CN113055032A

CN113055032A - Method and device for acquiring compensation values of IQ mismatch and carrier leakage and computer equipment

Info

Publication number: CN113055032A
Application number: CN201911380481.2A
Authority: CN
Inventors: 樊凯; 潘攀; 鲁宏涛; 杨晓雷; 吕本强; 崔朋旭
Original assignee: Allwinner Technology Co Ltd
Current assignee: Allwinner Technology Co Ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2021-06-29
Anticipated expiration: 2039-12-27
Also published as: CN113055032B

Abstract

The application relates to a method, a device and computer equipment for acquiring compensation values of IQ mismatch and carrier leakage. And obtaining a first updating maximum power value and a first updating minimum power value according to a first power value obtained by the transmitted signal, and determining a first updating iteration point. And judging whether the preset evaluation standard is met, if so, updating the iteration condition, and determining a second updating iteration point. And determining a second updating maximum power value and a second updating minimum power value by obtaining the power value of the second updating iteration point. And taking the second updated maximum power value as the initial maximum power value, taking the second updated minimum power value as the initial minimum power value, taking the updated search times as the initial search times, and repeating the updating and judging operations until a preset termination condition is met. The method provided by the embodiment of the application has low complexity.

Description

Method and device for acquiring compensation values of IQ mismatch and carrier leakage and computer equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for acquiring compensation values of IQ mismatch and carrier leakage, and a computer device.

Background

In communication technology, there are problems of carrier leakage and IQ mismatch, which can seriously affect the transmission of signals in the communication process. Taking the transmitter as an example, the dc offset of the I channel and the Q channel of the baseband signal may cause carrier leakage, which may reduce the signal-to-noise ratio of the transmission signal. The gains of the I channel and the Q channel of the baseband filter, the frequency converter and other devices in the transmitter cannot be strictly equal, the phase difference cannot ensure orthogonality, and the deviation of the process can generate IQ mismatch, so that the transmitter generates a mirror image signal with a certain size, and the quality of a transmission signal is influenced.

Aiming at IQ mismatch and carrier leakage problems in the communication technology, a data-aided method of a training sequence is mainly utilized, and compensation values of IQ mismatch and carrier leakage are solved by constructing a signal model of the training sequence based on IQ mismatch and carrier leakage. In the conventional technology, compensation values of IQ mismatch and carrier leakage are obtained by matrix operation, high-order equation solving algorithm and the like.

However, these methods have a problem of computational complexity.

Disclosure of Invention

In view of the above, it is necessary to provide a method, an apparatus and a computer device for acquiring compensation values of IQ mismatch and carrier leakage.

In order to achieve the above object, in one aspect, an embodiment of the present application provides a method for obtaining compensation values of IQ mismatch and carrier leakage, where the method includes:

acquiring an initial iteration point, an initial search frequency, an initial grid, an initial maximum power value and an initial minimum power value of a target compensation parameter, wherein the target compensation parameter comprises a carrier leakage compensation value and an IQ mismatch compensation value;

determining whether a preset termination condition is met according to the initial maximum power value, the initial minimum power value and the initial search times;

if the preset termination condition is not met, acquiring a first power value according to a transmitting signal, wherein the transmitting signal is a signal compensated by a compensation value of the target compensation parameter acquired last time; if the preset termination condition is met, outputting an iteration point corresponding to the initial minimum power value as a compensation value of the target compensation parameter;

updating the initial maximum power value and the initial minimum power value according to the first power value to obtain a first updated maximum power value and a first updated minimum power value;

updating the initial iteration point according to the first updated minimum power value to obtain a first updated iteration point;

determining whether a preset evaluation standard is met or not according to the first updated maximum power value and the first updated minimum power value, and if the preset evaluation standard is met, updating the initial search times and the initial grid to obtain updated search times and updated grids;

updating the first updating iteration point according to the updating grid to obtain a second updating iteration point;

acquiring a power value corresponding to the second updating iteration point to obtain a second power value;

updating the first updated maximum power value and the first updated minimum power value by using the second power value to obtain a second updated maximum power value and a second updated minimum power value;

and taking the second updated maximum power value as the initial maximum power value, taking the second updated minimum power value as the initial minimum power value, taking the updated search times as the initial search times, and returning to execute the step of determining whether a preset termination condition is met according to the initial maximum power value, the initial minimum power value and the initial search times.

In one embodiment, the updating the first update iteration point according to the update grid to obtain a second update iteration point includes:

determining a mutation operator according to the first updating iteration point and the updating grid;

and determining the second updating iteration point according to the mutation operator.

In one embodiment, the determining a mutation operator according to the first update iteration point and the update grid includes:

acquiring a random number;

and determining the mutation operator according to the random number.

In one embodiment, the determining whether a preset evaluation criterion is met according to the first updated maximum power value and the first updated minimum power value, and if the preset evaluation criterion is met, updating the initial search times and the initial grid to obtain updated search times and updated grid includes:

determining whether a first preset evaluation criterion is met according to the first updated maximum power value and the first updated minimum power value;

if the first preset evaluation criterion is met, updating the initial search times and the initial grids to obtain the updated search times and the updated grids;

if the first preset evaluation standard is not met, determining whether a second preset evaluation standard is met;

and if the second preset evaluation criterion is met, updating the initial search times to obtain the updated search times.

In one embodiment, the determining whether a preset evaluation criterion is met according to the first updated maximum power value and the first updated minimum power value, and if the preset evaluation criterion is met, updating the initial search times and the initial grid to obtain updated search times and updated grid further includes:

if the first updating iteration point does not meet the second preset evaluation standard, the first updating iteration point is subjected to variation according to the initial grid to obtain a third updating iteration point;

and taking the third updating iteration point as the second updating iteration point, and returning to the step of obtaining the power value corresponding to the second updating iteration point to obtain a second power value.

In one embodiment, the determining whether a first preset evaluation criterion is satisfied according to the first updated maximum power value and the first updated minimum power value includes:

determining a ratio of the first updated maximum power value to the first updated minimum power value according to the first updated maximum power value and the first updated minimum power value to obtain a first suppression degree;

judging whether the first inhibition degree meets a first preset inhibition degree or not;

if the first suppression degree meets the first preset suppression degree, determining that the first preset evaluation standard is met;

and if the first inhibition degree does not meet the first preset inhibition degree, determining that the first preset evaluation standard is not met.

In one embodiment, the determining whether a preset termination condition is met according to the initial maximum power value, the initial minimum power value and the initial search times includes:

determining the ratio of the initial maximum power value to the initial minimum power value according to the initial maximum power value and the initial minimum power value to obtain an initial inhibition degree;

judging whether the initial suppression degree meets a second preset suppression degree or not;

if the initial suppression degree meets the second preset suppression degree, determining that the preset termination condition is met;

if the initial inhibition degree does not meet the second preset inhibition degree, judging whether the initial search frequency reaches a preset search frequency or not;

if the initial search times reach the preset search times, determining that the preset termination condition is met;

and if the initial search frequency does not reach the preset search frequency, determining that the preset termination condition is not met.

The embodiment of the present application provides an apparatus for obtaining compensation values of IQ mismatch and carrier leakage, including:

the device comprises an initialization module, a search module and a processing module, wherein the initialization module is used for acquiring an initial iteration point, an initial search frequency, an initial grid, an initial maximum power value and an initial minimum power value of a target compensation parameter, and the target compensation parameter comprises a carrier leakage compensation value and an IQ mismatch compensation value;

the termination judging module is used for determining whether a preset termination condition is met according to the initial maximum power value, the initial minimum power value and the initial search times;

the judgment processing module is used for acquiring a first power value according to a transmitting signal if the preset termination condition is not met, wherein the transmitting signal is a signal compensated by a compensation value of a target compensation parameter acquired last time; if the preset termination condition is met, outputting an iteration point corresponding to the initial minimum power value as a compensation value of the target compensation parameter;

a first power value updating module, configured to update the initial maximum power value and the initial minimum power value according to the first power value to obtain a first updated maximum power value and a first updated minimum power value;

a first iteration point determining module, configured to update the initial iteration point according to the first updated minimum power value to obtain a first updated iteration point;

a search condition updating module, configured to determine whether a preset evaluation criterion is met according to the first updated maximum power value and the first updated minimum power value, and if the preset evaluation criterion is met, update the initial search times and the initial grid to obtain updated search times and an updated grid;

the second iteration point determining module is used for updating the first updating iteration point according to the updating grid to obtain a second updating iteration point;

a second power value obtaining module, configured to obtain a power value corresponding to the second update iteration point, so as to obtain a second power value;

a second power value updating module, configured to update the first updated maximum power value and the first updated minimum power value by using the second power value to obtain a second updated maximum power value and a second updated minimum power value;

and the iteration module is used for taking the second updated maximum power value as the initial maximum power value, taking the second updated minimum power value as the initial minimum power value, taking the updated search times as the initial search times, and returning to execute the step of determining whether a preset termination condition is met according to the initial maximum power value, the initial minimum power value and the initial search times.

An embodiment of the present application provides a computer device, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the steps of the method described above when executing the computer program.

An embodiment of the application provides a computer-readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the method as described above.

The method, the device and the computer equipment for acquiring the compensation values of IQ mismatch and carrier leakage are provided by the embodiment of the application. And acquiring an initial iteration point, an initial search frequency, an initial grid, an initial maximum power value and an initial minimum power value of the target compensation parameter. And determining the first updated maximum power value and the first updated minimum power value through simple size comparison according to the first power value obtained by the transmitted signal, and taking an iteration point corresponding to the first updated minimum power value as a first updated iteration point. And judging whether the preset evaluation standard is met, if so, updating the iteration condition, and determining a second updating iteration point. The iteration condition is updated only through simple multiplication and division calculation, and the calculation complexity is low. And determining a second updating maximum power value and a second updating minimum power value by obtaining the power value of the second updating iteration point. And taking the second updated maximum power value as the initial maximum power value, taking the second updated minimum power value as the initial minimum power value, taking the updated search times as the initial search times, and repeating the updating and judging operations until a preset termination condition is met. Therefore, the method provided by the embodiment can obtain the compensation values of the IQ mismatch and the carrier leakage through simple comparison, updating and searching, does not need complicated matrix or solution of high-order equations, and has low calculation complexity. Meanwhile, the method for acquiring the compensation values of the IQ mismatch and the carrier leakage provided by the embodiment has high applicability, and can be used in systems with the problems of the carrier leakage and the IQ mismatch. In addition, the method provided by the embodiment has low requirement on the precision of the hardware circuit, reduces the difficulty of hardware design, and has high robustness.

Drawings

Fig. 1 is a schematic diagram of an application scenario of a compensation value obtaining method for IQ mismatch and carrier leakage according to an embodiment of the present application;

fig. 2 is a schematic flowchart illustrating steps of a method for obtaining compensation values of IQ mismatch and carrier leakage according to an embodiment of the present disclosure;

fig. 3 is a schematic flowchart illustrating steps of a method for obtaining compensation values of IQ mismatch and carrier leakage according to an embodiment of the present disclosure;

fig. 4 is a schematic flowchart illustrating steps of a method for obtaining compensation values of IQ mismatch and carrier leakage according to an embodiment of the present disclosure;

fig. 5 is a flowchart illustrating steps of a method for obtaining compensation values of IQ mismatch and carrier leakage according to an embodiment of the present application;

fig. 6 is a flowchart illustrating steps of a method for obtaining compensation values of IQ mismatch and carrier leakage according to an embodiment of the present application;

fig. 7 is a flowchart illustrating steps of a method for obtaining compensation values of IQ mismatch and carrier leakage according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of an apparatus for obtaining compensation values of IQ mismatch and carrier leakage according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a computer device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The method for acquiring the compensation values of IQ mismatch and carrier leakage provided by the embodiment of the application can be applied to a system with the problems of carrier leakage and IQ mismatch in the communication technology. The method for acquiring the compensation values of IQ mismatch and carrier leakage is applied to the calibration path shown in FIG. 1. The calibration path comprises signal generation equipment, target compensation parameter pre-compensation equipment, a digital-to-analog converter, a first low-pass filter, a frequency mixer, a power amplifier, frequency reduction equipment, a second low-pass filter, an analog-to-digital converter and control equipment which are sequentially in signal connection, wherein the control equipment is respectively in signal connection with the signal generation equipment and the target compensation parameter pre-compensation equipment. The control device includes a power harvesting component. The digital-to-analog converter is used for converting a digital signal into an analog signal; the low-pass filter is used for filtering the signal; the mixer is used for multiplying signals with different frequencies to realize frequency conversion; the power amplifier is used for amplifying the power of the signal; the frequency reduction equipment is used for reducing the signal frequency; the analog-to-digital converter is used for converting an analog signal into a digital signal.

The following describes the technical solutions of the present application and how to solve the technical problems with the technical solutions of the present application in detail with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present application provides a method for acquiring compensation values of IQ mismatch and carrier leakage, which is described by taking an example that the method for acquiring compensation values of IQ mismatch and carrier leakage is applied to the control device shown in fig. 1, and the method includes:

s100, acquiring an initial iteration point, an initial search frequency, an initial grid, an initial maximum power value and an initial minimum power value of a target compensation parameter, wherein the target compensation parameter comprises a carrier leakage compensation value and an IQ mismatch compensation value.

The target compensation parameter is used for representing the parameter to be compensated. The target compensation parameters may include carrier leakage compensation values and IQ mismatch compensation values. Wherein the carrier leakage compensation value is also referred to as a direct current offset (DC offset) compensation value. The present embodiment takes the carrier leakage compensation value as an example to explain the process of the method. And setting an initial iteration point, the initial search times, the initial grid, the initial maximum power value and the initial minimum power value of the carrier leakage compensation value by a user. The control device obtains an initial iteration point of the carrier leakage compensation value, the initial search times, the initial grid, the initial maximum power value, and the initial minimum power value, where the initial maximum power value and the initial minimum power value may be set according to a power value of the initial iteration point of the carrier leakage compensation value obtained by the power obtaining component. The initial number of searches may be represented as N and the initial grid may be represented as M × M. In this embodiment, the setting of the initial iteration point of the carrier leakage compensation value, the initial search times, the initial grid, the specific data of the initial maximum power value and the initial minimum power value is not limited at all, and a user may set the initial iteration point, the initial search times, and the initial grid according to an actual situation.

And S110, determining whether a preset termination condition is met according to the initial maximum power value, the initial minimum power value and the initial search times.

The preset termination condition is used for representing the condition of stopping iteration of the IQ mismatch and carrier leakage compensation value acquisition method. The preset termination condition may be whether the size of the suppression degree is satisfied, whether the size of the search frequency is satisfied, or whether the size of the suppression degree and the size of the search frequency are satisfied. The present embodiment does not set any limitation to the specific conditions of the preset termination condition as long as the function thereof can be realized.

And S121, if the preset termination condition is met, outputting the iteration point corresponding to the initial minimum power value as the compensation value of the target compensation parameter.

If the preset termination condition is met, stopping iteration of the IQ mismatch and carrier leakage compensation value acquisition method, wherein the iteration point corresponding to the initial minimum power value is the optimal solution of the carrier leakage compensation value. And the control equipment inputs the optimal solution of the carrier leakage compensation value into the target compensation parameter pre-compensation equipment.

And S120, if the preset termination condition is not met, acquiring a first power value according to a transmitting signal, wherein the transmitting signal is a signal subjected to compensation of a compensation value of the target compensation parameter acquired last time.

If the preset termination condition is not met, the loop iteration is needed to be continued, and the iteration point in the loop iteration process is the carrier leakage compensation value. And inputting the iteration point into the target compensation parameter pre-compensation equipment after updating the iteration point every time. The control device controls the signal generation device to generate a training signal, the training signal passes through the target compensation parameter pre-compensation device, and the obtained signal is a signal compensated by the target compensation parameter pre-compensation device and is called a first compensation signal. The first compensation signal is processed by the digital-to-analog converter, the first low-pass filter, the mixer, the power amplifier, the frequency reduction device, the second low-pass filter and the analog-to-digital converter in sequence to obtain a transmission signal, and the transmission signal is compensated by the target compensation parameter pre-compensation device. The power acquisition component of the control device acquires a power value of the transmission signal to obtain a first power value.

S130, updating the initial maximum power value and the initial minimum power value according to the first power value to obtain a first updated maximum power value and a first updated minimum power value.

There are various ways to update the initial maximum power value and the initial minimum power value according to the first power value, and in one embodiment, the initial maximum power value and the initial minimum power value may be updated in the following manner: the control device compares the obtained first power value with the initial maximum power value and the initial minimum power value, respectively. If the first power value is greater than the initial maximum power value, updating the initial maximum power value, and at this time, updating the initial maximum power value to the first power value, that is, the first updated maximum power value is equal to the first power value, and the first minimum power value is equal to the initial minimum power value; if the first power value is smaller than the initial minimum power value, updating the minimum power value, and at this time, updating the initial minimum power value to the first power value, that is, the first updated maximum power value is equal to the initial maximum power value, and the first updated minimum power value is equal to the first power value; if the first power value is neither greater than the initial minimum power value nor less than the initial minimum power value, at this time, the first updated maximum power value is equal to the initial maximum power value, and the first updated minimum power value is equal to the initial minimum power value.

And S140, updating the initial iteration point according to the first updated minimum power value to obtain a first updated iteration point.

And the control equipment updates the initial iteration point by using the iteration point corresponding to the first updated minimum power value to obtain a first updated iteration point, and inputs the first updated iteration point into the target compensation parameter pre-compensation equipment.

S150, determining whether a preset evaluation standard is met or not according to the first updated maximum power value and the first updated minimum power value, and if the preset evaluation standard is met, updating the initial search times and the initial grid to obtain updated search times and updated grids.

The preset evaluation criterion is used for representing the condition of updating the search condition. The preset evaluation standard may be whether the preset evaluation standard meets the magnitude of the inhibition degree or not, and may also be whether the preset evaluation standard meets the magnitude of the power value or not. And if the preset evaluation criteria are met, updating the initial search times and the initial grids to obtain the updated search times and the updated grids. In one embodiment, if the initial search frequency set initially is 0, increasing the initial search frequency to obtain the updated search frequency; and if the initial search frequency set initially is 200, reducing the initial search frequency to obtain the updated search frequency. The embodiment does not limit the specific process of updating the initial search times and the initial grid, and the user can select the initial search times and the initial grid according to the actual situation.

And S160, updating the first updating iteration point according to the updating grid to obtain a second updating iteration point.

And the control equipment updates the first updating iteration point in the range of the updating grid according to the updating grid to obtain a second updating iteration point. The specific method of updating in the updated mesh range may be to select any one point in the updated mesh range as the second updated iteration point, or to determine the second updated iteration point in the updated mesh range according to a certain rule. The embodiment does not limit the method, and the user can select different updating methods according to actual requirements.

And S170, acquiring a power value corresponding to the second updating iteration point to obtain a second power value.

And S180, updating the first updated maximum power value and the first updated minimum power value by using the second power value to obtain a second updated maximum power value and a second updated minimum power value.

And acquiring the power value of the second updating iteration point by using the power acquisition component of the control equipment to obtain a second power value. Meanwhile, the control device updates the first updated maximum power value and the first updated minimum power value by using the second power value, and for a specific updating process, reference may be made to the process of updating the initial maximum power value and the initial minimum power value by using the first power value in step S130 to obtain the first updated maximum power value and the first updated minimum power value, which is not described herein again.

And S190, taking the second updated maximum power value as the initial maximum power value, taking the second updated minimum power value as the initial minimum power value, taking the updated search times as the initial search times, and returning to execute the step of determining whether a preset termination condition is met according to the initial maximum power value, the initial minimum power value and the initial search times.

And the control device takes the second updated maximum power value obtained by updating as the initial maximum power value, takes the second updated minimum power value obtained by updating as the initial minimum power value, takes the updated search times as the initial search times, returns to execute the step S110, and continues to circularly update until the preset termination condition is met.

The acquisition process of the IQ mismatch compensation value is similar to the acquisition process of the carrier leakage compensation value, and the optimal solution of the IQ mismatch compensation value can be obtained by referring to the execution of the steps S100 to S190. And will not be described in detail herein.

The method, the device and the computer equipment for acquiring the compensation values of IQ mismatch and carrier leakage are provided by the embodiment of the application. And acquiring an initial iteration point, an initial search frequency, an initial grid, an initial maximum power value and an initial minimum power value of the target compensation parameter. And determining the first updated maximum power value and the first updated minimum power value through simple size comparison according to the first power value obtained by the transmitted signal, and taking an iteration point corresponding to the first updated minimum power value as a first updated iteration point. And judging whether the preset evaluation standard is met, if so, updating the iteration condition, and determining a second updating iteration point. The iteration condition is updated only through simple multiplication and division calculation, and the calculation complexity is low. And determining a second updating maximum power value and a second updating minimum power value by obtaining the power value of the second updating iteration point. And taking the second updated maximum power value as the initial maximum power value, taking the second updated minimum power value as the initial minimum power value, taking the updated search times as the initial search times, and repeating the updating and judging operations until a preset termination condition is met. Therefore, the method provided by the embodiment can obtain the compensation value of the target compensation parameter through simple comparison, updating and searching, does not need complicated matrix or solution of high-order equation, and has low calculation complexity. Meanwhile, the method for acquiring the compensation values of the IQ mismatch and the carrier leakage provided by the embodiment has high applicability, and can be used in systems with the problems of the carrier leakage and the IQ mismatch. In addition, the method provided by the embodiment has low requirement on the precision of the hardware circuit, reduces the difficulty of hardware design, and has high robustness.

Referring to fig. 3, an embodiment of the present application relates to a possible implementation manner of updating the first update iteration point according to the update grid to obtain a second update iteration point, where step S160 includes:

s161, determining a mutation operator according to the first updating iteration point and the updating grid.

The mutation operator is used for updating the first updating iteration point. The mutation operator may be determined from the first update iteration point and the update grid. In one embodiment, referring to a possible implementation manner of the determining a mutation operator according to the first update iteration point and the update grid, as shown in fig. 4, step S161 includes:

s163, a random number is acquired.

S164, determining the mutation operator according to the random number.

And the control device determines the mutation operator by taking the first updating iteration point as a central point of the updating grid and taking the size of the updating grid as a boundary, namely, the control device randomly selects a number in the range of the updating grid. And taking a randomly selected number as the random number, wherein the random number can indicate the searching step size and the searching direction. Determining the mutation operator in the range of the updating grid according to the searching step length and the direction indicated by the random number.

S162, determining the second updating iteration point according to the mutation operator.

The control device updates the first update iteration point according to the determined mutation operator, and can determine the second update iteration point. Since it is determined that the random number of the mutation operator has a random property, the obtained mutation operator also has a random property, and meanwhile, the second update iteration point determined according to the mutation operator also has a random property. And the random number is randomly selected in the range of the updated grid, complex calculation is not needed, and the complexity is low.

Referring to fig. 5, an embodiment of the present application relates to a possible implementation manner in which whether a preset evaluation criterion is met is determined according to the first updated maximum power value and the first updated minimum power value, and if the preset evaluation criterion is met, the initial search times and the initial grid are updated to obtain updated search times and updated grid, where step S150 includes:

and S151, determining whether a first preset evaluation criterion is met according to the first updated maximum power value and the first updated minimum power value.

If the preset evaluation criterion is that whether the preset evaluation criterion meets the magnitude of the power value, the first preset evaluation criterion is that whether the preset evaluation criterion meets the magnitude of the power value; if the preset evaluation criterion is whether the suppression degree is satisfied, the first preset evaluation criterion is also whether the suppression degree is satisfied.

In an embodiment, said determining whether a first preset evaluation criterion is met according to said first updated maximum power value and said first updated minimum power value, as shown in fig. 6, step S151 includes:

s1510 determines a ratio of the first updated maximum power value to the first updated minimum power value according to the first updated maximum power value and the first updated minimum power value, so as to obtain a first suppression degree.

S1511, determining whether the first suppression degree satisfies a first preset suppression degree.

In the present embodiment, the preset evaluation criterion is whether the magnitude of the suppression degree is satisfied, that is, whether the first preset suppression degree is satisfied. The first preset suppression degree is used for representing a preset first power ratio, and the first suppression degree is used for representing the ratio of the first updated maximum power value and the first updated minimum power value. The control device calculates a ratio of the first updated maximum power value to the first updated minimum power value according to the first updated maximum power value and the first updated minimum power value, to obtain the first suppression degree. The control device judges whether the first preset evaluation criterion is satisfied by judging whether the first suppression degree is greater than a first preset suppression degree.

S1512, if the first suppression degree satisfies the first preset suppression degree, determining that the first preset evaluation criterion is satisfied.

S1523, if the first suppression degree does not satisfy the first preset suppression degree, determining that the first preset evaluation criterion is not satisfied.

And if the first inhibition degree is greater than the first preset inhibition degree, the first preset evaluation criterion is met. And if the first suppression degree is less than or equal to the first preset suppression degree, the first preset evaluation standard is not met. In a specific embodiment, the first predetermined suppression degree is 30dB, that is, whether the first predetermined evaluation criterion is satisfied is determined by determining whether the first suppression degree is greater than 30 dB.

And S152, if the first preset evaluation criterion is met, updating the initial search times and the initial grids to obtain the updated search times and the updated grids.

And if the first preset evaluation criterion is met through judgment, updating the initial search times and the initial grid. In one embodiment, if the initial search frequency set initially is 0, increasing the initial search frequency to obtain the updated search frequency; if the initial number of times set initially is 200, reducing the initial search number of times to obtain the updated search number of times. In a specific embodiment, the initial grid is updated to a unit grid, i.e., a 1 × 1 grid. The embodiment does not limit the initial search times and the process of updating the initial grid at all, and the user can select the initial search times and the process according to the actual situation.

S153, if the first preset evaluation standard is not met, determining whether a second preset evaluation standard is met;

since the first preset evaluation criterion is whether the magnitude of the suppression degree is satisfied, the second preset evaluation criterion is also whether the magnitude of the suppression degree is satisfied. The determination of whether the second preset evaluation criterion is satisfied may refer to the description of determining whether the first preset evaluation criterion is satisfied, which is not described herein again.

And S154, if the second preset evaluation criterion is met, updating the initial search times to obtain the updated search times.

And if the second preset evaluation criterion is met through judgment, updating the initial search times. In one embodiment, if the initial search frequency set initially is 0, increasing the initial search frequency to obtain the updated search frequency; if the initial number of times set initially is 200, reducing the initial search number of times to obtain the updated search number of times. The updating process of the initial search times is not limited in any way, and a user can select the initial search times according to actual conditions.

With continued reference to fig. 5, the step S150 further includes:

and S155, if the second preset evaluation criterion is not met, updating the first updating iteration point according to the initial grid to obtain a third updating iteration point.

And if the second preset evaluation standard is determined not to be met through judgment, calculating an initial mutation operator according to the initial grid, and updating the first updating iteration point according to the initial mutation operator to obtain the third updating iteration point. The initial mutation operator may be calculated in a similar manner to the mutation operator, and other methods may be used. The method for calculating the initial mutation operator is not limited in this embodiment, and a user can solve the problem according to actual conditions.

And S156, taking the third updating iteration point as the second updating iteration point, and returning to the step of obtaining the power value corresponding to the second updating iteration point to obtain a second power value.

And the control device takes the third updating iteration point as the second updating iteration point, and returns to execute the step S170, so that the method is continuously executed until the preset termination condition is met.

Referring to fig. 7, an embodiment of the present application relates to a possible implementation manner of determining whether a preset termination condition is satisfied according to the initial maximum power value, the initial minimum power value, and the initial search times, where step S110 includes:

and S111, determining the ratio of the initial maximum power value to the initial minimum power value according to the initial maximum power value and the initial minimum power value to obtain an initial inhibition degree.

In this embodiment, the preset termination condition is whether the magnitude of the suppression degree and the magnitude of the number of searches are satisfied, that is, whether the preset termination condition is satisfied is determined by determining whether any one of the magnitude of the suppression degree and the magnitude of the number of searches is satisfied. And the control equipment calculates the ratio of the initial maximum power value to the initial minimum power value according to the initial maximum power value and the initial minimum power value to obtain the initial inhibition degree.

And S112, judging whether the initial suppression degree meets a second preset suppression degree.

S113, if the initial suppression degree satisfies the second preset suppression degree, determining that the preset termination condition is satisfied.

And S114, if the initial suppression degree does not meet the second preset suppression degree, judging whether the initial search frequency reaches a preset search frequency.

The initial suppression degree is used for representing a ratio of the initial maximum power value to the initial minimum power value, and the second preset suppression degree is used for representing a second preset power ratio. And the control equipment compares the initial suppression degree with the second preset suppression degree, and if the initial suppression degree is greater than the second preset suppression degree, the control equipment determines that the initial suppression degree meets the preset termination condition. And if the initial inhibition degree is not greater than the second preset inhibition degree, judging whether the initial search frequency reaches a preset search frequency. If the initial search frequency is from 0, the preset search frequency is greater than 0, and if the initial search frequency is from N (N >0), the preset search frequency is less than N.

And S115, if the initial search frequency reaches the preset search frequency, determining that the preset termination condition is met.

And S116, if the initial search frequency does not reach the preset search frequency, determining that the preset termination condition is not met.

If the initial search frequency is equal to the preset search frequency, it may be determined that the preset termination condition is satisfied. If the initial search frequency is not equal to the preset search frequency, it may be determined that the preset termination condition is not satisfied. In this embodiment, it may also be determined whether the initial search frequency reaches the preset search frequency, and then whether the initial suppression degree satisfies the second preset suppression degree. In this embodiment, the order of determining the initial search times and the initial suppression degree is not limited, and it may be determined that the preset termination condition is satisfied as long as one of the initial search times and the initial suppression degree is satisfied.

It should be understood that, although the steps in the above-described flowcharts are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a portion of the steps in the above-described flowcharts may include multiple sub-steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or the stages is not necessarily sequential, but may be performed alternately or alternatingly with other steps or at least a portion of the sub-steps or stages of other steps.

Referring to fig. 8, an embodiment of the present application provides an IQ mismatch and carrier leakage compensation value obtaining apparatus 10, which includes an initialization module 100, a termination determining module 110, a determination processing module 120, a first power value updating module 130, a first iteration point determining module 140, a search condition updating module 150, a second iteration point determining module 160, a second power value obtaining module 170, a second power value updating module 180, and an iteration module 190. Wherein,

the initialization module 100 is configured to obtain an initial iteration point, an initial search time, an initial grid, an initial maximum power value, and an initial minimum power value of a target compensation parameter, where the target compensation parameter includes a carrier leakage compensation value and an IQ mismatch compensation value.

The termination determining module 110 is configured to determine whether a preset termination condition is met according to the initial maximum power value, the initial minimum power value, and the initial search times.

The judgment processing module 120 is configured to, if the preset termination condition is not met, obtain a first power value according to a transmission signal, where the transmission signal is a signal compensated by a compensation value of a last obtained target compensation parameter; and if the preset termination condition is met, outputting the iteration point corresponding to the initial minimum power value as the compensation value of the target compensation parameter.

The first power value updating module 130 is configured to update the initial maximum power value and the initial minimum power value according to the first power value, so as to obtain a first updated maximum power value and a first updated minimum power value.

The first iteration point determining module 140 is configured to update the initial iteration point according to the first updated minimum power value, so as to obtain a first updated iteration point.

The search condition updating module 150 is configured to determine whether a preset evaluation criterion is met according to the first updated maximum power value and the first updated minimum power value, and if the preset evaluation criterion is met, update the initial search frequency and the initial grid to obtain an updated search frequency and an updated grid.

The second iteration point determining module 160 is configured to update the first update iteration point according to the update grid, so as to obtain a second update iteration point.

The second power value obtaining module 170 is configured to obtain a power value corresponding to the second update iteration point, so as to obtain a second power value.

The second power value updating module 180 is configured to update the first updated maximum power value and the first updated minimum power value with the second power value to obtain a second updated maximum power value and a second updated minimum power value.

The iteration module 190 is configured to use the second updated maximum power value as the initial maximum power value, use the second updated minimum power value as the initial minimum power value, use the updated search times as the initial search times, and return to execute the step of determining whether a preset termination condition is satisfied according to the initial maximum power value, the initial minimum power value, and the initial search times.

In one embodiment, the second iteration point determining module 160 is further configured to determine a mutation operator from the first updated iteration point and the updated mesh; and determining the second updating iteration point according to the mutation operator.

In one embodiment, the second iteration point determining module 160 is further configured to obtain a random number; and determining the mutation operator according to the random number.

In one embodiment, the search condition updating module 150 is further configured to determine whether a first preset evaluation criterion is satisfied according to the first updated maximum power value and the first updated minimum power value; if the first preset evaluation criterion is met, updating the initial search times and the initial grids to obtain the updated search times and the updated grids; if the first preset evaluation standard is not met, determining whether a second preset evaluation standard is met; and if the second preset evaluation criterion is met, updating the initial search times to obtain the updated search times.

In an embodiment, the search condition updating module 150 is further configured to, if the second preset evaluation criterion is not satisfied, perform variation on the first update iteration point according to the initial grid to obtain a third update iteration point; and taking the third updating iteration point as the second updating iteration point, and returning to the step of obtaining the power value corresponding to the second updating iteration point to obtain a second power value.

In one embodiment, the search condition updating module 150 is further configured to determine a ratio of the first updated maximum power value and the first updated minimum power value according to the first updated maximum power value and the first updated minimum power value, so as to obtain a first suppression degree; judging whether the first inhibition degree meets a first preset inhibition degree or not; if the first suppression degree meets the first preset suppression degree, determining that the first preset evaluation standard is met; and if the first inhibition degree does not meet the first preset inhibition degree, determining that the first preset evaluation standard is not met.

In an embodiment, the termination determining module 110 is further configured to determine a ratio of the initial maximum power value to the initial minimum power value according to the initial maximum power value and the initial minimum power value, so as to obtain an initial suppression degree; judging whether the initial suppression degree meets a second preset suppression degree or not; if the initial suppression degree meets the second preset suppression degree, determining that the preset termination condition is met; if the initial inhibition degree does not meet the second preset inhibition degree, judging whether the initial search frequency reaches a preset search frequency or not; if the initial search times reach the preset search times, determining that the preset termination condition is met; and if the initial search frequency does not reach the preset search frequency, determining that the preset termination condition is not met.

For specific limitations of the IQ mismatch and carrier leakage compensation value acquisition apparatus 10, reference may be made to the above limitations of the IQ mismatch and carrier leakage compensation value acquisition method, and details are not repeated here. The modules in the IQ mismatch and carrier leakage compensation value obtaining apparatus 10 may be implemented wholly or partially by software, hardware, or a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

Referring to fig. 9, in one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as shown in fig. 9. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used for storing initial iteration points, initial search times, compensation values and the like. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a compensation value acquisition method for IQ mismatch and carrier leakage.

Those skilled in the art will appreciate that the architecture shown in fig. 9 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided, comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the following steps when executing the computer program:

The processor, when executing the computer program, further performs the steps of: determining a mutation operator according to the first updating iteration point and the updating grid; and determining the second updating iteration point according to the mutation operator.

The processor, when executing the computer program, further performs the steps of: acquiring a random number; and determining the mutation operator according to the random number.

The processor, when executing the computer program, further performs the steps of: determining whether a first preset evaluation criterion is met according to the first updated maximum power value and the first updated minimum power value; if the first preset evaluation criterion is met, updating the initial search times and the initial grids to obtain the updated search times and the updated grids; if the first preset evaluation standard is not met, determining whether a second preset evaluation standard is met; and if the second preset evaluation criterion is met, updating the initial search times to obtain the updated search times.

The processor, when executing the computer program, further performs the steps of: if the first updating iteration point does not meet the second preset evaluation standard, the first updating iteration point is subjected to variation according to the initial grid to obtain a third updating iteration point; and taking the third updating iteration point as the second updating iteration point, and returning to the step of obtaining the power value corresponding to the second updating iteration point to obtain a second power value.

The processor, when executing the computer program, further performs the steps of: determining a ratio of the first updated maximum power value to the first updated minimum power value according to the first updated maximum power value and the first updated minimum power value to obtain a first suppression degree; judging whether the first inhibition degree meets a first preset inhibition degree or not; if the first suppression degree meets the first preset suppression degree, determining that the first preset evaluation standard is met; and if the first inhibition degree does not meet the first preset inhibition degree, determining that the first preset evaluation standard is not met.

The processor, when executing the computer program, further performs the steps of: determining the ratio of the initial maximum power value to the initial minimum power value according to the initial maximum power value and the initial minimum power value to obtain an initial inhibition degree; judging whether the initial suppression degree meets a second preset suppression degree or not; if the initial suppression degree meets the second preset suppression degree, determining that the preset termination condition is met; if the initial inhibition degree does not meet the second preset inhibition degree, judging whether the initial search frequency reaches a preset search frequency or not; if the initial search times reach the preset search times, determining that the preset termination condition is met; and if the initial search frequency does not reach the preset search frequency, determining that the preset termination condition is not met.

The specific processes and advantages of the above method steps implemented by the computer device processor provided in the above embodiments are similar to those of the corresponding method embodiments, and are not described herein again.

One embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon, which when executed by a processor, performs the steps of: acquiring an initial iteration point, an initial search frequency, an initial grid, an initial maximum power value and an initial minimum power value of a target compensation parameter, wherein the target compensation parameter comprises a carrier leakage compensation value and an IQ mismatch compensation value;

The computer program when executed by a processor further realizes the steps of: determining a mutation operator according to the first updating iteration point and the updating grid; and determining the second updating iteration point according to the mutation operator.

The computer program when executed by a processor further realizes the steps of: acquiring a random number; and determining the mutation operator according to the random number.

The computer program when executed by a processor further realizes the steps of: determining whether a first preset evaluation criterion is met according to the first updated maximum power value and the first updated minimum power value; if the first preset evaluation criterion is met, updating the initial search times and the initial grids to obtain the updated search times and the updated grids; if the first preset evaluation standard is not met, determining whether a second preset evaluation standard is met; and if the second preset evaluation criterion is met, updating the initial search times to obtain the updated search times.

The computer program when executed by a processor further realizes the steps of: if the first updating iteration point does not meet the second preset evaluation standard, the first updating iteration point is subjected to variation according to the initial grid to obtain a third updating iteration point; and taking the third updating iteration point as the second updating iteration point, and returning to the step of obtaining the power value corresponding to the second updating iteration point to obtain a second power value.

The computer program when executed by a processor further realizes the steps of: determining a ratio of the first updated maximum power value to the first updated minimum power value according to the first updated maximum power value and the first updated minimum power value to obtain a first suppression degree; judging whether the first inhibition degree meets a first preset inhibition degree or not; if the first suppression degree meets the first preset suppression degree, determining that the first preset evaluation standard is met; and if the first inhibition degree does not meet the first preset inhibition degree, determining that the first preset evaluation standard is not met.

The computer program when executed by a processor further realizes the steps of: determining the ratio of the initial maximum power value to the initial minimum power value according to the initial maximum power value and the initial minimum power value to obtain an initial inhibition degree; judging whether the initial suppression degree meets a second preset suppression degree or not; if the initial suppression degree meets the second preset suppression degree, determining that the preset termination condition is met; if the initial inhibition degree does not meet the second preset inhibition degree, judging whether the initial search frequency reaches a preset search frequency or not; if the initial search times reach the preset search times, determining that the preset termination condition is met; and if the initial search frequency does not reach the preset search frequency, determining that the preset termination condition is not met.

The specific processes and advantageous effects of implementing the above method steps by the computer-readable storage medium provided by the above embodiments are similar to those of the corresponding method embodiments, and are not described herein again.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A method for obtaining compensation values of IQ mismatch and carrier leakage, the method comprising:

2. The method of claim 1, wherein the updating the first update iteration point according to the update grid to obtain a second update iteration point comprises:

3. The method of claim 2, wherein determining a mutation operator from the first updated iteration point and the updated mesh comprises:

acquiring a random number;

and determining the mutation operator according to the random number.

4. The method of claim 1, wherein determining whether a preset evaluation criterion is satisfied according to the first updated maximum power value and the first updated minimum power value, and if the preset evaluation criterion is satisfied, updating the initial search times and the initial grid to obtain updated search times and updated grid comprises:

5. The method of claim 4, wherein the determining whether a preset evaluation criterion is satisfied according to the first updated maximum power value and the first updated minimum power value, and if the preset evaluation criterion is satisfied, updating the initial search times and the initial grid to obtain updated search times and updated grid, further comprises:

6. The method of claim 4, wherein determining whether a first preset evaluation criterion is met based on the first updated maximum power value and the first updated minimum power value comprises:

7. The method of claim 1, wherein determining whether a preset termination condition is satisfied according to the initial maximum power value, the initial minimum power value, and the initial search times comprises:

8. An IQ mismatch and carrier leakage compensation value acquisition device is characterized by comprising

9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 7.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.