Mitigation of Impulsive Noise Effect on the PLC Channel With QC-LDPC Codes as the Outer Coding Scheme

被引：28

作者：

Andreadou, Nikoleta ^{[1
]}

Pavlidou, Fotini-Niovi ^{[1
]}

机构：

[1] Aristotle Univ Thessaloniki, Dept Elect & Comp Engn, Thessaloniki 54124, Greece

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2010年 / 25卷 / 03期

关键词：

Decoding algorithm; inner codes; low-density parity check codes (LDPC); outer codes; power-line communications (PLC); POWER; MODEL;

D O I：

10.1109/TPWRD.2010.2041370

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：

In this paper, the characteristics of irregular quasi-cyclic-low-density parity check (QC-LDPC) codes are examined when they are applied on a highly impulsive noise channel, such as the power-line-communications (PLC) channel. We study two decoding algorithms: 1) the sum product and 2) the bit-flipping algorithm, and how they affect the system's performance. LDPC codes are introduced in combination with other coding schemes, such as Reed-Solomon and convolutional codes. We propose irregular QC-LDPC codes as outer codes for the PLC channel in combination with Reed-Solomon codes, due to their decoding characteristics. In addition, various code rates are used for each different coding scenario. We also test how common Reed-Solomon codes affect the system's performance, such as the RS(63, 53), RS(511, 431), RS(127, 107), and RS(255, 239) codes. Furthermore, we propose an altered version of the sum-product decoding algorithm to enable its operation when QC-LDPC codes are used as the outer coding scheme in combination with Reed-Solomon codes. Regarding the system's design, the orthogonal frequency-division multiplexing transmission technique is utilized. We also take Zimmermann's model into consideration for the PLC channel and Middleton's noise model.

引用

页码：1440 / 1449

页数：10

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