CN112398494A - Router, interference elimination device and method thereof, and storage medium - Google Patents
Router, interference elimination device and method thereof, and storage medium Download PDFInfo
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- CN112398494A CN112398494A CN201910760779.XA CN201910760779A CN112398494A CN 112398494 A CN112398494 A CN 112398494A CN 201910760779 A CN201910760779 A CN 201910760779A CN 112398494 A CN112398494 A CN 112398494A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/60—Router architectures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The embodiment of the invention provides a router and an interference elimination device, method and storage medium thereof, wherein a communication signal receiving module is used for receiving a communication signal and sending the communication signal to a signal noise reduction processing module; the interference signal acquisition module is used for acquiring a second interference signal and sending the second interference signal to the signal noise reduction processing module; the signal noise reduction processing module is used for carrying out cancellation processing on the first interference signal in the communication signal according to the second interference signal to obtain the noise-reduced communication signal. The method and the device can achieve the purpose that the pure communication signals are obtained after the communication signals received by the router are subjected to interference signal cancellation processing, so that the pure signals can be normally demodulated in the receiver. The invention solves the problems of signal to noise ratio reduction and signal demodulation distortion caused by the interference of environmental noise and mainboard noise to signals, thereby effectively enhancing the demodulation capability and communication capability of the signals, simultaneously avoiding the investigation of interference sources and saving manpower and material resources.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to but not limited to a router, an interference elimination device and method thereof, and a storage medium.
Background
At present, almost every family has a plurality of electronic devices such as computers and mobile phones, a network becomes an indispensable virtual substance for every family, the requirement of daily internet surfing is met through a wireless network of a family router to obtain some important data, the wireless performance determines the internet surfing speed and quality, and the router with excellent performance can greatly improve the living and working efficiency of people. At present, a router is influenced by external environment noise and possible internal equipment noise, so that the demodulation quality and the receiving sensitivity of signals are reduced, and the signals are submerged in the noise seriously, so that the received signals cannot be demodulated; simultaneously, because the function on the mainboard is more, various frequency and signal superpose each other for the noise step increases, and signal that wifi received submerges in the noise, leads to the unable correct demodulation of signal.
At present, the interference or noise in a mainboard caused by a router is eliminated by checking peripheral equipment such as DDR or PCIE on the mainboard, and for the interference, the common method which can be solved by the router is to replace frequency points or reduce the driving level of the DDR and the like to reduce or weaken the interference, but some frequency points cannot be changed, and once the frequency points are changed, the performance is greatly influenced. For these methods, a large amount of manpower and material resources are needed to investigate the interference source, and finally, the interference cannot be perfectly solved completely.
Disclosure of Invention
The router, the interference elimination device, the interference elimination method and the storage medium thereof mainly solve the technical problem that distortion or packet loss always occurs to signals received by the router in the demodulation process due to the influence of environmental noise and mainboard noise. To solve the above technical problem, an embodiment of the present invention provides an interference cancellation apparatus for a router, including: the device comprises a communication signal receiving module, an interference signal acquisition module and a signal noise reduction processing module;
the communication signal receiving module is used for receiving the communication signal and sending the communication signal to the signal noise reduction processing module;
the interference signal acquisition module is used for acquiring a second interference signal and sending the second interference signal to the signal noise reduction processing module;
the signal noise reduction processing module is used for carrying out cancellation processing on the first interference signal in the communication signal according to the second interference signal to obtain the noise-reduced communication signal.
In order to solve the above technical problem, an embodiment of the present invention further provides an interference cancellation method for a router, including sending a received communication signal to a signal noise reduction processing module through a communication signal receiving module;
sending the acquired second interference signal to a signal noise reduction processing module through an interference signal acquisition module;
and the signal noise reduction processing module cancels the first interference signal in the communication signal according to the second interference signal to obtain the noise-reduced communication signal.
To solve the foregoing technical problem, an embodiment of the present invention further provides a router, including: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute one or more computer programs stored in the memory to implement the steps of the interference cancellation method described above.
To solve the above technical problem, an embodiment of the present invention further provides a computer-readable storage medium storing one or more computer programs, where the one or more computer programs are executable by one or more processors to implement the steps of the interference cancellation method described above.
The invention has the beneficial effects that:
according to the router and the interference elimination device, method and storage medium thereof provided by the embodiment of the invention, the communication signal receiving module is used for receiving the communication signal and sending the communication signal to the signal noise reduction processing module; the interference signal acquisition module is used for acquiring an interference signal and sending the interference signal to the signal noise reduction processing module; the signal noise reduction processing module is used for carrying out cancellation processing on the first interference signal in the communication signal according to the second interference signal to obtain a communication signal after noise reduction, and can realize the purpose of carrying out cancellation processing on the interference signal of the communication signal received by the router to obtain a pure communication signal, and the pure signal can be normally demodulated in the receiver.
Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a block diagram of an interference cancellation apparatus of a router according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a wiener filter according to a first embodiment of the invention;
FIG. 3 is a schematic diagram of an adaptive filter according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram of a transversal FIR filter according to a first embodiment of the present invention;
fig. 5 is a block diagram of a path in an interference cancellation apparatus of a router according to a first embodiment of the present invention;
fig. 6 is a block diagram of a path in an interference cancellation apparatus of another router according to a first embodiment of the present invention;
fig. 7 is a schematic diagram of an interference cancellation apparatus of a specific router according to a second embodiment of the present invention;
fig. 8 is a schematic diagram of an interference cancellation apparatus of a specific router according to a third embodiment of the present invention;
fig. 9 is a flowchart illustrating an interference cancellation method for a router according to a fourth embodiment of the present invention;
fig. 10 is a schematic structural diagram of a router according to a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
in order to solve the problem that a received signal is distorted or lost in a demodulation process due to the influence of environmental noise and mainboard noise on a relevant router, an embodiment of the present invention provides an interference cancellation apparatus for a router. Referring to fig. 1, the interference cancellation apparatus specifically includes: a communication signal receiving module 100, an interference signal collecting module 110 and a signal noise reduction processing module 120.
A communication signal receiving module 100, configured to receive a communication signal and send the communication signal to the signal noise reduction processing module 120;
it should be noted that the communication signal received by the communication signal receiving module 100 includes a useful signal and a first interference signal, where the strength of the useful signal is strong. It is understood that the useful signal and the first interference signal are mixed together as the input signal of the signal noise reduction processing module 120.
The interference signal acquisition module 110 is configured to acquire a second interference signal and send the second interference signal to the signal noise reduction processing module 120;
it should be understood that the interference signal collection module 110 includes at least one of an environmental interference signal collection module and a motherboard interference signal collection module, the environmental interference signal collection module is used for collecting an environmental interference signal of the router, and the motherboard interference signal collection module is used for collecting a motherboard interference signal inside the router. In some embodiments, the interference signal acquisition module includes an environmental interference signal acquisition module and a motherboard interference signal acquisition module, and the second interference signal includes an environmental interference signal and a motherboard interference signal.
It should be understood that the environmental interference signal acquisition module mainly receives the environmental interference signal, and simultaneously receives a part of the useful signal with weak strength. The above-mentioned environmental interference signal and the main board interference signal are superimposed to generate a total second interference signal, and the interference signal acquisition module 110 sends the second interference signal to the signal noise reduction processing module 120, so that the second interference signal is used as a reference input signal of the signal noise reduction processing module 120.
The signal noise reduction processing module 120 performs cancellation processing on the first interference signal in the communication signal according to the second interference signal to obtain a communication signal after noise reduction is performed.
It should be noted that the signal noise reduction processing module 120 includes, but is not limited to, any of the following: a wiener filter, an adaptive filter, and a transversal FIR filter.
Optionally, when the signal denoising processing module 120 includes a wiener filter, please refer to fig. 2, where x (n) is a communication signal, q (n) is an interference signal, and y (n) is an output signal, the interference signal in the communication signal can be minimized by the wiener filter, so that the obtained output signal is a pure communication signal.
Optionally, when the signal noise reduction processing module 120 includes an adaptive filter, the adaptive filter generates a first tap coefficient according to the second interference signal; the signal noise reduction processing module 120 performs cancellation processing on a first interference signal in the communication signal at the first time according to the first tap coefficient to obtain a communication signal subjected to noise reduction for the first time; the communication signal after the first noise reduction is used as negative feedback to enable the adaptive filter to generate a second tap coefficient; the signal noise reduction processing module 120 performs cancellation processing on the first interference signal in the communication signal at the second moment according to the second tap coefficient to obtain a communication signal subjected to noise reduction for the second time, and outputs the communication signal subjected to noise reduction for the nth time until the communication signal subjected to noise reduction for the nth time is a stable value. Referring to fig. 3, the principle of the adaptive filter is: x1(N), x2(N), x3 (N.) xn (N) is any set of communication signals, w (N) is the tap coefficient of the adaptive filter, N is the order of the adaptive filter, y (N) is the output signal, d (N) is the desired signal, e (N) is the error signal, e (N) is d (N) -y (N). The adaptive filter automatically adjusts the tap coefficients w (n) to fit the input signal at the next time based on the value of the error signal e (n) to make the output signal closer to the desired signal until the mean square error reaches a minimum value. The noise reduction processing by the adaptive filter outputs a communication signal gradually approaching the desired signal, i.e., the purity of the output communication signal is gradually increased until the purity reaches a stable value.
Optionally, when the signal denoising module 120 includes a transversal FIR filter, please refer to fig. 4, where x (N), x (N-1), and x (N-2.) the x (N-N +1) are different delay components of the same communication signal, w (N) is a tap coefficient of the transversal FIR filter, N is an order of the transversal FIR filter, y (N) is an output signal, d (N) is a desired signal, and e (N) is an error signal e (N) -d (N) -y (N). For the transversal FIR filter, the tap coefficients are adaptively adjusted according to the error signal e (n) to fit the input signal at the next time instant, so that the output signal is closer to the desired signal. Through continuous adjustment of self-adaptation, the mean square error of the transversal FIR filter gradually decreases, and when the mean square error does not decrease significantly, this time indicates that the filter has converged to a stable value, and in the case of minimum mean square error, the output y (n) of the transversal FIR filter is the optimal approximation value of the expected d (n). Finally, the transverse FIR filter is used for outputting signals after the first interference signals in each communication signal are reduced to the minimum, and therefore, pure communication signals can be obtained after noise reduction.
For the interference cancellation apparatus of the router, optionally, a signal-to-noise separation module is further included. The signal-noise separation module is used for separating the useful signal in the second interference signal; the interference signal collection module 110 sends the collected second interference signal to the signal noise reduction processing module 120 through the signal-noise separation module.
Optionally, the signal-to-noise separation module includes a power dividing unit 501, a phase delay unit 503, and a combining unit 502. The power dividing unit 501 is configured to divide the second interference signal into a first path of interference signal and a second path of interference signal; the phase delay unit 503 is configured to obtain a second delay bit interference signal after delaying the phase of the second path interference signal by 180 degrees, and send the second delay bit interference signal to the combining unit 502; the combining unit 502 is configured to separate the useful signal in the first path of interference signal and send the separated useful signal to the signal noise reduction processing module 120. In some embodiments, please refer to fig. 5, an input end of the combining unit 502 is connected to the interference signal acquisition module 110, and the power dividing unit 501 divides the interference signal received from the interference signal acquisition module 110 into two paths, one path is a first path of interference signal, and the other path is a second path of interference signal. The first path of interference signal enters the combining unit 502, the second path of interference signal enters the phase delay unit 503, and the second path of interference signal is sent to the combining unit 502 after being phase-delayed by 180 degrees by the phase delay unit 503. It should be understood that, the first path of interference signal and the second path of interference signal both include a useful signal, and the strength of the useful signal is weaker than that of the second path of interference signal, and after the second path of interference signal passes through the phase delay unit for 180 degrees, the useful signal can be converted into a negative useful signal due to the regularity of the useful signal, so as to obtain the second path of delay interference signal. The first interference signal and the second delay interference signal are superimposed in the combining unit 502 to cancel the useful signal, so as to obtain a pure second interference signal.
Optionally, the signal-to-noise separation module further includes an amplifying unit 504, and the second delay interference signal is amplified by the amplifying unit 504 and then sent to the combining unit 502.
Referring to fig. 6, the power dividing unit 501 divides the second interference signal received from the interference signal collecting module 110 into two paths, one path is the first interference signal, and the other path is the second interference signal. The first interference signal enters the combining unit 502, the second interference signal enters the phase delay unit 503, the second interference signal is phase-delayed by 180 degrees by the phase delay unit 503 and then enters the amplifying unit 504, and then is sent to the combining unit 502 after being amplified by the amplifying unit 504, and finally the useful signal amplitude in the second interference signal is reduced to the minimum by the combining unit 502 and then is sent to the signal noise reduction processing module 120.
The interference elimination device of the router provided by the embodiment of the invention is used for receiving the communication signal through the communication signal receiving module and sending the communication signal to the signal noise reduction processing module; the interference signal acquisition module is used for acquiring a second interference signal and sending the second interference signal to the signal noise reduction processing module; the signal noise reduction processing module is used for carrying out offset processing on a first interference signal in the communication signal according to a second interference signal to obtain the communication signal after noise reduction, effectively removing external interference on the signal to cause demodulation distortion of the signal, and enhancing the very strong communication capability of the router.
Example two:
in order to solve the problem that the received signal is distorted or lost in the demodulation process due to the influence of the environmental noise and the main board noise of the relevant router, an embodiment of the present invention provides a specific interference cancellation device for a router, and please refer to fig. 7, fig. 7 is a schematic diagram of a specific interference cancellation device for a router according to an embodiment of the present invention. The communication signal receiving module 100 is configured to receive a communication signal and send the communication signal to the signal noise reduction processing module 120. The communication signal received by the communication signal receiving module 100 includes a useful signal and a first interference signal, wherein the strength of the useful signal is strong. That is, the useful signal and the first interference signal are mixed together as the input signal of the signal noise reduction processing module 120. And the interference signal collecting module 110 is configured to collect a second interference signal and send the second interference signal to the signal denoising processing module 120. Optionally, the interference signal acquisition module 110 further includes an environmental interference signal acquisition module and a motherboard interference signal acquisition module, where the environmental interference signal acquisition module mainly receives an environmental noise signal and also receives a part of useful signals with weak strength. The above-mentioned ambient noise signal and the main board noise signal are superimposed to generate a total second interference signal, and the interference signal acquisition module 110 sends the second interference signal to the signal noise reduction processing module 120, so that the second interference signal is used as a reference input signal of the signal noise reduction processing module 120. The signal noise reduction processing module 120 includes a transversal FIR filter. As shown in fig. 4, the operation principle of the transversal FIR filter is: x (N), x (N-1), x (N-2), x (N-N +1) are different delay components of the same communication signal, w (N) is a tap coefficient of the transversal FIR filter, N is an order of the transversal FIR filter, y (N) is an output signal, d (N) is a desired signal, e (N) is an error signal, and e (N) is an error signal, e (N) is d (N) -y (N). For the transversal FIR filter, the tap coefficients are adaptively adjusted according to the error signal e (n) to fit the input signal at the next time instant, so that the output signal is closer to the desired signal. Through continuous adjustment of self-adaptation, the mean square error of the transversal FIR filter gradually decreases, and when the mean square error does not decrease significantly, this time indicates that the filter has converged to a stable value, and in the case of minimum mean square error, the output y (n) of the transversal FIR filter is the optimal approximation value of the expected d (n). Therefore, the transverse FIR filter is used for outputting signals after the first interference signal in each communication signal is reduced to the minimum, and pure communication signals can be obtained after noise reduction. The transceiving channel 700 then down-converts and demodulates the clean communication signal.
The interference elimination device of the router provided by the embodiment of the invention is used for receiving the communication signal through the communication signal receiving module and sending the communication signal to the signal noise reduction processing module; the interference signal acquisition module is used for acquiring a second interference signal and sending the second interference signal to the signal noise reduction processing module; the signal noise reduction processing module is used for carrying out offset processing on a first interference signal in the communication signal according to a second interference signal to obtain the communication signal after noise reduction, effectively removing external interference on the signal to cause demodulation distortion of the signal, and enhancing the very strong communication capability of the router.
Example three:
in order to solve the problem that the received signal is distorted or lost in the demodulation process due to the influence of the environmental noise and the main board noise of the relevant router, an embodiment of the present invention provides a specific interference cancellation apparatus for a router, please refer to fig. 8. The device comprises a communication signal receiving module 100, an interference signal collecting module 110, a signal noise reduction processing module 120 and a signal noise separating module.
The communication signal receiving module 100 is configured to receive a communication signal and send the communication signal to the signal noise reduction processing module 120. The communication signal received by the communication signal receiving module 100 includes a useful signal and a first interference signal, wherein the strength of the useful signal is strong. That is, the useful signal and the first interference signal are mixed together as the input signal of the signal noise reduction processing module 120. The interference signal acquisition module 110 sends the acquired second interference signal to the signal noise reduction processing module 120 through the signal-noise separation module; after receiving the second interference signal, the signal-to-noise separation module separates a useful signal in the second interference signal and sends the separated useful signal to the signal noise reduction processing module 120. Wherein the signal-to-noise separation module includes: power dividing section 501, phase delay section 503, combining section 502 and amplifying section 504. The power dividing unit 501 divides the second interference signal received from the interference signal collecting module 110 into two paths, one path is the first interference signal, and the other path is the second interference signal. The first path of interference signal enters the combining unit 502, the second path of interference signal enters the phase delay unit 503, and the second path of interference signal is sent to the combining unit 502 after being phase-delayed by 180 degrees by the phase delay unit 503. It should be understood that, the first path of interference signal and the second path of interference signal both include a useful signal, and the strength of the useful signal is weaker than that of the second path of interference signal, and after the second path of interference signal passes through the phase delay unit for 180 degrees, the useful signal can be converted into a negative useful signal due to the regularity of the useful signal, and the second path of delay interference signal can be obtained. The first interference signal and the second delay interference signal are superimposed in the combining unit 502 to cancel the useful signal, so as to obtain a pure second interference signal. And the signal noise reduction processing module 120 includes a transversal FIR filter. As shown in fig. 4, the operation principle of the transversal FIR filter is: x (N), x (N-1), x (N-2), x (N-N +1) are different delay components of the same communication signal, w (N) is a tap coefficient of the transversal FIR filter, N is an order of the transversal FIR filter, y (N) is an output signal, d (N) is a desired signal, e (N) is an error signal, and e (N) is an error signal, e (N) is d (N) -y (N). For the transversal FIR filter, the tap coefficients are adaptively adjusted according to the error signal e (n) to fit the input signal at the next time instant, so that the output signal is closer to the desired signal. Through continuous adjustment of self-adaptation, the mean square error of the transversal FIR filter gradually decreases, and when the mean square error does not decrease significantly, this time indicates that the filter has converged to a stable value, and in the case of minimum mean square error, the output y (n) of the transversal FIR filter is the optimal approximation value of the expected d (n). Therefore, the transverse FIR filter is used for outputting signals after the first interference signal in each communication signal is reduced to the minimum, and pure communication signals can be obtained after noise reduction. The transceiving channel 700 then down-converts and demodulates the clean communication signal.
The interference elimination device of the router provided by the embodiment of the invention is used for receiving the communication signal through the communication signal receiving module and sending the communication signal to the signal noise reduction processing module; the interference signal acquisition module is used for acquiring a second interference signal and sending the second interference signal to the signal noise reduction processing module; the signal noise reduction processing module is used for carrying out cancellation processing on a first interference signal in the communication signal according to a second interference signal to obtain a noise-reduced communication signal; the interference signal acquisition module sends the acquired second interference signal to the signal noise reduction processing module through the signal-noise separation module; and after receiving the second interference signal, the signal-noise separation module separates a useful signal in the second interference signal and sends the useful signal to the signal noise reduction processing module. The device has the advantages that the demodulation distortion of signals caused by the interference of the outside to the signals is effectively removed, the strong communication capacity of the router can be enhanced, the device has anti-interference performance and practicability, and the problem that the signal-to-noise ratio is reduced due to the signal interference caused by the noise in the mainboard can be solved.
Example four:
in order to solve the problem that a received signal is distorted or lost in a demodulation process due to the influence of environmental noise and mainboard noise on a relevant router, the embodiment of the invention provides a flow diagram of an interference elimination method of a router. Referring to fig. 9, the interference cancellation method specifically includes the following steps:
s901, sending the received communication signal to a signal noise reduction processing module through a communication signal receiving module;
the communication signal received by the communication signal receiving module comprises a useful signal and a first interference signal, wherein the strength of the useful signal is strong. It is understood that the useful signal and the first interference signal are mixed together as input signals of the signal noise reduction processing module.
S902, sending the acquired second interference signal to a signal noise reduction processing module through an interference signal acquisition module;
it should be noted that the interference signal acquisition module includes at least one of an environmental interference signal acquisition module and a motherboard interference signal acquisition module, the environmental interference signal acquisition module is used for acquiring an environmental interference signal of the router, and the motherboard interference signal acquisition module is used for acquiring a motherboard interference signal inside the router. In some embodiments, the interference signal acquisition module includes an environmental interference signal acquisition module and a motherboard interference signal acquisition module, and the second interference signal includes an environmental interference signal and a motherboard interference signal. It should be understood that the environmental interference signal acquisition module mainly receives the environmental interference signal, and simultaneously receives a part of the useful signal with weak strength. The environmental noise signal and the mainboard noise signal are superposed to generate a total second interference signal, and the interference signal acquisition module sends the second interference signal to the signal noise reduction processing module, so that the second interference signal is used as a reference input signal of the signal noise reduction processing module.
And S903, the signal noise reduction processing module cancels the first interference signal in the communication signal according to the second interference signal to obtain the noise-reduced communication signal.
It should be noted that the signal noise reduction processing module includes, but is not limited to, any of the following: a wiener filter, an adaptive filter, and a transversal FIR filter.
Optionally, when the signal denoising processing module includes a wiener filter, please refer to fig. 2, x (n) is a communication signal, q (n) is an interference signal, and y (n) is an output signal, the interference signal in the communication signal can be minimized by the wiener filter, so that the obtained output signal is a pure communication signal.
Optionally, when the signal denoising module includes an adaptive filter, please refer to fig. 3, where x1(N), x2(N), and x3(N). xn (N) is any set of communication signals, w (N) is a tap coefficient of the adaptive filter, N is an order of the adaptive filter, y (N) is an output signal, d (N) is a desired signal, and e (N) is an error signal, and the error signal e (N) ═ d (N) -y (N). The adaptive filter automatically adjusts the tap coefficients w (n) to fit the input signal at the next time based on the value of the error signal e (n) to make the output signal closer to the desired signal until the mean square error reaches a minimum value. The noise reduction processing by the adaptive filter outputs a communication signal gradually approaching the desired signal, i.e., the purity of the output communication signal is gradually increased until the purity reaches a stable value.
Optionally, when the signal denoising module includes a transversal FIR filter, please refer to fig. 4, where x (N), x (N-1), and x (N-2.) are different delay components of the same communication signal, w (N) is a tap coefficient of the transversal FIR filter, N is an order of the transversal FIR filter, y (N) is an output signal, d (N) is a desired signal, and e (N) is an error signal e (N) -d (N) -y (N). For the transversal FIR filter, the tap coefficients are adaptively adjusted according to the error signal e (n) to fit the input signal at the next time instant, so that the output signal is closer to the desired signal. Through continuous adjustment of self-adaptation, the mean square error of the transversal FIR filter gradually decreases, and when the mean square error does not decrease significantly, this time indicates that the filter has converged to a stable value, and in the case of minimum mean square error, the output y (n) of the transversal FIR filter is the optimal approximation value of the expected d (n). Finally, the transverse FIR filter is used for outputting signals after the first interference signals in each communication signal are reduced to the minimum, and therefore, pure communication signals can be obtained after noise reduction.
The embodiment of the invention provides an interference elimination method for a router, which is characterized in that a communication signal receiving module is used for receiving a communication signal and sending the communication signal to a signal noise reduction processing module; the interference signal acquisition module is used for acquiring a second interference signal and sending the second interference signal to the signal noise reduction processing module; the signal noise reduction processing module is used for carrying out offset processing on the first interference signal in the communication signal according to the second interference signal to obtain the communication signal after noise reduction, so that demodulation distortion of the signal caused by external interference on the signal is effectively removed, the very strong communication capacity of the router can be enhanced, the device has anti-interference performance and practicability, and the problem of signal to noise ratio reduction caused by signal interference caused by noise in a mainboard can be solved.
Example five:
the present embodiment provides a router, as shown in fig. 10, which includes a processor 111, a memory 112, and a communication bus 113, where:
the communication bus 113 is used for realizing connection communication between the processor 111 and the memory 112;
the processor 111 is configured to execute one or more computer programs stored in the memory 112 to implement the steps in the interference cancellation method in the embodiments described above.
The present embodiments provide a computer-readable storage medium including volatile or non-volatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
The computer-readable storage medium in this embodiment may be used to store one or more computer programs, and the stored one or more computer programs may be executed by a processor to implement the steps in the interference cancellation method in the embodiments described above.
The present embodiment also provides a computer program, which can be distributed on a computer readable medium and executed by a computing device to implement the steps in the interference cancellation method in the foregoing embodiments; and in some cases the steps shown or described may be performed in an order different than that described in the embodiments above.
The present embodiments also provide a computer program product comprising a computer readable means on which a computer program as shown above is stored. The computer readable means in this embodiment may include a computer readable storage medium as shown above.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. An interference cancellation apparatus for a router, comprising: the device comprises a communication signal receiving module, an interference signal acquisition module and a signal noise reduction processing module;
the communication signal receiving module is used for receiving a communication signal and sending the communication signal to the signal noise reduction processing module;
the interference signal acquisition module is used for acquiring a second interference signal and sending the second interference signal to the signal noise reduction processing module;
the signal noise reduction processing module is used for carrying out cancellation processing on the first interference signal in the communication signal according to the second interference signal to obtain a noise-reduced communication signal.
2. The interference cancellation apparatus of claim 1, wherein the interference signal acquisition module includes at least one of an environmental interference signal acquisition module and a motherboard interference signal acquisition module;
the environment interference signal acquisition module is used for acquiring an environment interference signal of the router;
the mainboard interference signal acquisition module is used for acquiring mainboard interference signals inside the router.
3. The interference cancellation apparatus of claim 2, wherein the interference signal acquisition module includes an environmental interference signal acquisition module and a motherboard interference signal acquisition module, and the second interference signal includes the environmental interference signal and a motherboard interference signal;
the interference cancellation device further comprises a signal-to-noise separation module, wherein the signal-to-noise separation module is used for separating a useful signal in the second interference signal;
and the interference signal acquisition module sends the acquired second interference signal to the signal noise reduction processing module through the signal-noise separation module.
4. The interference cancellation device of claim 3, wherein the signal-to-noise separation module comprises a power dividing unit, a phase delay unit, and a combining unit;
the power dividing unit is used for dividing the second interference signal into a first path of interference signal and a second path of interference signal;
the phase delay unit is used for delaying the phase of the second path of interference signal by 180 degrees to obtain a second path of delay interference signal and sending the second path of delay interference signal to the combining unit;
and the combining unit is used for separating the useful signals in the first path of interference signals and then sending the useful signals to the signal noise reduction processing module.
5. The interference cancellation device of claim 4, said signal-to-noise separation module further comprising an amplification unit;
and the amplifying unit is used for amplifying the second path of delay interference signal and then sending the amplified second path of delay interference signal to the combining unit.
6. The interference cancellation device of any one of claims 1-5, said signal noise reduction processing module comprising an adaptive filter;
the adaptive filter generates a first tap coefficient according to the second interference signal; the signal noise reduction processing module performs cancellation processing on a first interference signal in the communication signal at a first moment according to the first tap coefficient to obtain a communication signal subjected to noise reduction for the first time; the communication signal after the first noise reduction is used as negative feedback to enable the adaptive filter to generate a second tap coefficient; and the signal noise reduction processing module performs cancellation processing on the first interference signal in the communication signal at the second moment according to the second tap coefficient to obtain a communication signal subjected to noise reduction for the second time, and outputs the communication signal subjected to noise reduction for the nth time until the communication signal subjected to noise reduction for the nth time is a stable value.
7. The interference cancellation device of claim 6, said adaptive filter being a transversal FIR filter; the first time communication signal and the second time communication signal are different delay signals of the same communication signal.
8. An interference cancellation method for a router, comprising:
sending the received communication signal to a signal noise reduction processing module through a communication signal receiving module;
sending the acquired second interference signal to the signal noise reduction processing module through an interference signal acquisition module;
and the signal noise reduction processing module performs cancellation processing on the first interference signal in the communication signal according to the second interference signal to obtain a noise-reduced communication signal.
9. A router, comprising: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute one or more computer programs stored in the memory to implement the steps of the interference cancellation method of claim 8.
10. A computer-readable storage medium storage, characterized in that the computer-readable storage medium stores one or more computer programs, which are executable by one or more processors, to implement the steps of the interference cancellation method of claim 8.
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| CN201910760779.XA CN112398494B (en) | 2019-08-16 | 2019-08-16 | Router, interference elimination device, method and storage medium thereof |
| PCT/CN2020/103834 WO2021031787A1 (en) | 2019-08-16 | 2020-07-23 | Router and interference elimination apparatus and method thereof, and storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835368A (en) * | 2020-07-31 | 2020-10-27 | 海能达通信股份有限公司 | Zero intermediate frequency receiving system |
| CN113891278A (en) * | 2021-12-06 | 2022-01-04 | 成都中星世通电子科技有限公司 | Data acquisition and transmission method and system based on multi-hop cooperation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101166205A (en) * | 2007-09-21 | 2008-04-23 | 上海广电（集团）有限公司中央研究院 | A device and method for eliminating non related interference signals |
| CN102281044A (en) * | 2010-06-12 | 2011-12-14 | 澜起科技（上海）有限公司 | Blind adaptive filtering apparatus capable of eliminating narrowband interference and application thereof |
| US20120027142A1 (en) * | 2009-03-11 | 2012-02-02 | Aisin Seiki Kabushiki Kaisha | Device and method for reducing interference in received communication signals |
| CN102571655A (en) * | 2012-01-21 | 2012-07-11 | 华为技术有限公司 | Method and device for implementing interference cancellation and filters |
| US20150188736A1 (en) * | 2013-12-26 | 2015-07-02 | William Dawson Kesling | Radio front end interference cancellation using digital signals |
| CN106058464A (en) * | 2016-05-17 | 2016-10-26 | 深圳微迎智科技有限公司 | Adaptive antenna interference elimination apparatus, method and antenna array and communication device thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106210987A (en) * | 2016-07-29 | 2016-12-07 | 努比亚技术有限公司 | A kind of mobile terminal, noise reducing apparatus and noise-reduction method thereof |
| CN107135363A (en) * | 2017-07-13 | 2017-09-05 | 青岛海信电器股份有限公司 | A kind of backlight module and display terminal with radio communication function |
| CN109861703B (en) * | 2017-11-30 | 2020-09-18 | 华为技术有限公司 | Wireless device and wireless local area network signal receiving method |
| US10574312B2 (en) * | 2018-02-13 | 2020-02-25 | Nxp Usa, Inc. | Apparatus and methods for interference cancellation in multi-antenna receivers |
| CN109547920B (en) * | 2018-09-30 | 2020-09-08 | 西安电子科技大学 | WiFi indoor positioning system and method based on adaptive noise cancellation |
-
2019
- 2019-08-16 CN CN201910760779.XA patent/CN112398494B/en active Active
-
2020
- 2020-07-23 WO PCT/CN2020/103834 patent/WO2021031787A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101166205A (en) * | 2007-09-21 | 2008-04-23 | 上海广电（集团）有限公司中央研究院 | A device and method for eliminating non related interference signals |
| US20120027142A1 (en) * | 2009-03-11 | 2012-02-02 | Aisin Seiki Kabushiki Kaisha | Device and method for reducing interference in received communication signals |
| CN102281044A (en) * | 2010-06-12 | 2011-12-14 | 澜起科技（上海）有限公司 | Blind adaptive filtering apparatus capable of eliminating narrowband interference and application thereof |
| CN102571655A (en) * | 2012-01-21 | 2012-07-11 | 华为技术有限公司 | Method and device for implementing interference cancellation and filters |
| US20150188736A1 (en) * | 2013-12-26 | 2015-07-02 | William Dawson Kesling | Radio front end interference cancellation using digital signals |
| CN106058464A (en) * | 2016-05-17 | 2016-10-26 | 深圳微迎智科技有限公司 | Adaptive antenna interference elimination apparatus, method and antenna array and communication device thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111835368A (en) * | 2020-07-31 | 2020-10-27 | 海能达通信股份有限公司 | Zero intermediate frequency receiving system |
| CN113891278A (en) * | 2021-12-06 | 2022-01-04 | 成都中星世通电子科技有限公司 | Data acquisition and transmission method and system based on multi-hop cooperation |
| CN113891278B (en) * | 2021-12-06 | 2022-03-08 | 成都中星世通电子科技有限公司 | Data acquisition and transmission method and system based on multi-hop cooperation |
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| WO2021031787A1 (en) | 2021-02-25 |
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