CN117135644A - Peak cancellation processing method, device and computer-readable storage medium - Google Patents

Abstract

The present application provides a peak cancellation processing method, device and computer-readable storage medium. The method includes: normalizing the signal input from the baseband side, and performing the polar polarization on the normalized signal from the rectangular coordinate system. The coordinate system is converted to obtain the corresponding amplitude and phase of the signal; when detecting the amplitude of the signal, if the maximum amplitude appears in the search window, the time between the starting time of the search window and the time when the maximum amplitude appears is recorded. Delay Δt; determine the moment when the impulse response sequence is output based on the length of the delay Δt, and output the impulse response sequence at this moment; wherein the impulse response sequence is: a real number form corresponding to the signal bandwidth Impulse response sequence; perform complex multiplication processing of the impulse response sequence and the amplitude exceeding the preset threshold in the polar coordinate system to obtain the offset offset amplitude; perform an inverse coordinate system on the offset offset amplitude and the phase Convert to obtain the signal in the rectangular coordinate system.

Description

Peak cancellation processing method, device and computer-readable storage medium

Technical field

The present invention relates to the technical field of mobile communications, and in particular to a peak cancellation processing method, device and computer-readable storage medium.

Background technique

With the rapid development of 5G network construction needs, the demand for radio frequency transceiver chips suitable for 5G standards and frequency bands has exploded. To this end, low-cost, finely designed radio frequency transceiver chips provide a technical solution for the construction of large-scale pico base stations, macro base stations, and home base stations. The digital front-end processing link represented by peak cancellation processing technology is one of the core technologies of RF transceiver chips; among which, peak cancellation processing technology is used for nonlinear distortion correction of power amplifiers in base stations. In the digital front-end processing link It occupies a large proportion of design and area cost.

However, the peak cancellation processing implementation solutions provided by related technologies do not consider the issue of design simplification from the aspect of algorithm optimization, which increases the complexity and chip design area of the chip design, resulting in greater design losses.

Contents of the invention

In view of this, embodiments of the present invention are expected to provide a peak cancellation processing method, device and computer-readable storage medium.

In order to achieve the above object, the technical solution of the embodiment of the present invention is implemented as follows:

Embodiments of the present invention provide a peak cancellation processing method, which method includes:

Normalize the signal input from the baseband side, and convert the normalized signal from the rectangular coordinate system to the polar coordinate system to obtain the corresponding amplitude and phase of the signal;

When detecting the amplitude of the signal, if the maximum amplitude value appears in the search window, the time delay Δt between the starting time of the search window and the time when the maximum amplitude value appears is recorded;

The moment when the impulse response sequence is output is determined based on the duration of the delay Δt, and the impulse response sequence is output at this moment; wherein the impulse response sequence is: an impulse response in the form of a real number corresponding to the signal bandwidth. sequence;

Perform complex multiplication processing in the polar coordinate system on the impulse response sequence and the amplitude exceeding the preset threshold to obtain the hedging offset amplitude;

The offset offset amplitude and the phase are transformed into an inverse coordinate system to obtain a signal in a rectangular coordinate system.

Optionally, this method also includes:

The quadrant information corresponding to the signal is obtained, which is used to obtain the signal in the rectangular coordinate system during the inverse coordinate system conversion process; wherein the quadrant information is the quadrant information before signal normalization.

Optionally, this method also includes:

Preset impulse response sequences in real form based on different signal bandwidths.

Wherein, determining the moment when the impulse response sequence is output based on the duration of the delay Δt, and outputting the impulse response sequence at this moment includes:

The countdown starts at the end of the search window, and the timing duration is the delay Δt;

At the end of the countdown, the impulse response sequence in real form corresponding to the signal bandwidth is output.

Wherein, normalizing the signal input from the baseband side includes:

The signals input in the second, third and fourth quadrants at the baseband side are converted to the first quadrant through angle transformation.

An embodiment of the present invention also provides a peak cancellation processing device, which includes:

The coordinate system conversion module is used to normalize the signal input from the baseband side, and convert the normalized signal from the rectangular coordinate system to the polar coordinate system to obtain the corresponding amplitude and phase of the signal;

The peak search module is used to detect the amplitude of the signal, and if the maximum amplitude value appears in the search window, record the time delay Δt between the starting time of the search window and the time when the maximum amplitude value appears;

A sequence generation module, configured to determine the moment when the impulse response sequence is output based on the duration of the delay Δt, and output the impulse response sequence at this moment; wherein the impulse response sequence is: corresponding to the signal bandwidth impulse response sequence in real form;

A complex multiplication module for performing complex multiplication processing in a polar coordinate system on the impulse response sequence and the amplitude exceeding a preset threshold to obtain the hedging offset amplitude;

An inverse coordinate system conversion module is used to perform inverse coordinate system conversion on the offset offset amplitude and the phase to obtain a signal in a rectangular coordinate system.

Wherein, the sequence generation module is also used to store corresponding impulse response sequences in real form preset based on different signal bandwidths.

Wherein, the peak search module is also used to send the time delay Δt to the sequence generation module at the end of the search window; accordingly,

The sequence generation module is also configured to start a countdown when receiving the time delay Δt, and the timing duration is the time delay Δt; and when the countdown ends, output an impulse response sequence in the form of a real number corresponding to the signal bandwidth.

An embodiment of the present invention also provides a peak cancellation processing device, which device includes: a processor and a memory for storing a computer program that can run on the processor,

Wherein, the processor is used to execute the steps of the above method when running the computer program.

Embodiments of the present invention also provide a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are implemented.

The peak cancellation processing method, device and computer-readable storage medium provided by the embodiments of the present invention normalize the signal input from the baseband side, and convert the normalized signal from the rectangular coordinate system to the polar coordinate system. , obtain the corresponding amplitude and phase of the signal; when detecting the amplitude of the signal, if the maximum amplitude value appears in the search window, record the time delay Δt between the starting time of the search window and the time when the maximum amplitude value appears; based on The length of the delay Δt determines the moment when the impulse response sequence is output, and the impulse response sequence is output at this moment; wherein the impulse response sequence is: an impulse response sequence in the form of a real number corresponding to the signal bandwidth. ; Perform complex multiplication processing of the impulse response sequence and the amplitude exceeding the preset threshold in the polar coordinate system to obtain the offset offset amplitude; perform inverse coordinate system conversion on the offset offset amplitude and the phase to obtain a right angle signal in the coordinate system. By extracting the signal angle quadrant (the signal is normalized to the first quadrant) and outputting the impulse response sequence in the form of real numbers, the embodiment of the present invention can realize the algorithm improvement at the coordinate system conversion level and avoid the need to convert the polar coordinate system to the right angle. Angle quadrant calculation in coordinate system conversion reduces circuit area and chip operation power consumption.

In addition, the embodiment of the present invention offsets the delay variable of the peak search module and the delay variable of the sequence generation module based on the delay Δt to form a fixed delay, thereby avoiding module design overhead in delay consistency matching and reducing The circuit area and chip operating power consumption are reduced.

Description of the drawings

Figure 1 is a schematic flow chart of the peak cancellation processing method according to the embodiment of the present invention;

Figure 2 is a schematic structural diagram of a peak cancellation processing device according to an embodiment of the present invention;

Figure 3 is a schematic structural diagram of the peak cancellation processing module according to the scenario embodiment of the present invention;

Figure 4 is a schematic diagram of signal normalization according to the scenario embodiment of the present invention;

Figure 5 is a timing distribution diagram of the signal passing through the peak search module and the sequence generation module according to the scenario embodiment of the present invention.

Detailed ways

The present invention will be described below with reference to the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the relevant invention, but not to limit the invention. It should also be noted that, for convenience of description, only the parts related to the invention are shown in the drawings. It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

In the related technology, the peak cancellation processing module uses two complete coordinate system transformations, and does not consider the problem of design simplification from the aspect of algorithm optimization; when generating the offset cancellation amplitude, the delay consistency matching of the data is not achieved, thus causing auxiliary The introduction of signals and modules increases the design complexity and chip area, constraining the low-cost realization of chips. In view of this,

An embodiment of the present invention provides a peak cancellation processing method, as shown in Figure 1. The method includes:

Step 101: Normalize the signal input from the baseband side, and convert the normalized signal from the rectangular coordinate system to the polar coordinate system to obtain the corresponding amplitude and phase of the signal;

Step 102: When detecting the amplitude of the signal, if the maximum amplitude value appears in the search window, record the time delay Δt between the starting time of the search window and the time when the maximum amplitude value appears;

Step 103: Determine the moment when the impulse response sequence is output based on the duration of the delay Δt, and output the impulse response sequence at this moment; wherein the impulse response sequence is: in the form of a real number corresponding to the signal bandwidth Impulse response sequence;

Step 104: Perform complex multiplication processing in the polar coordinate system on the impulse response sequence and the amplitude exceeding the preset threshold to obtain the hedging offset amplitude;

Step 105: Perform inverse coordinate system transformation on the offset offset amplitude and phase to obtain a signal in a rectangular coordinate system.

In this embodiment of the present invention, the method further includes:

The quadrant information corresponding to the signal is obtained, which is used to obtain the signal in the rectangular coordinate system during the inverse coordinate system conversion process; wherein the quadrant information is the quadrant information before signal normalization.

In one embodiment of the present invention, the method further includes:

Preset impulse response sequences in real form based on different signal bandwidths.

In the embodiment of the present invention, determining the moment to output the impulse response sequence based on the duration of the delay Δt, and outputting the impulse response sequence at that moment includes:

The countdown starts at the end of the search window, and the timing duration is the delay Δt;

At the end of the countdown, an impulse response sequence in real form corresponding to the signal bandwidth is output.

In the embodiment of the present invention, normalizing the signal input from the baseband side includes:

The signals input in the second, third and fourth quadrants at the baseband side are converted to the first quadrant through angle transformation.

In order to implement the above method embodiments, embodiments of the present invention also provide a peak cancellation processing device, as shown in Figure 2, the device includes:

The coordinate system conversion module 201 is used to normalize the signal input from the baseband side, and convert the normalized signal from the rectangular coordinate system to the polar coordinate system to obtain the corresponding amplitude and phase of the signal;

The peak search module 202 is used to detect the amplitude of the signal, and if the maximum amplitude value appears in the search window, record the time delay Δt between the starting time of the search window and the time when the maximum amplitude value appears;

The sequence generation module 205 is configured to determine the moment when the impulse response sequence is output based on the duration of the delay Δt, and output the impulse response sequence at this moment; wherein the impulse response sequence is: corresponding to the signal bandwidth The impulse response sequence in real form;

The complex multiplication module 203 is used to perform complex multiplication processing in the polar coordinate system on the impulse response sequence and the amplitude exceeding the preset threshold to obtain the hedging offset amplitude;

The inverse coordinate system conversion module 204 is used to perform inverse coordinate system conversion on the offset offset amplitude and the phase to obtain a signal in a rectangular coordinate system.

In the embodiment of the present invention, the coordinate system conversion module 201 is also used to obtain the quadrant information corresponding to the signal, which is used by the inverse coordinate system conversion module 204 to obtain the signal in the rectangular coordinate system during the inverse coordinate system conversion process; wherein, The above-mentioned quadrant information is the quadrant information before signal normalization.

In the embodiment of the present invention, the sequence generation module 205 is also used to store corresponding impulse response sequences in real form preset based on different signal bandwidths.

In the embodiment of the present invention,

The peak search module 202 is also configured to send the time delay Δt to the sequence generation module at the end of the search window; accordingly,

The sequence generation module is also configured to start a countdown when receiving the time delay Δt, and the timing duration is the time delay Δt; and when the countdown ends, output an impulse response sequence in the form of a real number corresponding to the signal bandwidth.

In the embodiment of the present invention, the coordinate system conversion module 201 normalizes the signal input from the baseband side, including:

The signals input in the second, third and fourth quadrants at the baseband side are converted to the first quadrant through angle transformation.

An embodiment of the present invention also provides a peak cancellation processing device, which device includes: a processor and a memory for storing a computer program that can run on the processor,

Wherein, when the processor is used to run the computer program, it executes:

Normalize the signal input from the baseband side, and convert the normalized signal from the rectangular coordinate system to the polar coordinate system to obtain the corresponding amplitude and phase of the signal;

When detecting the amplitude of the signal, if the maximum amplitude value appears in the search window, the time delay Δt between the starting time of the search window and the time when the maximum amplitude value appears is recorded;

The moment when the impulse response sequence is output is determined based on the duration of the delay Δt, and the impulse response sequence is output at this moment; wherein the impulse response sequence is: an impulse response in the form of a real number corresponding to the signal bandwidth. sequence;

Perform complex multiplication processing in the polar coordinate system on the impulse response sequence and the amplitude exceeding the preset threshold to obtain the hedging offset amplitude;

The offset offset amplitude and the phase are transformed into an inverse coordinate system to obtain a signal in a rectangular coordinate system.

The processor is also used to execute when running the computer program:

The quadrant information corresponding to the signal is obtained, which is used to obtain the signal in the rectangular coordinate system during the inverse coordinate system conversion process; wherein the quadrant information is the quadrant information before signal normalization.

The processor is also used to execute when running the computer program:

Preset corresponding impulse response sequences in real form based on different signal bandwidths.

When the time to output the impulse response sequence is determined based on the duration of the delay Δt, and when the impulse response sequence is output at this time, the processor is further configured to execute when running the computer program:

The countdown starts at the end of the search window, and the timing duration is the delay Δt;

At the end of the countdown, an impulse response sequence in real form corresponding to the signal bandwidth is output.

When normalizing the signal input from the baseband side, the processor is also used to execute: when running the computer program:

The signals input in the second, third and fourth quadrants at the baseband side are converted to the first quadrant through angle transformation.

It should be noted that when the device provided in the above embodiment performs peak cancellation processing, only the division of the above program modules is used as an example. In actual applications, the above processing can be allocated to different program modules as needed. That is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the device provided in the above embodiments and the corresponding method embodiments belong to the same concept. Please refer to the method embodiments for the specific implementation process, which will not be described again here.

In an exemplary embodiment, the embodiment of the present invention also provides a computer-readable storage medium. The computer-readable storage medium may be FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM and other memories; it can also be various devices including one or any combination of the above memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

Embodiments of the present invention also provide a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, it executes:

Normalize the signal input from the baseband side, and convert the normalized signal from the rectangular coordinate system to the polar coordinate system to obtain the corresponding amplitude and phase of the signal;

When detecting the amplitude of the signal, if the maximum amplitude value appears in the search window, the time delay Δt between the starting time of the search window and the time when the maximum amplitude value appears is recorded;

The moment when the impulse response sequence is output is determined based on the duration of the delay Δt, and the impulse response sequence is output at this moment; wherein the impulse response sequence is: an impulse response in the form of a real number corresponding to the signal bandwidth. sequence;

Perform complex multiplication processing in the polar coordinate system on the impulse response sequence and the amplitude exceeding the preset threshold to obtain the hedging offset amplitude;

The offset offset amplitude and the phase are transformed into an inverse coordinate system to obtain a signal in a rectangular coordinate system.

The computer program, when executed by the processor, also performs:

The quadrant information corresponding to the signal is obtained, which is used to obtain the signal in the rectangular coordinate system during the inverse coordinate system conversion process; wherein the quadrant information is the quadrant information before signal normalization.

The computer program, when executed by the processor, also performs:

Preset corresponding impulse response sequences in real form based on different signal bandwidths.

When the time at which the impulse response sequence is output is determined based on the duration of the delay Δt, and when the impulse response sequence is output at this time, the computer program also executes when run by the processor:

The countdown starts at the end of the search window, and the timing duration is the delay Δt;

At the end of the countdown, an impulse response sequence in real form corresponding to the signal bandwidth is output.

When the signal input from the baseband side is normalized, when the computer program is run by the processor, it also executes:

The signals input in the second, third and fourth quadrants at the baseband side are converted to the first quadrant through angle transformation.

The present invention is described below in conjunction with scenario embodiments.

Figure 3 is the internal structure and algorithm flow chart of the peak cancellation processing module in the 5G base station side radio frequency transceiver chip of this embodiment. As shown in Figure 3, the peak cancellation processing module includes: coordinate system conversion module 201 (rectangular coordinate system to polar coordinate system), peak search module 202, complex multiplication module 203, sequence generation module 205, time delay module 206, and inverse coordinate system conversion module 204 (polar coordinate system to rectangular coordinate system).

The working principle of the peak cancellation processing module is as follows:

1. The input data comes from an external module and is input to the peak cancellation processing module in the format of a Cartesian coordinate system. In order to find the amplitude signal that exceeds the threshold, it is first input to the coordinate system conversion module 201 (Cartesian coordinate system conversion module). polar coordinate system);

2. In the coordinate system conversion module 201, the signal is first normalized to the first quadrant, that is, the angle is within the range of [90°, 0°], and then the CORDIC algorithm (Coordinate Rotation Digital Computer, coordinate rotation digital calculation) is used. The signal in the Cartesian coordinate system is iteratively approximated to the corresponding amplitude and phase expression in the polar coordinate system. Since the input signal angle range of the CORDIC algorithm is [99°, -99°], the input signal is usually pre-normalized to Within the range of [90°, 0°]; therefore, the format of the output signal of the coordinate system conversion module 201 (cartesian coordinate system to polar coordinate system) is: ① amplitude, ② phase (which contains quadrant information). Among them, the quadrant normalization method is shown in Table 1, and the angle change of the signal is shown in Figure 4.

Table 1

3. The peak search module 202 will detect the input amplitude of the signal at all times. When the amplitude is greater than the system's preset threshold, the module will start a "fixed length" search window, as shown in Figure 5, and the window length is recorded as L_win. When the maximum amplitude point is found in the window, the time delay Δt between the occurrence time of the maximum point (value) and the start time of the search window is saved, and after the search window completes the full window search, the time delay Δt is sent to the sequence generation module 205. At the same time, the original signal after the peak search is divided into two signals: amplitude and accompanying phase. The amplitude signal is the amplitude signal that exceeds the threshold, and is input to the complex multiplication module 203 (in polar coordinates) synchronously with the accompanying phase signal.

4. The sequence generation module 205 is a key module to achieve delay consistency. This module needs to ensure the timing of the maximum generation time of the impulse response sequence output by the sequence generation module and the time to be processed that exceeds the threshold in the peak search module. The time delay between the moments when the maximum value of the signal occurs is fixed, as shown in Figure 5. Because in the peak search module, the time delay Δt between the maximum value occurrence moment and the start time of the search window is output at the end of the search window, and the time delay Δt is the only variable that maintains the time consistency problem. In order to eliminate this variable and convert the variable delay factor into a fixed delay factor, this embodiment can add a configurable delay module to the sequence generation module to offset this variable delay factor.

After receiving the time delay Δt output by the peak search module 202, the sequence generation module 205 relies on the configurable delay module to internally delay for a certain period of time before outputting the impulse response sequence, and the certain time of the internal delay is equal to the time delay Δt. . A certain period of this internal delay will offset the delay Δt, so that the maximum value of the signal to be processed and the maximum value of the impulse response sequence maintain a fixed delay in time, thus saving design overhead to a large extent. The final power consumption of the chip is reduced.

5. The complex multiplication (in the polar coordinate system) module 203 performs complex multiplication processing in the polar coordinate system on the impulse response sequence output by the sequence generation module 205 and the signal to be processed after passing the threshold after passing the peak search module 202.

Since this embodiment constrains the output of the sequence generation module to the impulse response sequence mode, and realizes the characteristics of the real sequence of the impulse response sequence itself through calculation, the output of the sequence generation module does not contain an imaginary part, which greatly alleviates the problem. Difficulty in implementing complex multiplication. In addition, the phase information obtained through the coordinate system conversion module will not be changed by the complex multiplication (in polar coordinate system) module, so there is no need to expand the original "phase + quadrant" format, further saving design overhead.

6. The implementation of the inverse coordinate system conversion module 204 (polar coordinate system to rectangular coordinate system) in this embodiment benefits from the phase and quadrant separation processing performed by the above-mentioned coordinate system conversion module 201 (cartesian coordinate system to polar coordinate system), and The input data of the real part sequence output of the sequence generation module 205 still retains the phase and quadrant separation modes. This module still uses the CORDIC algorithm to convert the signal in the polar coordinate system into the signal output in the rectangular coordinate system. Because the quadrant normalization processing step required by the CORDIC algorithm is avoided, the chip design and area overhead are reduced to a certain extent.

Figure 5 is a timing distribution diagram of the signal passing through the peak search module and the sequence generation module. The timing sequence of the diagram is right first, left first, and then left. As shown in Figure 5, in this embodiment, the time delay between time point B and time point E is a fixed value and has nothing to do with the relative position of time point B appearing in the search window (between time point A and time point C). .

For the peak search module:

At time point A: the signal amplitude exceeds the search threshold (preset threshold), the search window is opened; the search window width is preset in advance, and different signal bandwidths (such as home base station scenario NR+LTE=120MHz) correspond to different widths preset value;

At time point B: the amplitude reaches its maximum value; at this time, the chip cannot yet determine whether the amplitude at time point B is the final maximum value point in the search window, because the search window has not ended at this time; the chip will record A-B at this time time difference between time points;

At time point C: the search window ends; the chip determines that the amplitude at time point B is the maximum value found this time, and calculates the time difference between time point B and time point A (that is, the time difference between time points A-B recorded above ) is passed to the sequence generation module.

For the sequence generation module:

At time point C: The sequence generation module starts counting down after receiving the "time difference between time points A-B" from the "peak search module" at time point C. The initial counting value is the "time difference between time points A-B";

At time point D: the timing ends and the offset sequence (impulse response sequence) is sequentially output to the outside. The offset sequence is preset in advance. Different signal bandwidths (such as home base station scenario NR+LTE=120MHz) correspond to different offset sequence presets. value; this preset value is an impulse response sequence generated by an FIR filter, with timing symmetry, and the maximum value is in the center.

At time point E: At this time, the cancellation sequence outputs its central maximum value. At this point, let’s look at the time difference between time points B-E:

B_E time difference=B_C+C_D+D_E;

C_D=A_B;

A_B+B_C=search window width (fixed value);

D_E=half of the impulse response sequence (fixed value);

Therefore, B_E time difference = search window width (fixed value) + half of the impulse response sequence (fixed value), which is a fixed value.

It can be seen that the embodiment of the present invention can achieve algorithm improvement at the coordinate system conversion level through a low-cost implementation method for peak cancellation processing of the radio frequency transceiver chip on the 5G base station side. By extracting the signal angle quadrant, it avoids the polar coordinate system to Angular quadrant calculation in rectangular coordinate system conversion reduces circuit area and chip operation power consumption.

In addition, the delay variable of the peak search module in the embodiment of the present invention can be offset by the delay variable of the sequence generation module to form a fixed delay (group delay), thus avoiding the module design overhead in delay consistency matching. The circuit area and chip operation power consumption are reduced.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the scope of the present invention.

Claims (10)

1. A peak cancellation processing method, characterized in that the method includes: Normalize the signal input from the baseband side, and convert the normalized signal from the rectangular coordinate system to the polar coordinate system to obtain the corresponding amplitude and phase of the signal; When detecting the amplitude of the signal, if the maximum amplitude value appears in the search window, the time delay Δt between the starting time of the search window and the time when the maximum amplitude value appears is recorded; The moment when the impulse response sequence is output is determined based on the duration of the delay Δt, and the impulse response sequence is output at this moment; wherein the impulse response sequence is: an impulse response in the form of a real number corresponding to the signal bandwidth. sequence; Perform complex multiplication processing in the polar coordinate system on the impulse response sequence and the amplitude exceeding the preset threshold to obtain the hedging offset amplitude; The offset offset amplitude and the phase are transformed into an inverse coordinate system to obtain a signal in a rectangular coordinate system. 2. The method of claim 1, further comprising: The quadrant information corresponding to the signal is obtained, which is used to obtain the signal in the rectangular coordinate system during the inverse coordinate system conversion process; wherein the quadrant information is the quadrant information before signal normalization. 3. The method of claim 1, further comprising: Preset impulse response sequences in real form based on different signal bandwidths. 4. The method according to claim 1, wherein determining the moment of outputting the impulse response sequence based on the duration of the delay Δt, and outputting the impulse response sequence at this moment includes: The countdown starts at the end of the search window, and the timing duration is the delay Δt; At the end of the countdown, the impulse response sequence in real form corresponding to the signal bandwidth is output. 5. The method according to claim 1, characterized in that normalizing the signal input from the baseband side includes: The signals input in the second, third and fourth quadrants at the baseband side are converted to the first quadrant through angle transformation. 6. A peak cancellation processing device, characterized in that the device includes: The coordinate system conversion module is used to normalize the signal input from the baseband side, and convert the normalized signal from the rectangular coordinate system to the polar coordinate system to obtain the corresponding amplitude and phase of the signal; The peak search module is used to detect the amplitude of the signal, and if the maximum amplitude value appears in the search window, record the time delay Δt between the starting time of the search window and the time when the maximum amplitude value appears; A sequence generation module, configured to determine the moment when the impulse response sequence is output based on the duration of the delay Δt, and output the impulse response sequence at this moment; wherein the impulse response sequence is: corresponding to the signal bandwidth impulse response sequence in real form; A complex multiplication module for performing complex multiplication processing in a polar coordinate system on the impulse response sequence and the amplitude exceeding a preset threshold to obtain the hedging offset amplitude; An inverse coordinate system conversion module is used to perform inverse coordinate system conversion on the offset offset amplitude and the phase to obtain a signal in a rectangular coordinate system. 7. The device according to claim 6, wherein the sequence generation module is further configured to store corresponding impulse response sequences in real form preset based on different signal bandwidths. 8. The device according to claim 6, characterized in that, The peak search module is also configured to send the time delay Δt to the sequence generation module at the end of the search window; accordingly, The sequence generation module is also configured to start a countdown when receiving the time delay Δt, and the timing duration is the time delay Δt; and when the countdown ends, output an impulse response sequence in the form of a real number corresponding to the signal bandwidth. 9. A peak cancellation processing device, characterized in that the device includes: a processor and a memory for storing a computer program capable of running on the processor, Wherein, the processor is used to execute the steps of the method according to any one of claims 1-5 when running the computer program. 10. A computer-readable storage medium with a computer program stored thereon, characterized in that when the computer program is executed by a processor, the steps of the method according to any one of claims 1-5 are implemented.