CN116318472A - Signal identification method and device - Google Patents

Abstract

The embodiment of the application discloses a signal identification method and device, wherein the signal identification device is provided with a demodulation module and an identification module, the demodulation module can be used for carrying out demodulation processing on a signal to be identified through a preset pseudo-random sequence, the identification module is connected with the demodulation module and used for determining whether the signal to be identified has a signal obtained after modulation processing through the preset pseudo-random sequence according to the demodulation result of the demodulation module, and therefore whether a source signal (the source signal is a signal modulated through the pseudo-random sequence) is an interference signal or not can be determined. The signal identification device provided by the embodiment of the application can automatically determine whether the source signals are interference signals, a tester is not required to know the parameters of each source signal, the tester is not required to manually test, and the signal identification efficiency is improved.

Description

Signal identification method and device

Technical Field

The application relates to the technical field of signal identification, in particular to a signal identification method and device.

Background

With the development of electronic devices, in order to meet the demands of users for multiple functions and miniaturization of the electronic devices, signal transmission lines of the electronic devices are more and more dense.

In the related art, to identify the source of a signal received by a receiving module (such as an interference signal of a main signal (useful signal)), the source is mainly performed in combination with the frequency and intensity of the received signal, and since the frequencies and intensities of signals output by different signal sources may be different, when determining the source of the signal received by the receiving module, the source of the signal received by the receiving module is determined by adjusting the frequencies and intensities of signals output by the signal sources, and determining whether the frequencies and intensities of the signal received by the receiving module match with the frequencies and intensities of the signal received by the receiving module.

Because the method needs to test the source of the received signal according to the characteristics of the intensity, the frequency and the like of the signal output by the signal source, the testing process is difficult to automatically carry out, and a tester is required to operate, so that the identification efficiency of the signal source is low.

Disclosure of Invention

The embodiment of the application discloses a signal identification method and device, which can improve the signal identification efficiency.

The embodiment of the application discloses a signal identification device, the signal identification device includes:

the demodulation module is used for receiving the signal to be identified and demodulating the signal to be identified through a preset pseudo-random sequence, wherein the signal to be identified is received after modulating the source signal through the preset pseudo-random sequence;

And the identification module is connected with the demodulation module and used for determining whether the source signal is an interference signal according to the demodulation result of the demodulation module, wherein the source signal is determined to be the interference signal under the condition that the demodulation module is successful in demodulation.

As an alternative embodiment, the demodulation module includes:

the input selection unit comprises a first input end and a plurality of first output ends, wherein the first input end of the input selection unit is used for receiving the signals to be identified, and the input selection unit is used for connecting the first input end of the input selection unit with each first output end of the input selection unit according to a preset rule;

each demodulation unit comprises a second input end and a second output end, the second input ends of the demodulation units are connected with the first output ends of the input selection unit in a one-to-one correspondence mode, the second output ends of the demodulation units are connected with the identification module, each demodulation unit is used for receiving a signal to be identified, demodulating the signal to be identified through a corresponding preset pseudo-random sequence, a demodulation result is output through the corresponding second output end, and the corresponding preset pseudo-random sequences of the demodulation units are different.

As an optional implementation manner, the identification module includes a plurality of third input ends, and the third input ends are connected with the second output ends of the demodulation units in a one-to-one correspondence manner, and are used for obtaining a demodulation result of each demodulation unit, determining a source signal corresponding to a target demodulation unit as an interference signal, where the target demodulation unit is the demodulation unit that is successfully demodulated.

As an alternative implementation manner, the identification module comprises an output selection switch and an identification unit, the output selection switch comprises a plurality of input ends and a third output end, the plurality of input ends of the output selection switch are used as the third input ends of the identification module, and the third output end of the output selection switch is connected with the identification unit;

the output selection switch is used for connecting a third output end of the output selection switch with the target third input end, and the target third input end corresponds to the demodulation unit outputting the demodulation result;

the identification unit is used for determining whether the source signal corresponding to the target demodulation unit is an interference signal or not according to the demodulation result.

As an alternative embodiment, the signal recognition device further includes:

The first switching module is connected with the demodulation module and used for controlling the demodulation module to receive the signal to be identified under the condition that the signal to be identified is determined to have an interference signal.

As an alternative embodiment, the signal identifying device is used for identifying interference in a radio frequency transmission signal, and the signal identifying device further includes:

the radio frequency transmitting module is used for transmitting the radio frequency transmitting signal;

the second switching module is respectively connected with the radio frequency transmitting module and the demodulation module, and is used for receiving the radio frequency transmitting signal and outputting the radio frequency transmitting signal to the demodulation module under the condition that the radio frequency transmitting signal has an interference signal.

As an alternative embodiment, the signal identifying device is used for identifying interference in a radio frequency received signal, and the signal identifying device further includes:

the radio frequency receiving module is used for receiving the radio frequency receiving signal and demodulating the radio frequency receiving signal;

the third switching module is respectively connected with the radio frequency receiving module and the demodulation module, and is used for receiving radio frequency receiving signals and outputting the radio frequency receiving signals to the demodulation module under the condition that the radio frequency transmitting signals have interference signals.

The embodiment of the application discloses a signal identification method, which comprises the following steps:

receiving a signal to be identified, and demodulating the signal to be identified through a preset pseudo-random sequence, wherein the signal to be identified is received after modulating a source signal through the preset pseudo-random sequence;

and determining whether the source signal is an interference signal according to a demodulation result of the demodulation process, wherein the source signal is determined to be the interference signal under the condition that the demodulation process is successful.

As an alternative implementation manner, there are a plurality of preset pseudo-random sequences, and each preset pseudo-random sequence corresponds to a different source signal;

the demodulation processing of the signal to be identified through the preset pseudo-random sequence comprises the following steps:

demodulating the signals to be identified through the plurality of preset pseudo-random sequences respectively;

the determining whether the source signal is an interference signal according to the demodulation result of the demodulation processing includes:

determining whether each source signal corresponding to each preset pseudo-random sequence is an interference signal or not according to a demodulation result of demodulation processing corresponding to each preset pseudo-random sequence; the method comprises the steps of determining a target source signal as an interference signal, wherein a preset pseudo-random sequence corresponding to the target source signal is a target preset pseudo-random sequence, and demodulation processing corresponding to the target preset pseudo-random sequence is successful.

As an optional implementation manner, the demodulating the signal to be identified through the preset pseudo-random sequence includes:

determining whether the signal to be identified comprises an interference signal;

and under the condition that the signal to be identified comprises an interference signal, demodulating the signal to be identified through a preset pseudo-random sequence.

Compared with the related art, the embodiment of the application has the following beneficial effects:

according to the signal identification device provided by the embodiment of the application, the demodulation module and the identification module are arranged, the demodulation module can be used for carrying out demodulation processing on the signal to be identified through the preset pseudo-random sequence, the identification module is connected with the demodulation module and used for determining whether the signal to be identified has the signal obtained after the modulation processing through the preset pseudo-random sequence according to the demodulation result of the demodulation module, and therefore whether a source signal (the source signal is the signal modulated through the pseudo-random sequence) is an interference signal or not can be determined. The signal identification device provided by the embodiment of the application can automatically determine whether the source signals are interference signals, a tester is not required to know the parameters of each source signal, the tester is not required to manually test, and the signal identification efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a signal recognition device disclosed in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a modulation device disclosed in an embodiment of the present application;

FIG. 3 is a schematic diagram of another modulation device according to an embodiment of the present disclosure;

FIG. 4 is a schematic diagram of a signal recognition device according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram of a module structure of a demodulation module and an identification module according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of a signal recognition device according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of still another signal recognition device according to an embodiment of the present application;

fig. 8 is a schematic flow chart of a signal identifying method disclosed in an embodiment of the present application;

FIG. 9 is a flow chart of another signal recognition method disclosed in an embodiment of the present application;

Fig. 10 is a flow chart of still another signal identifying method disclosed in an embodiment of the present application.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the 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 one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that the terms "comprising" and "having" and any variations thereof in the embodiments and figures herein are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1, a signal recognition apparatus provided in an embodiment of the present application is shown, where the signal recognition apparatus may be applied to a terminal device, and the terminal device may include, but is not limited to, a personal computer, a notebook computer, a smart phone, a tablet computer, and a portable wearable device. As shown in fig. 1, the signal identifying device may include a demodulation module 100 and an identification module 200, where the demodulation module 100 is connected to the identification module 200. The demodulation module 100 is configured to receive a signal to be identified, and perform demodulation processing on the signal to be identified through a preset pseudo-random sequence, and the identification module 200 is configured to determine whether the source signal is an interference signal according to a demodulation result of the demodulation module 100, where the source signal is determined to be the interference signal under a condition that the demodulation module 100 successfully demodulates.

It should be noted that, the interference signal is a signal affecting the signal to be identified, the interference signal may be a main signal included in the signal to be identified, or may be an interference signal of the main signal to be identified, the source signal may be a signal affecting the signal to be identified, and the source signal to be modulated by the preset pseudo random sequence may be selected according to an actual terminal device. Before the demodulation module 100 receives the signal to be identified, the source signal is modulated by the pseudo-random sequence, so that the signal to be identified contains the source signal modulated by the pseudo-random sequence instead of the source signal under the condition that the source signal has an influence on the signal to be identified. It may be understood that, in the case where the signal to be identified includes a source signal modulated by a pseudorandom sequence, the demodulation module 100 demodulates the signal to be identified through a preset pseudorandom sequence, so that the source signal modulated by the pseudorandom sequence may be demodulated into the source signal, and in the case where the signal to be identified does not include the source signal modulated by the pseudorandom sequence, the signal demodulated by the demodulation module 100 through the preset pseudorandom sequence does not include the source signal and is a noise signal. In summary, due to the modulation-demodulation characteristic of the pseudo-random sequence, it may be determined whether the signal to be identified includes the source signal according to the demodulation result, that is, whether the source signal is an interference signal of the signal to be identified. Specifically, when it is determined that the demodulation result (the signal to be identified after the demodulation processing) includes a source signal, it is determined that demodulation of the demodulation module is successful, the source signal is an interference signal, and when the demodulation result does not include the source signal, it is determined that demodulation of the demodulation module fails, and the source signal is a non-interference signal.

Referring to fig. 2, in an embodiment, the terminal device may further include a generating module 300 and a modulating module 400, where the modulating module 400 is connected to the generating module 300, and the generating module 300 is configured to generate a source signal, and the modulating module 400 is configured to receive the source signal generated by the generating module 300 and modulate the source signal through a preset pseudo random sequence. The source signals may include, but are not limited to, signals transmitted on CLK (clock) signal lines and DATA (DATA) signal lines of the memory chip, power supply signals, display DATA signals, and the like. It can be understood that, since the generating module 300 is connected to the modulating module 400, the functional module that receives the source signal should set a demodulation unit corresponding to the modulating module 400, so as to implement that the functional module can receive the source signal that is modulated, and ensure that the functional module can implement its function.

As shown in fig. 3, when the source signal includes clock signals of the camera module 510, the display module 520 and the power module 530, the generating module is the clock generating circuit 310, and the clock generating circuit may be used to generate clock signals of the camera module 510, the display module 520 and the power module 530, and the modulating module includes a plurality of modulating units 410, where the modulating units 410 are in one-to-one correspondence with the camera module 510, the display module 520 and the power module 530, and the preset pseudo-random sequences corresponding to the modulating units 410 are different, and each modulating unit 410 may modulate the corresponding clock signal through the corresponding preset pseudo-random sequence. The camera module 510, the display module 520 and the power module 530 all include corresponding demodulation units, and the demodulation units are configured to demodulate the received clock signals through corresponding preset pseudo-random sequences, so that functions of the camera module 510, the display module 520 and the power module 530 are not affected.

It will be appreciated that when the source signal is generated by a generation module of an external device connected to the terminal device, the modulation module may be provided on the external device and connected to the generation module of the external device.

In one embodiment, when the signal identifying apparatus is applied to interference identification of a main signal, the signal to be identified in this embodiment includes the main signal and an interference signal, the source signal is a signal that may cause interference to the main signal, and the interference signal is a signal that actually causes interference to the main signal, that is, the interference signal is at least one of a plurality of source signals.

In one embodiment, when the signal identifying device is applied to primary signal identification, the source signal is a signal that may be a primary signal, and the signal to be identified and the interference signal are primary signals.

When the signal identifying device is applied to power signal identification, the source signal is a power signal output by a power unit of the power system, and the signal to be identified is a power signal for supplying power to the functional module. As shown in fig. 4, the power unit 320 is connected to the functional module 500 through the modulation module 400, the modulation module 400 is used for modulating the power signal output by the power unit 320 through a preset pseudo-random sequence corresponding to the power unit 320, the demodulation module 100 is connected to the functional module 500 and is used for obtaining the power signal input to the functional module 500, the demodulation module 100 is used for demodulating the power signal through a preset pseudo-random code corresponding to the power unit 320, and the identification module 200 receives the demodulation result of the demodulation module 100, so that whether the power signal received by the functional module 500 arrives at the power unit 320 can be determined, and the purpose of identifying the source of the power signal of the functional module 500 is achieved.

In one embodiment, when the modulation process is multiplication modulation, that is, when the preset pseudo-random sequence and the source signal are multiplied to obtain a modulated source signal, the demodulation module performs demodulation processing on the signal to be identified through demodulation processing corresponding to the multiplication modulation, and when the demodulation result is that the demodulated signal to be identified includes the source signal, the demodulation module can be considered to be successful in demodulation, and the source signal corresponding to the preset pseudo-random sequence is determined to be an interference signal.

In one embodiment, when the modulation process is phase modulation, that is, the phase operation is performed on the preset pseudorandom sequence and the source signal (when both the preset pseudorandom sequence and the source signal are "1", the modulated source signal is 1, and when either the preset pseudorandom sequence and the source signal is "0", the modulated source signal is "0") so as to obtain the modulated source signal, the demodulation module performs the demodulation process on the signal to be identified through the demodulation process corresponding to the phase modulation, and when the demodulation result is that the demodulated signal to be identified has a direct current component, the demodulation module can be considered to be successfully demodulated, and the source signal corresponding to the preset pseudorandom sequence is determined to be the interference signal.

According to the signal identification device provided by the embodiment of the application, the demodulation module and the identification module are arranged, the demodulation module can be used for carrying out demodulation processing on the signal to be identified through the preset pseudo-random sequence, the identification module is connected with the demodulation module and used for determining whether the signal to be identified has the signal obtained after the modulation processing through the preset pseudo-random sequence according to the demodulation result of the demodulation module, and therefore whether the source signal (the source signal is the signal modulated through the pseudo-random sequence) is an interference signal or not can be determined. The signal identification device provided by the embodiment of the application can automatically determine whether the source signal is the interference signal, a tester is not required to know the parameters of each source signal, the tester is not required to manually test, and the identification efficiency of the interference signal is improved.

Referring to fig. 5, in an embodiment, the demodulation module 100 may include an input selection unit 110 and a plurality of demodulation units 120, where the input selection unit 110 includes a first input end and a plurality of first output ends, each demodulation unit 120 includes a second input end and a second output end, the first input end of the input selection unit 110 is configured to receive a signal to be identified, the plurality of first output ends of the input selection unit 110 are connected to the second input ends of the plurality of demodulation units 120 in a one-to-one correspondence manner, and the second output end of each demodulation unit 120 is connected to the identification module 200.

The input selecting unit 110 is configured to connect the first input terminal of the input selecting unit 110 with each first output terminal of the input selecting unit 110 according to a preset rule, so as to input the signal to be identified to the corresponding demodulating unit 120 according to the preset rule. Each demodulation unit 120 is configured to receive the signal to be identified, demodulate the signal to be identified through a corresponding preset pseudo-random sequence, and output a demodulation result through a corresponding second output end, so that the identification module 200 can receive the corresponding demodulation result. The preset pseudo-random sequences corresponding to the demodulation units 120 are different, that is, the demodulation units 120 may be configured to perform demodulation processing on the signal to be identified input from the corresponding second input terminal through the corresponding preset pseudo-random sequences, so as to obtain demodulation results corresponding to the preset pseudo-random sequences.

It should be noted that, when the source signal includes a plurality of source signals, the preset pseudo-random sequences are in one-to-one correspondence with the source signals, each source signal is modulated by a plurality of modulation units (corresponding preset pseudo-random sequences are different) through the corresponding preset pseudo-random sequences, so that each source signal is superimposed with the corresponding preset pseudo-random sequence, it can be understood that the preset pseudo-random sequence corresponding to each demodulation unit 120 is in one-to-one correspondence with the preset pseudo-random sequence corresponding to each modulation unit, and thus whether each corresponding source signal is an interference signal can be determined according to the demodulation result of each demodulation unit. The scheme for determining whether the corresponding source signal is an interference signal according to the demodulation result is detailed in the above embodiments, and will not be described herein.

It will be appreciated that the preset rule may be set as required, and in an embodiment, the preset rule may include sequentially connecting the first input terminal with the plurality of first output terminals according to a preset interval time, so as to sequentially input the signals to be identified to different demodulation units 120 according to the preset interval.

In yet another embodiment, the preset rule may include sequentially connecting the first input terminal with a plurality of first output terminal groups according to a preset interval time, where the first output terminal groups include a plurality of first output terminals (less than the total number of the first output terminals of the input selection unit), that is, the signals to be identified are respectively input into the plurality of demodulation units 120 at the same time, so that the identification efficiency of the interference signals may be improved.

It should be noted that fig. 5 shows a case where the demodulation module 100 includes 6 demodulation units 120 and the input selection unit 110 includes 6 first outputs, but in different cases, the number of the demodulation units 120 and the first outputs of the input selection unit 110 of the demodulation module 100 may be determined according to the number of source signals. Optionally, the number of demodulation units 120 of the demodulation module 100 and the number of first outputs of the input selection unit 110 are consistent with the number of determined source signals (i.e. source signals modulated by a preset pseudo random sequence).

The demodulation module 100 provided in this embodiment includes the input selection unit 110 and the plurality of demodulation units 120, so that a plurality of demodulation results corresponding to a plurality of preset pseudo-random sequences one by one can be obtained, that is, demodulation results corresponding to a plurality of source signals can be obtained, so that it can be determined which one or more of the plurality of source signals is an interference signal.

In one embodiment, the identification module 200 may include a plurality of third input terminals, where the plurality of third input terminals are connected to the second output terminals of the plurality of demodulation units 120 in a one-to-one correspondence manner, and are configured to obtain a demodulation result of each demodulation unit 120, and determine a source signal corresponding to a target demodulation unit as an interference signal. The target demodulation unit 120 is a demodulation unit 120 that successfully demodulates. It will be appreciated that the target demodulation unit may be one or more, i.e. the source signal determined to be an interfering signal may also be one or more.

It should be noted that, for the determination method of demodulation success, reference is made to the above description, and will not be described here. Since the preset pseudo-random sequences of the demodulation units 120 are in one-to-one correspondence with the preset pseudo-random sequences for modulating the source signals, the demodulation units 120 are in one-to-one correspondence with the source signals, so that the target demodulation unit 120 indicates that the signal to be identified contains the modulated source signal (modulated source signal) corresponding to the target demodulation unit, and thus the source signal can be determined to be an interference signal. Specifically, the source signal corresponding to the target demodulation unit is an interference signal, and the source signals corresponding to the demodulation units 120 other than the target demodulation unit are non-interference signals.

In one embodiment, the identification module 200 may further include a display unit for displaying interference information indicating the interference signal so that the tester can learn the interference signal.

In one embodiment, the demodulation result output by each demodulation unit 120 may include a corresponding demodulation signal and a corresponding demodulation unit identifier, the identification module 200 presets a correspondence between the demodulation unit identifier and the source signal, and the identification module 200 may determine whether the demodulation of the corresponding demodulation unit 120 is successful according to the demodulation result of the demodulation unit, and determine the source signal according to the demodulation unit identifier and the correspondence under the condition that the demodulation of the demodulation unit 120 is determined to be successful, so as to determine the source of the interference signal.

With continued reference to fig. 5, the identification module 200 may include an output selection unit 210 and an identification unit 220, where the output selection unit 210 includes a plurality of input ends and a third output end, the plurality of input ends of the output selection unit 210 are connected to the second output ends of the demodulation units 120 in a one-to-one correspondence, and the third output end of the output selection unit 210 is connected to the identification unit 220. It can be appreciated that the plurality of input terminals of the output selecting unit 210 serve as the plurality of third input terminals of the identification module 200.

The output selecting unit 210 is configured to connect an output terminal of the output selecting unit 210 with a target third input terminal, where the target third input terminal corresponds to the demodulation unit 120 outputting the demodulation result, and the identifying unit 220 is configured to determine whether the source signal corresponding to the demodulation unit 120 outputting the demodulation result is an interference signal according to the demodulation result.

It should be noted that, as can be seen from the above description, since the input selecting unit inputs the signal to be identified to the corresponding demodulating unit 120 according to the preset rule, in order to output the demodulation result to the identifying unit 220, the third output terminal of the output selecting unit 210 should be connected to the second output terminal of the demodulating unit 120 that receives the signal to be identified, so that the identifying unit 220 can obtain the demodulation result.

The identification module 200 provided in this embodiment includes the output selection unit 210 and the identification unit 220, so that occupation of ports of the identification unit 220 can be reduced.

In one embodiment, the interference recognition device may further include a first switching module, and the first switching module is connected to the demodulation module 100. The first switching module may be configured to control the demodulation module 100 to receive the signal to be identified in the case that it is determined that the signal to be identified has an interference signal. Optionally, a first input of the control input selection unit 110 receives a signal to be identified.

When the signal recognition device is applied to interference recognition of the main signal, and when the signal to be recognized comprises the main signal and the interference signal, the signal to be recognized is considered to be determined to have the interference signal.

When the signal recognition device is applied to main signal recognition, and when the indication signal is received, the signal to be recognized is considered to have an interference signal. The indication signal is used for indicating that the signal to be identified needs to be identified. For example, the indication signal may be a signal generated in response to a test trigger operation of a tester, and when the first switching module receives the indication signal, the demodulation module 100 is controlled to receive a signal to be identified to determine the interference signal.

In one embodiment, the first switching module includes a fifth input end, a fifth output end and a sixth output end, the fifth input end is used for receiving the signal to be identified, the fifth output end is connected with the demodulation module 100, the sixth output end is used for being connected with the execution module, and the first switching module controls the fifth input end to be connected with the fifth output end so that the demodulation module 100 can receive the signal to be identified when determining that the signal to be identified has an interference signal, wherein the execution module is used for receiving the signal to be identified to execute corresponding operations on the signal to be identified, and the radio frequency transmitting module and the radio frequency receiving module are described in the following embodiments.

In this embodiment, by providing the signal identifying device including the first switching module, the signal identifying device may be provided on the terminal device, and when signal identification is required, the demodulation module 100 is controlled to receive the signal to be identified, so as to identify the interference signal. When signal identification is not needed, the fifth input end and the sixth output end can be connected, so that the terminal equipment can work normally.

In one embodiment, in the case that it is determined that the signal to be identified does not have an interference signal, the demodulation module 100 is controlled not to receive the signal to be identified, so that power consumption of the terminal device can be reduced.

Referring to fig. 6, another signal identifying apparatus provided in an embodiment of the present application may be applied to a terminal device for identifying interference in a radio frequency transmission signal. As shown in fig. 6, the signal identifying device includes a radio frequency transmitting module 600, a second switching module 700, a demodulation module 100 and an identifying module 200, wherein the second switching module 700 is connected with the radio frequency transmitting module 600 and the demodulation module 100, the demodulation module 100 is connected with the identifying module 200, the radio frequency transmitting module 600 is used for transmitting radio frequency transmitting signals, the second switching module 700 is used for receiving radio frequency transmitting signals, and outputting the radio frequency transmitting signals to the demodulation module 100 under the condition that the radio frequency transmitting signals have interference signals.

It should be noted that, for the description of the demodulation module 100 and the identification module 200, reference is made to the above embodiments, and the description is omitted here. The rf transmitting module 600 is configured to transmit an rf transmitting signal to another terminal device in communication with the terminal device. In one embodiment, the rf transmitting module 600 may include an antenna, and the second switching module 700 is connected to the antenna for transmitting the rf transmitting signal to another terminal device through the antenna. In yet another embodiment, the radio frequency transmitting module 600 may include a power coupling detection unit and an antenna, where the power coupling detection unit is connected to the second switching module 700 and the power detection unit, respectively, and the power coupling detection unit is configured to analyze the radio frequency transmitting signal and transmit the radio frequency transmitting signal to the antenna to transmit the radio frequency transmitting signal to another terminal device.

In one embodiment, the input end of the second switching module 700 is connected to the rf front end 800 of the terminal device, and is configured to receive an rf transmit signal generated by the rf front end 800. Optionally, the second switching module 700 is further configured to output the radio frequency transmission signal to the radio frequency transmission module 600 under the condition that the radio frequency transmission signal does not need to be subjected to interference identification, so that the terminal device can normally transmit the radio frequency transmission signal. Optionally, the second switching module 700 is a single pole double throw switch, an input end of the second switching module 700 is used for receiving a radio frequency emission signal, an output end of the second switching module 700 is connected with the radio frequency emission module 600, another output end of the second switching module 700 is connected with the demodulation module 100, the second switching module 700 is used for outputting the radio frequency emission signal to the demodulation module 100 when the radio frequency emission signal has an interference signal, and outputting the radio frequency emission signal to the radio frequency emission module 600 when the radio frequency emission signal does not need to be subjected to interference identification.

The signal identifying device provided in this embodiment can realize that the terminal device normally transmits the radio frequency transmission signal through the second switching module 700, or performs interference identification on the radio frequency transmission signal, so that it can clearly know which source signal or source signals the radio frequency transmission signal is interfered by, and meanwhile, the interference signal identifying efficiency is high, and the radio frequency transmission function of the terminal device is not affected.

Referring to fig. 7, another signal identifying apparatus provided in an embodiment of the present application may be applied to a terminal device for identifying interference in a radio frequency received signal. As shown in fig. 7, the signal identifying apparatus includes a radio frequency receiving module 900, a third switching module 1000, a demodulation module 100 and an identifying module 200, wherein the third switching module 1000 is connected with the radio frequency receiving module 900 and the demodulation module 100, and the demodulation module 100 is connected with the identifying module 200, wherein the radio frequency receiving module 900 is configured to receive a radio frequency receiving signal and demodulate the radio frequency receiving signal, and the third switching module 1000 is configured to receive the radio frequency receiving signal and output the radio frequency receiving signal to the demodulation module 100 when the radio frequency receiving signal has an interference signal.

It should be noted that, for the description of the demodulation module 100 and the identification module 200, reference is made to the above embodiments, and the description is omitted here. The radio frequency receiving module 900 is configured to receive and demodulate a radio frequency receiving signal, where the radio frequency receiving signal is a radio frequency signal transmitted by another terminal device, and the radio frequency receiving module 900 may receive and demodulate the radio frequency receiving signal to implement communication with the other terminal device. In one embodiment, the rf receiving module 900 may include a demodulator, and the third switching module 1000 is connected to the demodulator.

In one embodiment, the input terminal of the third switching module 1000 is connected to the antenna of the terminal device, so as to receive the radio frequency receiving signal transmitted by another terminal device through the antenna. Optionally, the third switching module 1000 is further configured to output the rf receiving signal to the rf receiving module 900 under the condition that the rf receiving signal does not need to be identified by interference, so that the rf receiving signal can be demodulated. Optionally, the third switching module 1000 is a single pole double throw switch, an input end of the third switching module 1000 is used for receiving a radio frequency receiving signal, an output end of the third switching module 1000 is connected with the radio frequency receiving module 900, another output end of the third switching module 1000 is connected with the demodulation module 100, the third switching module 1000 is used for outputting the radio frequency receiving signal to the demodulation module 100 when the radio frequency receiving signal has an interference signal, and the radio frequency receiving signal is output to the radio frequency receiving module 900 when the radio frequency receiving signal does not need to be subjected to interference identification.

The signal identifying device provided in this embodiment can realize that the terminal device normally receives the radio frequency receiving signal and demodulates the radio frequency receiving signal, or performs interference identification on the radio frequency receiving signal, so that it can clearly know which source signal or source signals the radio frequency receiving signal is interfered by, and meanwhile, the interference identifying efficiency is high, and the radio frequency receiving function of the terminal device is not affected.

It will be appreciated that each module in the signal recognition device described above may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

In an embodiment, an embodiment of the present application provides a terminal device, where the terminal device may include any one of the signal identifying apparatuses provided in the foregoing embodiments.

Referring to fig. 8, a signal identifying method according to an embodiment of the present application is shown, and the signal identifying method may include steps S820 to S840.

S820, receiving the signal to be identified, and demodulating the signal to be identified through a preset pseudo-random sequence.

The signal to be identified is received after modulating the source signal by a preset pseudo-random sequence. Alternatively, step S820 may be implemented by a demodulation module of the signal recognition device.

S840, according to the demodulation result of the demodulation process, determining whether the source signal is an interference signal.

Wherein, in case the demodulation process is successful, the source signal is determined as an interference signal. Optionally, step S840 may be implemented by an identification module of the signal identification device.

In one embodiment, determining whether the source signal is an interference signal according to a demodulation result of the demodulation process includes: and determining whether demodulation processing is successful, if so, determining that the source signal is an interference signal, and if not, determining that the source signal is a non-interference signal.

It should be noted that, as can be seen from the above description, in the case where the signal to be identified after the demodulation processing includes the source signal, the demodulation processing can be considered to be successful; in the case where the signal to be recognized after the demodulation processing does not include the source signal, the demodulation processing may be regarded as failed.

According to the signal identification method provided by the embodiment of the application, the signal to be identified is received and is subjected to demodulation processing through the preset pseudo-random sequence, so that whether a signal obtained after modulation processing through the preset pseudo-random sequence exists or not can be determined according to the demodulation result of the demodulation processing, whether the source signal is an interference signal or not can be determined, whether the source signal is the interference signal or not can be automatically determined, a tester does not need to know parameters of each source signal, the tester does not need to manually test, and the signal identification efficiency is improved.

Referring to fig. 9, another signal identifying method provided by the embodiment of the present application is shown, and it should be noted that the embodiment provides a signal identifying method when there are a plurality of source signals, where there are a plurality of preset pseudo-random sequences, each of the preset pseudo-random sequences corresponds to each of the source signals one by one, and each of the source signals is modulated by the corresponding preset pseudo-random sequence. As shown in fig. 9, the signal recognition method may include steps S822 to S842.

S822, receiving the signals to be identified, and respectively demodulating the signals to be identified through a plurality of preset pseudo-random sequences.

S824, determining whether each source signal corresponding to each preset pseudo-random sequence is an interference signal according to the demodulation result of the demodulation process corresponding to each preset pseudo-random sequence.

The target source signal is determined to be an interference signal, the preset pseudo-random sequence corresponding to the target source signal is a target preset pseudo-random sequence, and demodulation processing corresponding to the target preset pseudo-random sequence is successful. Alternatively, step S822 may be implemented by the input selecting unit of the demodulation module and a plurality of demodulation units, and step S824 may be implemented by the identification module.

According to the signal identification method provided by the embodiment of the application, the signals to be identified are respectively demodulated through the plurality of preset random sequences, so that demodulation results corresponding to the plurality of preset random sequences can be obtained, namely demodulation results corresponding to the plurality of source signals can be obtained, and whether the source signals are interference signals or not can be determined.

Referring to fig. 10, another signal identifying method provided in an embodiment of the present application is shown, where the signal identifying method may include steps S1020 to S1060.

S1020, receiving the signal to be identified, determining whether the signal to be identified comprises an interference signal, if yes, executing step S1040.

S1040, demodulating the signal to be identified through a preset pseudo-random sequence.

S1060, according to the demodulation result of the demodulation process, whether the source signal is an interference signal is determined.

Wherein, in case the demodulation process is successful, the source signal is determined as an interference signal.

In one embodiment, as shown in fig. 10, in the case where it is determined that the signal to be recognized does not include an interference signal, step S1050 is performed.

S1050, the control execution module receives the signal to be identified.

It should be understood that, although the steps in the flowcharts of fig. 8-10 are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in fig. 8-10 may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor do the order in which the sub-steps or stages are performed necessarily occur sequentially, but may be performed alternately or alternately with at least a portion of the sub-steps or stages of other steps or steps.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (10)

1. A signal recognition device, characterized in that the signal recognition device comprises:

the demodulation module is used for receiving the signal to be identified and demodulating the signal to be identified through a preset pseudo-random sequence, wherein the signal to be identified is received after modulating the source signal through the preset pseudo-random sequence;

and the identification module is connected with the demodulation module and used for determining whether the source signal is an interference signal according to the demodulation result of the demodulation module, wherein the source signal is determined to be the interference signal under the condition that the demodulation module is successful in demodulation.

2. The signal recognition device of claim 1, wherein the demodulation module comprises:

the input selection unit comprises a first input end and a plurality of first output ends, wherein the first input end of the input selection unit is used for receiving the signals to be identified, and the input selection unit is used for connecting the first input end of the input selection unit with each first output end of the input selection unit according to a preset rule;

each demodulation unit comprises a second input end and a second output end, the second input ends of the demodulation units are connected with the first output ends of the input selection unit in a one-to-one correspondence mode, the second output ends of the demodulation units are connected with the identification module, each demodulation unit is used for receiving a signal to be identified, demodulating the signal to be identified through a corresponding preset pseudo-random sequence, a demodulation result is output through the corresponding second output end, and the corresponding preset pseudo-random sequences of the demodulation units are different.

3. The signal recognition device according to claim 2, wherein the recognition module comprises a plurality of third input terminals, and the third input terminals are connected with the second output terminals of the demodulation units in a one-to-one correspondence manner, and are used for obtaining a demodulation result of each demodulation unit, and determining a source signal corresponding to a target demodulation unit as an interference signal, wherein the target demodulation unit is the demodulation unit that has successfully demodulated.

4. A signal recognition device according to claim 3, wherein the recognition module comprises an output selection switch and a recognition unit, the output selection switch comprising a plurality of inputs and a third output, the plurality of inputs of the output selection switch being the plurality of third inputs of the recognition module, the third output of the output selection switch being connected to the recognition unit;

the output selection switch is used for connecting a third output end of the output selection switch with the target third input end, and the target third input end corresponds to the demodulation unit outputting the demodulation result;

the identification unit is used for determining whether the source signal corresponding to the target demodulation unit is an interference signal or not according to the demodulation result.

5. The signal recognition device according to any one of claims 1 to 4, further comprising:

the first switching module is connected with the demodulation module and used for controlling the demodulation module to receive the signal to be identified under the condition that the signal to be identified is determined to have an interference signal.

6. The signal recognition device according to any one of claims 1 to 4, wherein the signal recognition device is used for interference recognition in a radio frequency transmission signal, the signal recognition device further comprising:

The radio frequency transmitting module is used for transmitting the radio frequency transmitting signal;

the second switching module is respectively connected with the radio frequency transmitting module and the demodulation module, and is used for receiving the radio frequency transmitting signal and outputting the radio frequency transmitting signal to the demodulation module under the condition that the radio frequency transmitting signal has an interference signal.

7. The signal recognition device according to any one of claims 1 to 4, wherein the signal recognition device is used for interference recognition in a radio frequency received signal, the signal recognition device further comprising:

the radio frequency receiving module is used for receiving the radio frequency receiving signal and demodulating the radio frequency receiving signal;

the third switching module is respectively connected with the radio frequency receiving module and the demodulation module, and is used for receiving radio frequency receiving signals and outputting the radio frequency receiving signals to the demodulation module under the condition that the radio frequency receiving signals have interference signals.

8. A method of signal identification, the method comprising:

receiving a signal to be identified, and demodulating the signal to be identified through a preset pseudo-random sequence, wherein the signal to be identified is received after modulating a source signal through the preset pseudo-random sequence;

And determining whether the source signal is an interference signal according to a demodulation result of the demodulation process, wherein the source signal is determined to be the interference signal under the condition that the demodulation process is successful.

9. The signal recognition method according to claim 8, wherein there are a plurality of the predetermined pseudo-random sequences, each of the predetermined pseudo-random sequences corresponding to a different source signal;

the demodulation processing of the signal to be identified through the preset pseudo-random sequence comprises the following steps:

demodulating the signals to be identified through the plurality of preset pseudo-random sequences respectively;

the determining whether the source signal is an interference signal according to the demodulation result of the demodulation processing includes:

determining whether each source signal corresponding to each preset pseudo-random sequence is an interference signal or not according to a demodulation result of demodulation processing corresponding to each preset pseudo-random sequence; the method comprises the steps of determining a target source signal as an interference signal, wherein a preset pseudo-random sequence corresponding to the target source signal is a target preset pseudo-random sequence, and demodulation processing corresponding to the target preset pseudo-random sequence is successful.

10. The signal recognition method according to claim 8, wherein the demodulating the signal to be recognized by the preset pseudo-random sequence includes:

Determining whether the signal to be identified comprises an interference signal;

and under the condition that the signal to be identified comprises an interference signal, demodulating the signal to be identified through a preset pseudo-random sequence.

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