Signal conditioning system, method and device, electronic equipment and chip

Abstract

The invention discloses a signal conditioning system, method and device, electronic equipment and a chip, and relates to the technical field of communication.The signal conditioning system comprises a radio frequency front-end module and a program control module.The method specifically comprises the steps that firstly, a first analog signal to be processed currently is amplified and conditioned at the radio frequency front-end module according to a first analog gain; obtaining a second analog signal; then detecting a second analog signal through a program control module, and performing rollback processing on the first analog gain under the condition that a power detection result of the second analog signal meets a preset power saturation condition to obtain a second analog gain; wherein the second analog gain is used for indicating the radio frequency front-end module to amplify and condition a third analog signal to be processed next time. Compared with the prior art, the power can be monitored in real time, the situation of signal saturation distortion is avoided, and it is ensured that the performance of the receiver is in a stable state in the signal conditioning process.

Description

Technical Field

[0001] The present application relates to the field of communication processing technology, and in particular to a signal conditioning system, method, device, electronic device and chip. Background Art

[0002] In a wireless communication system, the receiver at the RF front end receives electromagnetic wave signals through an antenna and converts them into analog signals, conditions the analog signals, and then converts the conditioned signals into baseband and sends them to the circuit.

[0003] At present, in the process of amplifying and conditioning analog signals, it is necessary to determine the analog gain and digital gain according to the preset gain mapping relationship, use the automatic gain control (AGC) circuit to amplify the signal, and then perform amplification and conditioning processes such as filtering, isolation, modulation and demodulation on the analog signal.

[0004] However, when using an AGC circuit to amplify and condition analog signals, the analog gain of the analog signal cannot be adjusted in time when there is a sudden change in power, which in turn causes distortion of the analog signal and affects the signal conditioning performance of the receiver. Summary of the invention

[0005] In view of this, the present application provides a signal conditioning system, method, device, electronic device and chip, the main purpose of which is to improve the technical problem that the current existing technology will lead to the inability to adjust the analog gain of the analog signal in time, thereby causing analog signal distortion and affecting the receiver's signal conditioning performance.

[0006] In a first aspect, the present application provides a signal conditioning system, comprising: a radio frequency front-end module and a program control module connected to the radio frequency front-end module;

[0007] The RF front-end module is used to amplify and condition the first analog signal to be processed according to the first analog gain to obtain a second analog signal;

[0008] The program control module is used to detect the second analog signal, and when the power detection result of the second analog signal meets the preset power saturation condition, perform fallback processing on the first analog gain to obtain a second analog gain;

[0009] The second analog gain is used to instruct the RF front-end module to amplify and condition the third analog signal to be processed next time.

[0010] Optionally, the radio frequency front-end module includes: a first front-end unit;

[0011] The first front-end unit is used to use a low-noise amplifier to amplify and condition the first analog signal according to the first analog gain to obtain the second analog signal, wherein the first analog gain is determined based on a first analog gain factor.

[0012] Optionally, the program control module includes: a power detection unit and a power processing unit;

[0013] The power detection unit and the power processing unit are respectively connected to the RF front-end module;

[0014] The power detection unit is used to trigger the power saturation cumulative counting when detecting that there is a power saturation signal with power greater than or equal to a preset power saturation threshold in the second analog signal;

[0015] The power processing unit is used to perform gain backoff processing on the first analog gain factor to obtain a second analog gain factor when it is determined that the value of the power saturation cumulative count is greater than or equal to a preset count threshold, wherein the second analog gain factor is used to determine the second analog gain.

[0016] Optionally, the program control module further includes: an analog gain generation unit connected to the RF front-end module;

[0017] The analog gain generating unit is used to convert the second analog signal into a first digital signal using a first signal converter, and the conversion accuracy of the first signal converter is less than a first preset accuracy threshold;

[0018] The analog gain generation unit is also used to determine the digital signal to be analyzed based on the first digital signal and the communication scenario information corresponding to the first digital signal; and analyze the digital signal to be analyzed to obtain a third analog gain factor, wherein the third analog gain factor is used to determine a third analog gain.

[0019] Optionally, the RF front-end module further includes: a second front-end unit;

[0020] The second front-end unit is connected to the first front-end unit and the analog gain generating unit respectively;

[0021] The second front-end unit is used to amplify and condition the second analog signal according to the third analog gain to obtain a fourth analog signal.

[0022] Optionally, the analog gain generation unit is also used to analyze the first average power of the digital signal to be analyzed within a preset time period, and determine a first power difference of the digital signal to be analyzed based on the first average power and a first preset target power; and process the first power difference to obtain the third analog gain factor.

[0023] Optionally, the analog gain generation unit is further used to determine a differential component and an accumulated amount corresponding to the power difference based on the power difference; and perform weighted analysis on the power difference, the differential component and the accumulated amount to obtain the third analog gain factor.

[0024] Optionally, the RF front-end module further includes: a random access memory (RAM);

[0025] The RAM is used to store a fourth analog gain used by the RF front-end module for the analog signal that was amplified and conditioned last time corresponding to the first analog signal;

[0026] The analog gain generating unit is further used to read a fourth analog gain factor in the RAM, wherein the fourth analog gain factor is used to determine a fourth analog gain used by the analog signal that was amplified and conditioned last time and corresponds to the first analog signal.

[0027] Optionally, the analog gain generation unit is further used to perform weighted analysis on the power difference, the differential amount and the accumulated amount to obtain an increment corresponding to the third analog gain factor; and determine the third analog gain factor based on the increment and the fourth analog gain factor.

[0028] Optionally, the analog gain generation unit is also used to, if it is judged that the communication scene information is normal scene information, determine the first digital signal as the digital signal to be analyzed; if it is judged that the communication scene information is stable scene information, process the first digital signal to obtain a second digital signal, and determine the second digital signal as the digital signal to be analyzed.

[0029] Optionally, the analog gain generation unit is further used to filter the first digital signal by using an integrator-comb cascade CIC filter; and perform filtering compensation processing on the processed first digital signal to obtain the second digital signal.

[0030] Optionally, the analog gain generation unit is further used to perform correction compensation filtering processing on the processed first digital signal according to a first preset condition and a second preset condition; and determine the second digital signal based on the correction compensation filtering processing result.

[0031] Optionally, the analog gain generation unit is further used to filter the modified compensation filtering result through an adjacent channel suppression filter to obtain the second digital signal.

[0032] Optionally, the analog gain generating unit is further used to determine a fifth analog gain factor corresponding to the second analog signal based on the second analog gain factor and the third analog gain factor;

[0033] The second front-end unit is further used to determine a fifth analog gain used for signal amplification and conditioning of the third analog signal according to the fifth analog gain factor;

[0034] The RAM is further used to store the fifth analog gain factor.

[0035] Optionally, the RF front-end module further includes: a signal conversion unit and a third front-end unit;

[0036] The signal conversion unit is connected to the second front-end module and the third front-end module respectively;

[0037] The signal conversion unit is used to convert the fourth analog signal into a third digital signal through a second signal converter, and the conversion accuracy of the first signal converter is greater than a second preset conversion accuracy threshold;

[0038] The third front-end unit is used to input the third digital signal into the program control module.

[0039] Optionally, the program control module further includes: a digital gain generating unit;

[0040] The digital gain generating unit is used to determine the second average power of the third digital signal within the preset time period, and determine the second power difference of the third digital signal based on the second average power and the second preset target power; determine the digital gain factor corresponding to the third digital signal according to the second power difference and the fifth analog gain factor; and process the fifth analog gain factor and the digital gain to obtain a compensation gain factor used for signal amplification and conditioning of the third analog signal.

[0041] Optionally, the RF front-end module further includes: a fourth front-end unit;

[0042] The fourth front-end unit is connected to the third front-end unit and the digital gain generating unit respectively;

[0043] The fourth front-end unit is used to determine the digital gain used for signal amplification and conditioning of the third analog signal based on the digital gain factor; determine the compensation gain used for signal amplification and conditioning of the third analog signal based on the compensation gain factor, and perform signal amplification and conditioning on the third analog signal based on the compensation gain.

[0044] In a second aspect, the present application provides a signal conditioning method, comprising:

[0045] Inputting the first analog signal to be processed into a low noise amplifier of the receiver to amplify and condition it according to the first analog gain to obtain a second analog signal;

[0046] Performing power detection on the second analog signal;

[0047] If the power detection result meets the preset power saturation condition, performing gain backoff processing on the first analog gain to obtain a second analog gain;

[0048] The third analog signal to be processed subsequently is input into the low noise amplifier to be amplified and conditioned according to the second analog gain.

[0049] In a third aspect, the present application provides a signal conditioning device, comprising:

[0050] A processing module is configured to input the first analog signal to be processed into a low noise amplifier of the receiver to amplify and condition it according to the first analog gain to obtain a second analog signal;

[0051] a detection module, configured to perform power detection on the second analog signal;

[0052] The processing module is also configured to perform gain back-off processing on the first analog gain to obtain a second analog gain if the power detection result meets the preset power saturation condition; and input the third analog signal to be processed subsequently into the low-noise amplifier to be amplified and conditioned according to the second analog gain.

[0053] In a fourth aspect, the present application provides an electronic device, comprising the system as described in the first aspect.

[0054] In a fifth aspect, the present application provides a chip comprising at least one processor and a communication interface; the communication interface is used to receive signals input into the chip or signals output from the chip, the processor communicates with the communication interface and implements the method described in the second aspect through logic circuits or execution code instructions.

[0055] By means of the above technical scheme, the present application provides a signal conditioning system, method, device, electronic device and chip, wherein the signal conditioning system includes a radio frequency front-end module and a program control module, specifically, firstly, the radio frequency front-end module amplifies and conditions the first analog signal to be processed according to the first analog gain to obtain the second analog signal; then, the program control module detects the second analog signal, and when the power detection result of the second analog signal meets the preset power saturation condition, the first analog gain is backed off to obtain the second analog gain; wherein, the second analog gain is used to instruct the radio frequency front-end module to amplify and condition the third analog signal to be processed next time. Compared with the current prior art, the present application can monitor the power in real time by setting a power detection link in the program control module, and when the power of the signal meets the preset power saturation condition, it can respond in time, adjust the size of the analog gain, and back off the analog gain of the signal to avoid the situation of signal saturation distortion, so as to ensure that the signal conditioning ability of the radio frequency front-end module will not be affected by the sudden change of the power of the signal, and ensure that the performance of the radio frequency front-end module is in a stable state during the signal conditioning process.

[0056] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0058] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0059] Figure 1 A schematic diagram of the structure of a signal conditioning system provided in an embodiment of the present application is shown;

[0060] Figure 2 A schematic diagram of a signal conditioning method provided in an embodiment of the present application is shown;

[0061] Figure 3 A schematic diagram of a signal conditioning method provided in an embodiment of the present application is shown;

[0062] Figure 4A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0063] Figure 5 A schematic diagram of an example structure provided by an embodiment of the present application is shown;

[0064] Figure 6 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0065] Figure 7 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0066] Figure 8 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0067] Fig. 9 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0068] Fig.10 A schematic diagram of an example process provided by an embodiment of the present application is shown;

[0069] Fig.11 A schematic diagram of the structure of a signal conditioning device provided in an embodiment of the present application is shown;

[0070] Figure 1 middle:

[0071] 1-RF front-end module, 11-first front-end unit, 12-second front-end unit, 13-signal conversion module, 14-third front-end unit, 15-fourth front-end unit;

[0072] 2-program control module, 21-power detection unit (not marked in the figure), 22-power processing unit (not marked in the figure), 23-analog gain generation unit (not marked in the figure), 24-digital gain generation unit (not marked in the figure). DETAILED DESCRIPTION

[0073] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0074] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0075] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0076] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0077] Combine the following Figure 1 A signal conditioning system according to some embodiments of the present application is described.

[0078] The present application provides a signal conditioning system, such as Figure 1 As shown, it includes: a radio frequency front-end module 1 and a program control module 2 connected to the radio frequency front-end module;

[0079] In a specific working process, the RF front-end module 1 is used to amplify and condition the first analog signal to be processed according to the first analog gain to obtain a second analog signal;

[0080] In a specific working process, the program control module 2 is used to detect the second analog signal, and when the power detection result of the second analog signal meets the preset power saturation condition, the first analog gain is backed off to obtain the second analog gain;

[0081] The second analog gain is used to instruct the RF front-end module to amplify and condition the third analog signal to be processed next time.

[0082] In view of this, the present embodiment provides a signal conditioning system, which monitors the power in real time by setting a power detection link in the program control module. When the power of the signal meets the preset power saturation condition, it can respond in time, adjust the size of the analog gain, and perform back-off processing on the analog gain of the signal to avoid signal saturation and distortion, thereby ensuring that the signal conditioning capability of the RF front-end module will not be affected by sudden changes in signal power, thereby ensuring that the performance of the RF front-end module is in a stable state during the signal conditioning process.

[0083] In some examples, the RF front-end module 1 includes: a first front-end unit 11;

[0084] In a specific working process, the first front-end unit 11 is used to use a low-noise amplifier to amplify and condition the first analog signal according to a first analog gain to obtain a second analog signal, wherein the first analog gain is determined based on a first analog gain factor.

[0085] In the embodiment of the present application, the program control module 2 includes: a power detection unit 21 and a power processing unit 22;

[0086] The power detection unit 21 and the power processing unit 22 are respectively connected to the RF front-end module 1;

[0087] Correspondingly, the power detection unit 21 is used to trigger the power saturation cumulative counting when detecting that there is a power saturation signal with power greater than or equal to a preset power saturation threshold in the second analog signal;

[0088] Optionally, the power processing unit 22 is used to perform gain backoff processing on the first analog gain factor to obtain a second analog gain factor when it is determined that the value of the power saturation cumulative count is greater than or equal to a preset count threshold, wherein the second analog gain factor is used to determine the second analog gain.

[0089] In some examples, the program control module 2 further includes: an analog gain generation unit 23 connected to the RF front-end module 1;

[0090] In a specific working process, the analog gain generation unit 23 is used to convert the second analog signal into a first digital signal using a first signal converter, and the conversion accuracy of the first signal converter is less than a first preset accuracy threshold;

[0091] Correspondingly, the analog gain generation unit 23 is also used to determine the digital signal to be analyzed based on the first digital signal and the communication scenario information corresponding to the first digital signal; and analyze the digital signal to be analyzed to obtain a third analog gain factor, wherein the third analog gain factor is used to determine the third analog gain.

[0092] In the embodiment of the present application, the RF front-end module 1 further includes: a second front-end unit 12;

[0093] The second front end unit 12 is connected to the first front end unit 11 and the analog gain generating unit 23 respectively;

[0094] Optionally, the second front-end unit 12 is used to amplify and condition the second analog signal according to a third analog gain to obtain a fourth analog signal.

[0095] In some examples, the analog gain generation unit 23 is also used to analyze the first average power of the digital signal to be analyzed within a preset time period, and determine the first power difference of the digital signal to be analyzed based on the first average power and the first preset target power; the first power difference is processed to obtain a third analog gain factor.

[0096] As an optional manner, the analog gain generating unit 23 is further configured to determine a differential component and an accumulated amount corresponding to the power difference based on the power difference; and perform weighted analysis on the power difference, the differential component and the accumulated amount to obtain a third analog gain factor.

[0097] In the embodiment of the present application, the RF front-end module 1 further includes: RAM;

[0098] Correspondingly, the RAM is used to store the fourth analog gain used by the RF front-end module 1 for the analog signal that was amplified and conditioned last time corresponding to the first analog signal;

[0099] Optionally, the analog gain generating unit 23 is further used to read a fourth analog gain factor in the RAM, wherein the fourth analog gain factor is used to determine a fourth analog gain used by the analog signal that was last amplified and conditioned corresponding to the first analog signal.

[0100] In some examples, the analog gain generation unit 23 is further used to perform weighted analysis on the power difference, the differential amount and the accumulated amount to obtain an increment corresponding to the third analog gain factor; and determine the third analog gain factor based on the increment and the fourth analog gain factor.

[0101] Correspondingly, the analog gain generation unit 23 is also used to determine the first digital signal as the digital signal to be analyzed if the communication scene information is judged to be normal scene information; if the communication scene information is judged to be stable scene information, the first digital signal is processed to obtain the second digital signal, and the second digital signal is determined as the digital signal to be analyzed.

[0102] It should be noted that the analog gain generating unit 23 is also used to filter the first digital signal by using an integral-comb cascade CIC filter; and perform filtering compensation processing on the processed first digital signal to obtain a second digital signal.

[0103] In the embodiment of the present application, the analog gain generation unit 23 is further used to perform correction compensation filtering processing on the processed first digital signal according to the first preset condition and the second preset condition; and determine the second digital signal based on the correction compensation filtering processing result.

[0104] Optionally, the analog gain generation unit 23 is further configured to filter the modified compensation filtering result through an adjacent channel suppression filter to obtain a second digital signal.

[0105] As an optional manner, the analog gain generation unit 23 is further configured to determine a fifth analog gain factor corresponding to the second analog signal based on the second analog gain factor and the third analog gain factor;

[0106] In some examples, the second front-end unit 12 is further used to determine a fifth analog gain used for signal amplification and conditioning of the third analog signal according to the fifth analog gain factor;

[0107] In the embodiment of the present application, the RAM is also used to store the fifth analog gain factor.

[0108] It should be noted that the RF front-end module 1 further includes: a signal conversion unit 13 and a third front-end unit 14;

[0109] Correspondingly, the signal conversion unit 13 is connected to the second front-end module 12 and the third front-end module 14 respectively;

[0110] Optionally, the signal conversion unit 13 is used to convert the fourth analog signal into a third digital signal through a second signal converter, and the conversion accuracy of the first signal converter is greater than a second preset conversion accuracy threshold;

[0111] In a specific working process, the third front-end unit 14 is used to input the third digital signal into the program control module 2 .

[0112] Exemplarily, the program control module 2 further includes: a digital gain generating unit 24;

[0113] In some examples, the digital gain generation unit 24 is used to determine a second average power of the third digital signal within a preset time period, and determine a second power difference of the third digital signal based on the second average power and the second preset target power; determine a digital gain factor corresponding to the third digital signal according to the second power difference and the fifth analog gain factor; and process the fifth analog gain factor and the digital gain to obtain a compensation gain factor used for signal amplification and conditioning of the third analog signal.

[0114] In the embodiment of the present application, the RF front-end module 1 further includes: a fourth front-end unit 15;

[0115] The fourth front-end unit 15 is connected to the third front-end unit 14 and the digital gain generating unit 24 respectively;

[0116] In the specific working process, the fourth front-end unit 15 is used to determine the digital gain used for signal amplification and conditioning of the third analog signal based on the digital gain factor; determine the compensation gain used for signal amplification and conditioning of the third analog signal based on the compensation gain factor, and amplify and condition the third analog signal based on the compensation gain.

[0117] Compared with the current existing technology, this embodiment provides a signal conditioning system, which can monitor the power in real time by setting a power detection link at the position of the receiver analog end that is most prone to saturation, that is, after the low-noise amplifier. When the power of the signal meets the preset power saturation condition, it can respond in time, adjust the size of the analog gain, and perform back-off processing on the analog gain of the signal to avoid signal saturation and distortion, thereby ensuring that the receiver's signal conditioning capability will not be affected by sudden changes in signal power, ensuring that the performance of the receiver is in a stable state during the signal conditioning process, and also performing sampling, filtering, and direct isolation processing on the input signal to eliminate the jitter effect of the signal to the maximum extent. A method of a low-precision signal converter plus a precision incrementer is used for analog signal input, and the CIC filter that implements precision conversion here only performs addition and subtraction operations, which reduces the implementation complexity and can effectively reduce costs. Based on proportional, differential, and cumulative equalization control, it can quickly respond to adjustments, improve system stability, eliminate the static error of the system itself, so as to ensure the stability of the receiver system and enhance the conditioning capability of the receiver.

[0118] In order to improve the technical problem that the current existing technology cannot adjust the analog gain of the analog signal in time, thereby causing the analog signal to be distorted and affecting the receiver's signal conditioning performance. This embodiment provides a signal conditioning method, such as Figure 2 As shown, the method includes:

[0119] Step 201: Input a first analog signal to be processed into a low noise amplifier of a receiver to perform amplification and conditioning according to a first analog gain to obtain a second analog signal.

[0120] In the embodiment of the present application, a low noise amplifier (LNA) is an amplifier with a very low noise coefficient. It is generally used as a high-frequency or intermediate-frequency preamplifier of various radio receivers, and an amplification circuit of a high-sensitivity electronic detection device. When amplifying weak signals, the noise of the amplifier itself may seriously interfere with the signal, so it is hoped to reduce this noise to improve the output signal-to-noise ratio.

[0121] In some examples of this embodiment, the first analog signal is an analog signal that is obtained by converting an electromagnetic wave signal received by a receiver and needs to be amplified and conditioned.

[0122] In the embodiment of the present application, the receiver is an electromagnetic signal received by an antenna and sent to the receiver. An ideal receiver suppresses all unwanted noise, including other signals, and does not add any noise or interference to the desired signal. Regardless of the form or format of the signal, it can be transformed to suit the characteristics required by the signal processor detection circuit and then sent to the intelligent user interface.

[0123] It should be noted that the signal conditioning process can be to use internal circuits (filters, converters, amplifiers, etc.) to change the output signal, and the demodulation in the conditioning process is the process of recovering the message from the modulated signal carrying the information. In various information transmission or processing systems, the transmitter modulates the carrier with the message to be transmitted to generate a signal carrying the message. The receiver recovers the transmitted message and uses it, which is the demodulation process.

[0124] In the embodiment of the present application, amplifying and conditioning the signal may include amplifying, frequency converting, filtering and other processing processes of the signal.

[0125] Optionally, the second analog signal is an analog signal obtained by amplifying the first analog signal according to the first analog gain during the demodulation process.

[0126] In an embodiment of the present application, the first analog gain is the first analog gain used by the analog signal that was last amplified and conditioned corresponding to the first analog signal. Accordingly, if the first analog signal does not have a corresponding analog signal that was last amplified and conditioned, the first analog gain can be a pre-set analog gain.

[0127] Step 202: Perform power detection on the second analog signal.

[0128] Step 203: If the power detection result meets the preset power saturation condition, perform gain back-off processing on the first analog gain to obtain a second analog gain.

[0129] In the embodiment of the present application, the preset power saturation condition may be that there are power saturation signals greater than a preset number in the power detection result.

[0130] Optionally, signal power saturation may indicate that the gain of the signal is too large and the amplification effect on the signal exceeds a normal range. Accordingly, the gain back-off processing may be to reduce the first analog gain.

[0131] Step 204: Input the third analog signal to be processed subsequently into the low noise amplifier to be amplified and conditioned according to the second analog gain.

[0132] Compared with the current existing technology, this embodiment can monitor the power in real time by setting a power detection link at the position most prone to saturation on the analog end of the receiver, that is, after the low-noise amplifier. When the power of the signal meets the preset power saturation condition, it can respond in time, adjust the size of the analog gain, and perform back-off processing on the analog gain of the signal to avoid signal saturation and distortion, thereby ensuring that the receiver's signal conditioning capability will not be affected by sudden changes in signal power, thereby ensuring that the performance of the receiver is in a stable state during the signal conditioning process.

[0133] As a refinement and extension of the above embodiment, in order to fully illustrate the specific implementation process of the method of this embodiment, this embodiment provides the following Figure 3 The specific method shown includes:

[0134] Step 301: Obtain a first analog gain factor, and determine a first analog gain based on the first analog gain factor.

[0135] In an embodiment of the present application, the first analog gain factor is the first analog gain factor used by the analog signal that was last amplified and conditioned corresponding to the first analog signal. Correspondingly, if the first analog signal does not have a corresponding analog signal that was last amplified and conditioned, the first analog gain factor can be a pre-set analog gain factor, and the first analog gain is determined based on the first analog gain factor.

[0136] Step 302: Input the first analog signal to be processed into a low noise amplifier of the receiver to perform amplification and conditioning according to a first analog gain to obtain a second analog signal.

[0137] Optionally, after step 302, the method of this embodiment also includes: converting the second analog signal into a first digital signal through a first signal converter; determining the digital signal to be analyzed based on the first digital signal and the communication scenario information corresponding to the first digital signal; obtaining a third analog gain factor by analyzing the digital signal to be analyzed; determining a third analog gain based on the third analog gain factor; and amplifying and conditioning the second analog signal according to the third analog gain to obtain a fourth analog signal.

[0138] The conversion accuracy of the first signal converter is less than a first preset accuracy threshold.

[0139] In the embodiments of the present application, Figure 4 As shown, it is a process of determining the analog gain. Specifically, the first signal converter can be a low-precision AD converter, which can convert the analog signal into a digital signal. The cost of the low-precision AD converter is much lower than that of the high-precision AD converter, which can greatly reduce the cost.

[0140] Optionally, the first preset accuracy threshold is an accuracy threshold set according to accuracy and cost requirements.

[0141] In the embodiment of the present application, the first digital signal is a digital signal obtained after the second analog signal is converted.

[0142] Optionally, after step 302, the method of this embodiment specifically also includes: if the communication scene information is normal scene information, determining the first digital signal as the digital signal to be analyzed; if the communication scene information is stable scene information, processing the first digital signal to obtain a second digital signal, and determining the second digital signal as the digital signal to be analyzed.

[0143] In an embodiment of the present application, the communication scenario information may include: normal scenario information and stable scenario information. The normal scenario is a normal communication scenario in which it is impossible to identify whether there is interference at present; in a stable scenario, interference is sudden.

[0144] Optionally, after step 302, the method of this embodiment further includes: filtering the first digital signal through an integral-comb cascade CIC filter; and performing filtering compensation processing on the processed first digital signal to obtain a second digital signal.

[0145] Furthermore, after step 302, the method of this embodiment specifically includes: performing correction compensation filtering processing on the processed first digital signal according to the first preset condition and the second preset condition; and determining the second digital signal based on the correction compensation filtering processing result.

[0146] In some examples, after step 302, the method of this embodiment further includes: filtering the modified compensation filtering result by using an adjacent channel suppression filter to obtain a second digital signal.

[0147] In an embodiment of the present application, the digital signal to be analyzed may include a first digital signal or a second digital signal. In a normal scenario, the digital signal to be analyzed is the first digital signal, that is, the average power statistics are directly performed on the first digital signal; in a stable scenario, the first digital signal needs to be processed by a precision incrementer, a low-pass filter, a compensation filter, and an adjacent channel filter to obtain a second digital signal, that is, the average power statistics are performed on the second digital signal.

[0148] For example, Figure 5As shown in the figure, the cascaded integrator-comb filter (CIC) includes the functions corresponding to the precision incrementer and the low-pass filter. In order to overcome the problem that the low-precision AD may not be able to reach the power statistical accuracy, a first-level precision conversion module is specially added. At the same time, in order to filter out-of-band noise, the precision conversion module and the low-pass filter are unified into a CIC filter. The CIC filter is simple to implement.

[0149] In the scenario of wireless broadband communication with large bandwidth, the passband waveform of the CIC filter is severely attenuated, causing certain errors in power statistics. Therefore, the amplitude attenuation characteristics of the CIC filter are compensated, and a first-level reverse correction compensation filter is performed after the CIC filter based on the first preset condition and the second preset condition.

[0150] It should be noted that the frequency domain response of the CIC filter selected here has a frequency response similar to the sinc function. When the CIC bandwidth is large, the two are in a similar inverse form to the sinc function. The frequency response of the CIC filter at each level is H(w), which is the first preset condition, and the frequency response of the compensation filter is G(w), which is the second preset condition. The expressions between the two are shown in the following formulas 1 and 2:

[0151]

[0152] G(w)=[sinc -1 (w / 2π)] r (Formula 2)

[0153] Optionally, after step 302, the method of this embodiment further includes: analyzing a first average power of the digital signal to be analyzed within a preset time period; determining a first power difference of the digital signal to be analyzed based on the first average power and a first preset target power; and processing the first power difference to obtain the third analog gain factor.

[0154] Furthermore, after step 302, the method of this embodiment specifically includes: determining a differential component and an accumulated amount corresponding to the power difference based on the power difference; and performing weighted analysis on the power difference, the differential component and the accumulated amount to obtain a third analog gain factor.

[0155] Correspondingly, after step 302, the method of this embodiment further includes: reading a fourth analog gain factor in the RAM of the receiver.

[0156] The fourth analog gain factor is used to determine the fourth analog gain used by the analog signal that was amplified and conditioned last time and corresponds to the first analog signal.

[0157] In some examples, after step 302, the method of this embodiment further includes: performing weighted analysis on the power difference, the differential amount and the accumulated amount to obtain an increment corresponding to the third analog gain factor; and determining the third analog gain factor based on the increment and the fourth analog gain factor.

[0158] In an embodiment of the present application, statistics are taken on the average power of a preset time period, and the preset time period can be set as needed. The first average power is the average power of the digital signal to be analyzed within the preset time period; correspondingly, the first preset target power is the standard value of the pre-set average power.

[0159] In some examples, a first power difference may be obtained by subtracting the first average power from the first preset target power.

[0160] For example, the parameter err is used to represent the power difference. Based on the calculated power difference err, the difference component diff_err and the cumulative amount inte_err are calculated. The difference component is the difference between the current power difference and the previous power difference, and the cumulative amount is the accumulation of the power difference. The power difference, the difference component, and the cumulative amount each need to match a factor, which are denoted as pcoef, dcoef, and icoef respectively. These three factors act on the power difference, the difference component, and the cumulative amount, and the increment of the analog gain adjustment factor can be calculated. The specific calculation method is shown in the following formula three:

[0161] delta_again=pcoef*err+dcoef*diff_err+icoef*inte_err (Formula 3)

[0162] In formula 3, delta_again represents the increment corresponding to the third analog gain factor.

[0163] Optionally, the increment corresponding to the third analog gain factor and the analog gain factor used in the last adjustment, that is, the fourth analog gain factor used for adjusting the fourth analog signal, are added together, and the calculation result is used as the third analog gain factor.

[0164] In the embodiment of the present application, the fourth analog gain factor is read from a random access memory (RAM) in the receiver.

[0165] In the present application embodiment, RAM is an internal memory that directly exchanges data with the CPU, also called main memory (memory). It can be read and written at any time, and the speed is very fast, usually used as a temporary data storage medium for the operating system or other running programs.

[0166] Optionally, after step 302, the method of this embodiment further includes: determining a fifth analog gain factor corresponding to the second analog signal based on the second analog gain factor and the third analog gain factor; determining a fifth analog gain used for signal amplification and conditioning of the third analog signal based on the fifth analog gain factor; and storing the fifth analog gain factor in RAM.

[0167] It should be noted that the fifth analog gain factor is an analog gain factor used for subsequent amplification and conditioning of the third analog signal.

[0168] Step 303: Perform power detection on the second analog signal.

[0169] Step 304: If the power detection result meets the preset power saturation condition, perform gain backoff processing on the first analog gain to obtain a second analog gain.

[0170] Optionally, step 304 may specifically include: if a power saturation signal with a power greater than or equal to a preset power saturation threshold is detected in the second analog signal, a power saturation cumulative count is triggered; if the value of the power saturation cumulative count is greater than or equal to the preset count threshold, gain backoff processing is performed on the first analog gain factor to obtain a second analog gain factor; based on the second analog gain factor, a second analog gain is determined.

[0171] In the embodiment of the present application, when the receiver receives the signal from the transmitter, the received signal level will often vary greatly due to different business requirements, environment, distance between the two and other factors. This change is most obvious when the low noise amplifier (Low Noise Amplifier, LNA) is connected to the antenna entrance. To avoid this phenomenon, the gain of the analog RF final adjustment is allocated to the LNA at one level, and this gain can be positive or negative.

[0172] For example, Figure 6 As shown in the figure, the signal after LNA amplification is most likely to saturate. In order to avoid this consequence, a saturation power backoff is made at the LNA output. The saturation power backoff is divided into three main modules, namely the detection circuit, the saturation statistics circuit, and the power backoff circuit. The detection circuit quickly detects the saturation state. The saturation statistics module is a counting circuit. Every time a saturation trigger occurs, the count is triggered and the saturation number is transmitted to the power backoff circuit according to a certain period. The power backoff circuit backs off the power according to the saturation number. Here, the backed-off power is positively correlated with the saturation number. The real power after backoff, that is, the actual backoff analog gain factor 1, is partly given to the controllable analog gain amplification of the LNA front stage, and partly combined with the analog gain amplification factor 2 to be unified as the analog gain factor for the digital program control module.

[0173] Step 305: Input the third analog signal to be processed subsequently into the low noise amplifier to be amplified and conditioned according to the second analog gain.

[0174] Optionally, after step 305, an embodiment of the present application also includes: converting the fourth analog signal into a third digital signal through a second signal converter; determining a second average power of the third digital signal within a preset time period; determining a second power difference of the third digital signal based on the second average power and a second preset target power; determining a digital gain factor corresponding to the third digital signal according to the second power difference and a fifth analog gain factor; and determining a digital gain used for signal amplification and conditioning of the third analog signal based on the digital gain factor.

[0175] The conversion accuracy of the first signal converter is greater than a second preset conversion accuracy threshold.

[0176] Furthermore, after step 305, the embodiment of the present application further includes: processing the fifth analog gain factor and the digital gain to obtain a compensation gain factor for signal amplification and conditioning of the third analog signal.

[0177] In the embodiments of the present application, Figure 7 As shown, this can be accomplished through a digital gain generation module. Specifically, the second signal converter can convert the analog signal into a digital signal, and the second conversion accuracy threshold can be set as needed.

[0178] Optionally, the second average power is the average power of the third digital signal obtained by the second analog signal passing through the second signal converter. The second preset target power can be set as needed. The second preset target power can be the same as or different from the first preset target power, and no specific limitation is made here.

[0179] In the embodiments of the present application, Figure 8 As shown, the fifth analog gain factor is added to the digital gain factor to obtain a compensation gain factor used for signal amplification and conditioning of the third analog signal.

[0180] With the continuous development of modern communication technology, wireless communication technology is widely used in many fields, such as cellular mobile phones, global positioning system wireless LAN, such as cellular mobile phones, global positioning system wireless LAN, Bluetooth, WiFi, etc., in daily life, industrial applications and military operations, wireless communication plays a very important role. Any wireless communication system, RF front-end communication system, RF front-end is an indispensable component, the front-end receiver is an indispensable component through the antenna, the front-end receiver converts the RF signal to baseband through the antenna weak signal, low noise amplifier amplification, frequency converter down conversion, filtering and demodulation processing, etc., and sends it to the circuit for processing; the front-end transmitter modulates the signal, up-converts the signal, filters and amplifies it, and then transmits the baseband signal to the RF antenna. The signal is transmitted through modulation, up-conversion filtering and amplification, and finally the antenna transmits it.

[0181] like Fig. 9 As shown, the prior art generates an AGC command word through an AGC control device, and maps the AGC command word to an actual analog gain for analog gain control according to a preset fixed mapping relationship; the AGC control device sets the number of data N of the current digital AGC gain control object; selects a data segment with a predetermined starting point and length from the digital AGC gain control object after ADC conversion, wherein the predetermined starting point has a value range of 1 to N, and the predetermined length has a value range of 1 to N-starting point+1; obtains the signal amplitude bit width of the selected data segment, and determines the digital gain according to the signal amplitude bit width and the effective bit width of the digital gain control output; and performs digital gain control on the current AGC gain control object according to the digital gain.

[0182] The disadvantage of the above scheme is that the signal has high-order harmonics or DC systems, which will have a great impact on the AGC adjustment amount, thereby affecting the demodulation performance. The AGC adjustment is delayed after the baseband subsystem; and the analog end adjustment is based on the historical value of the previous time period. For sudden changes in power, the AGC control does not respond in time, resulting in RF signal distortion, further deteriorating the demodulation performance of the receiver. AGC adjustment is direct control, without considering the static error and volatility of the system itself, which is not conducive to systems with high stability requirements.

[0183] Compared with the current existing technology, this embodiment can monitor the power in real time by setting a power detection link at the position of the receiver analog end that is most prone to saturation, that is, after the low-noise amplifier. When the power of the signal meets the preset power saturation condition, it can respond in time, adjust the size of the analog gain, and perform back-off processing on the analog gain of the signal to avoid signal saturation and distortion, thereby ensuring that the receiver's signal conditioning capability will not be affected by the sudden change in signal power, ensuring that the performance of the receiver is in a stable state during the signal conditioning process, and also performing sampling, filtering, and direct isolation processing on the input signal to eliminate the jitter effect of the signal to the maximum extent. The method of a low-precision signal converter plus a precision incrementer is used for the analog signal input, and the CIC filter that realizes the precision conversion here only performs addition and subtraction operations, which reduces the implementation complexity and can effectively reduce the cost. Based on proportional, differential, and cumulative balance control, it can quickly respond to the adjustment, improve the system stability, eliminate the static error of the system itself, so as to ensure the stability of the receiver system and enhance the conditioning capability of the receiver.

[0184] In order to illustrate the specific implementation process of this embodiment, the following specific application examples are given: Fig.10 As shown, but not limited to:

[0185] The analog RF front-end signal is input to the digital control module, and the program controls and calculates the gain factor of the controllable analog gain method. The controllable analog gain amplifier module here is a programmable amplifier, and the externally configured amplification factor, that is, the analog gain factor indicated in the figure, controls the amplification gain of this module.

[0186] The same set of data, after being processed by ADC and digital baseband front-end modules, is input into the digital control module. There is also a processing unit for digital gain amplification inside, which calculates the digital gain control factor and outputs it to the controllable digital gain amplifier module. The principle of this module is consistent with that of the programmable amplifier, both of which linearly scale the signal power, but there are slight differences in subtle details. The variable gain amplifier module is different from the digital programmable analog amplifier, and the digital control module is a pure digital processing amplifier module.

[0187] The analog and digital gain factors are planned in a digital programmable control module, and the combined amplification factor is transmitted to the digital baseband processing module as a gain compensation factor to assist baseband demodulation.

[0188] Compared with the current existing technology, this embodiment can monitor the power in real time by setting a power detection link at the position of the receiver analog end that is most prone to saturation, that is, after the low-noise amplifier. When the power of the signal meets the preset power saturation condition, it can respond in time, adjust the size of the analog gain, and perform back-off processing on the analog gain of the signal to avoid signal saturation and distortion, thereby ensuring that the receiver's signal conditioning capability will not be affected by the sudden change in signal power, ensuring that the performance of the receiver is in a stable state during the signal conditioning process, and also performing sampling, filtering, and direct isolation processing on the input signal to eliminate the jitter effect of the signal to the maximum extent. The method of a low-precision signal converter plus a precision incrementer is used for the analog signal input, and the CIC filter that realizes the precision conversion here only performs addition and subtraction operations, which reduces the implementation complexity and can effectively reduce the cost. Based on proportional, differential, and cumulative balance control, it can quickly respond to the adjustment, improve the system stability, eliminate the static error of the system itself, so as to ensure the stability of the receiver system and enhance the conditioning capability of the receiver.

[0189] Further, as Figure 2 The specific implementation of the method shown in the embodiment provides a signal conditioning device, such as Fig.11 As shown, the device includes: a processing module 41 and a detection module 42.

[0190] The processing module 41 is configured to input the first analog signal to be processed into a low noise amplifier of the receiver to amplify and condition it according to the first analog gain to obtain a second analog signal;

[0191] A detection module 42, configured to perform power detection on the second analog signal;

[0192] The processing module 41 is also configured to perform gain back-off processing on the first analog gain to obtain a second analog gain if the power detection result meets the preset power saturation condition; and input the third analog signal to be processed subsequently into the low-noise amplifier to be amplified and conditioned according to the second analog gain.

[0193] In some examples of this embodiment, the processing module 31 is further configured to obtain a first analog gain factor, and determine the first analog gain based on the first analog gain factor. In some examples of this embodiment, the processing module 41 is specifically configured to trigger a power saturation cumulative count if a power saturation signal having a power greater than or equal to a preset power saturation threshold is detected in the second analog signal; if the value of the power saturation cumulative count is greater than or equal to the preset count threshold, perform a gain backoff process on the first analog gain factor to obtain a second analog gain factor; and determine the second analog gain based on the second analog gain factor.

[0194] In some examples of this embodiment, the processing module 41 is also configured to convert the second analog signal into a first digital signal through a first signal converter, and the conversion accuracy of the first signal converter is less than a first preset accuracy threshold; determine the digital signal to be analyzed based on the first digital signal and the communication scenario information corresponding to the first digital signal; obtain a third analog gain factor by analyzing the digital signal to be analyzed; determine a third analog gain based on the third analog gain factor; and amplify and condition the second analog signal according to the third analog gain to obtain a fourth analog signal.

[0195] In some examples of this embodiment, the processing module 41 is further configured to analyze the first average power of the digital signal to be analyzed within a preset time period; determine a first power difference of the digital signal to be analyzed based on the first average power and the first preset target power; and process the first power difference to obtain the third analog gain factor.

[0196] In some examples of this embodiment, the processing module 41 is further configured to determine the differential component and the cumulative amount corresponding to the power difference based on the power difference; perform weighted analysis on the power difference, the differential component and the cumulative amount to obtain the third analog gain factor.

[0197] In some examples of this embodiment, the processing module 41 is further configured to read a fourth analog gain factor in the random access memory RAM of the receiver, and the fourth analog gain factor is used to determine the fourth analog gain used by the analog signal that was last amplified and conditioned corresponding to the first analog signal; accordingly, the processing module 41 is further configured to perform a weighted analysis on the power difference, the differential component and the accumulated amount to obtain an increment corresponding to the third analog gain factor; and determine the third analog gain factor based on the increment and the fourth analog gain factor.

[0198] In some examples of this embodiment, the processing module 41 is specifically configured to, if the communication scene information is normal scene information, determine the first digital signal as the digital signal to be analyzed; if the communication scene information is stable scene information, process the first digital signal to obtain a second digital signal, and determine the second digital signal as the digital signal to be analyzed.

[0199] In some examples of this embodiment, the processing module 41 is further configured to filter the first digital signal through an integral-comb cascade CIC filter; and perform filtering and compensation processing on the processed first digital signal to obtain the second digital signal.

[0200] In some examples of this embodiment, the processing module 41 is further configured to perform correction compensating filtering processing on the processed first digital signal according to the first preset condition and the second preset condition; and determine the second digital signal based on the correction compensating filtering processing result.

[0201] In some examples of this embodiment, the processing module 41 is further configured to filter the modified compensation filtering result through an adjacent channel suppression filter to obtain the second digital signal.

[0202] In some examples of this embodiment, the processing module 41 is also configured to determine a fifth analog gain factor corresponding to the second analog signal based on the second analog gain factor and the third analog gain factor; determine a fifth analog gain used for signal amplification and conditioning of the third analog signal based on the fifth analog gain factor; and store the fifth analog gain factor in the RAM.

[0203] In some examples of this embodiment, the processing module 41 is also configured to convert the fourth analog signal into a third digital signal through a second signal converter, and the conversion accuracy of the first signal converter is greater than a second preset conversion accuracy threshold; determine the second average power of the third digital signal within the preset time period; determine the second power difference of the third digital signal based on the second average power and the second preset target power; determine the digital gain factor corresponding to the third digital signal according to the second power difference and the fifth analog gain factor; and determine the digital gain used for signal amplification and conditioning of the third analog signal based on the digital gain factor.

[0204] In some examples of this embodiment, the processing module 41 is further configured to process the fifth analog gain factor and the digital gain to obtain a compensation gain factor used for signal amplification and conditioning of the third analog signal.

[0205] It should be noted that for other corresponding descriptions of the functional units involved in the signal conditioning method provided in this embodiment, please refer to Figure 2 The corresponding description in will not be repeated here.

[0206] Based on the above Figure 2 and Figure 3 The method shown in the embodiment also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned Figure 2 and Figure 3 The method shown.

[0207] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute the methods of various implementation scenarios of the present application.

[0208] Based on the above Figure 1 The system shown in the embodiment of the present application also provides an electronic device, such as a smart phone, a tablet computer, a drone, an intelligent robot, a wearable smart terminal, etc., the device includes Figure 1 The system shown.

[0209] Optionally, the above-mentioned physical device may also include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a WI-FI interface), etc.

[0210] Those skilled in the art will appreciate that the above-mentioned physical device structure provided in this embodiment does not constitute a limitation on the physical device, and may include more or fewer components, or a combination of certain components, or different arrangements of components.

[0211] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages the hardware and software resources of the above-mentioned physical device, and supports the operation of the information processing program and other software and / or programs. The network communication module is used to realize the communication between the components inside the storage medium, and the communication with other hardware and software in the information processing physical device.

[0212] Based on the above Figure 2 and Figure 3 The method shown, and Fig.11 The virtual device embodiment shown in the figure, this embodiment also provides a chip, including at least one processor and a communication interface; the communication interface is used to receive a signal input to the chip or a signal output from the chip, the processor communicates with the communication interface and implements the above-mentioned as described above through a logic circuit or executing code instructions. Figure 2 and Figure 3 The method described is shown.

[0213] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform, or by hardware. By applying the solution of this embodiment, compared with the current existing technology, this embodiment can set a power detection link at the position of the receiver analog end that is most prone to saturation, that is, after the low noise amplifier, to monitor the power in real time. When the power of the signal meets the preset power saturation condition, it can respond in time, adjust the size of the analog gain, and perform back-off processing on the analog gain of the signal to avoid signal saturation and distortion, thereby ensuring that the receiver's signal conditioning capability will not be affected by the sudden change of signal power, ensuring that the performance of the receiver is in a stable state during the signal conditioning process, and also performing sampling, filtering, and direct isolation processing on the input signal to eliminate the jitter influence of the signal to the maximum extent. The method of low-precision signal converter plus precision incrementer is adopted for analog signal input, and the CIC filtering for precision conversion here only performs addition and subtraction operations, which reduces the implementation complexity and can effectively reduce the cost. Based on proportional, differential, and cumulative balance control, it can quickly respond to the adjustment, improve the system stability, eliminate the static error of the system itself, so as to ensure the stability of the receiver system and enhance the conditioning capability of the receiver.

[0214] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0215] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features applied for herein.

Claims

1. A signal conditioning system, characterized in that: include: A radio frequency front-end module and a program control module connected to the radio frequency front-end module; The RF front-end module is used to amplify and condition the first analog signal to be processed according to the first analog gain to obtain a second analog signal; The program control module is used to detect the second analog signal, and when the power detection result of the second analog signal meets the preset power saturation condition, perform fallback processing on the first analog gain to obtain a second analog gain; The second analog gain is used to instruct the RF front-end module to amplify and condition the third analog signal to be processed next time.

2. The signal conditioning system according to claim 1, characterized in that: The radio frequency front-end module comprises: a first front-end unit; The first front-end unit is used to use a low-noise amplifier to amplify and condition the first analog signal according to the first analog gain to obtain the second analog signal, wherein the first analog gain is determined based on a first analog gain factor.

3. The signal conditioning system according to claim 1, characterized in that: The program control module includes: a power detection unit and a power processing unit; The power detection unit and the power processing unit are respectively connected to the RF front-end module; The power detection unit is used to trigger the power saturation cumulative counting when detecting that there is a power saturation signal with power greater than or equal to a preset power saturation threshold in the second analog signal; The power processing unit is used to perform gain backoff processing on the first analog gain factor to obtain a second analog gain factor when it is determined that the value of the power saturation cumulative count is greater than or equal to a preset count threshold, wherein the second analog gain factor is used to determine the second analog gain.

4. The signal conditioning system according to claim 2, characterized in that: The program control module also includes: an analog gain generation unit connected to the RF front-end module; The analog gain generating unit is used to convert the second analog signal into a first digital signal using a first signal converter, and the conversion accuracy of the first signal converter is less than a first preset accuracy threshold; The analog gain generation unit is also used to determine the digital signal to be analyzed based on the first digital signal and the communication scenario information corresponding to the first digital signal; and analyze the digital signal to be analyzed to obtain a third analog gain factor, wherein the third analog gain factor is used to determine a third analog gain.

5. The signal conditioning system according to claim 4, characterized in that: The radio frequency front-end module further includes: a second front-end unit; The second front-end unit is connected to the first front-end unit and the analog gain generating unit respectively; The second front-end unit is used to amplify and condition the second analog signal according to the third analog gain to obtain a fourth analog signal.

6. The signal conditioning system according to claim 5, characterized in that: The analog gain generation unit is further used to analyze a first average power of the digital signal to be analyzed within a preset time period, and determine a first power difference of the digital signal to be analyzed based on the first average power and a first preset target power; The first power difference is processed to obtain the third analog gain factor.

7. The signal conditioning system according to claim 6, characterized in that: The analog gain generating unit is further used to determine the differential component and the accumulated amount corresponding to the power difference based on the power difference; and perform weighted analysis on the power difference, the differential component and the accumulated amount to obtain the third analog gain factor.

8. The signal conditioning system according to claim 7, characterized in that: The RF front-end module also includes: a random access memory RAM; The RAM is used to store a fourth analog gain used by the RF front-end module for the analog signal that was amplified and conditioned last time corresponding to the first analog signal; The analog gain generating unit is further used to read a fourth analog gain factor in the RAM, wherein the fourth analog gain factor is used to determine a fourth analog gain used by the analog signal that was amplified and conditioned last time and corresponds to the first analog signal.

9. The signal conditioning system according to claim 8, characterized in that: The analog gain generation unit is further used to perform weighted analysis on the power difference, the differential component and the accumulated amount to obtain an increment corresponding to the third analog gain factor; and determine the third analog gain factor based on the increment and the fourth analog gain factor.

10. The signal conditioning system according to claim 4, characterized in that: The analog gain generation unit is also used to, if it is judged that the communication scene information is normal scene information, determine the first digital signal as the digital signal to be analyzed; if it is judged that the communication scene information is stable scene information, process the first digital signal to obtain a second digital signal, and determine the second digital signal as the digital signal to be analyzed.

11. The signal conditioning system according to claim 10, characterized in that: The analog gain generation unit is further configured to filter the first digital signal by using an integrator-comb cascade CIC filter; and perform filtering compensation processing on the processed first digital signal to obtain the second digital signal.

12. The signal conditioning system according to claim 11, characterized in that: The analog gain generation unit is further configured to perform a correction compensation filtering process on the processed first digital signal according to a first preset condition and a second preset condition; and determine the second digital signal based on a correction compensation filtering process result.

13. The signal conditioning system according to claim 12, characterized in that: The analog gain generation unit is further configured to filter the modified compensation filtering result through an adjacent channel suppression filter to obtain the second digital signal.

14. The signal conditioning system according to any one of claims 4 to 13, characterized in that: The analog gain generating unit is further used to determine a fifth analog gain factor corresponding to the second analog signal based on the second analog gain factor and the third analog gain factor; The second front-end unit is further used to determine a fifth analog gain used for signal amplification and conditioning of the third analog signal according to the fifth analog gain factor; The RAM is further used to store the fifth analog gain factor.

15. The signal conditioning system according to claim 14, characterized in that: The RF front-end module also includes: a signal conversion unit and a third front-end unit; The signal conversion unit is connected to the second front-end module and the third front-end module respectively; The signal conversion unit is used to convert the fourth analog signal into a third digital signal through a second signal converter, and the conversion accuracy of the first signal converter is greater than a second preset conversion accuracy threshold; The third front-end unit is used to input the third digital signal into the program control module.

16. The signal conditioning system according to claim 15, characterized in that: The program control module also includes: a digital gain generation unit; The digital gain generating unit is used to determine the second average power of the third digital signal within the preset time period, and determine the second power difference of the third digital signal based on the second average power and the second preset target power; determine the digital gain factor corresponding to the third digital signal according to the second power difference and the fifth analog gain factor; and process the fifth analog gain factor and the digital gain to obtain a compensation gain factor used for signal amplification and conditioning of the third analog signal.

17. The signal conditioning system according to claim 16, characterized in that: The radio frequency front-end module further includes: a fourth front-end unit; The fourth front-end unit is connected to the third front-end unit and the digital gain generating unit respectively; The fourth front-end unit is used to determine the digital gain used for signal amplification and conditioning of the third analog signal based on the digital gain factor; determine the compensation gain used for signal amplification and conditioning of the third analog signal based on the compensation gain factor, and perform signal amplification and conditioning on the third analog signal based on the compensation gain.

18. A signal conditioning method, characterized in that: include: Inputting the first analog signal to be processed into a low noise amplifier of the receiver to amplify and condition it according to the first analog gain to obtain a second analog signal; Performing power detection on the second analog signal; If the power detection result meets the preset power saturation condition, performing gain backoff processing on the first analog gain to obtain a second analog gain; The third analog signal to be processed subsequently is input into the low noise amplifier to be amplified and conditioned according to the second analog gain.

19. A signal conditioning device, characterized in that: include: A processing module is configured to input the first analog signal to be processed into a low noise amplifier of the receiver to amplify and condition it according to the first analog gain to obtain a second analog signal; a detection module, configured to perform power detection on the second analog signal; The processing module is also configured to perform gain back-off processing on the first analog gain to obtain a second analog gain if the power detection result meets the preset power saturation condition; and input the third analog signal to be processed subsequently into the low-noise amplifier to be amplified and conditioned according to the second analog gain.

20. An electronic device, characterized in that: Comprising a system as claimed in any one of claims 1 to 17.

21. A chip, characterized in that: It includes at least one processor and a communication interface; the communication interface is used to receive a signal input to the chip or a signal output from the chip, and the processor communicates with the communication interface and implements the method according to claim 18 through a logic circuit or executing code instructions.

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