Wireless communication co-frequency interference suppression system and method

Abstract

The invention discloses a wireless communication co-frequency interference suppression system and method, and belongs to the technical field of wireless communication. The wireless communication co-frequency interference suppression system comprises a signal difference module, a communication module and a transceiving module. The invention solves the problems that the interference of same-frequency signals is more or less encountered in the actual use process in the prior art, the signal-to-noise ratio of received signals is influenced, and the communication quality is further influenced, and the interference signals are inhibited by controlling the phase difference of useful signals and performing differential combination during receiving by using the same phase of interference signals, so that the communication quality is improved. And useful signals are reserved, the power of the useful signals is not lost after the useful signals pass through the transmitting splitter and the receiving combiner, and interference signals are mutually counteracted after passing through the receiving orthogonal antenna, the differential path and the receiving combiner, so that the purposes of reserving the useful signals and suppressing the interference signals are achieved, and stronger signal output is realized. Therefore, the signal stability and reliability are improved, interference and noise are reduced, and the signal definition is improved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a system and method for suppressing co-channel interference in wireless communication. Background Art

[0002] Currently, in wireless communication systems, the technology of user equipment simultaneously establishing wireless data connections with multiple base stations through different carriers has been widely used.

[0003] A Chinese patent with publication number CN112566160A discloses a wireless communication system and method, a base station, a user equipment and an apparatus, including: a deactivated base station; a non-deactivated base station; and a user equipment, wherein the user equipment simultaneously establishes wireless data connections with the deactivated base station and the non-deactivated base station through different carriers, and the deactivation trigger node triggers a deactivation process for releasing the wireless data connection between the deactivated base station and the user equipment when it is determined that the deactivation condition is met, so that when the deactivation condition is met, the user equipment releases the data bearer that is not acceptable to the non-deactivated base station in the data bearer between the deactivated base station and the user equipment, and sends and receives the acceptable data bearer on the service carrier of the non-deactivated base station, thereby ensuring that the user equipment obtains reliable service.

[0004] The wireless communication system of the above patent will more or less encounter interference from co-frequency signals during actual use, affecting the signal-to-noise ratio of the received signal and further affecting the communication quality; therefore, it does not meet the existing needs. We have proposed a wireless communication co-frequency interference suppression system and method. Summary of the invention

[0005] The purpose of the present invention is to provide a wireless communication co-channel interference suppression system and method, which achieves the purpose of retaining useful signals and suppressing interference signals by retaining useful signals and canceling out interference signals after passing through receiving orthogonal antennas, differential paths and receiving combiners, so as to achieve stronger signal output, thereby improving signal stability and reliability, reducing interference and noise, and improving signal clarity, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a wireless communication co-channel interference suppression system, comprising:

[0007] The signal differential module is used to process the original signal entering the transmission interface and evenly distribute the input power of the original signal to multiple output ports, while testing the power balance and matching of different components in the wireless communication system circuit;

[0008] The transceiver module is used to convert the differential signal into a high-frequency radio frequency signal, amplify and filter the high-frequency signal, change the phase and transmission direction of the filtered differential signal, perform phase compensation on the received differential signal, and merge the signals of multiple differential signal sources after phase compensation into one transmission line;

[0009] The communication module is used to realize the energy conversion between high-frequency current and free-space wave in the wireless communication system, concentrate the signal strength and reduce signal interference, realize the differential signal reception of the wireless communication system, further analyze the received differential signal, and detect the quality and integrity of the differential signal.

[0010] Preferably, the signal differential module includes:

[0011] The signal processing module is used to modulate, demodulate, encode and decode the original signal entering the transmission interface;

[0012] The transmitting interface is used to receive the original signal processed by the signal processing module and send the original signal to the transmitting power splitter;

[0013] The transmitting power divider is used to evenly distribute the input power of the original signal to multiple output ports, and at the same time test the power balance and matching of different components in the wireless communication system circuit.

[0014] Preferably, the signal differential module further includes:

[0015] The duration monitoring module is used to monitor in real time the processing response duration of each signal processing process corresponding to the modulation and demodulation of the signal processing module;

[0016] The first response time index coefficient acquisition module is used to obtain the first response time index coefficient according to the processing response time of each signal processing process of the signal processing module; wherein the first response time index coefficient is obtained by the following formula:

[0017]

[0018] Among them, F 01 represents the first response time index coefficient; n represents the number of modulation processing times of the signal processing module; m represents the number of modulation processing times of the signal processing module; T 01i represents the processing response time corresponding to the i-th modulation process; T 02i represents the processing response time corresponding to the i-th demodulation process; T c01 represents the preset response time reference value of the modulation process; T c02 Indicates the preset reference value of the response time of the demodulation process; T 01b represents the standard deviation of the processing response time corresponding to n modulation processes; T 02brepresents the standard deviation of the processing response time corresponding to m demodulation processes;

[0019] A first comparison module, used for comparing the first response time index coefficient with a preset index coefficient threshold;

[0020] The abnormality determination module is used to determine whether the signal processing module processes a response abnormality when the first response time index coefficient exceeds a preset index coefficient threshold.

[0021] Preferably, the abnormality determination module includes:

[0022] A duration retrieving module, configured to retrieve the processing response duration of each signal processing process corresponding to encoding and decoding when the first response duration index coefficient exceeds a preset index coefficient threshold;

[0023] A second response time index coefficient acquisition module, used to acquire a second response time index coefficient by using the processing response time of each signal processing process corresponding to the encoding and decoding;

[0024] The second response time index coefficient is obtained by the following formula:

[0025]

[0026] Among them, F 02 represents the second response time index coefficient; k represents the number of encoding processing times of the signal processing module; g represents the number of decoding processing times of the signal processing module; T 03i represents the processing response time corresponding to the i-th encoding process; T 04i represents the processing response time corresponding to the i-th decoding process; T 03b represents the standard deviation of the processing response time corresponding to k encoding processes; T 04b represents the standard deviation of the processing response time corresponding to g decoding processes; T 03max represents the maximum processing response time corresponding to k encoding processes; T 04max Indicates the maximum processing response time corresponding to g decoding processes;

[0027] A comprehensive index coefficient acquisition module, configured to acquire a comprehensive index coefficient by using the first response time index coefficient and the second response time index coefficient;

[0028] The comprehensive index coefficient is obtained by the following formula:

[0029]

[0030] Among them, F represents the comprehensive index coefficient; F 01 Represents the first response time index coefficient; F 02represents the second response duration index coefficient;

[0031] A second comparison module, used for comparing the comprehensive index coefficient with a preset comprehensive coefficient threshold;

[0032] The abnormality determination and alarm module is used to determine that the processing response of the signal processing module is abnormal and issue an abnormality alarm when the comprehensive index coefficient exceeds a preset comprehensive coefficient threshold.

[0033] Preferably, the transceiver module includes:

[0034] The transmitting module is used to convert the differential signal into a high-frequency radio frequency signal, amplify and filter the high-frequency signal, and change the phase and transmission direction of the filtered differential signal;

[0035] The receiving module is used to adjust the phase of the differential signal, perform phase compensation on the received differential signal, and merge the signals of multiple differential signal sources after phase compensation into one transmission line.

[0036] Preferably, the transmitting module comprises:

[0037] Signal conversion module, used to convert differential signals into high-frequency RF signals and amplify high-frequency signals

[0038] A signal filtering module is used to filter the differential signal after the signal conversion is completed to remove unnecessary frequency components;

[0039] The transmitting phase shifter is used to receive the filtered differential signal and change the phase and transmission direction of the filtered differential signal. The transmitting phase shifter includes a transmitting phase shifter A and a transmitting phase shifter B.

[0040] Preferably, the receiving module comprises:

[0041] A receiving phase shifter, used for adjusting the phase of the differential signal and performing phase compensation on the received differential signal, the receiving phase shifter comprising a receiving phase shifter A and a receiving phase shifter B;

[0042] The receiving combiner is used to combine the signals of multiple differential signal sources after phase compensation into one transmission line.

[0043] Preferably, the signal transmission module comprises:

[0044] Transmitting orthogonal antennas, used to achieve energy conversion between high-frequency current and free-space waves in wireless communication systems, concentrate signal strength and reduce signal interference;

[0045] The receiving orthogonal antenna is used to convert the electromagnetic waves in the wireless communication system into electrical signals to realize the differential signal reception of the wireless communication system. The transmitting orthogonal antenna and the receiving orthogonal antenna are both dual-polarized orthogonal antennas with a polarization of ±45°;

[0046] The signal analysis module is used to further analyze the received differential signal and detect the quality and integrity of the differential signal.

[0047] Preferably, the signal analysis module comprises:

[0048] Extracting characteristic information from the received differential signal, the characteristic information including the frequency, amplitude and phase of the differential signal;

[0049] Setting multiple thresholds and comparing the collected differential signal with the set thresholds;

[0050] If a certain feature of the differential signal exceeds a set threshold, the differential signal is determined to be a valid signal.

[0051] A method for suppressing co-channel interference in wireless communication comprises the following steps:

[0052] S1: The transmit signal is input from the transmit interface and is divided into two differential paths after passing through the transmit power divider;

[0053] S2: The signal is phase-shifted by the transmitting phase shifter A and the transmitting phase shifter B to obtain a differential signal, and the differential signal is transmitted through the transmitting orthogonal antenna;

[0054] S3: The receiving orthogonal antenna receives the differential signal, and the differential signal is phase-shifted by receiving phase shifter A and receiving phase shifter B;

[0055] S4: The phase-shifted signal passes through the receiving combiner and then continues to output the useful signal to the receiving interface. The interference signals cancel each other out after passing through the receiving orthogonal antenna, the differential path and the receiving combiner.

[0056] Compared with the prior art, the present invention has the following beneficial effects:

[0057] The present invention controls the phase difference of useful signals and utilizes the same phase of interference signals to perform differential combining during reception, thereby suppressing interference signals and retaining useful signals. The useful signals will not lose power after passing through a transmitting splitter and a receiving combiner, while interference signals cancel each other out after passing through a receiving orthogonal antenna, a differential path and a receiving combiner, thereby achieving the purpose of retaining useful signals and suppressing interference signals, achieving stronger signal output, changing the transmission direction of signals, improving the flexibility and efficiency of the system, and accurately adjusting the phase of signals to ensure that the signals maintain an optimal phase relationship during transmission, thereby improving signal stability and reliability, reducing interference and noise, and improving signal clarity. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 A schematic diagram of a wireless communication co-channel interference suppression system module of the present invention;

[0059] Figure 2 A schematic diagram of signal transmission of a wireless communication co-channel interference suppression system according to the present invention;

[0060] Figure 3 A schematic diagram of signal reception of a wireless communication co-channel interference suppression system according to the present invention;

[0061] Figure 4 It is a schematic diagram of the method for suppressing co-channel interference in wireless communications of the present invention. DETAILED DESCRIPTION

[0062] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0063] In order to solve the problem that the existing wireless communication system will more or less encounter interference from the same frequency signal during actual use, affecting the signal-to-noise ratio of the received signal and thus affecting the communication quality, please refer to Figure 1-Figure 4 , this embodiment provides the following technical solutions:

[0064] Wireless communication co-channel interference suppression system, including:

[0065] The signal differential module is used to process the original signal entering the transmission interface and evenly distribute the input power of the original signal to multiple output ports, while testing the power balance and matching of different components in the wireless communication system circuit;

[0066] Communication module, used to realize the energy conversion between high-frequency current and free-space wave in wireless communication system, concentrate signal strength and reduce signal interference, realize differential signal reception of wireless communication system, further analyze the received differential signal, and detect the quality and integrity of the differential signal;

[0067] The transceiver module is used to convert the differential signal into a high-frequency RF signal, amplify and filter the high-frequency signal, change the phase and transmission direction of the filtered differential signal, perform phase compensation on the received differential signal, and merge the signals of multiple differential signal sources after phase compensation into one transmission line.

[0068] Figure 2-3In the figure, Y represents a transmitting orthogonal antenna, X represents a receiving orthogonal antenna, M represents a transmitting phase shifter, N represents a receiving phase shifter, Q represents a receiving combiner, P represents a transmitting power divider, A represents a transmitting interface, and B represents a receiving interface.

[0069] Signal differential module, including:

[0070] The signal processing module is used to modulate, demodulate, encode and decode the original signal entering the transmission interface to ensure that the signal can be effectively transmitted in the channel and correctly received by the information;

[0071] Transmitter interface, used to receive the original signal processed by the signal processing module and send the original signal to the transmitter power splitter

[0072] Transmitter power divider, used to evenly distribute the input power of the original signal to multiple output ports, and at the same time test the power balance and matching of different components in the wireless communication system circuit, and realize power distribution and matching in the circuit;

[0073] The transmitting power splitter can divide the input signal into equal or unequal multiple output signals, or distribute the output signal of the transmitter to multiple antennas to achieve directional propagation of the signal or cover a wider area, synthesize and superimpose the output signals of multiple signal sources to achieve stronger signal output, and monitor and protect the signal, dividing the input signal into multiple output signals, each of which can be monitored by a sensor, saving investment and cost.

[0074] Specifically, the signal differential module further includes:

[0075] The duration monitoring module is used to monitor in real time the processing response duration of each signal processing process corresponding to the modulation and demodulation of the signal processing module;

[0076] The first response time index coefficient acquisition module is used to acquire the first response time index coefficient according to the processing response time of each signal processing process of the signal processing module; wherein the first response time index coefficient is acquired by the following formula:

[0077]

[0078] Among them, F 01 represents the first response time index coefficient; n represents the number of modulation processing times of the signal processing module; m represents the number of modulation processing times of the signal processing module; T 01i represents the processing response time corresponding to the i-th modulation process; T 02i represents the processing response time corresponding to the i-th demodulation process; T c01 represents the preset modulation processing response time reference value; T c02Indicates the preset reference value of the response time of the demodulation process; T 01b represents the standard deviation of the processing response time corresponding to n modulation processes; T 02b represents the standard deviation of the processing response time corresponding to m demodulation processes;

[0079] A first comparison module, used for comparing the first response time index coefficient with a preset index coefficient threshold;

[0080] The abnormality determination module is used to determine whether the signal processing module processes a response abnormality when the first response time index coefficient exceeds a preset index coefficient threshold.

[0081] The technical effect of the above technical solution is that the processing response time of each modulation and demodulation process in the signal processing module can be monitored in real time through the time monitoring module. This real-time monitoring helps to find performance bottlenecks or anomalies in time, so that corresponding measures can be taken to correct them. The first response time index coefficient acquisition module uses a complex formula to calculate the first response time index coefficient, which comprehensively considers the number of modulation and demodulation processes, the response time of each process, the preset response time reference value, and the standard deviation of the processing response time. This comprehensive evaluation method can more accurately reflect the overall performance of the signal processing module. The first comparison module and the abnormality determination module can automatically detect whether the signal processing module has a processing response anomaly by comparing the first response time index coefficient with the preset index coefficient threshold. Once an anomaly is detected, the system can immediately issue an early warning so that the operation and maintenance personnel can take timely measures to troubleshoot and repair the fault. By monitoring and analyzing the processing response time, the inefficient or redundant links that may exist in the signal processing module can be identified, so as to optimize it. This optimization can not only improve the efficiency of the signal processing module, but also reduce its energy consumption and cost. Through real-time monitoring and anomaly detection, potential problems in the signal processing module can be discovered and handled in a timely manner, thus avoiding their impact on the entire system. This helps to improve the stability and reliability of the entire system.

[0082] In summary, this technical solution integrates multiple sub-modules to monitor and analyze the processing response time of the signal processing module in real time, which can accurately evaluate its performance, promptly detect and handle anomalies, thereby optimizing the signal processing process and improving system stability and reliability.

[0083] Specifically, the abnormality determination module includes:

[0084] A duration retrieving module, configured to retrieve the processing response duration of each signal processing process corresponding to encoding and decoding when the first response duration index coefficient exceeds a preset index coefficient threshold;

[0085] A second response time index coefficient acquisition module, used to acquire a second response time index coefficient by using the processing response time of each signal processing process corresponding to the encoding and decoding;

[0086] The second response time index coefficient is obtained by the following formula:

[0087]

[0088] Among them, F 02 represents the second response time index coefficient; k represents the number of encoding processing times of the signal processing module; g represents the number of decoding processing times of the signal processing module; T 03i represents the processing response time corresponding to the i-th encoding process; T 04i represents the processing response time corresponding to the i-th decoding process; T 03b represents the standard deviation of the processing response time corresponding to k encoding processes; T 04b represents the standard deviation of the processing response time corresponding to g decoding processes; T 03max represents the maximum processing response time corresponding to k encoding processes; T 04max Indicates the maximum processing response time corresponding to g decoding processes;

[0089] A comprehensive index coefficient acquisition module, configured to acquire a comprehensive index coefficient by using the first response time index coefficient and the second response time index coefficient;

[0090] The comprehensive index coefficient is obtained by the following formula:

[0091]

[0092] Among them, F represents the comprehensive index coefficient; F 01 Represents the first response time index coefficient; F 02 represents the second response duration index coefficient;

[0093] A second comparison module, used for comparing the comprehensive index coefficient with a preset comprehensive coefficient threshold;

[0094] The abnormality determination and alarm module is used to determine that the processing response of the signal processing module is abnormal and issue an abnormality alarm when the comprehensive index coefficient exceeds a preset comprehensive coefficient threshold.

[0095] The technical effect of the above technical solution is: through the duration retrieval module and the second response duration index coefficient acquisition module, the technical solution can perform detailed response duration analysis for the encoding and decoding process, so as to more accurately identify potential anomalies. This fine detection capability helps to reduce false positives and false negatives and improve the stability of the system. The calculation of the second response duration index coefficient takes into account the number of encoding and decoding processes, the response duration of each process, the standard deviation of the processing response duration, and the maximum value. This comprehensive evaluation method can more accurately reflect the overall performance of the signal processing module in the encoding and decoding process. The comprehensive index coefficient acquisition module and the second comparison module combine the first response duration index coefficient and the second response duration index coefficient to obtain a comprehensive index coefficient for comprehensively evaluating the performance of the signal processing module. When the comprehensive index coefficient exceeds the preset threshold, the abnormal determination and alarm module will immediately issue an abnormal alarm so that the operation and maintenance personnel can take timely measures. Through real-time monitoring and fine abnormal detection, the technical solution can promptly discover and handle potential problems in the signal processing module, thereby avoiding its impact on the entire system. This helps to improve the reliability and stability of the system and ensure the normal operation of the system. Through in-depth analysis of the processing response time, the inefficient or redundant links that may exist in the signal processing module can be identified and optimized. This optimization can not only improve the efficiency of the signal processing module, but also reduce its energy consumption and cost. The various parameters in this technical solution (such as the preset index coefficient threshold, comprehensive coefficient threshold, etc.) can be adjusted according to actual needs to adapt to different application scenarios and performance requirements. This flexibility makes this technical solution have a wider application prospect.

[0096] In summary, this technical solution can significantly improve the reliability and stability of the signal processing module, optimize the signal processing process, and reduce energy consumption and costs through functions such as sophisticated anomaly detection, comprehensive performance evaluation, and comprehensive judgment and alarm.

[0097] Transceiver module, including:

[0098] The transmitting module is used to convert the differential signal into a high-frequency radio frequency signal, amplify and filter the high-frequency signal, and change the phase and transmission direction of the filtered differential signal;

[0099] The receiving module is used to adjust the phase of the differential signal, perform phase compensation on the received differential signal, and merge the signals of multiple differential signal sources after phase compensation into one transmission line.

[0100] Transmitter module, including:

[0101] The signal conversion module is used to convert the differential signal into a high-frequency RF signal. This process usually involves modulation techniques, such as orthogonal modulation and amplitude modulation, to ensure that the signal is suitable for wireless transmission, and amplify the high-frequency signal to enhance the signal amplitude and improve the transmission distance and quality.

[0102] The signal filtering module is used to filter the differential signal after the signal conversion and remove unnecessary frequency components to ensure the clarity and accuracy of the signal;

[0103] The transmitting phase shifter is used to receive the filtered differential signal and change the phase and transmission direction of the filtered differential signal to control the direction of the beam.

[0104] The transmitting phase shifter controls the phase of the signal by changing the phase of the signal. In wireless communication systems, the phase of the signal is an important parameter. The phase shifter can be used to accurately adjust the phase of the signal to meet different communication requirements. The transmitting phase shifter can be used to change the transmission direction of the signal. In the phased array antenna system, each element antenna is equipped with a phase shifter. By controlling the phase of each element, the signal can be transmitted and received in different directions, which improves the flexibility and efficiency of the system. The independent control capability of the transmitting phase shifter can be used to observe multiple targets. By adjusting the phase of each element, the observation task of multiple targets can be achieved.

[0105] The receiving module comprises:

[0106] A receiving phase shifter, used to adjust the phase of the differential signal and perform phase compensation on the received differential signal;

[0107] In wireless communication systems, the phase change of signals will affect the transmission quality and reception effect of signals. Through the receiving phase shifter, the phase of the signal can be accurately adjusted to ensure that the signal maintains the best phase relationship during transmission, thereby improving the stability and reliability of the signal. The receiving phase shifter can perform phase compensation on the received signal to eliminate the phase deviation caused by the transmission medium or environmental factors. This compensation mechanism helps to improve the signal-to-noise ratio of the signal, reduce interference and noise, and thus improve the overall performance of the communication system. Through precise phase adjustment and signal processing, the receiving phase shifter can significantly improve the communication quality of the wireless communication system, help the wireless communication system better adapt to complex environmental changes, and ensure that the signal can be stably transmitted under various conditions, thereby improving the stability and reliability of communication.

[0108] The receiving combiner is used to combine the signals of multiple differential signal sources after phase compensation into one transmission line, thereby reducing the number of transmission lines, reducing the complexity and cost of the system. While combining the signals, the receiving combiner can also achieve isolation between the signal sources to avoid mutual interference, and ensure the quality of the signal and the stability of the system. The receiving combiner can distribute the combined signal to multiple receiving ends to achieve signal sharing and expansion, and improve the flexibility and scalability of the system. The receiving combiner also has a signal amplification function, which can improve the transmission distance and quality of the signal. The working principle of the receiving combiner: The receiving combiner uses a specific circuit design to combine multiple independent signals into a shared transmission path, effectively improving the spectrum utilization, reducing signal interference, and allowing multiple users to communicate at the same time.

[0109] The transmitting power splitter and receiving combiner are both composed of a 180° bridge or balun. The transmitting phase shifter includes a transmitting phase shifter A and a transmitting phase shifter B. The receiving phase shifter includes a receiving phase shifter A and a receiving phase shifter B. The transmitting phase shifter and the receiving phase shifter are fixed phase shifters or electrically adjustable phase shifters. The user can manually or electrically adjust the transmitting phase shifter A and the transmitting phase shifter B, and observe the received signal-to-noise ratio at the same time to ensure that the receiving signal-to-noise ratio is as large as possible, that is, the useful signal power splitting and combining attenuation is as small as possible.

[0110] The signal transmission module comprises:

[0111] Transmitting orthogonal antennas, used to achieve energy conversion between high-frequency current and free-space waves in wireless communication systems, concentrate signal strength and reduce signal interference;

[0112] A receiving orthogonal antenna is used to convert electromagnetic waves in a wireless communication system into electrical signals to achieve differential signal reception of the wireless communication system;

[0113] The signal analysis module is used to further analyze the received differential signal, detect the quality and integrity of the differential signal, and ensure the accuracy of transmission.

[0114] The transmitting orthogonal antenna and the receiving orthogonal antenna are both dual-polarized orthogonal antennas with a polarization of ±45°. They can be various antenna types such as parabolic antennas, plate antennas, Yagi antennas, etc., as long as the polarization directions are orthogonal. Users can manually or electrically adjust the angles of the transmitting antenna and the receiving antenna to make the polarization directions of the transmitting and receiving antennas more accurate, so as to obtain a higher signal-to-noise ratio.

[0115] The functions of transmitting orthogonal antennas in wireless communication systems mainly include the following aspects:

[0116] The transmitting orthogonal antenna can realize the energy conversion between high-frequency current and free space wave. Specifically, the transmitting antenna converts the guided wave into free space wave and transmits the signal into free space in the form of radio wave. The orthogonal antenna has a certain directionality and can radiate electromagnetic waves in a direction to reduce interference and noise in other directions, thereby improving the stability and reliability of communication. By using orthogonal antennas, the signal strength can be concentrated, interference can be reduced, the clarity of the signal and the communication quality can be improved, and the stable transmission of the signal can be ensured.

[0117] The role of the receiving orthogonal antenna in the wireless communication system mainly includes converting electromagnetic waves in space into electrical signals to realize signal reception of the wireless communication system. The receiving orthogonal antenna converts electromagnetic waves of specific frequencies into electrical signals, which are then processed and analyzed and finally transmitted to the communication equipment. The receiving orthogonal antenna is directional and can concentrate signal strength, reduce interference, and improve signal clarity. Highly directional antennas can ensure that signals are mainly received in a specific direction, thereby improving the quality and stability of communication. The receiving orthogonal antenna can transmit or receive electromagnetic waves of specified polarization, that is, it has appropriate polarization. Polarization control ensures that the antenna can effectively receive electromagnetic waves of specific polarization, further improving the performance of the communication system.

[0118] Signal analysis module, including:

[0119] Extracting characteristic information from the received differential signal, the characteristic information including the frequency, amplitude and phase of the differential signal;

[0120] Setting multiple thresholds, which are used to distinguish valid signals from noise signals, and comparing the collected differential signals with the set thresholds;

[0121] If a certain feature of the differential signal exceeds a set threshold, the differential signal is determined to be a valid signal.

[0122] Valid signals can be effectively identified.

[0123] The wireless communication co-channel interference suppression method is applied in a wireless communication co-channel interference suppression system, and includes the following steps:

[0124] S1: The transmission signal is input from the transmission interface, and is divided into two differential paths after passing through the transmission power splitter. By using the transmission power splitter, the output signals of multiple signal sources can be synthesized and superimposed to achieve a stronger signal output. The signal can also be monitored and protected, and the input signal can be divided into multiple output signals. Each output signal can be monitored by a sensor, saving investment and cost;

[0125] S2: The signal is phase-shifted by the transmitting phase shifter A and the transmitting phase shifter B to obtain a differential signal, which is then transmitted through the transmitting orthogonal antenna. By using the transmitting orthogonal antenna, interference and noise in other directions can be reduced, thereby improving the stability and reliability of communication and ensuring stable signal transmission. By using the transmitting phase shifter to control the phase of the signal, the transmission direction of the signal can be changed, and the signal can be transmitted and received in different directions, thereby improving the flexibility and efficiency of the system.

[0126] S3: The receiving orthogonal antenna receives the differential signal. The receiving orthogonal antenna realizes the signal reception of the wireless communication system. The receiving orthogonal antenna converts the electromagnetic waves of a specific frequency into electrical signals. These electrical signals are then processed and analyzed, and finally transmitted to the communication equipment, which can concentrate the signal strength, reduce interference, and improve the clarity of the signal. The differential signal includes a useful signal and an interference signal. The differential signal is phase-shifted by the receiving phase shifter A and the receiving phase shifter B. By using the receiving phase shifter, the phase of the signal can be accurately adjusted to ensure that the signal maintains the best phase relationship during the transmission process, thereby improving the stability and reliability of the signal, reducing interference and noise, and thus improving the overall performance of the communication system;

[0127] S4: The phase-shifted signal continues to output the useful signal to the receiving interface after passing through the receiving combiner. The interference signal abuts against each other after passing through the receiving orthogonal antenna, the differential path and the receiving combiner. By using the receiving combiner, the signal sources can be isolated while the signals are combined to avoid mutual interference, thereby ensuring the signal quality and system stability, and improving the signal transmission distance and quality. The useful signal will not lose power after passing through the transmitting splitter and the receiving combiner, while the interference signal cancels each other after passing through the receiving orthogonal antenna, the differential path and the receiving combiner, thereby achieving the purpose of retaining the useful signal and suppressing the interference signal.

[0128] In summary, the wireless communication co-channel interference suppression system and method of the present invention can synthesize and superimpose the output signals of multiple signal sources by using a transmitting power divider to achieve a stronger signal output, and can also monitor and protect the signal, and divide the input signal into multiple output signals, each of which can be monitored by a sensor, saving investment and cost. By using a transmitting phase shifter to control the phase of the signal, the transmission direction of the signal can be changed to achieve the transmission and reception of the signal in different directions, thereby improving the flexibility and efficiency of the system. By using a receiving phase shifter, the phase of the signal can be accurately adjusted to ensure that the signal maintains the best phase relationship during the transmission process, thereby improving the stability and reliability of the signal, reducing interference and noise, and thus improving the overall performance of the communication system. Wireless communication can be achieved by using a receiving orthogonal antenna. The signal reception of the system can concentrate the signal strength, reduce interference, and improve the clarity of the signal. By using the transmitting orthogonal antenna, it can reduce interference and noise in other directions, thereby improving the stability and reliability of communication and ensuring the stable transmission of the signal. By using the receiving combiner, while combining the signals, it can also achieve isolation between signal sources to avoid mutual interference, ensure the quality of the signal and the stability of the system, and improve the transmission distance and quality of the signal. By controlling the phase difference of the useful signal and using the same phase of the interference signal, differential combining is performed during reception, thereby suppressing the interference signal and retaining the useful signal. The useful signal will not lose power after passing through the transmitting splitter and the receiving combiner, while the interference signals will cancel each other after passing through the receiving orthogonal antenna, the differential path and the receiving combiner, thereby achieving the purpose of retaining the useful signal and suppressing the interference signal.

[0129] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0130] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A wireless communication co-channel interference suppression system, characterized in that: include: The signal differential module is used to process the original signal entering the transmission interface and evenly distribute the input power of the original signal to multiple output ports, while testing the power balance and matching of different components in the wireless communication system circuit; The transceiver module is used to convert the differential signal into a high-frequency radio frequency signal, amplify and filter the high-frequency signal, change the phase and transmission direction of the filtered differential signal, perform phase compensation on the received differential signal, and merge the signals of multiple differential signal sources after phase compensation onto the transmission line; The communication module is used to realize the energy conversion between high-frequency current and free-space wave in the wireless communication system, concentrate the signal strength and reduce signal interference, realize the differential signal reception of the wireless communication system, further analyze the received differential signal, and detect the quality and integrity of the differential signal.

2. The wireless communication co-channel interference suppression system according to claim 1, characterized in that: The signal differential module comprises: The signal processing module is used to modulate, demodulate, encode and decode the original signal entering the transmission interface; The transmitting interface is used to receive the original signal processed by the signal processing module and send the original signal to the transmitting power splitter; The transmitting power divider is used to evenly distribute the input power of the original signal to multiple output ports, and at the same time test the power balance and matching of different components in the wireless communication system circuit.

3. The wireless communication co-channel interference suppression system according to claim 2, characterized in that: The signal differential module further includes: The duration monitoring module is used to monitor in real time the processing response duration of each signal processing process corresponding to the modulation and demodulation of the signal processing module; The first response time index coefficient acquisition module is used to acquire the first response time index coefficient according to the processing response time of each signal processing process of the signal processing module; wherein the first response time index coefficient is acquired by the following formula: Among them, F 01 represents the first response time index coefficient; n represents the number of modulation processing times of the signal processing module; m represents the number of modulation processing times of the signal processing module; T 01i represents the processing response time corresponding to the i-th modulation process; T 02i represents the processing response time corresponding to the i-th demodulation process; T c01 represents the preset modulation processing response time reference value; T c02 Indicates the preset reference value of the response time of the demodulation process; T 01b represents the standard deviation of the processing response time corresponding to n modulation processes; T 02b represents the standard deviation of the processing response time corresponding to m demodulation processes; A first comparison module, used for comparing the first response time index coefficient with a preset index coefficient threshold; The abnormality determination module is used to determine whether the signal processing module processes a response abnormality when the first response time index coefficient exceeds a preset index coefficient threshold.

4. The wireless communication co-channel interference suppression system according to claim 3, characterized in that: The abnormality determination module comprises: A duration retrieving module, configured to retrieve the processing response duration of each signal processing process corresponding to encoding and decoding when the first response duration index coefficient exceeds a preset index coefficient threshold; A second response time index coefficient acquisition module, used to acquire a second response time index coefficient by using the processing response time of each signal processing process corresponding to the encoding and decoding; The second response time index coefficient is obtained by the following formula: Among them, F 02 represents the second response time index coefficient; k represents the number of encoding processing times of the signal processing module; g represents the number of decoding processing times of the signal processing module; T 03i represents the processing response time corresponding to the i-th encoding process; T 04i represents the processing response time corresponding to the i-th decoding process; T 03b represents the standard deviation of the processing response time corresponding to k encoding processes; T 04b represents the standard deviation of the processing response time corresponding to g decoding processes; T 03max represents the maximum processing response time corresponding to k encoding processes; T 04max Indicates the maximum processing response time corresponding to g decoding processes; A comprehensive index coefficient acquisition module, configured to acquire a comprehensive index coefficient by using the first response time index coefficient and the second response time index coefficient; The comprehensive index coefficient is obtained by the following formula: Among them, F represents the comprehensive index coefficient; F 01 Represents the first response time index coefficient; F 02 represents the second response duration index coefficient; A second comparison module, used for comparing the comprehensive index coefficient with a preset comprehensive coefficient threshold; The abnormality determination and alarm module is used to determine that the processing response of the signal processing module is abnormal and issue an abnormality alarm when the comprehensive index coefficient exceeds a preset comprehensive coefficient threshold.

5. The wireless communication co-channel interference suppression system according to claim 1, characterized in that: The transceiver module comprises: The transmitting module is used to convert the differential signal into a high-frequency radio frequency signal, amplify and filter the high-frequency signal, and change the phase and transmission direction of the filtered differential signal; The receiving module is used to adjust the phase of the differential signal, perform phase compensation on the received differential signal, and merge the signals of multiple differential signal sources after phase compensation into one transmission line.

6. The wireless communication co-channel interference suppression system according to claim 5, characterized in that: The transmitting module comprises: Signal conversion module, used to convert differential signals into high-frequency RF signals and amplify high-frequency signals A signal filtering module is used to filter the differential signal after the signal conversion is completed to remove unnecessary frequency components; The transmitting phase shifter is used to receive the filtered differential signal and change the phase and transmission direction of the filtered differential signal. The transmitting phase shifter includes a transmitting phase shifter A and a transmitting phase shifter B.

7. The wireless communication co-channel interference suppression system according to claim 5, characterized in that: The receiving module comprises: A receiving phase shifter, used for adjusting the phase of the differential signal and performing phase compensation on the received differential signal, the receiving phase shifter comprising a receiving phase shifter A and a receiving phase shifter B; The receiving combiner is used to combine the signals of multiple differential signal sources after phase compensation into one transmission line.

8. The wireless communication co-channel interference suppression system according to claim 1, characterized in that: The signal transmission module comprises: Transmitting orthogonal antennas, used to achieve energy conversion between high-frequency current and free-space waves in wireless communication systems, concentrate signal strength and reduce signal interference; The receiving orthogonal antenna is used to convert the electromagnetic waves in the wireless communication system into electrical signals to realize the differential signal reception of the wireless communication system. The transmitting orthogonal antenna and the receiving orthogonal antenna are both dual-polarized orthogonal antennas with a polarization of ±45°; The signal analysis module is used to further analyze the received differential signal and detect the quality and integrity of the differential signal.

9. The wireless communication co-channel interference suppression system according to claim 1, characterized in that: The signal analysis module comprises: Extracting characteristic information from the received differential signal, the characteristic information including the frequency, amplitude and phase of the differential signal; Setting multiple thresholds and comparing the collected differential signal with the set thresholds; If the characteristic of the differential signal exceeds the set threshold, the differential signal is determined to be a valid signal.

10. A method for suppressing co-channel interference in wireless communication, implemented based on the system for suppressing co-channel interference in wireless communication according to claim 9, characterized in that: The following steps are involved: S1: The transmit signal is input from the transmit interface and is divided into two differential paths after passing through the transmit power divider; S2: The signal is phase-shifted by the transmitting phase shifter A and the transmitting phase shifter B to obtain a differential signal, and the differential signal is transmitted through the transmitting orthogonal antenna; S3: The receiving orthogonal antenna receives the differential signal, and the differential signal is phase-shifted by receiving phase shifter A and receiving phase shifter B; S4: The phase-shifted signal passes through the receiving combiner and then continues to output the useful signal to the receiving interface. The interference signals cancel each other out after passing through the receiving orthogonal antenna, the differential path and the receiving combiner.

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