A transform domain technique for suppressing narrowband interference in DS-SS system based on threshold estimation

Xue Wei; Xiang Jingcheng; Huang Huaixin

Volume 25 Issue 7

Jul. 2003

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Article Navigation > Journal of Electronics & Information Technology > 2003 > 25(7): 990-994

Xue Wei, Xiang Jingcheng, Huang Huaixin. A transform domain technique for suppressing narrowband interference in DS-SS system based on threshold estimation[J]. Journal of Electronics & Information Technology, 2003, 25(7): 990-994.

Citation:

Xue Wei, Xiang Jingcheng, Huang Huaixin. A transform domain technique for suppressing narrowband interference in DS-SS system based on threshold estimation[J]. Journal of Electronics & Information Technology, 2003, 25(7): 990-994.

Citation:

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A transform domain technique for suppressing narrowband interference in DS-SS system based on threshold estimation

Received Date: 2001-11-08
Rev Recd Date: 2002-05-27
Publish Date: 2003-07-19

Abstract

Abstract

This paper proposes a method for narrowband interference suppression in Direct Sequence Spread System(DS-SS). The distribution of the transform domain data is analysed, and it is approximated by Gaussian distribution. The variance of Gaussian distribution is the sum of the variance of the spread spectrum signal and the variance of the noise, so if it; is estimated, it can be used as the threshold in designing the interference suppression filter. Maximum Likelihood (ML) technique is used for estimating the variance to achieve the auto-matic threshold setup. Theoretical analysis and simulation show that this method has good performance in suppressing the narrowband interference in DS-SS.

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References(1)

References

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