Non-binary turbo-coded OFDM-PLC system in the presence of impulsive noise
Non-binary turbo-coded OFDM-PLC system in the presence of impulsive noise
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存在脉冲噪声的非二进制涡轮编码 OFDM-PLC 系统
DOI：
10.23919/eusipco.2017.8081676
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
S. L. Goff
中科院分区：
文献类型：
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作者：
Wael Abd;Z. Mei;M. Johnston;S. L. Goff
电力线通信（PLC）信道使信息承载信号受到脉冲噪声和多径衰落的影响。为了减轻这些影响，我们建议采用非二进制Turbo码，因为非二进制纠错码通常承诺在这种恶劣的环境中增强性能。在本文中，我们研究了非二进制涡轮码的性能表现出频率选择性与添加剂米德尔顿A类噪声的PLC信道，并与可比的二进制涡轮编码的PLC系统进行比较。为了减少多径和脉冲噪声的影响，已经采用了具有非线性接收机（消隐和限幅）的正交频分复用（OFDM）。在脉冲指数（A）为0.01且噪声比（Γ）为0.01的极端脉冲信道上检查系统。结果表明，非二进制Turbo码具有非常强的鲁棒性，在PLC信道上比二进制Turbo码获得了更大的增益。
The power-line communication (PLC) channel causes information-bearing signals to be affected by impulsive noise and the effects of the multipath fading. To mitigate these effects, we propose the employment of non-binary turbo codes, since non-binary error-correcting codes generally promise an enhanced performance in such harsh environments. In this paper, we investigate the performance of non-binary turbo-codes on PLC channels that exhibit frequency selectivity with additive Middleton Class A noise and compare with a comparable binary turbo-coded PLC system. In order to reduce the effect of multipath and impulsive noise, orthogonal frequency-division multiplexing (OFDM) with non-linear receivers (blanking and clipping) have been employed. The system is examined on extremely impulsive channels where the value of the impulsive index (A) is 0.01 and the noise ratio (Γ) is 0.01. The results show that non-binary turbo codes are very robust and achieve a large gain over binary turbo codes on PLC channels.