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Method and system for processing interference signal

A technology for interfering signals and signals, which is applied in the field of signal processing and can solve the problems of limited narrowband co-channel interference and waste of resources.

Active Publication Date: 2009-09-02
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This kind of interference cancellation filter works in series with the equalizer, and the interference cancellation first, and then the equalization method is 10 dB (Decibel, decibel) more capable of canceling the narrowband co-channel interference than the equalization method, and resists the narrowband co-frequency interference. The ability to interfere is still limited and there is a certain degree of waste of resources

Method used

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  • Method and system for processing interference signal
  • Method and system for processing interference signal
  • Method and system for processing interference signal

Examples

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Embodiment 1

[0034] In order to improve the ability to combat narrowband co-channel interference with certain resources, an embodiment of the present invention provides a method for processing interference signals, see figure 1 , The method includes:

[0035] 101: Receive an input signal of the current beat and perform equalization processing on the input signal to obtain an equalized signal, and the input signal carries an interference signal;

[0036] 102: Obtain an estimate of the interference signal output by the current beat interference estimation filter;

[0037] 103: Obtain the output signal of the current beat according to the equalized signal and the estimation of the interference signal.

[0038] Among them, 102 specifically includes:

[0039] 102A: Obtain the error signal of the interference estimation filter at least one beat before the current beat;

[0040] 102B: Obtain the training signal of the interference estimation filter at least one beat before the current beat;

[0041]...

Embodiment 2

[0068] In order to improve the ability to combat narrowband co-channel interference with certain resources, an embodiment of the present invention provides a system for processing interference signals, see figure 2 , The system includes: an equalizer 201, an arithmetic module 202, and an interference estimation filter 203;

[0069] The equalizer 201 is configured to receive an input signal of the current beat to perform equalization processing on the input signal to obtain an equalized signal, and the input signal carries an interference signal;

[0070] The interference estimation filter 203 is used to estimate the interference signal carried in the input signal;

[0071] The arithmetic module 202 is used to obtain an estimate of the interference signal output by the current tempo interference estimation filter 203; according to the equalized signal and the estimate of the interference signal, the output signal of the current tempo is obtained.

[0072] Among them, see image 3 ...

Embodiment 3

[0091] See Figure 7 In order to improve the ability to combat narrowband co-channel interference with certain resources, an embodiment of the present invention provides a method for processing interference signals. This embodiment uses Figure 8 The shown interference signal processing system is taken as an example, and the method includes:

[0092] 701: The system runs to the i-th beat of the sequence, and the input signal received by the equalizer is x i ;

[0093] Among them, the input signal x i Carrying useful signals and narrow-band co-channel interference signals.

[0094] 702: x will be received i After the equalizer, the equalized signal x’ is output i-Delay At the same time, the delay processing unit inside the multiplexed equalizer will receive x i Get x after delaying Delay a beat i-Delay ;

[0095] Among them, Delay (delay) represents the input signal x i The number of beats to be delayed, the specific value of Delay is related to the structure of the equalizer. Of c...

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Abstract

The invention discloses a method and a system for processing interference signals, which belongs to the field of signal processing. The method comprises the following steps: input signals of current bThe invention discloses a method and a system for processing interference signals, which belongs to the field of signal processing. The method comprises the following steps: input signals of current beats, which carry interference signals, are received and proportionately processed to obtain proportionately processed signals; the estimation of interference signals output by the current beat interfeats, which carry interference signals, are received and proportionately processed to obtain proportionately processed signals; the estimation of interference signals output by the current beat interference estimation filter is obtained; and the input signals of the current beats are obtained according to the proportionately processed signals and the estimation of the interference signals. The syserence estimation filter is obtained; and the input signals of the current beats are obtained according to the proportionately processed signals and the estimation of the interference signals. The system comprises an equalizer, the interference estimation filter and an operational module; the input signals which are proportionately processed in each time sequence beat and the estimation of the inttem comprises an equalizer, the interference estimation filter and an operational module; the input signals which are proportionately processed in each time sequence beat and the estimation of the interference signals output by the interference estimation filter are processed to obtain signals with narrowband same frequency interference being eliminated; and the method for using the equalizer anderference signals output by the interference estimation filter are processed to obtain signals with narrowband same frequency interference being eliminated; and the method for using the equalizer andthe interference estimation filter in parallel greatly counteract the narrowband same frequency interference signals carried by the input signals.the interference estimation filter in parallel greatly counteract the narrowband same frequency interference signals carried by the input signals.

Description

Technical field [0001] The present invention relates to the field of signal processing, in particular to a method and system for processing interference signals. Background technique [0002] In the prior art, when the bandwidth of the interference signal is relatively small compared to the bandwidth of the useful signal, at this time, the interference signal becomes a kind of narrowband interference within the bandwidth of the useful signal. For example, in cable digital TV transmission, if the shielding of a certain closed route is not good, it may act as an antenna to receive wireless signals into the cable digital TV line. Common wireless signals include home cordless phones, walkie-talkies, etc. Compared with the bandwidth of the cable digital TV signal, they have a smaller bandwidth, so they will become a kind of narrow-band interference within the bandwidth of the cable digital TV signal. [0003] Co-channel interference specifically refers to: in wireless communication, b...

Claims

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Application Information

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IPC IPC(8): H04L25/03
Inventor 胡宇鹏蔡朝辉左文明邱忠甫
Owner HUAWEI TECH CO LTD