Signal Amplitude Pre-Compensation Method, Apparatus and Wi-Fi Transmitter

Abstract

The present application provides a signal amplitude pre-compensation method, apparatus and Wi-Fi transmitter. The method is applied to the Wi-Fi transmitter and includes: obtaining a Wi-Fi signal to be transmitted; performing amplitude pre-compensation on the Wi-Fi signal to be transmitted based on an amplitude pre-compensation table within a plurality of preset time periods; wherein the amplitude pre-compensation table represents the corresponding relationship between the plurality of preset time periods and amplitude pre-compensation values. This signal amplitude pre-compensation method addresses the amplitude drift characteristic of the transmitter caused by the PA stabilization time. By adopting the method of digital amplitude pre-compensation for Wi-Fi signals, it has a simple, flexible and strong adaptability structure, and has good compensation performance, which can effectively improve the transmission quality of the Wi-Fi transmitter.

Description

Technical Field

[0001] This application relates to the field of network communication. Specifically, it relates to a signal amplitude pre-compensation method, device, Wi-Fi transmitter, electronic device, and computer-readable storage medium. Background Art

[0002] In order to improve the performance of the dynamic error vector magnitude (EVM) of a Wi-Fi transmitter, current methods mainly involve performing some circuit optimizations in the design of radio frequency devices to minimize the time it takes for the PA to reach a stable operating point from startup, reducing the impact on DEVM, or using a method of delaying the signal. After waiting for the PA to reach the stable operating point, the signal is then input to the PA, which is equivalent to turning on the PA in advance. However, the first method requires re-designing the radio frequency device, which is costly and cannot completely control the impact of the PA stabilization time at a low level. The second method delays the signal, and in a Wi-Fi system, there are requirements for the delay. If the delay is too long, the system will not be able to meet the short interframe space (SIFS). Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a signal amplitude pre-compensation method, device, Wi-Fi transmitter, electronic device, and computer-readable storage medium. Aiming at the amplitude drift characteristic of the transmitter caused by the PA stabilization time, a digital amplitude pre-compensation method for Wi-Fi signals is adopted, which has a simple, flexible, and strong adaptability structure, and has good compensation performance, and can effectively improve the transmission quality of the Wi-Fi transmitter.

[0004] In a first aspect, this application provides a signal amplitude pre-compensation method, which is applied to a Wi-Fi transmitter and includes: obtaining a Wi-Fi signal to be transmitted; performing amplitude pre-compensation on the Wi-Fi signal to be transmitted based on an amplitude pre-compensation table within a plurality of preset time periods; where the amplitude pre-compensation table represents the corresponding relationship between the plurality of preset time periods and the amplitude pre-compensation values.

[0005] In the above implementation process, in order to reduce the amplitude drift generated by the PA, an amplitude pre-compensation table is configured in the Wi-Fi transmitter. The amplitude pre-compensation table is determined according to the amplitude drift characteristic corresponding to the power amplifier in the Wi-Fi transmitter. The amplitude pre-compensation table represents the corresponding relationship between a plurality of preset time periods and the amplitude pre-compensation values. Within a plurality of preset time periods, amplitude pre-compensation in terms of time is performed on the Wi-Fi signal based on the amplitude pre-compensation table, and the compensated Wi-Fi signal is input into the PA to offset the amplitude drift generated during the stabilization process of the PA, effectively improving the transmission quality of the Wi-Fi transmitter.

[0006] In an alternative embodiment, before obtaining the Wi-Fi signal to be transmitted, the method further includes: determining a power response curve over time according to a calibration signal and a feedback signal; wherein, the calibration signal is a single-tone signal, the feedback signal is an output signal obtained after the calibration signal is input into a power amplifier, and the power response curve over time is used to characterize the amplitude drift characteristic of the power amplifier; generating the amplitude pre-compensation table according to the power response curve over time.

[0007] In an alternative embodiment, the determining a power response curve over time according to a calibration signal and a feedback signal includes: correlating the calibration signal and the feedback signal in each preset time period to obtain a corresponding correlation value in each preset time period; wherein, the corresponding correlation value in each preset time period is the power of the single-tone signal in the preset time period; fitting the corresponding correlation values in each preset time period and the preset time periods to determine the power response curve over time.

[0008] In an alternative embodiment, the fitting the corresponding correlation values in each preset time period and the preset time periods to determine the power response curve over time includes: fitting the corresponding correlation values in each preset time period and the preset time periods by using a multi-order polynomial to obtain the power response curve over time.

[0009] In an alternative embodiment, the amplitude pre-compensation of the Wi-Fi signal to be transmitted based on the amplitude pre-compensation table in a plurality of preset time periods includes: for each preset time period, determining an amplitude pre-compensation value corresponding to the preset time period according to the amplitude pre-compensation table; multiplying the Wi-Fi signal in the preset time period by the amplitude pre-compensation value corresponding to the preset time period to obtain the amplitude pre-compensated Wi-Fi signal in the preset time period.

[0010] In a second aspect, the present application provides a signal amplitude pre-compensation device configured in a Wi-Fi transmitter, including: an acquisition module for acquiring a Wi-Fi signal to be transmitted; a compensation module for performing amplitude pre-compensation on the Wi-Fi signal to be transmitted based on an amplitude pre-compensation table in a plurality of preset time periods; wherein, the amplitude pre-compensation table represents the corresponding relationship between the plurality of preset time periods and the amplitude pre-compensation values.

[0011] In an alternative embodiment, the apparatus further comprises: a determination module, configured to determine a power response curve over time according to a calibration signal and a feedback signal; wherein the calibration signal is a single-tone signal, the feedback signal is an output signal obtained after the calibration signal is input into a power amplifier, and the power response curve over time is used to characterize the amplitude drift characteristic of the power amplifier; a generation module, configured to generate the amplitude pre-compensation table according to the power response curve over time.

[0012] In an alternative embodiment, the determination module is specifically configured to correlate the calibration signal and the feedback signal within each preset time period to obtain a corresponding correlation value within each preset time period; wherein the corresponding correlation value within each preset time period is the power of the single-tone signal within that preset time period; and to fit and determine the power response curve over time according to the corresponding correlation values within each preset time period and each preset time period.

[0013] In an alternative embodiment, the determination module is specifically configured to fit the corresponding correlation values within each preset time period and each preset time period by using a multi-order polynomial to obtain the power response curve over time.

[0014] In an alternative embodiment, the compensation module is specifically configured to, for each preset time period, determine an amplitude pre-compensation value corresponding to the preset time period according to the amplitude pre-compensation table; and multiply the Wi-Fi signal within the preset time period by the amplitude pre-compensation value corresponding to the preset time period to obtain the amplitude pre-compensated Wi-Fi signal within the preset time period.

[0015] In a third aspect, the present application provides a Wi-Fi transmitter, comprising: an amplitude pre-compensation module, configured to obtain a Wi-Fi signal to be transmitted; and perform amplitude pre-compensation on the Wi-Fi signal to be transmitted based on an amplitude pre-compensation table within a plurality of preset time periods; wherein the amplitude pre-compensation table represents the corresponding relationship between the plurality of preset time periods and amplitude pre-compensation values; a power amplifier, configured to perform power amplification processing on the amplitude pre-compensated Wi-Fi signal to obtain a transmitted signal.

[0016] In an alternative embodiment, the power amplifier is further configured to perform power amplification processing on the calibration signal to obtain a feedback signal; the Wi-Fi transmitter further comprises: a correlator, configured to correlate the calibration signal and the feedback signal within each preset time period to determine the corresponding correlation value within each preset time period; a controller, configured to fit and determine the power response curve over time according to the corresponding correlation values within each preset time period and each preset time period; and generate the amplitude pre-compensation table according to the power response curve over time.

[0017] Fourthly, the present application provides an electronic device, which includes a Wi-Fi transmitter as described in the foregoing embodiments.

[0018] Fifthly, the present application provides a computer-readable storage medium, on which computer program instructions are stored. When the computer program instructions are read and run by a computer, the method described in any one of the foregoing embodiments is executed. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required to be used in the embodiments of the present application. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a flowchart of a signal amplitude pre-compensation method provided by an embodiment of the present application;

[0021] Figure 2 It is a signal-related schematic diagram provided by an embodiment of the present application;

[0022] Figure 3 It is a response curve of power versus time provided by an embodiment of the present application;

[0023] Figure 4 It is a signal amplitude pre-compensation schematic diagram provided by an embodiment of the present application;

[0024] Figure 5 It is a schematic diagram of the transmitter EVM affected by amplitude drift provided by an embodiment of the present application;

[0025] Figure 6 It is a schematic diagram of the transmitter EVM after signal amplitude pre-compensation provided by an embodiment of the present application;

[0026] Figure 7 It is a structural block diagram of a Wi-Fi transmitter provided by an embodiment of the present application;

[0027] Figure 8 It is a structural block diagram of a signal amplitude pre-compensation device provided by an embodiment of the present application. Detailed Embodiments

[0028] The following will describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application.

[0029] The purpose of the embodiments of the present application is to provide a signal amplitude pre-compensation method, device, Wi-Fi transmitter, electronic device, and computer-readable storage medium. Aiming at the amplitude drift characteristic of the transmitter caused by the PA stabilization time, a digital amplitude pre-compensation method for Wi-Fi signals is adopted, which has a simple structure, is flexible, has strong adaptability, and has good compensation performance, and can effectively improve the transmission quality of the Wi-Fi transmitter.

[0030] This technology can be implemented in corresponding software, hardware, and a combination of software and hardware. The embodiments of the present application are introduced in detail below.

[0031] Please refer to Figure 1 , Figure 1 , which is a flowchart of a signal amplitude pre-compensation method provided by the embodiments of the present application. This signal amplitude pre-compensation method can be applied to a Wi-Fi transmitter, and this signal amplitude pre-compensation method may include the following content:

[0032] Step 101: Obtain the Wi-Fi signal to be sent.

[0033] Step 102: Based on the amplitude pre-compensation table, perform amplitude pre-compensation on the Wi-Fi signal within multiple preset time periods.

[0034] In a Wi-Fi transmitter, the time-division duplex mode is generally adopted in Wi-Fi communication. When the Wi-Fi transmitter sends a Wi-Fi signal, the device needs to switch from RX (Receive) to TX (Transport). During the switching process, the power amplifier (PA) is turned on. It takes a certain amount of time for the PA to reach the stable operating point from being turned on. At this time, the signal has already entered the PA. During the stabilization process of the PA, it will affect the amplitude of the signal, which is manifested as the amplitude of the signal gradually rising until it is stable in time, that is, the amplitude drift characteristic. Although the amplitude drift is very small, it will also affect the transmission quality of the Wi-Fi transmitter and the performance of the dynamic error vector magnitude (EVM).

[0035] In order to reduce the amplitude drift generated by the PA, an amplitude pre-compensation table is configured in the Wi-Fi transmitter. The amplitude pre-compensation table is determined according to the amplitude drift characteristic corresponding to the power amplifier in the Wi-Fi transmitter. The amplitude pre-compensation table represents the corresponding relationship between multiple preset time periods and amplitude pre-compensation values. Within multiple preset time periods, perform amplitude pre-compensation on the Wi-Fi signal in terms of time, and input the compensated Wi-Fi signal into the PA to offset the amplitude drift generated during the stabilization process of the PA, effectively improving the transmission quality of the Wi-Fi transmitter.

[0036] The generation process of the amplitude pre-compensation table is introduced below.

[0037] As an alternative implementation, the signal amplitude pre-compensation method provided by the embodiments of the present application may further include the following:

[0038] A1: Determine the response curve of power to time based on the calibration signal and the feedback signal.

[0039] A2: Generate the amplitude pre-compensation table according to the response curve of power to time.

[0040] In the embodiments of the present application, the calibration signal is a single-tone signal, the feedback signal is the output signal obtained after the calibration signal is input to the power amplifier, and the response curve of power to time is used to characterize the amplitude drift characteristic of the power amplifier.

[0041] When the Wi-Fi transmitter is powered on and initialized, initialize self-calibration. Configure the digital side and transmit a single-tone signal (i.e., the calibration signal). When transmitting the single-tone signal, synchronously turn on the power amplifier PA. After obtaining the feedback signal output by the power amplifier, determine the response curve of power to time based on the calibration signal and the feedback signal, and generate the amplitude pre-compensation table according to the response curve of power to time.

[0042] Further, the above step A1 may include the following:

[0043] B1: Correlate the calibration signal and the feedback signal within each preset time period to obtain the corresponding correlation values within each preset time period.

[0044] B2: Fit and determine the response curve of power to time according to the corresponding correlation values within each preset time period and each preset time period.

[0045] In the above step B1, as Figure 2 shown, after obtaining the calibration signal and the feedback signal, cut off the loop delay ( Figure 2 Delay in Figure 2 ), and perform segmented correlation according to the preset time length ( Len in

[0046]

[0047] In the above step B2, as Figure 3As shown, after determining the corresponding correlation values within each preset time period, calculate the average power within each preset time period. Use the average power as the ordinate and select a time point (e.g., the middle moment of the preset time period) within the preset time period corresponding to the average power as the abscissa, and multiple data points (i.e., Figure 3 the multiple points in

[0048] Further, as an alternative implementation, step B2 above may include the following:

[0049] Use a multi-order polynomial to fit the corresponding correlation values within each preset time period and each preset time period to obtain the response curve of power versus time.

[0050] Due to various interferences, there is a certain fluctuation between the determined multiple data points. In order to more accurately restore the curve of power changing with time, use a multi-order polynomial to fit the determined multiple data points to obtain the response curve of power versus time (i.e., Figure 3 the curve in

[0051] It should be noted that the order of the multi-order polynomial in the embodiments of the present application is not specifically limited. For example, a 5th-order, 6th-order, or 7th-order polynomial can be used to fit the determined multiple data points to obtain the response curve of power versus time.

[0052] In step A2 above, after determining the response curve of power versus time, during the stabilization process of PA, it will affect the amplitude of the signal. Temporally, it is manifested as the amplitude of the signal gradually rising until it stabilizes, and on the response curve of power versus time, it is manifested as the power of the signal gradually rising until it stabilizes.

[0053] Interpolate the response curve of power versus time to obtain the smoothed power value for each preset time period. The power value that reaches stability on the response curve of power versus time (e.g., Figure 3 -0.03 dB in

[0054] is the compensation target, that is, after compensating the Wi-Fi signal in each preset time period, the power value of the compensated Wi-Fi signal is equal to the power value that reaches stability on the response curve of power versus time. According to the above compensation target and the smoothed power value for each preset time period, determine the amplitude pre-compensation value for each preset time period, and save the amplitude pre-compensation value for each preset time period and the corresponding preset time period to generate an amplitude pre-compensation table.

[0055] For each preset time period, determine the amplitude pre-compensation value corresponding to the preset time period according to the amplitude pre-compensation table;

[0056] Multiply the Wi-Fi signal within the preset time period by the amplitude pre-compensation value corresponding to the preset time period to obtain the Wi-Fi signal with amplitude pre-compensation within the preset time period.

[0057] In the embodiments of the present application, as Figure 4 shown, starting from the starting position of the Wi-Fi signal, according to the preset time period, read the amplitude pre-compensation value corresponding to the preset time period from the amplitude pre-compensation table, multiply the Wi-Fi signal within the preset time period by the amplitude pre-compensation value corresponding to the preset time period to obtain the Wi-Fi signal with amplitude pre-compensation within the preset time period. Then enter the next preset time period, read the next amplitude pre-compensation value, and repeat the above steps until the Wi-Fi signals within all preset time periods are amplitude pre-compensated.

[0058] It should be noted that the multiple preset time periods for amplitude pre-compensation of the Wi-Fi signal to be sent are the same as the multiple preset time periods for determining the amplitude pre-compensation table. The time length of each preset time period can be: 4us, 5us, 8us, etc. The number of preset time periods is determined by the length of time from when the PA in the Wi-Fi transmitter is turned on to when it stabilizes. The longer the time from when the PA is turned on to when it stabilizes, the more the number of preset time periods.

[0059] Furthermore, considering that the amplitude drift characteristics of the PA may change due to reasons such as temperature, channel, and aging, during the service gap of the Wi-Fi transmitter, periodically execute the above steps A1 - A2 to update the amplitude pre-compensation table to ensure the transmission quality of the Wi-Fi transmitter.

[0060] Furthermore, conduct actual environment tests on the radio frequency devices, and the test results are as Figure 5 and Figure 6 . Figure 5 is the EVM of the Wi-Fi transmitter when the signal amplitude pre-compensation method provided by the embodiments of the present application is not used for signal transmission. The vertical axis is the EVM, and the horizontal axis is the number of data symbols sent. Due to the amplitude drift characteristics generated from when the PA is turned on to when it stabilizes, which affect the signal EVM index, it can be seen that the EVM shows a trend of rapidly deteriorating to stabilizing, and the overall EVM stabilizes at -37.5dB. Figure 6 is the EVM of the Wi-Fi transmitter after amplitude pre-compensation using the signal amplitude pre-compensation method provided by the embodiments of the present application. After amplitude pre-compensation, the EVM of the transmitted signal is basically stable and is improved to about -44.5dB. Thus, it can be seen that using the signal amplitude pre-compensation method provided by the embodiments of the present application can effectively improve the transmission quality of the Wi-Fi transmitter.

[0061] Based on the same inventive concept, an embodiment of the present application further provides a Wi-Fi transmitter. Please refer to Figure 7 , Figure 7 which is a structural block diagram of a Wi-Fi transmitter provided in an embodiment of the present application. The Wi-Fi transmitter 700 may include:

[0062] An amplitude pre-compensation module 701, configured to obtain a Wi-Fi signal to be transmitted; and perform amplitude pre-compensation on the Wi-Fi signal to be transmitted based on an amplitude pre-compensation table within a plurality of preset time periods, where the amplitude pre-compensation table represents the corresponding relationship between the plurality of preset time periods and amplitude pre-compensation values;

[0063] A power amplifier 702, configured to perform power amplification processing on the amplitude pre-compensated Wi-Fi signal to obtain a transmitted signal.

[0064] In an alternative embodiment, the power amplifier 702 is further configured to perform power amplification processing on a calibration signal to obtain a feedback signal;

[0065] The signal amplitude pre-compensation system further includes:

[0066] A correlator 703, configured to correlate the calibration signal and the feedback signal within each preset time period to determine the corresponding correlation value within each preset time period;

[0067] A controller 704, configured to fit and determine a response curve of power versus time according to the corresponding correlation values within each preset time period; and generate the amplitude pre-compensation table according to the response curve of power versus time.

[0068] The Wi-Fi transmitter 700 corresponds to the foregoing signal amplitude pre-compensation method, and each functional module corresponds to each step of the foregoing signal amplitude pre-compensation method. Therefore, the implementation manners of each functional module refer to the implementation manners of the signal amplitude pre-compensation method in the foregoing embodiments, and will not be repeated here.

[0069] Based on the same inventive concept, an embodiment of the present application further provides a signal amplitude pre-compensation device. Please refer to Figure 8 , Figure 8 which is a structural block diagram of a signal amplitude pre-compensation device provided in an embodiment of the present application. The signal amplitude pre-compensation device is configured in a Wi-Fi transmitter. The signal amplitude pre-compensation device 800 may include:

[0070] An acquisition module 801, configured to obtain a Wi-Fi signal to be transmitted;

[0071] A compensation module 802 is configured to perform amplitude pre-compensation on the Wi-Fi signal to be transmitted based on an amplitude pre-compensation table within multiple preset time periods; wherein, the amplitude pre-compensation table represents the corresponding relationship between the multiple preset time periods and amplitude pre-compensation values.

[0072] In an alternative embodiment, the apparatus further includes:

[0073] A determination module 803 is configured to determine a power-versus-time response curve according to a calibration signal and a feedback signal; wherein, the calibration signal is a single-tone signal, the feedback signal is an output signal obtained after the calibration signal is input into a power amplifier, and the power-versus-time response curve is used to characterize the amplitude drift characteristic of the power amplifier;

[0074] A generation module 804 is configured to generate the amplitude pre-compensation table according to the power-versus-time response curve.

[0075] In an alternative embodiment, the determination module 803 is specifically configured to perform correlation on the calibration signal and the feedback signal within each preset time period to obtain a corresponding correlation value within each preset time period; wherein, the corresponding correlation value within each preset time period is the power of the single-tone signal within this preset time period; and determine the power-versus-time response curve according to the corresponding correlation values within the respective preset time periods and the respective preset time periods by fitting.

[0076] In an alternative embodiment, the determination module 803 is specifically configured to fit the corresponding correlation values within the respective preset time periods and the respective preset time periods by using a multi-order polynomial to obtain the power-versus-time response curve.

[0077] In an alternative embodiment, the compensation module 802 is specifically configured to, for each preset time period, determine the amplitude pre-compensation value corresponding to this preset time period according to the amplitude pre-compensation table; multiply the Wi-Fi signal within this preset time period by the amplitude pre-compensation value corresponding to this preset time period to obtain the amplitude pre-compensated Wi-Fi signal within this preset time period.

[0078] Based on the same inventive concept, an embodiment of the present application further provides an electronic device, and the electronic device includes the foregoing Wi-Fi transmitter. The electronic device may be, but is not limited to, physical devices such as a desktop computer, a laptop computer, a smart phone, a smart wearable device, a vehicle-mounted device, etc.

[0079] In addition, an embodiment of the present application further provides a computer-readable storage medium, and a computer program is stored on the computer storage medium. When the computer program is run by a computer, it executes the steps of the signal amplitude pre-compensation method in the above embodiment.

[0080] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For another example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some communication interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical or other forms.

[0081] In addition, the units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0082] Furthermore, in each embodiment of the present application, the various functional modules can be integrated together to form an independent part, or each module can exist alone, or two or more modules can be integrated to form an independent part.

[0083] It should be noted that if the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks, or optical discs that can store program codes.

[0084] 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.

[0085] The above are only embodiments of the present application and are not intended to limit the protection scope of the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A signal amplitude pre - compensation method, characterized in that, applied to a Wi - Fi transmitter, includes: Obtain the Wi - Fi signal to be transmitted; During multiple preset time periods, perform amplitude pre - compensation on the Wi - Fi signal to be transmitted based on an amplitude pre - compensation table, including: for each preset time period, determine the amplitude pre - compensation value corresponding to this preset time period according to the amplitude pre - compensation table; multiply the Wi - Fi signal within this preset time period by the amplitude pre - compensation value corresponding to this preset time period to obtain the amplitude - pre - compensated Wi - Fi signal within this preset time period; wherein, the amplitude pre - compensation table represents the correspondence between the multiple preset time periods and the amplitude pre - compensation values, and the number of the preset time periods is determined by the length of time from when the power amplifier in the Wi - Fi transmitter is turned on to when it stabilizes; Before the step of obtaining the Wi - Fi signal to be transmitted, the method further includes: Determine the power - to - time response curve according to a calibration signal and a feedback signal; wherein, the calibration signal is a single - tone signal, the feedback signal is the output signal obtained after the calibration signal is input into the power amplifier, and the power - to - time response curve is used to characterize the amplitude drift characteristic of the power amplifier; Generate the amplitude pre - compensation table according to the power - to - time response curve.

2. The signal amplitude pre - compensation method according to claim 1, characterized in that, The step of determining the power - to - time response curve according to the calibration signal and the feedback signal includes: Perform correlation on the calibration signal and the feedback signal within each preset time period to obtain the corresponding correlation value within each preset time period; wherein, the corresponding correlation value within each preset time period is the power of the single - tone signal within this preset time period; Fit and determine the power - to - time response curve according to the corresponding correlation values within each preset time period and each preset time period.

3. The signal amplitude pre - compensation method according to claim 2, characterized in that, The step of fitting and determining the power - to - time response curve according to the corresponding correlation values within each preset time period and each preset time period includes: Use a multi - order polynomial to fit the corresponding correlation values within each preset time period and each preset time period to obtain the power - to - time response curve.

4. A signal amplitude pre - compensation device, characterized in that, configured in a Wi - Fi transmitter, includes: An acquisition module, used to acquire the Wi - Fi signal to be transmitted; A compensation module, which is used to perform amplitude pre-compensation on the Wi-Fi signal to be transmitted based on an amplitude pre-compensation table within multiple preset time periods, includes: for each preset time period, determining the amplitude pre-compensation value corresponding to this preset time period according to the amplitude pre-compensation table; multiplying the Wi-Fi signal within this preset time period by the amplitude pre-compensation value corresponding to this preset time period to obtain the Wi-Fi signal with amplitude pre-compensation within this preset time period; wherein, the amplitude pre-compensation table represents the corresponding relationship between the multiple preset time periods and the amplitude pre-compensation values, and the number of the preset time periods is determined by the length of time from when the power amplifier in the Wi-Fi transmitter is turned on to when it becomes stable; A determination module, which is used to determine the power-time response curve according to a calibration signal and a feedback signal; wherein, the calibration signal is a single-tone signal, the feedback signal is the output signal obtained after the calibration signal is input into the power amplifier, and the power-time response curve is used to characterize the amplitude drift characteristic of the power amplifier; A generation module, which is used to generate the amplitude pre-compensation table according to the power-time response curve.

5. A Wi-Fi transmitter, characterized in that, it includes: An amplitude pre-compensation module, which is used to obtain the Wi-Fi signal to be transmitted; perform amplitude pre-compensation on the Wi-Fi signal to be transmitted based on an amplitude pre-compensation table within multiple preset time periods, includes: for each preset time period, determining the amplitude pre-compensation value corresponding to this preset time period according to the amplitude pre-compensation table; multiplying the Wi-Fi signal within this preset time period by the amplitude pre-compensation value corresponding to this preset time period to obtain the Wi-Fi signal with amplitude pre-compensation within this preset time period; wherein, the amplitude pre-compensation table represents the corresponding relationship between the multiple preset time periods and the amplitude pre-compensation values, and the number of the preset time periods is determined by the length of time from when the power amplifier in the Wi-Fi transmitter is turned on to when it becomes stable; A power amplifier, which is used to perform power amplification processing on the Wi-Fi signal with amplitude pre-compensation to obtain a transmitted signal; A controller, which is used to determine the power-time response curve according to a calibration signal and a feedback signal, and generate the amplitude pre-compensation table according to the power-time response curve; wherein, the calibration signal is a single-tone signal, the feedback signal is the output signal obtained after the calibration signal is input into the power amplifier, and the power-time response curve is used to characterize the amplitude drift characteristic of the power amplifier.

6. The Wi-Fi transmitter according to claim 5, characterized in that, the power amplifier is further used to perform power amplification processing on the calibration signal to obtain a feedback signal; the Wi-Fi transmitter further includes: A correlator, which is used to perform correlation on the calibration signal and the feedback signal within each preset time period to determine the corresponding correlation value within each preset time period; the controller is specifically used to fit and determine the power-time response curve according to the corresponding correlation values within each preset time period and each preset time period; generate the amplitude pre-compensation table according to the power-time response curve.

7. An electronic device, Characterized in that, The electronic device includes: a Wi-Fi transmitter as described in claim 5 or 6.

8. A computer-readable storage medium, Characterized in that, Computer program instructions are stored on the computer-readable storage medium, and when the computer program instructions are read and run by the computer, the method described in any one of claims 1-3 is executed.

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