If phase compensation is performed on signal 1, signal 2, and signal 3, the phase-compensated data may include the phase-compensated signals 1, 2, and 3.

[0180] Step 221: Demodulate the merged signal.

[0181] Furthermore, in the embodiments of this application, after the first radio frequency signal and the second radio frequency signal are combined according to the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter to obtain a combined signal, the wireless receiver can perform subsequent demodulation processing on the combined signal through the demodulation module.

[0182] Step 222: Determine the signal to be demodulated and perform demodulation processing on the demodulated signal.

[0183] In the embodiments of this application, if it is determined that the merging condition is not met, the wireless receiver can select the signal to be demodulated from multiple radio frequency signals according to multiple signal-to-noise ratio parameters; then the demodulated signal can be further demodulated.

[0184] For example, in embodiments of this application, the wireless receiver can determine the signal to be demodulated based on multiple signal-to-noise ratio (SNR) parameters. For instance, the radio frequency (RF) signal corresponding to the parameter with the largest SNR value can be determined as the signal to be demodulated.

[0185] Furthermore, in the embodiments of this application, after determining multiple signal-to-noise ratio parameters corresponding to multiple radio frequency links based on multiple synchronization results, i.e., after step 215, and before demodulating the merged signal, i.e., before step 221, the method for a wireless receiver to receive a wireless signal may include the following steps:

[0186] Step 223: Filter multiple radio frequency signals based on multiple signal-to-noise ratio parameters to obtain the filtered radio frequency signals.

[0187] In the embodiments of this application, after determining multiple signal-to-noise ratio parameters, the wireless receiver can also use these multiple signal-to-noise ratio parameters to filter multiple radio frequency signals and determine the filtered radio frequency signals.

[0188] It is understood that, in the embodiments of this application, when filtering multiple radio frequency signals, the wireless receiver may also use the above-mentioned preset threshold or the above-mentioned preset signal-to-noise ratio range to filter out the radio frequency signals corresponding to the signal-to-noise ratio parameters that do not meet the above-mentioned preset threshold or the above-mentioned preset signal-to-noise ratio range, and the remaining radio frequency signals are the filtered radio frequency signals.

[0189] Step 224: Merge the filtered radio frequency signals to obtain the merged signal.

[0190] In the embodiments of this application, after the screening of multiple radio frequency signals is completed, the screened radio frequency signals can be merged to obtain a merged signal, and then the merged signal can be demodulated.

[0191] It is understood that, in the embodiments of this application, the specific merging process proposed in steps 217 to 220 above can be used to achieve the merging processing of the filtered radio frequency signals.

[0192] This application provides a method for receiving wireless signals. A wireless receiver receives a first radio frequency (RF) signal and a second RF signal via a first antenna and a second antenna, respectively. The first RF signal includes a first synchronization sequence, and the second RF signal includes a second synchronization sequence. The first and second synchronization sequences are correlated and synchronized with a local synchronization sequence to obtain corresponding first and second synchronization results. A first signal-to-noise ratio (SNR) parameter corresponding to the first RF signal and a second SNR parameter corresponding to the second RF signal are determined based on the first and second synchronization results, respectively. The first and second RF signals are then merged based on the first and second SNR parameters. In other words, in this application, the wireless receiver is configured with multiple antennas and multiple RF links in a one-to-one correspondence. After acquiring multiple RF signals through multiple antennas and multiple RF links, the multiple RF signals can be correlated and synchronized separately. Then, the multiple data streams after synchronization processing are merged using the corresponding multiple SNR parameters to obtain a single merged data stream, which is then further demodulated to obtain maximum gain. Therefore, the method for receiving wireless signals proposed in this application improves the receiving sensitivity of the wireless receiver, thereby meeting the requirements of Bluetooth applications for longer-distance transmission.

[0193] Based on the above embodiments, another embodiment of this application proposes a method for receiving wireless signals, which can be applied to a wireless receiver configured with multiple antennas and multiple radio frequency links in a one-to-one correspondence. It mainly includes a multi-antenna Bluetooth receiving process, which can significantly improve Bluetooth sensitivity and extend the transmission distance. The following embodiments use a two-antenna example to describe in detail the method for receiving wireless signals proposed in this application.

[0194] It should be noted that, in the embodiments of this application, Figure 7 This is a schematic diagram of the structure of a common wireless receiver, such as... Figure 7 As shown, a typical wireless receiver mainly consists of an antenna and an RF link. The RF link can include two parts: RF and low-pass filtering. The synchronization module is mainly used to perform signal synchronization processing. Figure 8 This is a schematic diagram illustrating the configuration of the wireless receiver proposed in an embodiment of this application, as shown below. Figure 8 As shown in the embodiments of this application, the wireless receiver can be composed of two antennas and two radio frequency links, wherein each radio frequency link can include two parts: radio frequency and low-pass filtering. The synchronization and merging module is mainly used to perform signal synchronization processing and merging processing.

[0195] As can be seen, in contrast, the embodiments of this application add the function of merging multiple antenna data into one signal to the original synchronization module. This can obtain the gain of multiple antennas while keeping the subsequent demodulation process unchanged.

[0196] For example, in the embodiments of this application, Figure 9 This is a schematic diagram illustrating the implementation process of wireless signal reception, as shown below. Figure 9 As shown, the method for a wireless receiver to receive wireless signals may include the following steps:

[0197] Step 301: The wireless receiver receives data frames and enters the synchronization process.

[0198] In the embodiments of this application, the wireless receiver can receive two data frames (radio frequency signals) through two antennas respectively.

[0199] Step 302: Perform differential operations on the data of each antenna separately.

[0200] In the embodiments of this application, for the radio frequency signal received through each antenna, the wireless receiver can perform differential operation by performing conjugate multiplication at 1µs intervals, thereby reducing the impact of the initial frequency offset on the correlation synchronization performance.

[0201] Step 303: Perform relevant synchronization between the data after the differential operation and the local synchronization sequence.

[0202] In the embodiments of this application, the local synchronization sequence is also differentially processed. The wireless receiver can use the correlation between the local synchronization sequence and multiple differentially processed data (i.e., differentially processed radio frequency signals) to perform the first correlation synchronization, obtaining multiple synchronization results.

[0203] Step 304: Estimate SNR using the synchronization results.

[0204] In the embodiments of this application, the wireless receiver performs signal-to-noise ratio estimation on multiple synchronization results to obtain the corresponding signal-to-noise ratio parameters.

[0205] The SNR (signal-to-noise ratio) obtained from the two antennas in this way can be used as the coefficient for combining the two antennas in the subsequent data. This method of combining conforms to the principle of maximum ratio combining. When the SNRs of the two antennas are equal, a maximum gain of 3dB can be obtained.

[0206] Step 305: Determine whether to perform merging processing based on the antenna's SNR.

[0207] In the embodiments of this application, the wireless receiver compares the estimated SNR values ​​(signal-to-noise ratio parameters) of the two antennas to determine whether to perform merging processing. For example, it calculates the difference between the two signal-to-noise ratio parameters. If the difference is greater than a threshold (preset threshold), no merging processing is performed, and the process proceeds to step 306; if the difference is less than the threshold, merging processing is performed, and the process proceeds to step 307.

[0208] Step 306: Select the data with the larger SNR.

[0209] In the embodiments of this application, if it is determined that no merging process will be performed, it means that merging cannot bring any gain under this situation. In this case, the wireless receiver will not merge the data from the two antennas, but will use the data with the larger SNR estimate as the signal to be demodulated and proceed to step 310.

[0210] Step 307: Merge the differential RF signals and perform relevant synchronization.

[0211] In the embodiments of this application, if it is determined that merging processing is required, the wireless receiver can first merge the differential radio frequency signals of the two antennas according to the SNR of the two antennas in proportion, and then use the local synchronization sequence to perform a second correlation synchronization, i.e. fine synchronization, to obtain a third synchronization result, thereby further improving the synchronization performance.

[0212] Step 308: Perform phase estimation.

[0213] In the embodiments of this application, the wireless receiver can perform initial phase estimation of each antenna data based on the fine synchronization result (third synchronization result) to determine multiple initial phases (phase parameters).

[0214] Step 309: After phase compensation, perform merging processing.

[0215] In the embodiments of this application, the data of each antenna is initially compensated for in phase, and then the data is combined proportionally according to the SNR of the two antennas to obtain the combined signal.

[0216] Step 310: Perform demodulation processing.

[0217] In the embodiments of this application, the merged signal or the signal to be demodulated can be output to the demodulation module for demodulation processing.

[0218] It should be noted that when two antennas are configured, the sensitivity of common Bluetooth formats can be improved by 3dB compared to one antenna. In other words, the combination of dual antennas and a single antenna has a maximum gain of 3dB, which can double the transmission range of Bluetooth signals and better meet the requirements of the increasing number of Bluetooth application scenarios for longer-distance transmission.

[0219] It should be noted that in the synchronization merging module, the differential of the received data is used first for the relevant synchronization operation. The advantages of this are: 1) it can significantly reduce the degradation of synchronization performance caused by a large initial frequency offset; 2) it is convenient to estimate the SNR and then directly merge the two differential data (without compensating for the initial phase of the two channels) and then synchronize again to improve the synchronization performance.

[0220] It is understood that the solution proposed in this application requires minimal hardware modifications to the wireless receiver. It only requires the addition of a corresponding antenna and RF link, and modification of the synchronization module processing procedure. The subsequent Bluetooth demodulation module does not require any modifications.

[0221] Furthermore, in the embodiments of this application, the synchronization merging module can provide important parameters such as link SNR and initial phase, which can provide support for other optimization algorithms.

[0222] Therefore, the method for receiving wireless signals proposed in this application differs from previous multi-antenna combining schemes. It can directly estimate the received SNR and initial phase of each antenna link in the synchronization combining module to combine the IQ data, without modifying the subsequent demodulation module. This method is simple to implement and has low complexity. Specifically, in the synchronization combining module, the double synchronization scheme first improves synchronization performance to cope with synchronization-limited scenarios. Then, after initial phase estimation, phase compensation is performed before combining the two IQ data streams, achieving a maximum 3dB gain in the final data demodulation.

[0223] This application provides a method for receiving wireless signals. A wireless receiver receives a first radio frequency (RF) signal and a second RF signal via a first antenna and a second antenna, respectively. The first RF signal includes a first synchronization sequence, and the second RF signal includes a second synchronization sequence. The first and second synchronization sequences are correlated and synchronized with a local synchronization sequence to obtain corresponding first and second synchronization results. A first signal-to-noise ratio (SNR) parameter corresponding to the first RF signal and a second SNR parameter corresponding to the second RF signal are determined based on the first and second synchronization results, respectively. The first and second RF signals are then merged based on the first and second SNR parameters. In other words, in this application, the wireless receiver is configured with multiple antennas and multiple RF links in a one-to-one correspondence. After acquiring multiple RF signals through multiple antennas and multiple RF links, the multiple RF signals can be correlated and synchronized separately. Then, the multiple data streams after synchronization processing are merged using the corresponding multiple SNR parameters to obtain a single merged data stream, which is then further demodulated to obtain maximum gain. Therefore, the method for receiving wireless signals proposed in this application improves the receiving sensitivity of the wireless receiver, thereby meeting the requirements of Bluetooth applications for longer-distance transmission.

[0224] Based on the above embodiments, in another embodiment of this application... Figure 10 This is a schematic diagram of the structure of a wireless receiver, such as... Figure 10 As shown, the wireless receiver 10 proposed in this embodiment may include: a first antenna 11, a second antenna 12, a first radio frequency link 13, a second radio frequency link 14, and a synchronization combining module 15; wherein,

[0225] The first antenna 11 is used to receive a first radio frequency signal; wherein the first radio frequency signal includes a first synchronization sequence;

[0226] The second antenna 12 is used to receive a second radio frequency signal; wherein the second radio frequency signal includes a second synchronization sequence;

[0227] The first radio frequency link 13 and the second radio frequency link 14 are used to preprocess the first radio frequency signal and the second radio frequency signal respectively, and input the processed first radio frequency signal and the second radio frequency signal to the synchronization merging module;

[0228] The synchronization merging module 15 is used to perform correlation synchronization between the first synchronization sequence and the second synchronization sequence and the local synchronization sequence to obtain corresponding first synchronization result and second synchronization result; determine the first signal-to-noise ratio parameter corresponding to the first radio frequency signal and the second signal-to-noise ratio parameter corresponding to the second radio frequency signal based on the first synchronization result and the second synchronization result; and perform merging processing on the first radio frequency signal and the second radio frequency signal based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter.

[0229] In the embodiments of this application, further, Figure 11 This is a schematic diagram of the chip's structure, such as... Figure 11 As shown, the chip 20 proposed in this application embodiment may include a processor 21.

[0230] In the embodiments of this application, the processor 21 can be at least one of the following: Application-Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), Controller, Microcontroller, and Microprocessor. It is understood that for different devices, the electronic device used to implement the above-mentioned processor function can also be other types, and the embodiments of this application do not specifically limit it.

[0231] Further, in an embodiment of this application, the processor 21 is configured to receive a first radio frequency (RF) signal and a second RF signal via a first antenna and a second antenna, respectively; wherein the first RF signal includes a first synchronization sequence, and the second RF signal includes a second synchronization sequence; the first synchronization sequence and the second synchronization sequence are respectively correlated and synchronized with a local synchronization sequence to obtain corresponding first synchronization results and second synchronization results; a first signal-to-noise ratio (SNR) parameter corresponding to the first RF signal and a second SNR parameter corresponding to the second RF signal are determined based on the first synchronization result and the second synchronization result, respectively; and the first RF signal and the second RF signal are merged based on the first SNR parameter and the second SNR parameter.

[0232] Furthermore, in this embodiment, the functional modules can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional module.

[0233] If the integrated unit is implemented as a software functional module and is not sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this embodiment, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the method of this embodiment. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0234] This application provides a wireless receiver that receives a first radio frequency (RF) signal and a second RF signal via a first antenna and a second antenna, respectively. The first RF signal includes a first synchronization sequence, and the second RF signal includes a second synchronization sequence. The first and second synchronization sequences are correlated and synchronized with a local synchronization sequence to obtain corresponding first and second synchronization results. A first signal-to-noise ratio (SNR) parameter corresponding to the first RF signal and a second SNR parameter corresponding to the second RF signal are determined based on the first and second synchronization results, respectively. The first and second RF signals are then combined based on the first and second SNR parameters. In other words, in this application, the wireless receiver is configured with multiple antennas and multiple RF links in a one-to-one correspondence. After acquiring multiple RF signals through multiple antennas and multiple RF links, the multiple RF signals can be correlated and synchronized separately. Then, the multiple data streams after synchronization and processing are combined with the corresponding multiple SNR parameters to obtain a single merged data stream, which is then further demodulated to obtain maximum gain. Therefore, the method for receiving wireless signals proposed in this application improves the receiving sensitivity of the wireless receiver, thereby meeting the requirements of Bluetooth applications for longer-distance transmission.

[0235] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0236] This application is described with reference to schematic and / or block diagrams of implementations of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block of the schematic and / or block diagrams can be implemented by computer program instructions, and combinations of blocks in the schematic and / or block diagrams can be implemented. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the schematic and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0237] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in the implementation flow diagram. Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0238] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0239] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of protection of this application.

Claims

1. A method for receiving wireless signals, characterized in that, The method includes: A first radio frequency signal and a second radio frequency signal are received by a first antenna and a second antenna, respectively; wherein, the first radio frequency signal includes a first synchronization sequence, and the second radio frequency signal includes a second synchronization sequence; The first synchronization sequence and the second synchronization sequence are respectively synchronized with the local synchronization sequence to obtain the corresponding first synchronization result and second synchronization result; Based on the first synchronization result and the second synchronization result, the first signal-to-noise ratio parameter corresponding to the first radio frequency signal and the second signal-to-noise ratio parameter corresponding to the second radio frequency signal are determined respectively. The first radio frequency signal and the second radio frequency signal are combined based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter. The synchronization sequence included in the merged radio frequency signal is correlated and synchronized with the local synchronization sequence to obtain a third synchronization result; wherein, the third synchronization result is used to determine the sequence length and start position corresponding to the first radio frequency signal and the second radio frequency signal; Based on the third synchronization result, the phase parameters are determined, and the first radio frequency signal and / or the second radio frequency signal are phase compensated based on the phase parameters to obtain the phase-compensated data; The data after phase compensation, the first signal-to-noise ratio parameter, and the second signal-to-noise ratio parameter are combined to obtain a combined signal, and the combined signal is then demodulated.

2. The method according to claim 1, characterized in that, The method further includes: Differential processing is performed on the first radio frequency signal received by the first antenna at the first time and the third radio frequency signal received by the first antenna at the second time; Differential processing is performed on the second radio frequency signal received by the second antenna at the first time and the fourth radio frequency signal received by the second antenna at the second time.

3. The method according to claim 2, characterized in that, The method further includes: Based on the comparison between the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter, the first radio frequency signal and the second radio frequency signal are merged.

4. The method according to claim 2 or 3, characterized in that, The method further includes: The synchronization sequence included in the merged radio frequency signal is correlated and synchronized with the local synchronization sequence to obtain the corresponding third synchronization result; Phase estimation is performed on the first radio frequency signal and / or the second radio frequency signal based on the third synchronization result.

5. The method according to claim 4, characterized in that, The method further includes: Phase compensation is performed on the first RF signal and / or the second RF signal based on the phase parameters obtained after phase estimation.

6. The method according to claim 5, characterized in that, The method further includes: The data is merged based on the phase-compensated data, the first signal-to-noise ratio parameter, and the second signal-to-noise ratio parameter.

7. The method according to claim 3, characterized in that, The method further includes: If the absolute value of the difference between the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter is less than or equal to a preset threshold, then a merging process is performed; or, If both the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter fall within a preset signal-to-noise ratio range, then a merging process is performed.

8. The method according to claim 3, characterized in that, The method further includes: Determine the ratio between the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter; The first radio frequency signal and the second radio frequency signal are merged according to the ratio.

9. The method according to claim 6, characterized in that, The method further includes: Determine the ratio between the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter; The phase-compensated data are merged according to the stated ratio.

10. The method according to claim 2 or 3, characterized in that, The method further includes: The first radio frequency signal and the second radio frequency signal are filtered based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter.

11. The method according to any one of claims 1-9, characterized in that, The method further includes: The first radio frequency signal and the second radio frequency signal are preprocessed through the first radio frequency link and the second radio frequency link respectively; wherein, the preprocessing includes: signal amplification, mixing, analog filtering, AD sampling and low-pass filtering.

12. A chip for receiving wireless signals, characterized in that, The chip for receiving wireless signals includes a processor configured to perform: A first radio frequency signal and a second radio frequency signal are received by a first antenna and a second antenna, respectively; wherein, the first radio frequency signal includes a first synchronization sequence, and the second radio frequency signal includes a second synchronization sequence; The first synchronization sequence and the second synchronization sequence are respectively synchronized with the local synchronization sequence to obtain the corresponding first synchronization result and second synchronization result; Based on the first synchronization result and the second synchronization result, the first signal-to-noise ratio parameter corresponding to the first radio frequency signal and the second signal-to-noise ratio parameter corresponding to the second radio frequency signal are determined respectively. The first radio frequency signal and the second radio frequency signal are combined based on the first signal-to-noise ratio parameter and the second signal-to-noise ratio parameter. The synchronization sequence included in the merged radio frequency signal is correlated and synchronized with the local synchronization sequence to obtain a third synchronization result; wherein, the third synchronization result is used to determine the sequence length and start position corresponding to the first radio frequency signal and the second radio frequency signal; Based on the third synchronization result, the phase parameters are determined, and the first radio frequency signal and / or the second radio frequency signal are phase compensated based on the phase parameters to obtain the phase-compensated data; The combined signal is obtained by combining the phase-compensated data, the first signal-to-noise ratio parameter, and the second signal-to-noise ratio parameter, and then demodulated.

13. A wireless receiver, characterized in that, The wireless receiver includes: a first antenna, a second antenna, a first radio frequency link, a second radio frequency link, and a synchronization combining module; wherein... The first antenna is used to receive a first radio frequency signal; wherein the first radio frequency signal includes a first synchronization sequence; The second antenna is used to receive a second radio frequency signal; wherein the second radio frequency signal includes a second synchronization sequence; The first radio frequency link and the second radio frequency link are used to preprocess the first radio frequency signal and the second radio frequency signal respectively, and input the processed first radio frequency signal and the second radio frequency signal to the synchronization merging module; The synchronization merging module is used to correlate and synchronize the first synchronization sequence and the second synchronization sequence with a local synchronization sequence to obtain corresponding first synchronization results and second synchronization results; determine a first signal-to-noise ratio (SNR) parameter corresponding to the first radio frequency (RF) signal and a second SNR parameter corresponding to the second RF signal based on the first synchronization result and the second synchronization result; perform merging processing on the first RF signal and the second RF signal based on the first SNR parameter and the second SNR parameter; correlate and synchronize the synchronization sequence included in the merged RF signal with the local synchronization sequence to obtain a third synchronization result; wherein, the third synchronization result is used to determine the sequence length and start position corresponding to the first RF signal and the second RF signal; determine a phase parameter based on the third synchronization result, and perform phase compensation on the first RF signal and / or the second RF signal based on the phase parameter to obtain phase-compensated data; perform merging processing on the phase-compensated data, the first SNR parameter, and the second SNR parameter to obtain a merged signal, and perform demodulation processing on the merged signal.

Images