基于硬阈值迭代的电力线载波通信脉冲噪声抑制方法

doi:10.11959/j.issn.1000-0801.2016277

Abstract

Abstract:

The performance of power line communication systems is seriously affected by impulsive noise.The compressed sensing theory has been applied for estimation in view of the sparse property of impulsive noise in the time domain.A compressed sensing method based on the iterative hard thresholding was proposed to estimate the impulsive noise.Firstly,the thresholding value was updatedby iteration,and then the thresholding function was used to estimate the impulsive noise.Finally,the impulsive noise was cancelled by subtracting the estimation value from the received signal.Simulation results show that the proposed method can efficiently estimate the impulsive noise and promote the performance bothinmean square error and signal to noise ratio.

Key words: power line communication, impulsive noise, compressed sensing, iterative hard thresholding

Mingchen YU,Youming LI,Caimei FU,Guili ZHOU. Iterative hard thresholding based impulsive noise suppression method in power line communication system[J]. Telecommunications Science, 2016, 32(11): 101-106.

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相关参数	仿真设置	PRIME
调制方式	QPSK	QPSK
子载波总数/个	256	256
数据子载波数/个	136	98
空子载波数/个	120	158

Iterative hard thresholding based impulsive noise suppression method in power line communication system

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