Wireless signal transmission method and transmitter

Abstract

The application discloses a wireless signal transmitting method and a transmitter, wherein the wireless signal transmitter comprises a modulation and amplification module, a radio frequency signal collecting module and a signal amplitude compensation module; the modulation and amplification module receives an amplitude compensation signal output by the signal amplitude compensation module, modulates and amplifies the amplitude compensation signal and outputs a radio frequency amplification signal; the radio frequency signal collecting module collects the radio frequency amplification signal in a radio frequency signal collecting time interval and outputs a radio frequency collecting signal; the signal amplitude compensation module calculates a signal amplitude compensation amount based on the radio frequency collecting signal, compensates an input baseband signal in an amplitude compensation moment associated with the radio frequency signal collecting time interval based on the signal amplitude compensation amount and outputs an amplitude compensation signal, so that the amplitude of the compensated radio frequency amplification signal is equal to the amplitude of the radio frequency amplification signal in a preset reference period. The wireless transmitter can effectively reduce the amplitude drift of the transmitting signal and improve the transmitting signal quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of radio technology, in particular, to a wireless signal transmitting method and a transmitter. BACKGROUND

[0002] The wireless signal transmitter is used to convert the baseband signal into the radio frequency signal, and the radio frequency signal is amplified and transmitted through the antenna. Figure 1 The principle schematic diagram of the general wireless signal transmitter is shown, and the wireless signal transmitter usually includes a modulation and amplification module and an antenna, and the modulation and amplification module includes a modulator and a radio frequency amplifier. The baseband signal is modulated by the modulator to obtain a modulated signal, the modulated signal is amplified by the radio frequency amplifier to obtain a radio frequency amplified signal, and the radio frequency amplified signal is transmitted through the antenna unit.

[0003] The modulation and amplification module is generally composed of analog devices, and the analog devices will produce non-ideal characteristics due to factors such as heat, DC offset, and capacitor charging and discharging, which includes the change of the gain of the amplifier, thereby causing the amplitude drift of the transmitted signal, and deteriorating the quality of the transmitted signal. The error vector magnitude (EVM) can be used as an index to reflect the quality of the transmitted signal. It is recorded in the document IEEE 802.11-17 / 1374r0 that the signal amplitude drift of 0.05dB will cause the error vector magnitude (EVM) of the signal to deteriorate by 3dB. Wireless communication protocols such as WLAN have certain requirements for EVM test indicators. If the EVM performance is improved by improving the amplitude drift indicators of analog and radio frequency devices, the design of analog and radio frequency devices will be complicated and the cost will be too high.

[0004] In order to overcome the above problem of high cost, in the prior art, the amplitude drift is compensated to improve the EVM performance, so as to reduce the design requirements of the radio frequency and analog devices. For example, the document CN210297645U discloses a power amplifier amplitude compensation circuit and device, which acquires the working temperature of the power amplifier through a temperature sensor to obtain an analog voltage signal, and converts the analog voltage signal into a voltage control signal to control the gain of the power amplifier according to the voltage control signal. However, this method only considers the influence of temperature change and cannot compensate for the signal amplitude drift caused by other factors. SUMMARY

[0005] One object of the present application is to provide a wireless signal transmitting method and a transmitter to effectively reduce the amplitude drift of the transmitted signal and improve the quality of the transmitted signal.

[0006] In one aspect of the present application, a wireless signal transmitter is provided, which comprises a modulation and amplification module, a radio frequency signal acquisition module, and a signal amplitude compensation module. The modulation and amplification module is configured to receive an amplitude-compensated signal output by the signal amplitude compensation module, modulate and amplify the amplitude-compensated signal, and output a radio frequency amplified signal. The radio frequency signal acquisition module is configured to acquire the radio frequency amplified signal in a radio frequency signal acquisition time interval and output a radio frequency acquisition signal. The signal amplitude compensation module is configured to calculate a signal amplitude compensation amount based on the radio frequency acquisition signal, perform amplitude compensation on an input baseband signal at an amplitude compensation time point associated with the radio frequency signal acquisition time interval based on the signal amplitude compensation amount, and output the amplitude-compensated signal, so that the amplitude of the radio frequency amplified signal after compensation is equal to the amplitude of the radio frequency amplified signal in a preset reference time period.

[0007] In some embodiments, the modulation and amplification module comprises a modulator configured to modulate the amplitude-compensated signal output by the signal amplitude compensation module and output a modulated signal, and a radio frequency amplifier configured to amplify the modulated signal to obtain the radio frequency amplified signal.

[0008] In some embodiments, the signal amplitude compensation module comprises a signal amplitude compensation amount calculation submodule configured to calculate the signal amplitude compensation amount based on the radio frequency acquisition signal, and a signal amplitude compensation execution submodule configured to perform amplitude compensation on the baseband signal based on the signal amplitude compensation amount and output the amplitude-compensated signal.

[0009] In some embodiments, the radio frequency signal acquisition module comprises a signal attenuator configured to attenuate the radio frequency amplified signal to obtain a radio frequency attenuated signal, a demodulator configured to demodulate the radio frequency attenuated signal to obtain a demodulated signal, and an analog-to-digital converter configured to sample the demodulated signal to obtain the radio frequency acquisition signal.

[0010] In some embodiments, the radio frequency signal acquisition module is further configured to receive an acquisition control signal, which controls the radio frequency signal acquisition module to acquire the radio frequency amplified signal in the radio frequency signal acquisition time interval.

[0011] In some embodiments, the amplitude compensation time point associated with the nth radio frequency signal acquisition time interval is earlier than the start time point of the (n+1)th radio frequency signal acquisition time interval, where n is a positive integer.

[0012] In some embodiments, the amplitude compensation time point associated with the nth radio frequency signal acquisition time interval is the start time point of the (n+1)th radio frequency signal acquisition time interval, where n is a positive integer.

[0013] In some embodiments, the two adjacent radio frequency signal collection time interval sections partially overlap.

[0014] In a second aspect of the present application, a wireless signal transmitter is provided, which comprises a modulation and amplification module and a signal amplitude compensation module, wherein the modulation and amplification module is configured to receive an amplitude compensation signal output by the signal amplitude compensation module, and modulate and amplify the amplitude compensation signal to output a radio frequency amplified signal; the signal amplitude compensation module is configured to calculate a signal amplitude compensation amount, and perform amplitude compensation on an input baseband signal at an amplitude compensation time based on the signal amplitude compensation amount, and output the amplitude compensation signal, so that the amplitude of the radio frequency amplified signal after compensation is equal to the amplitude of the radio frequency amplified signal in a preset reference period.

[0015] In some embodiments, the modulation and amplification module comprises a modulator configured to modulate the amplitude compensation signal output by the signal amplitude compensation module to output a modulated signal, and a radio frequency amplifier configured to amplify the modulated signal to obtain the radio frequency amplified signal.

[0016] In some embodiments, the signal amplitude compensation module comprises a signal amplitude compensation amount calculation submodule configured to determine the signal amplitude compensation amount in any of the following ways: (1) calculating the signal amplitude compensation amount based on a preset amplitude drift amount model; (2) reading the signal amplitude compensation amount from pre-stored amplitude compensation data based on a preset amplitude drift amount model, and a signal amplitude compensation execution submodule configured to perform amplitude compensation on the baseband signal based on the signal amplitude compensation amount, and output the amplitude compensation signal.

[0017] In a third aspect of the present application, a wireless signal transmitter is provided, which comprises a modulator, a radio frequency amplifier, a radio frequency signal collection module, and a radio frequency signal amplitude compensation module, wherein the modulator is configured to modulate an input baseband signal to output a modulated signal; the radio frequency amplifier is configured to receive an amplitude compensation signal output by the radio frequency signal amplitude compensation module, and amplify the amplitude compensation signal to obtain a radio frequency amplified signal; the radio frequency signal collection module is configured to collect the radio frequency amplified signal in a radio frequency signal collection time interval to output a radio frequency collected signal; and the radio frequency signal amplitude compensation module is configured to receive the modulated signal output by the modulator, calculate a radio frequency signal amplitude compensation amount based on the radio frequency collected signal, and perform amplitude compensation on the modulated signal at an amplitude compensation time associated with the radio frequency signal collection time interval based on the radio frequency signal amplitude compensation amount, and output an amplitude compensation signal, so that the amplitude of the radio frequency amplified signal after compensation is equal to the amplitude of the radio frequency amplified signal in a preset reference period.

[0018] In some embodiments, the radio frequency signal amplitude compensation module comprises a radio frequency signal amplitude compensation amount calculation submodule configured to calculate the radio frequency signal amplitude compensation amount based on the radio frequency acquisition signal; and a radio frequency signal amplitude compensation execution submodule configured to receive the modulated signal output by the modulator, and perform amplitude compensation on the modulated signal based on the radio frequency signal amplitude compensation amount, and output the amplitude compensated signal.

[0019] In some embodiments, the radio frequency signal acquisition module comprises a signal attenuator configured to attenuate the radio frequency amplified signal to obtain a radio frequency attenuated signal; a demodulator configured to demodulate the radio frequency attenuated signal to obtain a demodulated signal; and an analog-to-digital converter configured to sample the demodulated signal to obtain the radio frequency acquisition signal.

[0020] In some embodiments, the radio frequency signal acquisition module is further configured to receive an acquisition control signal, the acquisition control signal controlling the radio frequency signal acquisition module to acquire the radio frequency amplified signal within the radio frequency signal acquisition time interval.

[0021] In some embodiments, the wireless signal transmitter further comprises a baseband signal amplitude compensation module configured to calculate a baseband signal amplitude compensation amount based on the radio frequency acquisition signal, and perform amplitude compensation on an input baseband signal at an amplitude compensation time point associated with the radio frequency signal acquisition time interval, and output the amplitude compensated baseband signal as the input signal of the modulator, so that the amplitude of the radio frequency amplified signal after compensation is equal to the amplitude of the radio frequency amplified signal in the preset reference period.

[0022] In some embodiments, the baseband signal amplitude compensation module comprises a baseband signal amplitude compensation amount calculation submodule configured to calculate the baseband signal amplitude compensation amount based on the radio frequency acquisition signal; and a baseband signal amplitude compensation execution submodule configured to perform amplitude compensation on the baseband signal based on the baseband signal amplitude compensation amount, and output the amplitude compensated baseband signal.

[0023] In a fourth aspect of the present application, a wireless signal transmitter is provided, which comprises a modulator, a radio frequency amplifier, and a radio frequency signal amplitude compensation module. The modulator is configured to modulate an input baseband signal and output a modulated signal. The radio frequency amplifier is configured to receive an amplitude compensated signal output by the radio frequency signal amplitude compensation module, amplify the amplitude compensated signal, and obtain a radio frequency amplified signal. The radio frequency signal amplitude compensation module is configured to receive the modulated signal output by the modulator, calculate a radio frequency signal amplitude compensation amount, perform amplitude compensation on the modulated signal at an amplitude compensation time based on the radio frequency signal amplitude compensation amount, and output the amplitude compensated signal, so that the amplitude of the radio frequency amplified signal after compensation is equal to the amplitude of a radio frequency amplified signal in a preset reference period.

[0024] In some embodiments, the radio frequency signal amplitude compensation module comprises a radio frequency signal amplitude compensation amount calculation submodule configured to determine the radio frequency signal amplitude compensation amount in any of the following ways: (1) calculating the radio frequency signal amplitude compensation amount based on a preset amplitude drift amount model, and (2) reading the radio frequency signal amplitude compensation amount from pre-stored amplitude compensation data based on a preset amplitude drift amount model; and a radio frequency signal amplitude compensation execution submodule configured to receive the modulated signal output by the modulator, perform amplitude compensation on the modulated signal based on the radio frequency signal amplitude compensation amount, and output the amplitude compensated signal.

[0025] In a fifth aspect of the present application, a wireless signal transmission method is provided, which comprises: collecting a radio frequency amplified signal in a radio frequency signal collection time interval to obtain a radio frequency collection signal; calculating a signal amplitude compensation amount based on the radio frequency collection signal; performing amplitude compensation on a baseband signal at an amplitude compensation time associated with the radio frequency signal collection time interval based on the signal amplitude compensation amount to obtain an amplitude compensated signal; and modulating and amplifying the amplitude compensated signal to obtain a compensated radio frequency amplified signal, wherein the signal amplitude compensation amount makes the amplitude of the compensated radio frequency amplified signal equal to the amplitude of a radio frequency amplified signal in a preset reference period.

[0026] In a sixth aspect of the present application, a wireless signal transmission method is provided, which comprises: determining a signal amplitude compensation amount in any of the following ways: (1) calculating the signal amplitude compensation amount based on a preset amplitude drift amount model, and (2) reading the signal amplitude compensation amount from pre-stored amplitude compensation data based on a preset amplitude drift amount model; performing amplitude compensation on a baseband signal at an amplitude compensation time based on the signal amplitude compensation amount to obtain an amplitude compensated signal; and modulating and amplifying the amplitude compensated signal to obtain a compensated radio frequency amplified signal, wherein the signal amplitude compensation amount makes the amplitude of the compensated radio frequency amplified signal equal to the amplitude of a radio frequency amplified signal in a preset reference period.

[0027] In a seventh aspect, the present application provides a wireless signal transmitting method, comprising: collecting a radio frequency amplification signal in a radio frequency signal collection time interval to obtain a radio frequency collection signal; calculating a radio frequency signal amplitude compensation amount based on the radio frequency collection signal; performing amplitude compensation on a modulated signal at an amplitude compensation time point associated with the radio frequency signal collection time interval based on the radio frequency signal amplitude compensation amount to obtain an amplitude compensated signal; and amplifying the amplitude compensated signal to obtain a compensated radio frequency amplification signal, wherein the radio frequency signal amplitude compensation amount makes the amplitude of the compensated radio frequency amplification signal equal to the amplitude of a radio frequency amplification signal in a preset reference time period.

[0028] In an eighth aspect, the present application provides a wireless signal transmitting method, comprising: determining a radio frequency signal amplitude compensation amount based on any one of the following methods: (1) calculating the radio frequency signal amplitude compensation amount based on a preset amplitude drift amount model, and (2) reading the radio frequency signal amplitude compensation amount from pre-stored amplitude compensation data based on a preset amplitude drift amount model; performing amplitude compensation on a modulated signal at an amplitude compensation time point based on the radio frequency signal amplitude compensation amount to obtain an amplitude compensated signal; and amplifying the amplitude compensated signal to obtain a compensated radio frequency amplification signal, wherein the radio frequency signal amplitude compensation amount makes the amplitude of the compensated radio frequency amplification signal equal to the amplitude of a radio frequency amplification signal in a preset reference time period.

[0029] The above is a summary of the present application, which may have simplified, generalized and omitted details, so those skilled in the art should recognize that this part is only illustrative and is not intended to limit the scope of the present application in any way. This summary part is neither intended to determine the key features or essential features of the claimed subject matter, nor intended to serve as an auxiliary means to determine the scope of the claimed subject matter. BRIEF DESCRIPTION OF DRAWINGS

[0030] The above and other features of the present application will become more fully understood from the following detailed description and the accompanying drawings, in which:

[0031] Figure 1 A schematic diagram showing the principle of a general wireless signal transmitter is shown;

[0032] Figure 2 A structural block diagram of a wireless signal transmitter 100 according to an embodiment of the present application is shown;

[0033] Figure 3An embodiment of a schematic diagram of a radio frequency signal acquisition module 130 is shown;

[0034] Figure 4 An embodiment of a schematic diagram of a signal amplitude compensation module 120 is shown;

[0035] Figure 5A An embodiment of a schematic diagram of a radio frequency signal acquisition time interval and an amplitude compensation time instant of the present application is shown;

[0036] Figure 5B An embodiment of a schematic diagram of a radio frequency signal acquisition time interval and an amplitude compensation time instant of the present application is shown;

[0037] Figure 5C An embodiment of a schematic diagram of a radio frequency signal acquisition time interval and an amplitude compensation time instant of the present application is shown;

[0038] Figure 6 An embodiment of a simplified wireless signal transmitter 200 of the present application is shown;

[0039] Figure 7 An embodiment of a wireless signal transmitter 300 of the present application is shown;

[0040] Figure 8 An embodiment of a schematic diagram of a radio frequency signal amplitude compensation module 320 is shown;

[0041] Figure 9 An embodiment of a simplified wireless signal transmitter 400 of the present application is shown;

[0042] Figure 10 A wireless signal transmission method 500 according to an embodiment of the present application is shown;

[0043] Figure 11 A wireless signal transmission method 600 according to another embodiment of the present application is shown;

[0044] Figure 12 A wireless signal transmission method 700 according to another embodiment of the present application is shown;

[0045] Figure 13 A wireless signal transmission method 800 according to another embodiment of the present application is shown. DETAILED DESCRIPTION

[0046] The technical solutions of the present application are described in detail below with reference to the drawings. In the drawings, similar symbols generally indicate similar components, unless the context indicates otherwise. The specific implementations described in the detailed description, drawings, and claims are not intended to limit the scope of the present application. Other implementations can be utilized, and changes can be made without departing from the spirit or scope of the present application, and all such changes are intended to be part of this application and are within the scope of the present application.

[0047] The present application introduces a feedback compensation circuit to solve the signal amplitude drift problem of the prior art wireless signal transmitter. The feedback compensation circuit collects the radio frequency amplified signal input to the transmitter antenna, calculates the amplitude compensation amount based on the collected signal, and adjusts the amplitude of the signal based on the amplitude compensation amount, so that the amplitude of the radio frequency amplified signal input to the antenna remains unchanged, thereby effectively reducing the amplitude drift of the transmitted signal and improving the quality of the transmitted signal.

[0048] The wireless signal transmitter of the present application can be any device, equipment and system for transmitting wireless signals. For example, the wireless signal transmitter can be a radio broadcast transmitter, a wireless communication base station, a satellite communication transmitter, a wireless communication terminal, etc.

[0049] Figure 2 A structural block diagram of a wireless signal transmitter 100 according to an embodiment of the present application is shown. The wireless signal transmitter 100 is used to process the input baseband signal to obtain a radio frequency amplified signal, and transmit the radio frequency amplified signal through an antenna. For the sake of brevity, the antenna is not shown in the figure.

[0050] As shown in Figure 2 The wireless signal transmitter 100 includes a modulation and amplification module 110, a signal amplitude compensation module 120 and a radio frequency signal collection module 130.

[0051] The modulation and amplification module 110 is configured to receive the amplitude compensation signal output by the signal amplitude compensation module 120, and modulate and amplify the amplitude compensation signal to output a radio frequency amplified signal. It should be noted that the amplitude compensation signal here is the signal obtained after amplitude compensation of the baseband signal, and the difference between it and the baseband signal before amplitude compensation is mainly the difference in amplitude. Figure 1The transmitter shown is similar, the modulation and amplification module 110 includes a modulator and a radio frequency amplifier. The modulator is used to modulate the low frequency signal to get the high frequency modulated signal. The aforementioned low frequency signal refers to the low frequency signal carrying information, which can be an analog or digital signal. Depending on the type of transmitter 100, the modulator can be any device, module or equipment that modulates the low frequency signal to the high frequency carrier, and the modulation method can be any way to modulate the low frequency signal to the high frequency signal, such as amplitude modulation, frequency modulation or phase modulation, etc.; It can be quadrature modulation or non-quadrature modulation. The radio frequency amplifier amplifies the input modulated signal according to the set gain to obtain the radio frequency amplified signal, which can be transmitted through the antenna.

[0052] The radio frequency signal acquisition module 130 is configured to acquire the radio frequency amplified signal in the radio frequency signal acquisition time interval, and output the radio frequency acquisition signal. In some embodiments, the radio frequency signal acquisition module 130 is further configured to receive an acquisition control signal, which controls the radio frequency signal acquisition module 130 to acquire the radio frequency amplified signal in the radio frequency signal acquisition time interval.

[0053] Figure 3 An embodiment schematic diagram of the radio frequency signal acquisition module 130 is shown. In this embodiment, the radio frequency signal acquisition module 130 includes a signal attenuator 131, a demodulator 132 and an analog to digital converter (ADC) 133. The signal attenuator 131 attenuates the input radio frequency amplified signal according to the set attenuation coefficient to obtain the radio frequency attenuated signal. The demodulator 132 demodulates the radio frequency attenuated signal to obtain the demodulated signal. Demodulation is the inverse process of modulation, and its purpose is to extract the original low frequency baseband signal from the high frequency signal. The analog to digital converter 133 converts the demodulated signal into a digital signal to obtain the radio frequency acquisition signal.

[0054] The signal amplitude compensation module 120 is configured to calculate the signal amplitude compensation amount based on the radio frequency acquisition signal, and to perform amplitude compensation on the input baseband signal at the amplitude compensation moment associated with the radio frequency signal acquisition time interval, and output the amplitude compensated signal, so that the amplitude of the compensated radio frequency amplified signal is equal to the amplitude of the radio frequency amplified signal in the preset reference period. The preset reference period is a period set in advance, and the radio frequency amplified signal collected in this period is statistically analyzed to obtain an estimated value of the amplitude parameter, which can reflect the amplitude of the radio frequency amplified signal in the reference period. Here, the amplitude parameter refers to any statistical quantity that can reflect the amplitude of the signal, for example, the average value of the modulus of the signal amplitude, or the mean square value of the modulus of the signal amplitude can be calculated. Let the radio frequency acquisition signal obtained in a certain period be represented as x[k], k = 0, 1, …, K-1, then the amplitude parameter estimated based on the average value of the modulus of the signal amplitude can be calculated as follows

[0055]

[0056] The amplitude parameter based on the mean square value estimation of the modulus of the signal amplitude can be calculated by the following formula

[0057]

[0058] The preset reference period can be selected as needed, and can be set as an initial time period when the wireless signal transmitter 100 starts to continuously transmit a signal. The purpose of amplitude compensation is to offset the amplitude drift of the transmitted signal, so as to keep the amplitude of the radio frequency amplification signal constant. It should be noted that the amplitude compensation time associated with the radio frequency signal collection time interval refers to the time when the input baseband signal is compensated for the corresponding amplitude. The signal amplitude compensation amount used at the amplitude compensation time is calculated based on the radio frequency collection signal collected in the radio frequency signal collection time interval. Therefore, due to the processing delay, circuit delay and other reasons, the amplitude compensation time associated with a certain radio frequency signal collection time interval is always later than the end time of the radio frequency signal collection time interval.

[0059] Figure 4 An embodiment of the signal amplitude compensation module 120 is shown. In this embodiment, the signal amplitude compensation module 120 includes a signal amplitude compensation amount calculation submodule 121 and a signal amplitude compensation execution submodule 122. The signal amplitude compensation amount calculation submodule 121 calculates the signal amplitude compensation amount based on the radio frequency collection signal collected in the radio frequency signal collection time interval, and the signal amplitude compensation execution submodule 122 performs amplitude compensation on the input baseband signal at the amplitude compensation time associated with the radio frequency signal collection time interval according to the amplitude compensation amount calculated by the signal amplitude compensation amount calculation submodule 121, and outputs the amplitude compensated signal. The signal amplitude compensation execution submodule 122 can be a gain-variable analog baseband amplifier, or a digital signal amplification operation unit.

[0060] In some embodiments, when the wireless signal transmitter 100 transmits a signal, it continuously transmits for a period of time, then stops transmitting, and after a period of time, it continuously transmits for a period of time, and so on. For the sake of convenience, each continuous transmission is referred to as a transmission. The length of time for each continuous transmission and stop transmission depends on the specific implementation. One purpose of the present application is to compensate for the signal transmitted by the wireless signal transmitter 100, so that the amplitude of the signal transmitted by the wireless signal transmitter 100 through the radio frequency device is kept constant during a transmission.

[0061] In some embodiments, the wireless signal transmitter 100 transmits signals for a long time, and in this case, the transmission time can be divided into several time periods as needed, each time period is regarded as a transmission, and the amplitude compensation is performed for each time period to keep the amplitude of the signals transmitted by the radio frequency device as constant as possible in each time period.

[0062] The time interval of a transmission includes a plurality of radio frequency signal collection time intervals and an amplitude compensation moment associated with each radio frequency signal collection time interval. The radio frequency signal collection time intervals and the amplitude compensation moments can be arranged differently as needed. The radio frequency signal collection time intervals in the time interval of a transmission can be numbered in time sequence, and the earliest radio frequency signal collection time interval is regarded as the first radio frequency signal collection time interval, and the amplitude compensation moment associated with the first radio frequency signal collection time interval is regarded as the first amplitude compensation moment.

[0063] If the estimated value of the amplitude parameter of the radio frequency collection signal in the preset reference period is represented as P(0), and the estimated value of the amplitude parameter of the nth radio frequency signal collection time interval is represented as P(n), the signal amplitude compensation amount AG(n) of the nth amplitude compensation moment can be exemplarily represented as

[0064] AG(n) = Γ + P(0) - P(n) (3)

[0065] where Γ is an offset selected according to different amplitude parameter estimation methods, and the value is related to the gain G of the modulation and amplification module 110 and the attenuation L of the radio frequency signal collection module 130. In the case where other gains or attenuations of the circuit are not considered, Γ can be set as L-G, where the gain G, the attenuation L, the offset Γ, and the signal amplitude compensation amount AG(n) are all represented by “decibel (dB)”.

[0066] Figure 5A A schematic diagram of an arrangement of the radio frequency signal collection time intervals and the amplitude compensation moments of an embodiment of the present application is shown. In this embodiment, the amplitude compensation moment associated with the nth radio frequency signal collection time interval, i.e., the nth amplitude compensation moment, is earlier than the (n+1)th radio frequency signal collection time interval, where n is an integer. The advantage of this way is that after the signal is amplitude-compensated, the data collection is performed after waiting for the radio frequency amplification signal to be stable, which can make the signal amplitude compensation amount calculated by the signal amplitude compensation module 120 more accurate.

[0067] Figure 5BAnother arrangement of the RF signal acquisition time interval and the amplitude compensation time instant of the embodiment of the application is shown in the diagram. In this embodiment, the n-th amplitude compensation time instant is the start time instant of the n+1-th RF signal acquisition time interval. In this way, the sampling of the RF amplification signal is started immediately after the amplitude compensation, and the time interval between two amplitude compensations can be shorter, so that the amplitude of the RF amplification signal converges to the amplitude of the RF amplification signal in the reference time period more quickly.

[0068] Figure 5C Another arrangement of the RF signal acquisition time interval and the amplitude compensation time instant of the embodiment of the application is shown in the diagram. In this embodiment, the n-th amplitude compensation time instant is the start time instant of the n+1-th RF signal acquisition time interval. In this way, the sampling of the RF amplification signal is started immediately after the amplitude compensation, and the time interval between two amplitude compensations can be shorter, so that the amplitude of the RF amplification signal converges to the amplitude of the RF amplification signal in the reference time period more quickly.

[0069] In some embodiments, the estimated value of the amplitude parameter can be filtered to reduce the estimation error of the estimated value of the amplitude parameter in the RF signal acquisition time interval, and to improve the compensation accuracy. The filtering method can be smoothing filtering, Kalman filtering, etc., and the specific filtering method can be selected according to the calculation complexity and the filtering effect.

[0070] As can be seen from the above description, the wireless signal transmitter 100 acquires the RF amplification signal to obtain an estimated value reflecting the amplitude of the RF amplification signal, and then compares the estimated value with the amplitude of the RF amplification signal in the reference time period to determine the signal amplitude compensation amount and compensate the signal amplitude, so that the signal amplitude drift problem caused by various factors can be accurately compensated, and the quality of the transmitted signal can be improved.

[0071] In some cases, the signal amplitude drift can have a certain regularity, and the amplitude drift amount can be modeled using the regularity. In this case, the wireless signal transmitter can no longer need the signal acquisition module, so that the power consumption and cost of the wireless signal can be reduced. Figure 6 A structure block diagram of a simplified wireless signal transmitter 200 of the embodiment of the application is shown.

[0072] As Figure 6 shown, the wireless signal transmitter 200 includes a modulation amplification module 210 and a signal amplitude compensation module 220.

[0073] The modulation and amplification module 210 is configured to receive the amplitude compensation signal output by the signal amplitude compensation module 220, and modulate and amplify the amplitude compensation signal to output a radio frequency amplified signal. The modulation and amplification module 210 can be implemented by using the modulation and amplification module 110 of the wireless signal transmitter 100.

[0074] The signal amplitude compensation module 220 is configured to calculate a signal amplitude compensation amount, and perform amplitude compensation on the input baseband signal at an amplitude compensation moment based on the signal amplitude compensation amount to output an amplitude compensation signal, so that the amplitude of the compensated radio frequency amplified signal is equal to the amplitude of the radio frequency amplified signal in the preset reference period.

[0075] The signal amplitude compensation module 220 includes a signal amplitude compensation amount calculation submodule and a signal amplitude compensation execution submodule.

[0076] In some embodiments, the signal amplitude compensation amount calculation submodule is configured to calculate the signal amplitude compensation amount based on a preset amplitude drift amount model.

[0077] In some embodiments, the signal amplitude compensation amount calculation submodule is configured to read the signal amplitude compensation amount from the pre-stored amplitude compensation data based on the preset amplitude drift amount model. This embodiment is suitable for the case where the signal amplitude drift has periodicity.

[0078] The signal amplitude compensation execution submodule can be implemented by using the signal amplitude compensation execution submodule 122 of the wireless signal transmitter 100.

[0079] Figure 7 A structural block diagram of a wireless signal transmitter 300 according to an embodiment of the present application is shown.

[0080] The wireless signal transmitter 300 includes a radio frequency amplifier 310, a radio frequency signal amplitude compensation module 320, a radio frequency signal acquisition module 330 and a modulator 340. The main difference between the wireless signal transmitter 300 and the wireless signal transmitter 100 is that the radio frequency signal amplitude compensation module 320 of the former is arranged between the modulator 340 and the radio frequency amplifier 310, while the signal amplitude compensation module 120 of the latter is arranged before the modulation and amplification module 110.

[0081] The radio frequency amplifier 310 can be implemented by using the radio frequency amplifier used by the modulation and amplification module 110 of the wireless signal transmitter 100. The radio frequency signal acquisition module 330 can be implemented by using the radio frequency signal acquisition module 130 used by the wireless signal transmitter 100.

[0082] The RF signal amplitude compensation module 320 is configured to receive the modulated signal output by the modulator, calculate the RF signal amplitude compensation amount based on the RF acquisition signal, and perform amplitude compensation on the modulated signal output by the modulator 340 at the amplitude compensation time associated with the RF signal acquisition time interval, and output the amplitude compensation signal. The purpose of amplitude compensation is to make the amplitude of the compensated RF amplified signal equal to the amplitude of the RF amplified signal in the preset reference time period.

[0083] Figure 8 A schematic diagram of an embodiment of the radio frequency (RF) signal amplitude compensation module 320 is shown. In this embodiment, the RF signal amplitude compensation module 320 includes an RF signal amplitude compensation amount calculation submodule 321 and an RF signal amplitude compensation execution submodule 322. The RF signal amplitude compensation amount calculation submodule 321 can employ... Figure 4 The amplitude compensation calculation submodule 121 in the embodiment of the signal amplitude compensation module 120 shown. The function of the radio frequency signal amplitude compensation execution submodule 322 is similar to that of the signal amplitude compensation execution submodule 122. The difference is that the radio frequency signal amplitude compensation execution submodule 322 is used to compensate the modulated signal, and the modulated signal is usually a radio frequency signal. Therefore, the radio frequency signal amplitude compensation execution submodule 322 can be implemented using a variable gain radio frequency amplifier. Similarly, the radio frequency signal amplitude compensation amount can be calculated using formula (3).

[0084] In some embodiments, the wireless signal transmitter 300 further includes a baseband signal amplitude compensation module (not shown in the figure). The baseband signal amplitude compensation module is configured to receive the baseband signal input, calculate the baseband signal amplitude compensation amount based on the radio frequency acquisition signal, and perform amplitude compensation on the input baseband signal at the amplitude compensation time associated with the radio frequency signal acquisition time interval, and output the amplitude-compensated baseband signal as the input signal of the modulator 340. After baseband signal amplitude compensation and radio frequency signal amplitude compensation, the amplitude of the compensated radio frequency amplified signal is equal to the amplitude of the radio frequency amplified signal in the preset reference time period. In this embodiment, the total signal amplitude compensation amount can be calculated using formula (3), and then the total signal amplitude compensation amount is allocated to the baseband signal amplitude compensation amount and the radio frequency signal amplitude compensation amount, so that the sum of the baseband signal amplitude compensation amount and the radio frequency signal amplitude compensation amount is equal to the total signal amplitude compensation amount. The specific allocation method can be arranged as needed.

[0085] Similarly, when the signal amplitude drift has a certain regularity, a simplified wireless transmitter can be used. Figure 9 A simplified structural block diagram of a wireless signal transmitter 400 according to an embodiment of this application is shown.

[0086] like Figure 9As shown, the wireless signal transmitter 400 comprises a radio frequency amplifier 410, a radio frequency signal amplitude compensation module 420 and a modulator 430.

[0087] The radio frequency amplifier 410 can be implemented by the radio frequency amplifier 310 of the wireless signal transmitter 300.

[0088] The radio frequency signal amplitude compensation module 420 is configured to calculate a radio frequency signal amplitude compensation amount, and perform amplitude compensation on the modulated signal output by the modulator 430 at an amplitude compensation time based on the radio frequency signal amplitude compensation amount, to output an amplitude compensated signal, so that the amplitude of the compensated radio frequency amplification signal is equal to the amplitude of the radio frequency amplification signal in a preset reference time period.

[0089] The radio frequency signal amplitude compensation module 420 comprises a radio frequency signal amplitude compensation amount calculation submodule and a radio frequency signal amplitude compensation execution submodule.

[0090] In some embodiments, the radio frequency signal amplitude compensation amount calculation submodule is configured to calculate the radio frequency signal amplitude compensation amount based on a preset amplitude drift amount model.

[0091] In some embodiments, the radio frequency signal amplitude compensation amount calculation submodule is configured to read the radio frequency signal amplitude compensation amount from pre-stored amplitude compensation data based on a preset amplitude drift amount model. This embodiment is suitable for the case where the signal amplitude drift has periodicity.

[0092] The radio frequency signal amplitude compensation execution submodule can be implemented by the radio frequency signal amplitude compensation execution submodule 322 of the wireless signal transmitter 300.

[0093] Figure 10 A wireless signal transmission method 500 according to an embodiment of the present application is shown. The wireless signal transmission method 500 can be implemented by the wireless signal transmitter 100 shown. Figure 2

[0094] The wireless signal transmission method 500 comprises the following steps: in step 510, a radio frequency amplification signal is collected in a radio frequency signal collection time interval to obtain a radio frequency collection signal. In step 520, a signal amplitude compensation amount is calculated based on the radio frequency collection signal. In step 530, a baseband signal is amplitude compensated at an amplitude compensation time associated with the radio frequency signal collection time interval based on the signal amplitude compensation amount, to obtain an amplitude compensated signal. In step 540, the amplitude compensated signal is modulated and amplified to obtain a compensated radio frequency amplification signal. The signal amplitude compensation amount makes the amplitude of the compensated radio frequency amplification signal equal to the amplitude of the radio frequency amplification signal in a preset reference time period.

[0095] Figure 11 ​A wireless signal transmitting method 600 according to another embodiment of the present application is shown. The wireless signal transmitting method 600 can be implemented by the wireless signal transmitter 200 shown in Figure 6

[0096] The wireless signal transmitting method 600 comprises the following steps: in step 610, determining a signal amplitude compensation amount based on any one of the following methods: (1) calculation based on a preset amplitude drift amount model; (2) reading from pre-stored amplitude compensation data based on a preset amplitude drift amount model. In step 620, amplitude compensating the baseband signal at an amplitude compensation time based on the signal amplitude compensation amount to obtain an amplitude compensated signal. In step 630, modulating and amplifying the amplitude compensated signal to obtain a compensated radio frequency amplified signal. The signal amplitude compensation amount makes the amplitude of the compensated radio frequency amplified signal equal to the amplitude of the radio frequency amplified signal in a preset reference time period.

[0097] Figure 12 A wireless signal transmitting method 700 according to another embodiment of the present application is shown. The wireless signal transmitting method 700 can be implemented by the wireless signal transmitter 300 shown in Figure 7

[0098] The wireless signal transmitting method 700 comprises the following steps: in step 710, collecting a radio frequency amplified signal in a radio frequency signal collection time interval to obtain a radio frequency collected signal. In step 720, calculating a radio frequency signal amplitude compensation amount based on the radio frequency collected signal. In step 730, amplitude compensating a modulated signal at an amplitude compensation time associated with the radio frequency signal collection time interval based on the radio frequency signal amplitude compensation amount to obtain an amplitude compensated signal. In step 740, amplifying the amplitude compensated signal to obtain a compensated radio frequency amplified signal. The radio frequency signal amplitude compensation amount makes the amplitude of the compensated radio frequency amplified signal equal to the amplitude of the radio frequency amplified signal in a preset reference time period.

[0099] Figure 13 A wireless signal transmitting method 800 according to another embodiment of the present application is shown. The wireless signal transmitting method 800 can be implemented by the wireless signal transmitter 400 shown in Figure 7

[0100] ​​​The wireless signal transmitting method 800 comprises the following steps: in step 810, determining a radio frequency signal amplitude compensation amount based on any one of the following methods: (1) calculation based on a preset amplitude drift amount model; (2) reading from pre-stored amplitude compensation data based on the preset amplitude drift amount model. In step 820, amplitude compensation is performed on the modulated signal at the amplitude compensation moment based on the radio frequency signal amplitude compensation amount, to obtain an amplitude compensated signal. In step 830, the amplitude compensated signal is amplified to obtain a compensated radio frequency amplified signal. The radio frequency signal amplitude compensation amount makes the amplitude of the compensated radio frequency amplified signal equal to the amplitude of the radio frequency amplified signal in the preset reference period.

[0101] Those skilled in the art of the present technology can understand and implement other changes to the disclosed embodiments by reading the specification, disclosure and drawings and the appended claims, which all fall within the protection scope of the claims of the present disclosure without deviating from the essence of the claims of the present disclosure. In the claims, the word "comprising" does not exclude other elements and steps, and the word "a" or "one" does not exclude a plurality. In the practical application of the present application, one part or module can perform the functions of multiple technical features referred to in the claims. Any reference signs in the claims should not be understood as limiting the scope.

Claims

1. A wireless signal transmitter, characterized by The wireless signal transmitter comprises a modulation amplification module, a radio frequency signal acquisition module and a signal amplitude compensation module, wherein The modulation amplification module is configured to receive the amplitude compensation signal output by the signal amplitude compensation module, and modulate and amplify the amplitude compensation signal to output a radio frequency amplification signal; The radio frequency signal acquisition module is configured to acquire the radio frequency amplification signal in a radio frequency signal acquisition time interval to output a radio frequency acquisition signal, and each radio frequency signal acquisition time interval is associated with an amplitude compensation time point; The signal amplitude compensation module is configured to calculate a signal amplitude compensation amount based on the radio frequency acquisition signal, and perform amplitude compensation on the input baseband signal at the amplitude compensation time point associated with the radio frequency signal acquisition time interval based on the signal amplitude compensation amount, and output the amplitude compensation signal, so that the amplitude of the radio frequency amplification signal after compensation is equal to the amplitude of the radio frequency amplification signal in a preset reference period.

2. The wireless signal transmitter of claim 1, wherein, The modulation amplification module comprises: a modulator configured to modulate the amplitude compensation signal output by the signal amplitude compensation module to output a modulated signal; and a radio frequency amplifier configured to amplify the modulated signal to obtain the radio frequency amplification signal.

3. The wireless signal transmitter of claim 1, wherein, The signal amplitude compensation module comprises: a signal amplitude compensation amount calculation submodule configured to calculate the signal amplitude compensation amount based on the radio frequency acquisition signal; and a signal amplitude compensation execution submodule configured to perform amplitude compensation on the input baseband signal based on the signal amplitude compensation amount to output the amplitude compensation signal.

4. The wireless signal transmitter of claim 1, wherein, The radio frequency signal acquisition module comprises: a signal attenuator configured to attenuate the radio frequency amplification signal to obtain a radio frequency attenuation signal; a demodulator configured to demodulate the radio frequency attenuation signal to obtain a demodulated signal; and an analog-to-digital converter configured to sample the demodulated signal to obtain the radio frequency acquisition signal.

5. The wireless signal transmitter of claim 1, wherein, The radio frequency signal acquisition module is further configured to receive an acquisition control signal, and the acquisition control signal controls the radio frequency signal acquisition module to acquire the radio frequency amplification signal in the radio frequency signal acquisition time interval.

6. The wireless signal transmitter of claim 1, wherein, The amplitude compensation time point associated with the nth radio frequency signal acquisition time interval is earlier than the start time point of the (n+1)th radio frequency signal acquisition time interval, wherein n is a positive integer.

7. The wireless signal transmitter of claim 1, wherein, The amplitude compensation time point associated with the nth radio frequency signal acquisition time interval is the start time point of the (n+1)th radio frequency signal acquisition time interval, wherein n is a positive integer.

8. The wireless signal transmitter of claim 1, wherein, The adjacent two radio frequency signal acquisition time intervals partially overlap.

9. A wireless signal transmitter, characterized by The wireless signal transmitter comprises a modulation amplification module and a signal amplitude compensation module, wherein The modulation amplification module is configured to receive the amplitude compensation signal output by the signal amplitude compensation module, and modulate and amplify the amplitude compensation signal to output a radio frequency amplification signal; The signal amplitude compensation module is configured to calculate a signal amplitude compensation amount, and perform amplitude compensation on the input baseband signal at an amplitude compensation time based on the signal amplitude compensation amount, and output the amplitude compensated signal, so that the amplitude of the radio frequency amplification signal after compensation is equal to the amplitude of the radio frequency amplification signal in a preset reference period. The signal amplitude compensation amount calculation submodule is configured to determine the signal amplitude compensation amount in any of the following ways: (1) calculating the signal amplitude compensation amount based on a preset amplitude drift amount model; (2) reading the signal amplitude compensation amount from pre-stored amplitude compensation data based on a preset amplitude drift amount model, and The signal amplitude compensation execution submodule is configured to perform amplitude compensation on the baseband signal based on the signal amplitude compensation amount, and output the amplitude compensated signal.

10. The wireless signal transmitter of claim 9, wherein, The modulation and amplification module includes: The modulator is configured to modulate the amplitude compensated signal output by the signal amplitude compensation module, and output a modulated signal; and The radio frequency amplifier is configured to amplify the modulated signal to obtain the radio frequency amplification signal.

11. A wireless signal transmitter, characterized by The radio frequency signal transmitter includes a modulator, a radio frequency amplifier, a radio frequency signal acquisition module, and a radio frequency signal amplitude compensation module, wherein The modulator is configured to modulate the input baseband signal and output a modulated signal; The radio frequency amplifier is configured to receive the amplitude compensated signal output by the radio frequency signal amplitude compensation module, and amplify the amplitude compensated signal to obtain a radio frequency amplification signal; The radio frequency signal acquisition module is configured to acquire the radio frequency amplification signal in a radio frequency signal acquisition time interval, and output a radio frequency acquisition signal, each radio frequency signal acquisition time interval being associated with an amplitude compensation time; and The radio frequency signal amplitude compensation module is configured to receive the modulated signal output by the modulator, calculate a radio frequency signal amplitude compensation amount based on the radio frequency acquisition signal, and perform amplitude compensation on the modulated signal at the amplitude compensation time associated with the radio frequency signal acquisition time interval based on the radio frequency signal amplitude compensation amount, and output an amplitude compensated signal, so that the amplitude of the radio frequency amplification signal after compensation is equal to the amplitude of the radio frequency amplification signal in a preset reference period.

12. The wireless signal transmitter of claim 11, wherein, The radio frequency signal amplitude compensation module includes: The radio frequency signal amplitude compensation amount calculation submodule is configured to calculate the radio frequency signal amplitude compensation amount based on the radio frequency acquisition signal; and The radio frequency signal amplitude compensation execution submodule is configured to receive the modulated signal output by the modulator, and perform amplitude compensation on the modulated signal based on the radio frequency signal amplitude compensation amount, and output the amplitude compensated signal.

13. The wireless signal transmitter of claim 11, wherein, The radio frequency signal acquisition module includes: The signal attenuator is configured to attenuate the radio frequency amplification signal to obtain a radio frequency attenuated signal; The demodulator is configured to demodulate the radio frequency attenuated signal to obtain a demodulated signal; and The analog-to-digital converter is configured to sample the demodulated signal to obtain the radio frequency acquisition signal.

14. The wireless signal transmitter of claim 11, wherein, The radio frequency signal acquisition module is further configured to receive an acquisition control signal, and the acquisition control signal controls the radio frequency signal acquisition module to acquire the radio frequency amplified signal in the radio frequency signal acquisition time interval.

15. The wireless signal transmitter of claim 11, wherein, The wireless signal transmitter further comprises a baseband signal amplitude compensation module, which is configured to calculate a baseband signal amplitude compensation amount based on the radio frequency acquisition signal, and to perform amplitude compensation on the input baseband signal at an amplitude compensation moment associated with the radio frequency signal acquisition time interval, and to output the amplitude-compensated baseband signal as the input signal of the modulator, so that the amplitude of the radio frequency amplified signal after compensation is equal to the amplitude of the radio frequency amplified signal in a preset reference period.

16. The wireless signal transmitter of claim 15, wherein, The baseband signal amplitude compensation module comprises: a baseband signal amplitude compensation amount calculation submodule, which is configured to calculate the baseband signal amplitude compensation amount based on the radio frequency acquisition signal; and a baseband signal amplitude compensation execution submodule, which is configured to perform amplitude compensation on the baseband signal based on the baseband signal amplitude compensation amount, and to output the amplitude-compensated baseband signal.

17. The wireless signal transmitter of claim 11, wherein, The amplitude compensation moment associated with the nth radio frequency signal acquisition time interval is earlier than the start moment of the (n+1)th radio frequency signal acquisition time interval, where n is a positive integer.

18. The wireless signal transmitter of claim 11, wherein, The amplitude compensation moment associated with the nth radio frequency signal acquisition time interval is the start moment of the (n+1)th radio frequency signal acquisition time interval, where n is a positive integer.

19. The wireless signal transmitter of claim 11, wherein, The adjacent two radio frequency signal acquisition time intervals partially overlap.

20. A wireless signal transmitter, characterized by The wireless signal transmitter comprises a modulator, a radio frequency amplifier, and a radio frequency signal amplitude compensation module, wherein The modulator is configured to modulate the input baseband signal and output a modulated signal; The radio frequency amplifier is configured to receive the amplitude-compensated signal output by the radio frequency signal amplitude compensation module, and to amplify the amplitude-compensated signal to obtain a radio frequency amplified signal; The radio frequency signal amplitude compensation module is configured to receive the modulated signal output by the modulator, to calculate a radio frequency signal amplitude compensation amount, and to perform amplitude compensation on the modulated signal at an amplitude compensation moment based on the radio frequency signal amplitude compensation amount, and to output the amplitude-compensated signal, so that the amplitude of the radio frequency amplified signal after compensation is equal to the amplitude of the radio frequency amplified signal in a preset reference period, and the radio frequency signal amplitude compensation module comprises: a radio frequency signal amplitude compensation amount calculation submodule, which is configured to determine the radio frequency signal amplitude compensation amount in any of the following ways: (1) calculating the radio frequency signal amplitude compensation amount based on a preset amplitude drift amount model, and (2) reading the radio frequency signal amplitude compensation amount from pre-stored amplitude compensation data based on a preset amplitude drift amount model; and a radio frequency signal amplitude compensation execution submodule, which is configured to receive the modulated signal output by the modulator, and to perform amplitude compensation on the modulated signal based on the radio frequency signal amplitude compensation amount, and to output the amplitude-compensated signal.

21. A method of transmitting a wireless signal, the method comprising: The method comprises: acquiring a radio frequency amplified signal in a radio frequency signal acquisition time interval to obtain a radio frequency acquisition signal, and each radio frequency signal acquisition time interval is associated with an amplitude compensation moment; calculating a signal amplitude compensation quantity based on the radio frequency acquisition signal; amplitude compensating a baseband signal at an amplitude compensation time point associated with the radio frequency signal acquisition time interval based on the signal amplitude compensation quantity, to obtain an amplitude compensated signal; and modulating and amplifying the amplitude compensated signal to obtain a compensated radio frequency amplification signal, wherein the signal amplitude compensation quantity makes the amplitude of the compensated radio frequency amplification signal equal to the amplitude of the radio frequency amplification signal in a preset reference period.

22. A method of transmitting a wireless signal, the method comprising: The method comprises: determining a signal amplitude compensation quantity based on any of the following methods: (1) calculating the signal amplitude compensation quantity based on a preset amplitude drift quantity model, (2) reading the signal amplitude compensation quantity from pre-stored amplitude compensation data based on a preset amplitude drift quantity model; amplitude compensating a baseband signal at an amplitude compensation time point associated with the radio frequency signal acquisition time interval based on the signal amplitude compensation quantity, to obtain an amplitude compensated signal; and modulating and amplifying the amplitude compensated signal to obtain a compensated radio frequency amplification signal, wherein the signal amplitude compensation quantity makes the amplitude of the compensated radio frequency amplification signal equal to the amplitude of the radio frequency amplification signal in a preset reference period.

23. A method of transmitting a wireless signal, the method comprising: The method comprises: acquiring a radio frequency amplification signal in a radio frequency signal acquisition time interval to obtain a radio frequency acquisition signal, each radio frequency signal acquisition time interval being associated with an amplitude compensation time point; calculating a radio frequency signal amplitude compensation quantity based on the radio frequency acquisition signal; amplitude compensating a baseband signal at an amplitude compensation time point associated with the radio frequency signal acquisition time interval based on the signal amplitude compensation quantity, to obtain an amplitude compensated signal; and amplitude compensating a baseband signal at an amplitude compensation time point associated with the radio frequency signal acquisition time interval based on the signal amplitude compensation quantity, to obtain an amplitude compensated signal; and amplitude compensating a baseband signal at an amplitude compensation time point associated with the radio frequency signal acquisition time interval based on the signal amplitude compensation quantity, to obtain an amplitude compensated signal; and 24. A method of transmitting a wireless signal, the method comprising: amplifying the amplitude compensated signal to obtain a compensated radio frequency amplification signal, wherein the radio frequency signal amplitude compensation quantity makes the amplitude of the compensated radio frequency amplification signal equal to the amplitude of the radio frequency amplification signal in a preset reference period. The method comprises: determining a radio frequency signal amplitude compensation quantity based on any of the following methods: (1) calculating the radio frequency signal amplitude compensation quantity based on a preset amplitude drift quantity model, (2) reading the radio frequency signal amplitude compensation quantity from pre-stored amplitude compensation data based on a preset amplitude drift quantity model; amplitude compensating a baseband signal at an amplitude compensation time point associated with the radio frequency signal acquisition time interval based on the signal amplitude compensation quantity, to obtain an amplitude compensated signal; and amplitude compensating a baseband signal at an amplitude compensation time point associated with the radio frequency signal acquisition time interval based on the signal amplitude compensation quantity, to obtain an amplitude compensated signal; and amplifying the amplitude compensated signal to obtain a compensated radio frequency amplification signal, wherein the radio frequency signal amplitude compensation quantity makes the amplitude of the compensated radio frequency amplification signal equal to the amplitude of the radio frequency amplification signal in a preset reference period.

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