Impulse Noise Suppression in Power Line Communication Based on Compressed Sensing

被引：0
|
作者：
Deng R. [1 ]
Tan Z. [1 ]
Xiao G. [2 ]
Wang G. [1 ]
Liu H. [1 ]
机构：
[1] College of Electrical and Information Engineering, Hunan University, Changsha
[2] State Grid Yueqing Electric Power Supply Company, Yueqing
来源：
Liu, Hongli (hongliliu@hnu.edu.cn) | 2018年 / China Machine Press卷 / 33期
关键词：
Compressed sensing; Impulse noise; Orthogonal frequency division multiplexing; Power line communication;
D O I：
10.19595/j.cnki.1000-6753.tces.171715
中图分类号：
学科分类号：
摘要：
To enhance the transmission performance of orthogonal frequency division multiplexing (OFDM) communication system over low-voltage power line, this paper proposed a kind of impulse noise suppression algorithm-optimized prior aided sparsity adaptive matching pursuit(OPA-SAMP). The algorithm used the data on empty sub-carriersin frequency domain as the measurement vector, deduced a rough estimate threshold based on the change of signal to noise ratio (SNR), and initialized the residual and step length by the priori support set of impulse noise which derived from the estimated threshold, then recovered the impulse noise by the sparse adaptive matching tracking (SAMP) iterative algorithm, finally, the impulse noise is suppressed at the receiving end. Experimental results show that the proposed algorithm has lower communication error rate and shorterrunning timecompare with the traditional compressed sensing algorithm. What is more, the performance of the algorithm is better in case of high probability of impulse noise and large amount of transmission data. © 2018, Electrical Technology Press Co. Ltd. All right reserved.
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页码：5555 / 5563
页数：8
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