CN118041464A

CN118041464A - Radio frequency signal correction device, method and radio frequency transmitting device

Info

Publication number: CN118041464A
Application number: CN202211413404.4A
Authority: CN
Inventors: 刘祥鹏; 张作锋; 张哲�; 陈嘉良; 周红星; 张国俊; 雷梦毕
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2024-05-14

Abstract

The embodiment of the application discloses a radio frequency signal correction device, a radio frequency signal correction method and a radio frequency transmitting device. The radio frequency signal correction device comprises an error estimation module, a detection module and a detection module, wherein the error estimation module is used for determining statistical test information of a radio frequency test signal according to the radio frequency test signal and a feedback test signal and determining quadrature error information of the radio frequency test signal according to the statistical test information; according to the quadrature error information, initializing and correcting information of the radio frequency test signal is determined; the feedback test signal is obtained by performing forward and backward processing on the radio frequency test signal; and the error correction module is connected with the error estimation module and is used for correcting the input radio frequency signal according to the initialization correction information. The device adopts a digital mode to realize the correction of the orthogonal consistency in the working bandwidth, improves the correction accuracy, is not limited by the working bandwidth, and is also applicable to the correction of the orthogonal consistency of the ultra-wideband channel.

Description

Radio frequency signal correction device, method and radio frequency transmitting device

Technical Field

The present disclosure relates to the field of communications, and in particular, to a device and method for correcting a radio frequency signal and a radio frequency transmitting device.

Background

Modern communication systems are increasingly demanding in terms of bandwidth for radio frequency transceivers, such as 5G low frequency broadband zero intermediate frequency systems, 5G high frequency ultra wideband systems. The conventional radio frequency analog device can not reach the index requirement of a communication system, the digital auxiliary analog calibration is a common optimization means, the IQ (quadrature) imbalance in a quadrature modulation system is optimized, the image interference can be greatly restrained at a transmitting end, the receiving dynamic range of signals is improved at a receiving end, and the like.

In the related art, in terms of IQ imbalance error calibration, the following schemes are common: (1) And (3) performing off-line test by adopting a signal source, a spectrometer and a computer, and performing detailed measurement on a specific module to obtain fixed channel parameters, and realizing error calibration based on the channel parameters. (2) And extracting channel parameters by using signal characteristics and adopting a blind iteration mode of the adaptive filter, so that error calibration is performed based on the extracted channel parameters. (3) After the mixer is transmitted, the envelope is detected, and the ADC (Analog-to-digital converter) sampling and frequency-reducing are carried out on the envelope, and then the estimation of the quadrature imbalance parameter is carried out.

The above listed common methods have respective drawbacks, in which, the scheme (1) is suitable for a scene with stable environment, and for the error change caused by the change of the external environment, the parameter cannot be corrected based on the environment, so the calibration effect is inaccurate. In the scheme (2), since a blind iteration mode is adopted, in the case of signal mutation, iteration parameters are unstable, and performance degradation is caused, so that system performance is reduced. Scheme (3) requires additional ADC and digital down conversion processing, increasing resources and power consumption. It can be seen that there is a need to provide a method for quadrature imbalance error calibration with digital assistance.

Disclosure of Invention

The embodiment of the application aims to provide a radio frequency signal correction device, a radio frequency signal correction method and a radio frequency transmitting device, which are used for solving the problem that in the prior art, the error correction effect on the quadrature imbalance of radio frequency signals is poor.

In order to solve the technical problems, the embodiment of the application is realized as follows:

in one aspect, an embodiment of the present application provides a radio frequency signal correction apparatus, including:

The error estimation module is used for determining statistical test information of the radio frequency test signal according to the radio frequency test signal and the feedback test signal, and determining quadrature error information of the radio frequency test signal according to the statistical test information; according to the quadrature error information, initializing and correcting information of the radio frequency test signal is determined; the feedback test signal is obtained by performing forward and backward processing on the radio frequency test signal;

And the error correction module is connected with the error estimation module and is used for correcting the input radio frequency signal according to the initialization correction information.

On the other hand, the embodiment of the application provides a radio frequency transmitting device, which comprises a controller, a first signal processing module, a second signal processing module, a radio frequency input end, a radio frequency output end and the radio frequency signal correcting device; the controller is connected with the signal generating module and the radio frequency signal correcting device; the signal generating module, the error correcting module and the error estimating module are respectively connected with the radio frequency input end; the error correction module is connected to the radio frequency output end through the first signal processing module; the error estimation module is connected to the first signal processing module through the second signal processing module;

the controller is used for controlling the signal generating module to generate a radio frequency test signal; the radio frequency test signal is sequentially input to the first signal processing module through the radio frequency input end and the error correction module;

the first signal processing module is used for performing forward processing on the radio frequency test signal to obtain an analog test signal corresponding to the radio frequency test signal;

the second signal processing module is used for carrying out reverse processing on the analog test signal to obtain a feedback test signal corresponding to the radio frequency test signal;

the radio frequency signal correction device is used for determining the initialization correction information of the radio frequency test signal according to the radio frequency test signal and the feedback test signal; and correcting the radio frequency signal input by the radio frequency input end according to the initialization correction information, and transmitting the corrected radio frequency signal through the radio frequency output end.

In still another aspect, an embodiment of the present application provides a method for correcting a radio frequency signal, which is applied to the radio frequency transmitting device in the above aspect, where the method includes:

in the initialization stage of the radio frequency transmitting device, a radio frequency test signal is generated, and the radio frequency test signal is subjected to forward and reverse processing to obtain a feedback test signal corresponding to the radio frequency test signal;

acquiring statistical test information corresponding to the radio frequency test signal and the feedback test signal;

determining quadrature error information of the radio frequency test signal according to the statistical test information;

according to the quadrature error information, initializing and correcting information of the radio frequency transmitting device is determined; the initialization correction information is used for correcting the radio frequency signals input by the radio frequency input end.

In yet another aspect, an embodiment of the present application provides an electronic device, including a processor and a memory electrically connected to the processor, where the memory stores a computer program, and the processor is configured to call and execute the computer program from the memory to implement the radio frequency signal correction method described above.

In yet another aspect, an embodiment of the present application provides a storage medium storing a computer program executable by a processor to implement the above-described radio frequency signal correction method.

By adopting the radio frequency signal correction device provided by the embodiment of the application, the error estimation module in the radio frequency signal correction device can determine the statistical test information of the radio frequency test signal according to the radio frequency test signal and the feedback test signal, determine the orthogonal error information of the radio frequency test signal according to the statistical test information, and determine the initialization correction information of the radio frequency test signal according to the orthogonal error information; the feedback test signal is obtained by performing forward and backward processing on the radio frequency test signal, and an error correction module in the radio frequency signal correction device can correct the input radio frequency signal according to the initialization correction information. Therefore, the radio frequency signal correction device corrects the orthogonal consistency of the radio frequency signals in a digital mode, so that the correction accuracy of the orthogonal consistency is improved, the radio frequency signals input into the radio frequency signal correction device can be corrected based on accurate initialization correction information, and the correction performance of the radio frequency signal correction device is improved.

The radio frequency transmitting device provided by the embodiment of the application comprises a controller, a signal generating module, a first signal processing module, a second signal processing module, a radio frequency input end, a radio frequency output end and a radio frequency signal correcting device, wherein the controller controls the signal generating module to generate a radio frequency test signal, the radio frequency test signal is sequentially input to the first signal processing module through the radio frequency input end and the error correcting module, the radio frequency test signal is subjected to forward processing through the first signal processing module to obtain an analog test signal corresponding to the radio frequency test signal, the second signal processing module is used for carrying out reverse processing on the analog test signal to obtain a feedback test signal corresponding to the radio frequency test signal, and then the radio frequency signal correcting device is used for determining the initialization correcting information of the radio frequency test signal according to the radio frequency test signal and the feedback test signal, so that the radio frequency signal input by the radio frequency input end is corrected according to the initialization correcting information, and the corrected radio frequency signal is transmitted through the radio frequency output end. Therefore, the radio frequency transmitting device realizes correction of the quadrature consistency in the working bandwidth in a digital mode, not only improves the calibration accuracy, but also enables the radio frequency signals input by the radio frequency input end to be corrected based on accurate initialization correction information, thereby improving the performance of the radio frequency transmitting device. In addition, when the initialization correction information is determined, the feedback test signal is obtained through forward and backward processing, and the forward and backward processing process is related to the communication link parameters of the radio frequency transmitting device, so that the orthogonal consistency correction process can be adaptive to related parameters in the communication link, such as the working bandwidth of the current system, so that the orthogonal consistency correction of the radio frequency transmitting device is more flexible, the correction of the orthogonal consistency is not limited by the working bandwidth, and the orthogonal consistency correction is also applicable to the orthogonal consistency correction of the ultra-wideband channel.

Drawings

In order to more clearly illustrate one or more embodiments of the present specification or the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described, and it is apparent that the drawings in the following description are only some embodiments described in one or more embodiments of the present specification, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic block diagram of a radio frequency signal correction apparatus according to an embodiment of the present application;

fig. 2 is a schematic block diagram of an error estimation module in a radio frequency transmitting apparatus according to an embodiment of the present disclosure;

fig. 3 is a schematic block diagram of a radio frequency transmitting apparatus according to an embodiment of the present application;

FIG. 4 is a schematic block diagram of an error correction module in a radio frequency transmitting device according to one embodiment of the present disclosure;

FIG. 5 is a schematic flow chart diagram of a method for correcting a radio frequency signal according to an embodiment of the present disclosure;

Fig. 6 is a schematic block diagram of a radio frequency transmitting apparatus according to an embodiment of the present application;

Fig. 7 is a schematic flow chart of a radio frequency signal correction method according to another embodiment of the present disclosure;

fig. 8 is a schematic flow chart of a radio frequency signal correction method according to still another embodiment of the present disclosure;

fig. 9 is a schematic block diagram of an electronic device in accordance with an embodiment of the present description.

Detailed Description

The embodiment of the application provides a radio frequency signal correction device, a radio frequency signal correction method and a radio frequency transmitting device, which are used for solving the problem of poor error correction effect on radio frequency signal quadrature imbalance in the prior art.

In order to make the technical solution of the present application better understood by those skilled in the art, the technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, shall fall within the scope of the application.

Fig. 1 is a schematic block diagram of a radio frequency signal correction apparatus according to an embodiment of the present application, and as shown in fig. 1, the radio frequency signal correction apparatus includes an error estimation module 11 and an error correction module 12, and the error estimation module 11 and the error correction module 12 are connected to each other.

The error estimation module 11 is configured to determine statistical test information of the radio frequency test signal according to the radio frequency test signal and the feedback test signal, and determine quadrature error information of the radio frequency test signal according to the statistical test information; according to the quadrature error information, initializing and correcting information of the radio frequency test signal is determined; the feedback test signal is obtained by performing forward and backward processing on the radio frequency test signal. The error correction module 12 is configured to correct the input rf signal according to the initialization correction information.

In one embodiment, as shown in FIG. 2, the error estimation module 11 includes a statistics module 111 and an error calculation module 112 that are interconnected.

The statistics module 111 is configured to obtain first statistics information corresponding to the radio frequency test signal and second statistics information corresponding to the feedback test signal; and determining correlation statistical information between the radio frequency test signal and the feedback test signal according to the radio frequency test signal and the feedback test signal. The statistical test signal includes first statistical information, second statistical information, and correlation statistical information.

The error calculation module 112 is configured to determine quadrature error information of the radio frequency test signal according to the statistical test information, and determine initialization correction information of the radio frequency test signal according to the quadrature error information.

In this embodiment, through the interaction between the statistics module 111 and the error calculation module 112, the effect of determining the quadrature error information and the initialization correction information by adopting a digitized calculation mode is achieved, so that the calculation accuracy of the initialization correction information is improved, and the radio frequency signal input into the radio frequency signal correction device can be corrected based on the accurate initialization correction information, thereby improving the correction performance of the radio frequency signal correction device.

In one embodiment, the error estimation module 11 further includes a phase conversion module 113 as shown in fig. 2, and the phase conversion module 113 is connected to the statistics module 111 and the error calculation module 112, respectively. The phase conversion module 113 is configured to correct the quadrature error information, and obtain corrected quadrature error information. The error calculation module 112 is configured to determine initialization correction information of the radio frequency test signal according to the corrected quadrature error information.

In this embodiment, after the error calculation module 112 calculates the quadrature error information, the phase conversion module 113 corrects the quadrature error information, so that the corrected quadrature error information can be more matched with the communication link of the radio frequency signal correction device, and the initialization correction information determined based on the corrected quadrature error information is more suitable for the forward actual compensation of the radio frequency signal correction device.

Fig. 3 is a schematic block diagram of a radio frequency transmitting apparatus according to an embodiment of the present application, and as shown in fig. 3, the radio frequency transmitting apparatus includes a controller 10, a signal generating module 20, a first signal processing module 30, a second signal processing module 40, a radio frequency input terminal 50, a radio frequency output terminal 60, and a radio frequency signal correction device 70. The specific structure of the rf signal correction device 70 is described in detail in the embodiments shown in fig. 1-2 and will not be repeated here.

Wherein, the controller 10 is connected with the signal generating module 20 and the radio frequency signal correction device 70; the signal generating module 20, the error correcting module 12 and the error estimating module 11 are respectively connected with the radio frequency input end 50; the error correction module 12 is connected to the radio frequency output 60 through the first signal processing module 30; the error estimation module 11 is connected to the first signal processing module 30 via a second signal processing module 40.

A controller 10 for controlling the signal generation module 20 to generate a radio frequency test signal; the radio frequency test signal generated by the signal generating module 20 is sequentially input to the first signal processing module 30 through the radio frequency input terminal 50 and the error correcting module 12.

The radio frequency test signal is a quadrature signal. Alternatively, the radio frequency test signal may be a single tone signal.

Alternatively, the test frequency point of the radio frequency transmitting device may be preconfigured. For example, after the controller 10 controls the signal generating module 20 to generate the radio frequency test signal, the radio frequency test signal is input according to a pre-configured test frequency point.

The first signal processing module 30 is configured to perform forward processing on the radio frequency test signal, so as to obtain an analog test signal corresponding to the radio frequency test signal.

The second signal processing module 40 is configured to perform inverse processing on the analog test signal, so as to obtain a feedback test signal corresponding to the radio frequency test signal.

The rf signal calibration device 70 is configured to determine the initialization calibration information of the rf test signal according to the rf test signal and the feedback test signal, and transmit the calibrated rf signal through the rf output terminal 60.

In this embodiment, since the signal flows from the rf input end 50 to the rf output end in the signal transmission link where the first signal processing module 30 is located, the signal transmission link where the first signal processing module 30 is located can be regarded as a forward link (or a forward link), and the processing of the rf test signal by the first signal processing module 30 can be referred to as forward processing. Since the signal in the signal feedback link where the second signal processing module 40 is located flows back from the output of the first signal processing module 30 to the input of the signal transmitting link (i.e., the rf input 50), the signal feedback link where the second signal processing module 40 is located can be regarded as a reverse link, and the processing of the analog test signal by the second signal processing module 40 can be referred to as reverse processing.

Optionally, when the radio frequency signal correction device 70 determines the initialization correction information of the radio frequency test signal according to the radio frequency test signal and the feedback test signal, it may determine the statistical test information corresponding to the radio frequency test signal, then determine the quadrature error information of the radio frequency test signal according to the statistical test information, and then determine the initialization correction information of the radio frequency test signal according to the quadrature error information. The statistical test information corresponding to the radio frequency test signal and the feedback test signal may include at least one of the following: the method comprises the steps of first statistical information corresponding to a radio frequency test signal, second statistical information corresponding to a feedback test signal, correlation statistical information between the radio frequency test signal and the feedback test signal and link parameters of a communication link of a radio frequency transmitting device. The first statistical information and the second statistical information may be understood as information of statistical characteristics of the signal, such as characteristic information of time domain position, amplitude, phase, amplitude, gain, and the like of the signal. The correlation statistical information is used for representing the correlation between the radio frequency test signal and the feedback test signal, and an optional correlation representation mode is as follows: and carrying out convolution calculation on the radio frequency test signal and the feedback test signal, wherein the convolution result is a cross-correlation function of the radio frequency test signal and the feedback test signal, and the size of the cross-correlation function reflects the correlation between the two signals. The communication link includes a signal transmitting link and a signal feedback link, and the link parameters of the communication link refer to related parameters involved in the communication link, such as phase, gain, link rotation of the communication link, and the like corresponding to the first signal processing module 30 and the second signal processing module 40.

The quadrature error information of the radio frequency test signal may include error information related to signal statistics such as amplitude error, phase error, gain error, etc. The initialization correction information corresponds to a signal statistical feature corresponding to the quadrature error information, for example, the quadrature error information includes a phase error, and the corresponding initialization correction information includes a phase compensation value; the quadrature error information includes a gain error and the corresponding initialization correction information includes a gain compensation value.

In one embodiment, the controller 10 is further configured to determine, during a service execution phase of the radio frequency transmitting apparatus, data statistics parameters corresponding to the correction instructions based on the correction instructions for the service data generated during the service execution phase, where the data statistics parameters include a signal delay and a data statistics range.

The error estimation module 11 is further configured to obtain target service data generated in the service execution stage according to the data statistics parameter; detecting the data state of the target service data to obtain a detection result; and determining data correction information corresponding to the target service data according to the detection result.

The error correction module 12 is further configured to correct the service data generated in the service execution stage according to the data correction information.

Wherein, the controller 10 may issue a correction instruction for the service data according to a pre-configured data correction rule, which may include a correction frequency or a correction time, etc. Alternatively, the correction instruction may be manually initiated by the user, and when the user manually initiates the correction instruction, the controller 10 determines the corresponding data statistics based on the correction instruction.

The signal delay included in the data statistics parameters is input to an error estimation module 11, and the error estimation module 11 detects the data state of the target service data based on the signal delay. For example, if the pre-configured signal delay is 10 ms, the error estimation module 11 detects the data state of the target service data 10 ms after responding to the correction instruction. The reason for this is that, since there is a time delay when the service data passes through the communication link, that is, there is a time delay when the error estimation module 11 acquires the target service data generated in the service execution stage, by pre-configuring the signal time delay, the error estimation module 11 can ensure that the complete target service data is acquired when the data state is detected, thereby further ensuring the accuracy of the data state detection.

The data statistics range may include data length, time domain location where the data is located, and the like. Taking the data statistical range as an example of the data length, assuming that the data length to be acquired is 2 ¹⁵ bits, the orthogonal error estimation module 41 acquires the target service data with the data length of 2 ¹⁵ bits after responding to the correction instruction. And further detecting the data state of the obtained target service data with the data length of 2 ¹⁵ bits.

The data state of the target traffic data may include a data power value, a threshold value, etc. In the service execution stage of the radio frequency transmitting device, the data state of the service data accords with a preset state range, and if the data state of the service data is not in the preset state range, the data state of the service data is considered to be abnormal or the data state error is larger. For example, a data threshold range of the service data is preset, when the data state of the target service data is detected, whether the data threshold of the target service data is within the preset data threshold range can be judged, if not, the data state of the target service data is abnormal or the data state error is larger, and further, the error of the service data generated in the service execution stage can be determined. At this time, the data correction information corresponding to the target service data may be determined by the error estimation module 11 and transmitted to the error correction module 12, and the service data generated in the service execution stage may be corrected by the error correction module 12 based on the data correction information.

In this embodiment, in the service execution stage of the radio frequency transmitting device, the error estimation module 11 acquires the target service data generated in the service execution stage, detects the data state of the target service data, further determines the data correction information corresponding to the target service data according to the detection result, and corrects the service data generated in the service execution stage by the error correction module 12, thereby realizing the effect of correcting the data error in the service execution stage in real time by adopting a digitalized manner, and further improving the service processing performance of the radio frequency transmitting device.

In one embodiment, as shown in FIG. 4, error correction module 12 includes an initialization correction filter bank 121 and a traffic correction filter bank 122.

The error estimation module 11 is further configured to, in a case where the initialization correction information includes a first complex filter coefficient, convert the first complex filter coefficient into a first real filter coefficient, and write the first real filter coefficient into the initialization correction filter bank 121; in the case where the data correction information includes a second complex filter coefficient, the second complex filter coefficient is converted into a second real filter coefficient, and the second real filter coefficient is written to the service correction filter bank 122.

The correction filter bank 121 is initialized to correct the radio frequency signal input by the radio frequency input terminal based on the first real number filter coefficient.

A service correction filter bank 122 for correcting service data generated in the service execution stage based on the second real number filter coefficient.

In the present embodiment, the initialization correction filter bank 121 and the service correction filter bank 122 each include four sets of real filters. Since the result (including the initialization correction information or the data correction information) obtained by fitting by the error estimation module 11 is a complex filter coefficient, the complex filter coefficient can be converted into four sets of real filter coefficients in consideration of the fact that the actual working system is two-way real numbers I and Q.

In an embodiment, the signal feedback link of the radio frequency transmitting device is provided with a switching assembly, which may be arranged at any position in the signal feedback link, such as between the second signal processing module 40 and the error estimation module 11, between the output of the first signal processing module 30 and the input of the second signal processing module 40, etc. The signal feedback link of the radio frequency transmitting device is a link formed by the second signal processing module 40 and the error estimating module 11.

The controller 10 is further configured to control the switch assembly to be closed during an initialization phase of the radio frequency transmitting device; and after determining the initialization correction information, controlling the switch assembly to be turned off.

Optionally, the controller 10 is further configured to control the switch assembly to be closed during a service execution phase of the radio frequency transmitting device; and after determining the data correction information, controlling the switch assembly to be turned off.

In this embodiment, by controlling the opening or closing of the switch component to control the opening or closing of the signal feedback link, when the radio frequency transmitting device needs to perform the initialization correction of the quadrature consistency or the service data correction, the quadrature consistency correction can be performed through the signal feedback link in the on state. Meanwhile, when the initialization correction of the orthogonal consistency or the service data correction is not needed, the signal feedback link is disconnected, so that the radio frequency transmitting device can normally process the service, is not interfered by the signal feedback, and saves unnecessary resource consumption.

Fig. 5 is a schematic flow chart of a radio frequency signal correction method according to an embodiment of the application. As shown in fig. 5, the radio frequency signal correction method is applied to the radio frequency transmitting device according to the above embodiment, and includes the following steps:

S502, in the initialization stage of the radio frequency transmitting device, a radio frequency test signal is generated, and the radio frequency test signal is subjected to forward and reverse processing to obtain a feedback test signal corresponding to the radio frequency test signal.

The radio frequency test signal is a quadrature signal. Alternatively, the radio frequency test signal may be a single tone signal. The test frequency points of the radio frequency transmitting device may be preconfigured, and may include one or more test frequency points. For example, after the radio frequency test signal is generated, the radio frequency test signal is input according to a pre-configured test frequency point.

S504, acquiring statistical test information corresponding to the radio frequency test signal and the feedback test signal.

The statistical test information corresponding to the radio frequency test signal and the feedback test signal may include at least one of the following: the method comprises the steps of first statistical information corresponding to a radio frequency test signal, second statistical information corresponding to a feedback test signal, correlation statistical information between the radio frequency test signal and the feedback test signal and link parameters of a communication link in a radio frequency transmitting device. The first statistical information and the second statistical information may be understood as information of statistical characteristics of the signal, such as characteristic information of time domain position, amplitude, phase, amplitude, gain, and the like of the signal. The correlation statistical information is used for representing the correlation between the radio frequency test signal and the feedback test signal, and an optional correlation representation mode is as follows: and carrying out convolution calculation on the radio frequency test signal and the feedback test signal, wherein the convolution result is a cross-correlation function of the radio frequency test signal and the feedback test signal, and the size of the cross-correlation function reflects the correlation between the two signals. The communication link includes a signal transmitting link and a signal feedback link, and the link parameters of the communication link refer to related parameters involved in the communication link, such as phase, gain, link rotation of the communication link, and the like corresponding to the first signal processing module and the second signal processing module.

S506, determining quadrature error information of the radio frequency test signal according to the statistical test information.

The quadrature error information of the radio frequency test signal may include error information related to signal statistics, such as amplitude error, phase error, gain error, etc.

S508, according to the orthogonal error information, determining initialization correction information of the radio frequency transmitting device; the initialization correction information is used for correcting the radio frequency signal input by the radio frequency input end.

The initialization correction information corresponds to a signal statistical feature corresponding to the quadrature error information, for example, the quadrature error information includes a phase error, and the corresponding initialization correction information includes a phase compensation value; the quadrature error information includes a gain error and the corresponding initialization correction information includes a gain compensation value.

By adopting the technical scheme provided by the embodiment of the application, the radio frequency test signal is generated in the initialization stage of the radio frequency transmitting device, and the radio frequency test signal is subjected to forward and reverse processing to obtain the feedback test signal corresponding to the radio frequency test signal; acquiring statistical test information corresponding to the radio frequency test signal and the feedback test signal, determining quadrature error information and initialization correction information of the radio frequency test signal according to the statistical test information, and correcting the radio frequency signal input by the radio frequency input end by using the quadrature error correction module. Therefore, in the technical scheme, in the initialization stage of the radio frequency transmitting device, the orthogonal consistency correction process in the working bandwidth is realized in a digital mode, so that the calibration accuracy is improved, and when the radio frequency transmitting device is in the working stage, the radio frequency signal input by the radio frequency input end can be corrected based on accurate initialization correction information, and the performance of the radio frequency transmitting device is improved. In addition, when the orthogonal error information and the initialization correction information are determined, the feedback test signal is obtained through forward and backward processing, and the forward and backward processing process is related to the communication link parameters of the radio frequency transmitting device, so that the orthogonal consistency correction process can adapt to related parameters in the communication link, such as the working bandwidth of the current system, thereby the orthogonal consistency correction of the radio frequency transmitting device is more flexible, and the correction of the orthogonal consistency is not limited by the working bandwidth any more, so that the orthogonal consistency correction of the ultra-wideband channel is also applicable.

In one embodiment, the statistical test information includes first statistical information corresponding to the radio frequency test signal, second statistical information corresponding to the feedback test signal, correlation statistical information between the radio frequency test signal and the feedback test signal, and link parameters of a communication link in the radio frequency transmitting device. Based on this, when acquiring the statistical test information corresponding to the radio frequency test signal and the feedback test signal, the method may specifically be performed as follows:

first, first statistical information corresponding to a radio frequency test signal and second statistical information corresponding to a feedback test signal are obtained.

The first statistical information is information of signal statistical characteristics of the radio frequency test signal, such as time domain position, amplitude, phase, amplitude, gain and other characteristic information of the radio frequency test signal. The second statistical information is information of signal statistical characteristics of the feedback test signal, such as characteristic information of time domain position, amplitude, phase, amplitude, gain and the like of the feedback test signal.

Alternatively, a signal range corresponding to the statistical information to be acquired may be preconfigured, and the signal range may include a signal time domain length, a signal time domain position, and the like. In the case of pre-configured signal ranges, the statistical information may be obtained by taking the mean value of the corresponding signal. For example, the signal time domain length of the radio frequency test signal corresponding to the statistical information to be obtained is preset to be 10 ms, after the radio frequency test signal is input, a section of radio frequency test signal with the signal time domain length of 10 ms is obtained, the information of the signal statistical characteristics of the obtained part of radio frequency test signal, such as the amplitude of the part of radio frequency test signal, is determined, and then the average value calculation is performed on the amplitude of the part of radio frequency test signal, so that the first statistical information corresponding to the radio frequency test signal can be obtained. The second statistical information is obtained in a similar manner to the first statistical information, and will not be described in detail here.

And secondly, according to the radio frequency test signal and the feedback test signal, determining correlation statistical information between the radio frequency test signal and the feedback test signal, and determining signal link parameters of the radio frequency transmitting device.

In this step, the signal link parameter of the radio frequency transmitting device is the link parameter of the communication link of the radio frequency transmitting device. When correlation statistics between the radio frequency test signal and the feedback test signal are determined, calculation can be performed for the radio frequency test signal and the feedback test signal within the same signal range. The same signal range refers to signals having the same signal time domain length, the same signal time domain position, and the like. For example, if the signal time domain length corresponding to the statistical information to be obtained is preset to be 10 ms, correlation calculation (such as convolution calculation) can be performed on the obtained radio frequency test signal and the feedback test signal of 10 ms, so as to obtain correlation statistical information between the radio frequency test signal and the feedback test signal.

After the statistical test information is obtained, the quadrature error information of the radio frequency test signal is determined according to the statistical test information. Referring to the radio frequency transmitting apparatus shown in fig. 3, the link composed of the first signal processing module 30, the error correction module 12 and the radio frequency input terminal 50 is a signal transmitting link, and the link composed of the second signal processing module 40 and the error estimation module 11 is a signal feedback link. Equation (1) exemplifies a calculation method of the quadrature error information.

In formula (1), E represents statistical information, T _i、T_q represents I-way and Q-way signals of the signal transmission link, F _i、F_q represents I-way and Q-way signals of the signal feedback link, E (T _iF_i) represents statistical information of correlation between I-way signals of the signal transmission link and I-way signals of the signal feedback link, E (T _iF_q) represents statistical information of correlation between I-way signals of the signal transmission link and Q-way signals of the signal feedback link, E (T _qF_i) represents statistical information of correlation between Q-way signals of the signal transmission link and I-way signals of the signal feedback link, and E (T _qF_q) represents statistical information of correlation between Q-way signals of the signal transmission link and Q-way signals of the signal feedback link, respectively. E (F _iF_i) represents the autocorrelation statistical information of the I-path signal of the signal feedback link, E (F _iF_q) represents the correlation statistical information between the I-path signal and the Q-path signal of the signal feedback link, E (F _qF_i) 0 represents the correlation statistical information E (F _qF_q) between the Q-path signal and the I-path signal of the signal feedback link, and Q-path signal of the signal feedback link.

In one embodiment, after determining the quadrature error information of the radio frequency test signal according to the statistical test information, the quadrature error information may be corrected to obtain corrected quadrature error information. Thereby determining initialization correction information based on the corrected quadrature error information.

Taking the quadrature error information as an example, the gain error g and the phase error oc. In the case where there is an orthogonal imbalance in the communication link of the radio frequency transmitting apparatus, assuming that s (t) is a transmitted undistorted IQ signal (i.e., a quadrature signal), the signal may be expressed as the following equation (2) after passing through the communication link.

s′(t)＝ms(t)+ns^*(t)； (2)

Where s' (t) represents a distorted signal having an orthogonal imbalance, m is an actual gain error, and n is an actual phase error. s ^* (t) is the conjugate of the signal s (t).

Considering that the IQ signal may not match the communication link due to the link parameters (such as link rotation) in the communication link, the gain error and the phase error calculated by the quadrature error estimation module may need to be corrected. The following equation (3) exemplarily shows a correction manner of the quadrature error information.

m＝cos(∝/2)+j*g*sin(∝/2)；

n＝g*cos(∝/2)-j*sin(∝/2)； (3)

In the formula (3), m is the corrected gain error, and n is the corrected phase error.

In this embodiment, after the quadrature error information is calculated, the quadrature error information is corrected, so that the corrected quadrature error information can be more matched with the communication link of the radio frequency transmitting device, and the initialization correction information determined based on the corrected quadrature error information is more suitable for forward actual compensation of the radio frequency transmitting device.

In one embodiment, N test bins are preconfigured, N being an integer greater than 1. Based on this, when the radio frequency test signal is input to the signal transmitting link, the current test frequency point can be determined from the N test frequency points configured in advance, and the radio frequency test signal is input to the radio frequency input terminal 50 of the radio frequency transmitting device according to the current test frequency point. Optionally, one test frequency point may be sequentially selected as the current test frequency point according to the order of the N test frequency points. After the radio frequency test signal is input to the radio frequency input end 50 according to the current test frequency point, corresponding statistical test information is obtained. And judging whether the statistical test information corresponding to the N test frequency points is acquired or not, namely judging whether the statistical test information corresponding to all the test frequency points is acquired or not. If not, inputting a radio frequency test signal according to the next test frequency point of the current test frequency point, and acquiring statistical test information corresponding to the next test frequency point. Until the statistical test information corresponding to all the test frequency points is obtained.

In this embodiment, by pre-configuring a plurality of test frequency points, inputting a radio frequency test signal for each test frequency point, and acquiring corresponding statistical test information, the statistical test information in the initialization correction process is more comprehensive, and the determination result of the initialization correction information is further more accurate.

In one embodiment, in a service execution phase of the radio frequency transmitting apparatus, in response to a correction instruction for service data generated in the service execution phase, data statistics parameters corresponding to the correction instruction are determined, the data statistics parameters including signal delay and data statistics range. And then, acquiring target service data generated in the service execution stage according to the data statistics parameters, and detecting the data state of the target service data to obtain a detection result. Further, data correction information corresponding to the target service data is determined based on the detection result, the data correction information being used for correcting the service data generated in the service execution stage.

In this embodiment, since there is a time delay when the service data passes through the communication link, that is, there is a time delay when the orthogonal error estimation module acquires the target service data generated in the service execution stage, by pre-configuring the signal time delay, the error estimation module 11 can ensure that the complete target service data is acquired when the data state is detected, thereby further ensuring the accuracy of detecting the data state. For example, if the pre-configured signal delay is 10 ms, the data state of the target service data is detected 10 ms after responding to the correction instruction.

The data statistics range may include data length, time domain location where the data is located, and the like. Taking the data statistical range as an example of the data length, assuming that the data length to be acquired is 2 ¹⁵ bits in advance, after responding to the correction instruction, the target service data with the data length of 2 ¹⁵ bits is acquired. And further detecting the data state of the obtained target service data with the data length of 2 ¹⁵ bits.

The data state of the target traffic data may include a data power value, a threshold value, etc. In the service execution stage of the radio frequency transmitting device, the data state of the service data accords with a preset state range, and if the data state of the service data is not in the preset state range, the data state of the service data is considered to be abnormal or the data state error is larger. For example, a data threshold range of the service data is preset, when the data state of the target service data is detected, whether the data threshold of the target service data is within the preset data threshold range can be judged, if not, the data state of the target service data is abnormal or the data state error is larger, and further, the error of the service data generated in the service execution stage can be determined. At this time, the service data generated in the service execution stage may be corrected by determining the data correction information corresponding to the target service data, and based on the data correction information.

In this embodiment, in the service execution stage of the radio frequency transmitting device, by acquiring the target service data generated in the service execution stage, detecting the data state of the target service data, further determining the data correction information corresponding to the target service data according to the detection result, and correcting the service data generated in the service execution stage based on the data correction information, the effect of correcting the data error in the service execution stage in real time by adopting a digitalized manner is achieved, so that the service processing performance of the radio frequency transmitting device is improved.

In one embodiment, the control signal feedback link may be turned on during an initialization phase of the radio frequency transmitting device; and after determining the initialization correction information, the control signal feedback link is disconnected. The signal feedback link is a link formed by the second signal processing module 40 and the error estimation module 11.

In addition, the control signal feedback link can be conducted in the service execution stage of the radio frequency transmitting device; and after determining the data correction information, the control signal feedback link is disconnected.

In this embodiment, by controlling the disconnection or connection of the signal feedback link, when the radio frequency transmitting device needs to perform the initialization correction of the orthogonality or the service data correction, the orthogonality correction can be performed through the signal feedback link in the on state. Meanwhile, when the initialization correction of the orthogonal consistency or the service data correction is not needed, the signal feedback link is disconnected, so that the radio frequency transmitting device can normally process the service, is not interfered by the signal feedback, and saves unnecessary resource consumption.

The following describes a radio frequency transmitting apparatus and a radio frequency signal correction method according to embodiments of the present application.

Fig. 6 is a schematic block diagram of a radio frequency transmitting apparatus according to an embodiment of the present application. In this embodiment, the radio frequency test signal and the radio frequency signal are both orthogonal signals, so that the error correction module is an orthogonal error correction module, and the error estimation module is an orthogonal error estimation module. As shown in fig. 6, the radio frequency transmitting apparatus includes a controller (not shown in fig. 6), and a signal generating module 150, a signal transmitting link, and a signal feedback link, which are respectively connected to the controller; the signal transmitting link includes a radio frequency input end (i.e., an input signal end shown in fig. 6), an orthogonal error correction module 145, a first signal processing module, a radio frequency band-pass Filter 110 (RF Filter), a power amplifier 105 (RA), and a radio frequency output end, which are sequentially connected, and the radio frequency input end includes I, Q paths. The first signal processing module includes a DAC (Digital-to-AnalogConverter ) 125, a low-pass filter 120, and a local oscillator modulator 115, which are connected in sequence. The signal feedback link includes a second signal processing module and a quadrature error estimation module 155 connected in sequence. The second signal processing module includes a local oscillator modulator 130, a low pass filter 135, an ADC140, a digital frequency converter 160, and an NCO (Numerically Controlled Oscillator, digitally controlled oscillator) 165, which are connected in sequence. An output terminal of the local oscillator modulator 115 is connected to an input terminal of the local oscillator modulator 130, one output terminal of the quadrature error estimation module 155 is connected to the quadrature error correction module 145, and two paths I, Q of radio frequency input terminals are respectively connected to the quadrature error estimation module 155. The internal structure of the quadrature error estimation module 155 can be seen in fig. 3, and the internal structure of the quadrature error correction module 145 can be seen in fig. 4.

In the radio frequency transmitting apparatus shown in fig. 6, the baseband I, Q digital signal is digitally processed, then compensated (i.e. corrected) by the quadrature error correction module 145, and then converted into an analog signal by the DAC125, the analog signal is modulated by the low-pass filter 120, then transmitted to the radio frequency band-pass filter 110 by the local oscillator modulator 115, amplified by the power amplifier 105, and transmitted through the radio frequency output terminal.

If the quadrature consistency calibration in the initialization phase is required, in the initialization phase, a radio frequency test signal is generated by the signal generator 150, after passing through the local oscillator modulator 115 in the signal transmitting link, one path of signal is amplified by the power amplifier 105 and transmitted, the other path of signal is looped back through the signal feedback link, specifically, the signal is demodulated by the local oscillator modulator 130 to obtain a baseband I, Q analog signal, the baseband I, Q analog signal is passed through the low-pass filter 135, sampled by the ADC140 to obtain a digital baseband signal, and the digital baseband signal is processed by the digital frequency converter 160 and the NCO165 and then transmitted to the quadrature error estimation module 155.

In the radio frequency transmitting apparatus provided in this embodiment, the signal transmitting link and the signal feedback link may configure different local oscillators, that is, local oscillation frequencies corresponding to the local oscillation modulator 115 and the local oscillation modulator 130 are different. In this way, the quadrature error estimation module 155 can determine which path of signal is the received signal according to the local oscillation frequency in the process of obtaining the statistical test signal, for example, the radio frequency test signal transmitted by the signal transmitting link or the feedback test signal transmitted by the signal feedback link.

Fig. 7 is a schematic flow chart of a method for correcting a radio frequency signal according to an embodiment of the application. The method is applied to the radio frequency transmitting device shown in fig. 6, and comprises the steps as shown in fig. 7:

S701, initializing the radio frequency transmitting device, and controlling the signal feedback link to be conducted by the controller.

S702, the controller determines a plurality of single-tone test frequency points and configures signal delay to be zero.

Because the initialization stage of the radio frequency transmitting device does not involve the processing of service data, the signal delay is not required to be considered, and the orthogonal error estimation module can directly calculate the orthogonal error information after acquiring the statistical test signal by configuring the signal delay to be zero.

S703, determining a current test frequency point to be counted according to a preset single-tone test frequency point, and inputting a radio frequency test signal according to the current test frequency point; and carrying out forward and reverse processing on the radio frequency test signal to obtain a feedback test signal corresponding to the radio frequency test signal.

Wherein the radio frequency test signal is generated by the signal generation module. The manner of processing the rf test signal in the forward and backward directions is described in the above embodiments, and is not repeated here.

S704, the statistical module acquires statistical test information corresponding to the radio frequency test signal and the feedback test signal.

Wherein the statistical test information may include at least one of: the method comprises the steps of first statistical information corresponding to a radio frequency test signal, second statistical information corresponding to a feedback test signal, correlation statistical information between the radio frequency test signal and the feedback test signal and link parameters of a communication link in a radio frequency transmitting device. The detailed acquisition manner of the statistical test information is described in the above embodiments, and is not described herein.

S705, the controller judges whether the sweep frequency statistics work of all the single-tone test frequency points is completed. If yes, executing S706; if not, the process returns to S703.

In the step, the sweep frequency statistics work of all the single-tone test frequency points is completed, namely, the statistics test information corresponding to each single-tone test frequency point is obtained aiming at a plurality of pre-configured single-tone test frequency points. Specifically, every time a radio frequency test signal is sequentially input according to a single-tone test frequency point, statistics test information corresponding to the single-tone test frequency point is counted, then a next single-tone test frequency point is determined from a plurality of single-tone test frequency points, the statistics test information corresponding to the next single-tone test frequency point is obtained based on the next single-tone test frequency point input radio frequency test signal until statistics test information corresponding to all the single-tone test frequency points is obtained, and at the moment, sweep frequency statistics work of all the single-tone test frequency points can be determined to be completed.

The orthogonal error estimation module is connected with the controller, so that the statistical test information acquired by the statistical module can be reported to the controller, and the controller judges whether the sweep frequency statistical work of all the single-tone test frequency points is completed or not. If so, the controller triggers the quadrature error estimation module to execute S706.

S706, the error calculation module determines quadrature error information of the radio frequency test signal according to the statistical test information, and transmits the quadrature error information to the phase conversion module.

In this embodiment, since statistical test information corresponding to a plurality of single-tone test frequency points is counted, quadrature error information of radio frequency test signals corresponding to each single-tone test frequency point can be determined respectively for the statistical test information corresponding to each single-tone test frequency point.

S707, the phase conversion module corrects the quadrature error information and transmits the corrected quadrature error information to the error calculation module.

If the quadrature error information includes a phase error and a gain error, the phase error and the gain error may be corrected based on the formula (3) in the above embodiment, thereby obtaining a corrected phase error and gain error.

S708, the error calculation module determines initialization correction information of the radio frequency transmitting device according to the corrected quadrature error information, and transmits the initialization correction information to the quadrature error correction module.

In this embodiment, since each single-tone test frequency point corresponds to the respective orthogonal error information, the initialization correction information corresponding to each single-tone test frequency point can be determined for the orthogonal error information corresponding to each single-tone test frequency point.

S709, the controller controls the signal feedback link to be disconnected.

After the error calculation module transmits the initialization correction information to the quadrature error correction module, the quadrature error correction module may correct (or compensate) the radio frequency signal input by the radio frequency input terminal based on the initialization correction information. For the initialization correction information corresponding to each single-tone test frequency point, the radio frequency signals sent by the corresponding frequency points can be corrected based on the initialization correction information corresponding to different single-tone test frequency points.

In this embodiment, the correction of the quadrature consistency in the initialization stage of the radio frequency transmitting device is performed, and after the correction is completed, the radio frequency transmitting device can be enabled to recover the external configuration by disconnecting the signal feedback link, so that the normal service processing of the radio frequency transmitting device is not affected.

By adopting the technical scheme provided by the embodiment of the application, the radio frequency test signal (the radio frequency test signal is a quadrature signal) is generated in the initialization stage of the radio frequency transmitting device, and the radio frequency test signal is subjected to forward and reverse processing to obtain the feedback test signal corresponding to the radio frequency test signal; acquiring statistical test information corresponding to the radio frequency test signal and the feedback test signal, determining quadrature error information and initialization correction information of the radio frequency test signal according to the statistical test information, and correcting the radio frequency signal input by the radio frequency input end by using the quadrature error correction module. Therefore, in the technical scheme, in the initialization stage of the radio frequency transmitting device, the orthogonal consistency correction process in the working bandwidth is realized in a digital mode, so that the calibration accuracy is improved, and when the radio frequency transmitting device is in the working stage, the radio frequency signal input by the radio frequency input end can be corrected based on accurate initialization correction information, and the performance of the radio frequency transmitting device is improved. In addition, when the orthogonal error information and the initialization correction information are determined, the feedback test signal is obtained through forward and backward processing, and the forward and backward processing process is related to the communication link parameters of the radio frequency transmitting device, so that the orthogonal consistency correction process can adapt to related parameters in the communication link, such as the working bandwidth of the current system, thereby the orthogonal consistency correction of the radio frequency transmitting device is more flexible, and the correction of the orthogonal consistency is not limited by the working bandwidth any more, so that the orthogonal consistency correction of the ultra-wideband channel is also applicable.

Fig. 8 is a schematic flow chart of a radio frequency signal correction method according to another embodiment of the present application. The method is applied to the radio frequency transmitting device shown in fig. 6, and comprises the steps as shown in fig. 8:

s801, in the service execution stage of the radio frequency transmitting device, the controller sends out a correction instruction for service data generated in the service execution stage, and controls the signal feedback link to be conducted.

Optionally, if the controller does not control the signal feedback link to be disconnected after the initial calibration of the radio frequency transmitting device, the signal feedback link is not required to be controlled to be connected again when entering the service execution stage of the radio frequency transmitting device.

S802, the controller determines data statistical parameters corresponding to the correction instruction and writes the data statistical parameters into the statistical module.

The data statistics parameters comprise signal time delay, data statistics range and data statistics group number. The data statistics range may include data length, time domain location where the data is located, and the like. The data statistics may also be understood as the number of acquisitions of the target service data to be acquired.

S803, the statistics module obtains target business data generated in the business execution stage based on the data statistics range.

In this embodiment, since there is a time delay when the service data passes through the communication link, that is, there is a time delay when the orthogonal error estimation module acquires the target service data generated in the service execution stage, by pre-configuring the signal time delay, the orthogonal error estimation module can ensure that the complete target service data is acquired when the data state is detected, thereby further ensuring the accuracy of detecting the data state. For example, if the pre-configured signal delay is 10 ms, the data state of the target service data is detected 10 ms after responding to the correction instruction.

Taking the data statistical range as an example of the data length, assuming that the data length to be acquired is 2 ¹⁵ bits in advance, after responding to the correction instruction, the target service data with the data length of 2 ¹⁵ bits is acquired. And further detecting the data state of the obtained target service data with the data length of 2 ¹⁵ bits.

S804, the controller judges whether the statistic module has completed acquisition of the target service data according to the preset data statistic group number. If yes, executing S805; if not, the process returns to S803.

In this step, the statistics module has completed acquiring the target service data, which means that the statistics module has acquired the target service data according with the data statistics group number. For example, the number of the pre-configured data statistics groups is 10, and after the statistics module acquires 10 groups of target service data, it is determined that the statistics module has completed acquiring the target service data.

S805, the error calculation module detects the data state of the target service data, determines the data correction information corresponding to the target service data according to the detection result, and transmits the data correction information to the orthogonal error correction module.

The data state of the target service data may include a data power value, a threshold value, and the like. In the service execution stage of the radio frequency transmitting device, the data state of the service data accords with a preset state range, and if the data state of the service data is not in the preset state range, the data state of the service data is considered to be abnormal or the data state error is larger. For example, a data threshold range of the service data is preset, when the data state of the target service data is detected, whether the data threshold of the target service data is within the preset data threshold range can be judged, if not, the data state of the target service data is abnormal or the data state error is larger, and further, the error of the service data generated in the service execution stage can be determined.

S806, the quadrature error correction module corrects the service data generated in the service execution stage based on the data correction information.

By adopting the technical scheme provided by the embodiment of the application, in the service execution stage of the radio frequency transmitting device, the target service data generated in the service execution stage is acquired, the data state of the target service data is detected, the data correction information corresponding to the target service data is further determined according to the detection result, and the service data generated in the service execution stage is corrected based on the data correction information, so that the effect of correcting the data error in the service execution stage in real time in a digital manner is realized, and the service processing performance of the radio frequency transmitting device is improved.

In summary, particular embodiments of the present subject matter have been described. Other embodiments are within the scope of the following claims. In some cases, the actions recited in the claims can be performed in a different order and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may be advantageous.

Based on the same thought, the embodiment of the application also provides electronic equipment, as shown in fig. 9. The electronic device may vary considerably in configuration or performance and may include one or more processors 901 and memory 902, where the memory 902 may store one or more stored applications or data. Wherein the memory 902 may be transient storage or persistent storage. The application programs stored in the memory 902 may include one or more modules (not shown), each of which may include a series of computer-executable instructions for use in an electronic device. Still further, the processor 901 may be arranged to communicate with the memory 902 and execute a series of computer executable instructions in the memory 902 on an electronic device. The electronic device may also include one or more power supplies 903, one or more wired or wireless network interfaces 904, one or more input output interfaces 905, and one or more keyboards 906.

In particular, in this embodiment, an electronic device includes a memory, and one or more programs, where the one or more programs are stored in the memory, and the one or more programs may include one or more modules, and each module may include a series of computer-executable instructions for the electronic device, and the one or more programs configured to be executed by one or more processors include instructions for:

The embodiments of the present application also provide a storage medium storing one or more computer programs, the one or more computer programs including instructions that, when executed by an electronic device including a plurality of application programs, enable the electronic device to perform the processes of the above-described correction method embodiments of radio frequency signals, and specifically configured to perform:

The system, apparatus, module or unit set forth in the above embodiments may be implemented in particular by a computer chip or entity, or by a product having a certain function. One typical implementation is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

For convenience of description, the above devices are described as being functionally divided into various units, respectively. Of course, the functions of each element may be implemented in the same piece or pieces of software and/or hardware when implementing the present application.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.

Claims

1. A radio frequency signal correction apparatus, comprising:

2. The apparatus of claim 1, wherein the error estimation module comprises a statistics module and an error calculation module connected to each other;

The statistics module is used for acquiring first statistics information corresponding to the radio frequency test signal and second statistics information corresponding to the feedback test signal; determining correlation statistical information between the radio frequency test signal and the feedback test signal according to the radio frequency test signal and the feedback test signal; wherein the statistical test signal comprises the first statistical information, the second statistical information and the correlation statistical information;

The error calculation module is used for determining quadrature error information of the radio frequency test signal according to the statistical test information and determining initialization correction information of the radio frequency test signal according to the quadrature error information.

3. The apparatus of claim 2, wherein the error estimation module further comprises a phase conversion module;

The phase conversion module is respectively connected with the statistics module and the error calculation module and is used for correcting the quadrature error information to obtain corrected quadrature error information;

The error calculation module is further configured to determine the initialization correction information according to the corrected orthogonal error information.

4. A radio frequency transmitting device, characterized by comprising a controller, a signal generating module, a first signal processing module, a second signal processing module, a radio frequency input end, a radio frequency output end and the radio frequency signal correction device according to claims 1-3; the controller is connected with the signal generating module and the radio frequency signal correcting device; the signal generating module, the error correcting module and the error estimating module are respectively connected with the radio frequency input end; the error correction module is connected to the radio frequency output end through the first signal processing module; the error estimation module is connected to the first signal processing module through the second signal processing module;

5. The apparatus of claim 4, wherein the controller is further configured to, during a service execution phase of the radio frequency transmitting apparatus, determine a data statistics parameter corresponding to a correction instruction based on the correction instruction for service data generated during the service execution phase; the data statistics parameters comprise signal time delay and data statistics range;

The error estimation module is further configured to obtain target service data generated in the service execution stage according to the data statistics parameter; detecting the data state of the target service data to obtain a detection result; determining data correction information corresponding to the target service data according to the detection result;

the error correction module is further configured to correct the service data generated in the service execution stage according to the data correction information.

6. The apparatus of claim 5, the error correction module comprising an initialization correction filter bank and a traffic correction filter bank;

The error estimation module is further configured to, if the initialization correction information includes a first complex filter coefficient, convert the first complex filter coefficient into a first real filter coefficient, and write the first real filter coefficient into the initialization correction filter bank; converting the second complex filter coefficients into second real filter coefficients and writing the second real filter coefficients into the service correction filter bank, in case the data correction information comprises second complex filter coefficients;

The initialization correction filter bank is used for correcting the radio frequency signal input by the radio frequency input end based on the first real number filter coefficient;

The service correction filter bank is configured to correct the service data generated in the service execution stage based on the second real number filter coefficient.

7. The device according to claim 4, wherein the signal feedback link of the radio frequency transmitting device is provided with a switching assembly; the signal feedback link is a link formed by the second signal processing module and the error estimation module;

the controller is further used for controlling the switch assembly to be closed in an initialization stage of the radio frequency transmitting device; and after determining the initialization correction information, controlling the switching assembly to be turned off.

8. A method of radio frequency signal correction, applied to a radio frequency transmitting device according to any one of claims 4-7, the method comprising:

9. The method of claim 8, wherein the obtaining statistical test information corresponding to the radio frequency test signal and the feedback test signal comprises:

acquiring first statistical information corresponding to the radio frequency test signal and second statistical information corresponding to the feedback test signal;

According to the radio frequency test signal and the feedback test signal, determining correlation statistical information between the radio frequency test signal and the feedback test signal, and determining signal link parameters of the radio frequency transmitting device;

wherein the statistical test signal comprises the first statistical information, the second statistical information, the correlation statistical information and the signal link parameter.

10. The method of claim 9, wherein after determining quadrature error information for the radio frequency test signal based on the statistical test information, the method further comprises:

correcting the quadrature error information to obtain corrected quadrature error information;

the determining the initialization correction information of the radio frequency transmitting device according to the quadrature error information comprises the following steps:

and determining the initialization correction information according to the corrected quadrature error information.

11. The method of claim 8, wherein after generating a radio frequency test signal during an initialization phase of the radio frequency transmitting device, the method further comprises:

Determining a current test frequency point from N preset test frequency points, and inputting the radio frequency test signal to the radio frequency input end according to the current test frequency point; n is an integer greater than 1;

the obtaining the statistical test information corresponding to the radio frequency test signal and the feedback test signal includes:

Judging whether the statistical test information corresponding to the N test frequency points is acquired or not;

If not, inputting the radio frequency test signal according to the next test frequency point of the current test frequency point, and acquiring the statistical test information corresponding to the next test frequency point.

12. The method of claim 8, wherein the method further comprises:

In the initialization stage of the radio frequency transmitting device, a control signal feedback link is conducted; the signal feedback link is a link formed by the second signal processing module and the error estimation module;

after determining the initialization correction information, the signal feedback link is controlled to be disconnected.

13. The method of claim 8, wherein the method further comprises:

in a service execution stage of the radio frequency transmitting device, determining a data statistical parameter corresponding to a correction instruction based on the correction instruction of service data generated in the service execution stage; the data statistics parameters comprise signal time delay and data statistics range;

acquiring target service data generated in the service execution stage according to the data statistics parameters;

detecting the data state of the target service data to obtain a detection result;

Determining data correction information corresponding to the target service data according to the detection result; the data correction information is used for correcting the service data generated in the service execution stage.

14. An electronic device comprising a processor and a memory electrically connected to the processor, the memory storing a computer program, the processor being configured to invoke and execute the computer program from the memory to implement the radio frequency signal correction method of any of claims 8-13.

15. A storage medium storing a computer program executable by a processor to implement the radio frequency signal correction method of any one of claims 8-13.