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
收藏
页码：68 / 71
页数：4
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