CN107872235A - The method and apparatus for reducing signal interference in wireless lan communication lsi - Google Patents
The method and apparatus for reducing signal interference in wireless lan communication lsi Download PDFInfo
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- CN107872235A CN107872235A CN201710109708.4A CN201710109708A CN107872235A CN 107872235 A CN107872235 A CN 107872235A CN 201710109708 A CN201710109708 A CN 201710109708A CN 107872235 A CN107872235 A CN 107872235A
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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
- H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
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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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Abstract
The present invention relates to a kind of method and apparatus for reducing signal interference in wireless lan communication lsi, this method includes：Obtain the wireless communication signals gathered when opening the antenna of wireless lan communication lsi；Spectrum analysis is carried out to wireless communication signals, obtains the signal spectrum of wireless communication signals；By the signal spectrum of wireless communication signals compared with the signal spectrum of each noise signal in default noise model, the first interference signal in wireless communication signals is determined；According to the signal spectrum in default noise model with the immediate noise signal of the first interference signal, generation first offseting signal opposite with the immediate noise signal of the first interference signal；Wireless communication signals and the first offseting signal are handled, the wireless communication signals after being handled.This method need not increase device and do physical isolation to radio communication circuit and digital system circuit, and cost is low.
Description
Technical field
The present invention relates to technical field of electronic equipment, reduces signal in wireless lan communication lsi more particularly to one kind and does
The method and apparatus disturbed.
Background technology
At present, as Internet of Things and the high speed development of wearable technology, each electronic product lead to function to integrated wireless
SOC (on-chip system) demand is increasing, while to performance for wireless communications requirement also more and more higher.But radio communication is electric
Road, especially receiving circuit, it is very sensitive and fragile to all kinds of noise jammings.The main interference source of radio communication circuit is
Digital display circuit and all kinds of clock signals.The interference of digital display circuit and all kinds of clock signals passes through the mixing of receiving circuit, amplification etc.
Intermediate-freuqncy signal is delivered to behind path and then influences to receive the performance of demodulation.
The method for solving this one kind interference at present mainly has and does physical isolation to radio communication circuit and digital system circuit
To avoid the generation of interference signal, this provides for improved the cost of electronic product.
The content of the invention
Based on this, it is necessary to provide a kind of cost the low method and dress that reduce signal interference in wireless lan communication lsi
Put.
A kind of method of signal interference in reduction wireless lan communication lsi, including：
Obtain the wireless communication signals gathered when opening the antenna of wireless lan communication lsi；
Spectrum analysis is carried out to the wireless communication signals, obtains the signal spectrum of the wireless communication signals；
By the signal spectrum of each noise signal in the signal spectrum of the wireless communication signals and default noise model
It is compared, determines the first interference signal in the wireless communication signals；
According to the signal spectrum in default noise model with the immediate noise signal of the first interference signal, generation
First offseting signal opposite with the immediate noise signal of the first interference signal；
The wireless communication signals and first offseting signal are handled, the radio communication letter after being handled
Number.
The device of signal interference in a kind of reduction wireless lan communication lsi, including：
Noise model, for prestoring noise signal；
Acquisition module, for obtaining the wireless communication signals gathered when opening the antenna of wireless lan communication lsi；
First analysis module, for carrying out spectrum analysis to the wireless communication signals, obtain the wireless communication signals
Signal spectrum, and by the signal of each noise signal in the signal spectrum of the wireless communication signals and default noise model
Frequency spectrum is compared, and determines the first interference signal in the wireless communication signals；
Offseting signal generation module, for according in default noise model with first interference signal is immediate makes an uproar
The signal spectrum of acoustical signal, generation first offseting signal opposite with the immediate noise signal of the first interference signal；
Signal processing module, for handling the wireless communication signals and first offseting signal, obtain everywhere
Wireless communication signals after reason.
The above-mentioned method for reducing signal interference in wireless lan communication lsi, because the first offseting signal is according to default
Noise model in the generation of immediate with the first interference signal noise signal with immediate noise signal opposite signal, and
What is stored in noise model is according to the feature for the regular noise for having had experience intermediate-freuqncy signal to be subject to, therefore, root
According to the signal spectrum in default noise model with the immediate noise signal of the first interference signal, can be quickly generated with most
The first opposite offseting signal of close noise signal, while can avoid generating inappropriate offseting signal.By being superimposed nothing
Line signal of communication and the first offseting signal, it farthest can reduce or offset the first interference letter in wireless communication signals
Number, so as to reduce or eliminate interference of the interference signal to the useful signal in wireless communication signals.This method need not increase device
Physical isolation is done to radio communication circuit and digital system circuit, cost is low.
Brief description of the drawings
Fig. 1 is the flow chart for reducing the method for signal interference in wireless lan communication lsi of one embodiment；
Fig. 2 is the flow chart for reducing the method for signal interference in wireless lan communication lsi of another embodiment；
Fig. 3 is the flow chart for reducing the method for signal interference in wireless lan communication lsi of further embodiment；
Fig. 4 is the structural representation for reducing the device of signal interference in wireless lan communication lsi of one embodiment；
Fig. 5 is the structural representation for reducing the device of signal interference in wireless lan communication lsi of another embodiment；
Fig. 6 is the structural representation for reducing the device of signal interference in wireless lan communication lsi of further embodiment.
Embodiment
As shown in figure 1, a kind of method for reducing signal interference in wireless lan communication lsi comprises the following steps：
S102：Obtain the wireless communication signals gathered when opening the antenna of wireless lan communication lsi.
Specifically, wireless lan communication lsi is opened, opens antenna, gathers wireless communication signals.The radio communication of collection
Intermediate-freuqncy signal is treated as behind the paths such as the mixing of the received circuit of signal, amplification.The present invention is by intermediate-freuqncy signal
Reason, to reduce the interference of the intermediate frequency in wireless lan communication lsi.
S104：Spectrum analysis is carried out to wireless communication signals, obtains the signal spectrum of wireless communication signals.
Signal spectral analysis is that the signal intensity for sending signal source is deployed by frequency order, becomes the letter of frequency
Number, and changing rule is investigated, referred to as spectrum analysis.Spectrum analysis Main Analysis signal is the sinusoidal signal superposition by which frequency
Obtain, and the amplitude of these sinusoidal signals.
DFT (Discrete Fourier Transform, discrete fourier can be used alone or in combination in signal spectral analysis
Conversion)/FFT (fast Fourier transform, Fast Fourier Transformation), wave detector or according to useful signal feature
The methods of doing specific related operation, extract the information such as the phases of wireless communication signals, amplitude, frequency, frequency, bandwidth.
S106：By the signal spectrum of each noise signal in the signal spectrum of wireless communication signals and default noise model
It is compared, determines the first interference signal in wireless communication signals.
The spy according to the regular noise for having had experience intermediate-freuqncy signal to be subject to is stored in default noise model
Sign, by the signal spectrum of wireless communication signals compared with the signal spectrum of each noise signal in default noise model,
If being approached with the signal spectrum of wherein any one noise signal, the signal that frequency is corresponded in wireless communication signals is defined as
First interference signal.
S108：It is raw according to the signal spectrum in default noise model with the immediate noise signal of the first interference signal
Into first offseting signal opposite with the immediate noise signal of the first interference signal.
Because what is stored in noise model is according to the regular noise for having had experience intermediate-freuqncy signal to be subject to
Feature, therefore, can be fast according to the signal spectrum in default noise model with the immediate noise signal of the first interference signal
First offseting signal opposite with immediate noise signal is generated fastly, while can avoid generating inappropriate counteracting letter
Number.
S110：Wireless communication signals and the first offseting signal are handled, the wireless communication signals after being handled.
Wireless communication signals include useful signal and the first interference signal, and the first offseting signal is according to default noise
In model the generation of immediate with the first interference signal noise signal with immediate noise signal opposite signal, therefore, lead to
Cross and wireless communication signals and the first offseting signal are handled, farthest can reduce or offset in wireless communication signals
The first interference signal, so as to reduce or eliminate interference of the interference signal to the useful signal in wireless communication signals.
The above-mentioned method for reducing signal interference in wireless lan communication lsi, because the first offseting signal is according to default
Noise model in the generation of immediate with the first interference signal noise signal with immediate noise signal opposite signal, and
What is stored in noise model is according to the feature for the regular noise for having had experience intermediate-freuqncy signal to be subject to, therefore, root
According to the signal spectrum in default noise model with the immediate noise signal of the first interference signal, can be quickly generated with most
The first opposite offseting signal of close noise signal, while can avoid generating inappropriate offseting signal.By being superimposed nothing
Line signal of communication and the first offseting signal, it farthest can reduce or offset the first interference letter in wireless communication signals
Number, so as to reduce or eliminate interference of the interference signal to the useful signal in wireless communication signals.This method need not increase device
Physical isolation is done to radio communication circuit and digital system circuit, cost is low.
In another embodiment, as shown in Fig. 2 after step silo, in addition to：
S112：Spectrum analysis, the letter of the wireless communication signals after being handled are carried out to the wireless communication signals after processing
Number frequency spectrum.
DFT (Discrete Fourier Transform, discrete fourier can be used alone or in combination in signal spectral analysis
Conversion)/FFT (fast Fourier transform, Fast Fourier Transformation), wave detector or according to useful signal feature
The information such as the methods of doing specific related operation, the phases of the wireless communication signals after extraction process, amplitude, frequency.
S114：By the signal spectrum of wireless communication signals compared with the signal spectrum of the wireless communication signals after processing
Confirm whether the first interference signal eliminates.
By by the signal spectrum of wireless communication signals compared with the signal spectrum of the wireless communication signals after processing,
Specifically, by comparing the signal characteristic of two signals before and after treatment, signal characteristic includes frequency, amplitude and phase
Deng to confirm whether the first interference signal eliminates.If so, step S115 is then performed, if it is not, then performing step S116.
S115：Noise model is updated according to the opposite characteristic information of the first offseting signal.
The first offseting signal in the present embodiment refers to the first offseting signal of renewal.When by comparing the interference of confirmation first
After signal eliminates, the opposite characteristic information that will offset the first offseting signal of the first interference signal updates noise model.
S116：The first offseting signal that the amplitude of the counteracting information of adjustment first is updated.
Specifically, regulation rule is previously provided with, according to default regulation rule, adjusts the amplitude of the first offseting signal,
The first offseting signal updated.For example, the range value of former first offseting signal is tuned up by the regulation rule of pre-adjusting
Or turn down, with the first offseting signal updated.
After step sll beta, return to step S110 and its afterwards the step of, until the first interference signal eliminate.
It is raw by the signal spectrum in noise model with the immediate noise signal of the first interference signal in the present embodiment
Into the feature such as the first offseting signal, its phase, amplitude, frequency might not can just offset the first interference signal, therefore,
By analyzing the wireless communication signals after processing, the signal spectrum of the wireless communication signals after being handled, will handle
The signal spectrum of wireless communication signals after preceding and processing is compared, and whether the first interference signal of analysis eliminates.If not eliminating,
The amplitude for then adjusting the first interference signal updates the first interference signal, then the first interference signal and wireless communication signals by renewal
It is overlapped to offset the first interference signal.If the first interference signal eliminates, by the opposite of the first interference signal of renewal
Characteristic information, so as to increase the quantity of the noise signal in noise model, further can rapidly give birth to according to noise model
Into first offseting signal opposite with immediate noise signal, while can avoid generating inappropriate offseting signal.
In another embodiment, as shown in figure 3, a kind of method bag for reducing signal interference in wireless lan communication lsi
Include following steps：
S301：Obtain the second interference signal gathered when closing the antenna of wireless lan communication lsi.
The second interference signal in the present embodiment is gathered when closing the antenna of wireless lan communication lsi, can be recognized
The second interference signal now to gather is interference signal existing for wireless lan communication lsi itself.
S302：Spectrum analysis is carried out to the second interference signal, obtains the signal spectrum of the second interference signal.
DFT (Discrete Fourier Transform, discrete fourier can be used alone or in combination in signal spectral analysis
Conversion)/FFT (fast Fourier transform, Fast Fourier Transformation), wave detector or according to useful signal feature
The methods of doing specific related operation, extract the information such as the phase, amplitude, frequency of wireless communication signals.
S303：Record the signal spectrum of the second interference signal.
S304：By the signal spectrum of each noise signal in the signal spectrum of the second interference signal and default noise model
It is compared, determines the immediate noise signal of characteristic signal with the second interference signal in default noise model.
The spy according to the regular noise for having had experience intermediate-freuqncy signal to be subject to is stored in default noise model
Sign, by the signal spectrum of the second interference signal compared with the signal spectrum of each noise signal in default noise model,
Confirm the immediate noise signal of characteristic signal with the second interference signal in default noise model.
S305：It is raw according to the signal spectrum in default noise model with the immediate noise signal of the second interference signal
Into second offseting signal opposite with the immediate noise signal of the second interference signal.
Because what is stored in noise model is according to the regular noise for having had experience intermediate-freuqncy signal to be subject to
Feature, therefore, can be fast according to the signal spectrum in default noise model with the immediate noise signal of the second interference signal
Second offseting signal opposite with immediate noise signal is generated fastly, while can avoid generating inappropriate counteracting letter
Number.
S306：Processing is overlapped to the second interference signal and the second offseting signal, the second interference letter after being handled
Number.
Second offseting signal is according to noise signal generation immediate with the second interference signal in default noise model
With immediate noise signal opposite signal, therefore, can be maximum by being superimposed the second interference signal and the second offseting signal
The second interference signal is offset in the reduction of degree.
S307：Spectrum analysis, the letter of the second interference signal after being handled are carried out to the second interference signal after processing
Number frequency spectrum.
S308：By the signal spectrum of the second interference signal compared with the signal spectrum of the second interference signal after processing
To determine whether the second interference signal eliminates.If so, step S309 is then performed, if it is not, then performing step S310.
S309：Noise model is updated according to the opposite characteristic information of the second interference signal.
S310：The amplitude of the second offseting signal is adjusted to update the second offseting signal, and return to step S306, until second
Interference signal eliminates.
In the present embodiment, it is connected, is directly received second caused by inside with the antenna outside chip by being disconnected before use
Interference signal, and spectrum analysis is carried out to the second interference signal, it is dry to second so as to obtain the signal characteristic of the second interference signal
The signal characteristic for disturbing signal is trained to obtain in noise model closest to even identical with the characteristic information of the second interference signal
Noise signal, so as to be quickly generated offseting signal corresponding with wireless communication signals.
After step S310, in addition to：
S311：Obtain the wireless communication signals gathered when opening the antenna of wireless lan communication lsi.
S312：Spectrum analysis is carried out to wireless communication signals, obtains the signal spectrum of wireless communication signals.
S313：By the signal spectrum of wireless communication signals to identify nothing compared with the signal spectrum of the second interference signal
Useful signal in line signal of communication, and obtain the signal spectrum of useful signal.
S314：By the signal spectrum of each noise signal in the signal spectrum of wireless communication signals and default noise model
It is compared, determines the first interference signal in wireless communication signals, and obtain the signal spectrum of the first interference signal.
S315：Filtering parameter is adjusted according to the signal spectrum of useful signal.
Specifically, interference signal can further be filtered out by being filtered using bandpass filter.In the present embodiment
Filtering parameter refers to the filtering parameter of bandpass filter, according to the center frequency point and bandwidth of useful signal, adjusts bandpass filter
Filtering parameter, so that bandpass filter is adjusted to most suitable state.
S316：It is raw according to the signal spectrum in default noise model with the immediate noise signal of the first interference signal
Into first offseting signal opposite with the immediate noise signal of the first interference signal.
S317：Wireless communication signals and the first offseting signal are handled, the wireless communication signals after being handled.
Specifically, processing is overlapped to wireless communication signals and the first offseting signal, to offset in wireless communication signals
The first interference signal；Processing is filtered to the radio communication after being overlapped processing according to filtering parameter, after obtaining processing
Wireless communication signals.
Bandpass filter can be extremely accurate adjusted according to the feature of useful signal to be operated in most using bandpass filter
Excellent state.The central point of useful signal frequency and the effective bandwidth of useful signal can be followed the trail of by being mainly reflected in bandpass filter,
And allow noise of the bandpass filter as much as possible outside cancellation band and do not changed by frequency shift (FS) and signal effective bandwidth
Influence, so as to lift the signal to noise ratio of useful signal to greatest extent.
S318：Spectrum analysis, the letter of the wireless communication signals after being handled are carried out to the wireless communication signals after processing
Number frequency spectrum.
S319：By the signal spectrum of wireless communication signals compared with the signal spectrum of the wireless communication signals after processing
Confirm whether the first interference signal eliminates.If so, step S320 is then performed, if it is not, then performing step S321.
S320：Noise model is updated according to the opposite characteristic information of the first offseting signal.
S321：Adjustment first offsets the amplitude of information to update the first offseting signal, and return to step S318, until first
Interference signal eliminates.
The above-mentioned method for reducing signal interference in wireless lan communication lsi, reduce or eliminate as much as possible intermediate-freuqncy signal
In the interference from chip internal, so as to improve the signal to noise ratio of reception signal and wireless receiving performance, be so advantageous to wireless SOC
Chip does not reduce performance in the case where improving integrated level.
In one embodiment, there is provided a kind of device for reducing signal interference in wireless lan communication lsi, such as Fig. 4 institutes
Show, including：Noise model 401, acquisition module 402, the first analysis module 403, offseting signal generation module 404 and signal transacting
Module 405.
Noise model 401, for prestoring noise signal.
Acquisition module 402, for obtaining the wireless communication signals gathered when opening the antenna of wireless lan communication lsi.
First analysis module 403, for carrying out spectrum analysis to wireless communication signals, obtain the signal of wireless communication signals
Frequency spectrum, and by the signal spectrum of wireless communication signals and default noise model.Each noise signal signal spectrum carry out
Compare, determine the first interference signal in wireless communication signals.
Offseting signal generation module 404, for according in default noise model with the first interference signal is immediate makes an uproar
The signal spectrum of acoustical signal, generation first offseting signal opposite with the immediate noise signal of the first interference signal.
Signal processing module 405, for handling wireless communication signals and the first offseting signal, after being handled
Wireless communication signals.
The above-mentioned device for reducing signal interference in wireless lan communication lsi, because the first offseting signal is according to default
Noise model in the generation of immediate with the first interference signal noise signal with immediate noise signal opposite signal, and
What is stored in noise model is according to the feature for the regular noise for having had experience intermediate-freuqncy signal to be subject to, therefore, root
According to the signal spectrum in default noise model with the immediate noise signal of the first interference signal, can be quickly generated with most
The first opposite offseting signal of close noise signal, while can avoid generating inappropriate offseting signal.By being superimposed nothing
Line signal of communication and the first offseting signal, it farthest can reduce or offset the first interference letter in wireless communication signals
Number, so as to reduce or eliminate interference of the interference signal to the useful signal in wireless communication signals.The device need not increase device
Physical isolation is done to radio communication circuit and digital system circuit, cost is low.
In another embodiment, as shown in figure 5, reducing the device of signal interference in wireless lan communication lsi also includes
Second analysis module 406, the first update module 407 and the first adjusting module 408.
Second analysis module 406, for carrying out spectrum analysis, the nothing after being handled to the wireless communication signals after processing
The signal spectrum of line signal of communication, and by the signal of the wireless communication signals after the signal spectrum of wireless communication signals and processing frequently
Spectrum, which is compared, confirms whether the first interference signal eliminates.
First update module 407, for when the second analysis module confirms that the first interference signal eliminates, being offset according to first
The opposite characteristic information renewal noise model of signal.
First adjusting module 408, for when the second analysis module confirms that the first interference signal does not eliminate, adjustment first to be supported
The amplitude for the information that disappears is to update the first offseting signal.
It is raw by the signal spectrum in noise model with the immediate noise signal of the first interference signal in the present embodiment
Into the feature such as the first offseting signal, its phase, amplitude, frequency might not can just offset the first interference signal, therefore,
By analyzing the wireless communication signals after processing, the signal spectrum of the wireless communication signals after being handled, will handle
The signal spectrum of wireless communication signals after preceding and processing is compared, and whether the first interference signal of analysis eliminates.If not eliminating,
The amplitude for then adjusting the first interference signal updates the first interference signal, then the first interference signal and wireless communication signals by renewal
It is overlapped to offset the first interference signal.If the first interference signal eliminates, by the opposite of the first interference signal of renewal
Characteristic information, so as to increase the quantity of the noise signal in noise model, further can rapidly give birth to according to noise model
Into first offseting signal opposite with immediate noise signal, while can avoid generating inappropriate offseting signal.
In another embodiment, as shown in fig. 6, reducing the device of signal interference in wireless lan communication lsi also includes
3rd analysis module 409, the second update module 410, the second adjusting module 411.
Acquisition module 402, it is additionally operable to obtain the second interference letter gathered when closing the antenna of wireless lan communication lsi
Number.
First analysis module 403, it is additionally operable to carry out spectrum analysis to the second interference signal, obtains the letter of the second interference signal
Number frequency spectrum, and the signal spectrum of each noise signal in the signal spectrum of the second interference signal and default noise model is carried out
Compare, determine the immediate noise signal of characteristic signal with the second interference signal in default noise model.
Offseting signal generation module 404, for according in default noise model with the second interference signal is immediate makes an uproar
The signal spectrum of acoustical signal, generation second offseting signal opposite with the immediate noise signal of the second interference signal.
Signal processing module 405, it is additionally operable to be overlapped processing to the second interference signal and the second offseting signal, obtains everywhere
The second interference signal after reason.
3rd analysis module 409, it is additionally operable to carry out spectrum analysis to the second interference signal after processing, after being handled
The signal spectrum of second interference signal, and by the signal of the second interference signal after the signal spectrum of the second interference signal and processing
Frequency spectrum is compared to confirm whether the second interference signal eliminates.
Second update module 410, for when the 3rd analysis module confirms that the second interference signal eliminates, being disturbed according to second
The opposite characteristic information renewal noise model of signal.
Second adjusting module 411, for when the 3rd analysis module confirms that the second interference signal does not eliminate, adjustment second to be supported
Disappear signal amplitude to update the second offseting signal.
Please continue to refer to Fig. 6, the device of signal interference in wireless lan communication lsi, in addition to logging modle 412 are reduced
With filtering adjusting module 413.
Logging modle 412, for recording the signal spectrum of the second interference signal.
First analysis module 403 includes：First comparison module 4031 and the second comparison module 4032.
First comparison module 4031, for by the signal spectrum of the signal spectrum of wireless communication signals and the second interference signal
It is compared to identify the useful signal in wireless communication signals, and obtains the signal spectrum of useful signal.
First comparison module 4032, each noise in the signal spectrum of wireless communication signals and default noise model is believed
Number signal spectrum be compared, determine the first interference signal in wireless communication signals, and obtain the letter of the first interference signal
Number frequency spectrum.
Adjusting module 413 is filtered, for adjusting filtering parameter according to the signal spectrum of useful signal.
Signal processing module includes overlap-add procedure module 4051 and filtering process module 4052.
Overlap-add procedure module 4051, for being overlapped processing to wireless communication signals and the first offseting signal, to offset
The first interference signal in wireless communication signals.
Filtering process module 4052, for being filtered place to the radio communication after being overlapped processing according to filtering parameter
Reason, the wireless communication signals after being handled.Specifically, filtering process module 4052, for the center frequency according to useful signal
Point and Bandwidth adjustment filtering parameter.
The above-mentioned device for reducing signal interference in wireless lan communication lsi, reduce or eliminate as much as possible intermediate-freuqncy signal
In the interference from chip internal, so as to improve the signal to noise ratio of reception signal and wireless receiving performance, be so advantageous to wireless SOC
Chip does not reduce performance in the case where improving integrated level.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Can not therefore it be construed as limiting the scope of the patent.It should be pointed out that come for one of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
- A kind of 1. method for reducing signal interference in wireless lan communication lsi, it is characterised in that including：Obtain the wireless communication signals gathered when opening the antenna of wireless lan communication lsi；Spectrum analysis is carried out to the wireless communication signals, obtains the signal spectrum of the wireless communication signals；The signal spectrum of each noise signal in the signal spectrum of the wireless communication signals and default noise model is carried out Compare, determine the first interference signal in the wireless communication signals；According to the signal spectrum in default noise model with the immediate noise signal of the first interference signal, generation and institute State the first opposite offseting signal of the immediate noise signal of the first interference signal；The wireless communication signals and first offseting signal are handled, the wireless communication signals after being handled.
- 2. according to the method for claim 1, it is characterised in that believe being offset to the wireless communication signals and described first Number handled, the step of wireless communication signals after being handled after, in addition to：Spectrum analysis is carried out to the wireless communication signals after the processing, obtains the signal of the wireless communication signals after the processing Frequency spectrum；By the signal spectrum of the wireless communication signals compared with the signal spectrum of the wireless communication signals after the processing, Confirm whether first interference signal eliminates；If so, the noise model is then updated according to the opposite characteristic information of first offseting signal；If it is not, then adjusting the described first amplitude for offsetting information to update first offseting signal, and return described to described Wireless communication signals and first offseting signal are handled, the step of wireless communication signals after being handled, until institute State the elimination of the first interference signal.
- 3. according to the method for claim 1, it is characterised in that opening the day of wireless lan communication lsi in described obtain Before the step of wireless communication signals gathered during line, in addition to：Obtain the second interference signal gathered when closing the antenna of wireless lan communication lsi；Spectrum analysis is carried out to second interference signal, obtains the signal spectrum of second interference signal；The signal spectrum of each noise signal in the signal spectrum of second interference signal and default noise model is carried out Compare, determine the immediate noise signal of characteristic signal with second interference signal in the default noise model；According to the signal spectrum in default noise model with the immediate noise signal of the second interference signal, generation and institute State the second opposite offseting signal of the immediate noise signal of the second interference signal；Processing is overlapped to second interference signal and second offseting signal, the second interference letter after being handled Number；Spectrum analysis is carried out to the second interference signal after the processing, obtains the signal of the second interference signal after the processing Frequency spectrum；By the signal spectrum of second interference signal compared with the signal spectrum of the second interference signal after processing with true Recognize whether second interference signal eliminates；If so, the noise model is then updated according to the opposite characteristic information of second interference signal；If it is not, then adjusting the amplitude of second offseting signal to update second offseting signal, and return described to described Second interference signal and second offseting signal are overlapped processing, the step of the second interference signal after being handled, directly Eliminated to second interference signal.
- 4. according to the method for claim 3, it is characterised in that also including step：Record the letter of second interference signal Number frequency spectrum；The signal spectrum of each noise signal in the signal spectrum of the wireless communication signals and default noise model is carried out The step of comparing, determining the first interference signal in the wireless communication signals includes：By the signal of the wireless communication signals Frequency spectrum compared with the signal spectrum of second interference signal to identify the useful signal in the wireless communication signals, and Obtain the signal spectrum of the useful signal；By the signal spectrum of the wireless communication signals with it is each in default noise model The signal spectrum of noise signal is compared, and determines the first interference signal in the wireless communication signals, and obtains described The signal spectrum of one interference signal；Methods described also includes：Filtering parameter is adjusted according to the signal spectrum of the useful signal；It is described that the wireless communication signals and first offseting signal are handled, the wireless communication signals after being handled The step of include：Processing is overlapped to the wireless communication signals and first offseting signal, to offset the channel radio Believe first interference signal in signal；The radio communication after being overlapped processing is filtered according to filtering parameter Processing, the wireless communication signals after being handled.
- 5. according to the method for claim 4, it is characterised in that according to the center frequency point and Bandwidth adjustment of the useful signal Filtering parameter.
- A kind of 6. device for reducing signal interference in wireless lan communication lsi, it is characterised in that including：Noise model, for prestoring noise signal；Acquisition module, for obtaining the wireless communication signals gathered when opening the antenna of wireless lan communication lsi；First analysis module, for carrying out spectrum analysis to the wireless communication signals, obtain the letter of the wireless communication signals Number frequency spectrum, and by the signal spectrum of each noise signal in the signal spectrum of the wireless communication signals and default noise model It is compared, determines the first interference signal in the wireless communication signals；Offseting signal generation module, for being believed according to noise immediate with first interference signal in default noise model Number signal spectrum, generation first offseting signal opposite with the immediate noise signal of the first interference signal；Signal processing module, for handling the wireless communication signals and first offseting signal, after obtaining processing Wireless communication signals.
- 7. device according to claim 6, in addition to the second analysis module, the first update module and the first adjusting module；Second analysis module, for carrying out spectrum analysis to the wireless communication signals after the processing, obtain the processing The signal spectrum of wireless communication signals afterwards, and by the channel radio after the signal spectrum of the wireless communication signals and the processing The signal spectrum of letter signal, which is compared, confirms whether first interference signal eliminates；First update module, for when second analysis module confirms that first interference signal eliminates, according to institute The opposite characteristic information for stating the first offseting signal updates the noise model；First adjusting module, for when second analysis module confirms that first interference signal does not eliminate, adjusting The amplitude of the first counteracting information is to update first offseting signal.
- 8. device according to claim 6, it is characterised in that also include：3rd analysis module, the second update module, Two adjusting modulesThe acquisition module, it is additionally operable to obtain the second interference signal gathered when closing the antenna of wireless lan communication lsi；First analysis module, it is additionally operable to carry out spectrum analysis to second interference signal, obtains the second interference letter Number signal spectrum, and by the letter of each noise signal in the signal spectrum of second interference signal and default noise model Number frequency spectrum is compared, determine in the default noise model with the characteristic signal of second interference signal is immediate makes an uproar Acoustical signal；The offseting signal generation module, for according in default noise model with second interference signal is immediate makes an uproar The signal spectrum of acoustical signal, generation second offseting signal opposite with the immediate noise signal of the second interference signal；The signal processing module, it is additionally operable to be overlapped processing to second interference signal and second offseting signal, The second interference signal after being handled；3rd analysis module, it is additionally operable to carry out spectrum analysis to the second interference signal after the processing, obtains the place The signal spectrum of the second interference signal after reason, and second after the signal spectrum of second interference signal and processing is disturbed The signal spectrum of signal is compared to confirm whether second interference signal eliminates；Second update module, for when the 3rd analysis module confirms that second interference signal eliminates, according to institute The opposite characteristic information for stating the second interference signal updates the noise model；Second adjusting module, for when the 3rd analysis module confirms that second interference signal does not eliminate, adjusting The amplitude of second offseting signal is to update second offseting signal.
- 9. device according to claim 8, it is characterised in that also including logging modle and filtering adjusting module；The logging modle, for recording the signal spectrum of second interference signal；First analysis module includes：First comparison module and the second comparison module；First comparison module, for by the signal of the signal spectrum of the wireless communication signals and second interference signal Frequency spectrum is compared to identify the useful signal in the wireless communication signals, and obtains the signal spectrum of the useful signal；Second comparison module, for by the signal spectrum of the wireless communication signals and respectively making an uproar in default noise model The signal spectrum of acoustical signal is compared, and determines the first interference signal in the wireless communication signals, and obtain described first The signal spectrum of interference signal；The filtering adjusting module, for adjusting filtering parameter according to the signal spectrum of the useful signal；The signal processing module includes overlap-add procedure module and filtering process module；The overlap-add procedure module, for being overlapped processing to the wireless communication signals and first offseting signal, with Offset first interference signal in the wireless communication signals；The filtering process module, for being filtered place to the radio communication after being overlapped processing according to filtering parameter Reason, the wireless communication signals after being handled.
- 10. device according to claim 9, it is characterised in that the filtering adjusting module, for according to the useful letter Number center frequency point and Bandwidth adjustment filtering parameter.
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