Adaptive decision directed impulse noise mitigate in power line communication

被引:9
作者
Tan, Zhouwen [1 ,2 ]
Liu, Hongli [1 ]
机构
[1] Hunan Univ, Coll Elect & Informat Engn, Changsha, Hunan, Peoples R China
[2] Hunan Inst Humanities Sci & Technol, Dept Informat Sci & Engn, Loudi, Peoples R China
基金
中国国家自然科学基金;
关键词
carrier transmission on power lines; impulse noise; OFDM modulation; table lookup; error statistics; time-varying channels; method of moments; high-speed power line communication; adaptive decision directed impulse noise mitigate; fixed blanking threshold; adaptive IN-mitigation system; orthogonal frequency division multiplexing; time-varying IN channel; method of moment estimation; adaptive threshold; adaptive iterative IN-mitigation block; look-up table; bit error rate; SMART GRID APPLICATIONS; PERFORMANCE ANALYSIS; SYSTEMS; RECOVERY; BLANKING; CHANNEL;
D O I
10.1049/iet-spr.2016.0117
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Impulse noise (IN) is the main cause of performance degradation in high-speed power line communication systems. Traditional methods mainly focus on manually setting a fixed blanking threshold to mitigate the corresponding IN. However, the fixed threshold cannot adapt to the time-varying IN efficiently. To solve this problem, an adaptive IN-mitigation system is proposed based on orthogonal frequency division multiplexing in a time-varying IN channel. The characteristics of IN are preevaluated by the method of moment estimation. Moreover, the adaptive threshold is efficiently solved in closed form according to the IN characteristics. In addition, an adaptive iterative IN-mitigation block is designed to leverage the performance of the receiver. For the number of iterations, a look-up table is constructed according to the IN characteristics. The experimental results show that the proposed method achieves performance balance in weak, moderate, and heavy IN environments simultaneously. It is noted that the bit error rate significantly decreases with an increment in E-b/N-0.
引用
收藏
页码:368 / 374
页数:7
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