Nonbinary decoding of structured LDPC codes

被引：0

作者：

Capirone, Daniele ^{[1
]}

Como, Giacomo ^{[1
]}

Fagnani, Fabio ^{[1
]}

Garin, Federica ^{[1
]}

机构：

[1] Politecn Torino, I-10129 Turin, Italy

来源：

2008 INTERNATIONAL ZURICH SEMINAR ON COMMUNICATIONS | 2008年

关键词：

D O I：

10.1109/IZS.2008.4497278

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：

A class of serial turbo codes admitting low-density parity-check (LDPC) representation is considered. Their parity matrix has a random and a structured part. Thanks to their turbo structure, these codes are linear-time encodable, while they can be decoded as LDPC codes. An ensemble analysis for the error floor region, on the line of classical results for serial turbo codes, suggests a design parameter. Simulation results using usual LDPC message-passing show poor performance and no dependence on such parameter. A different block-wise decoding algorithm is proposed, which considerably improves performance. With this new decoding scheme, simulations confirm the theoretical design parameters in the medium-high SNR region.

引用

页码：68 / 71

页数：4

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