Ensemble Pseudocodeword Weight Enumerators for Protograph-Based Generalized LDPC Codes

被引：0
|
作者：
Abu-Surra, Shadi [1 ]
Divsalar, Dariush [2 ]
Ryan, William E. [1 ]
机构：
[1] Univ Arizona, Tucson, AZ 85721 USA
[2] Jet Prop Lab, Tucson, AZ 85721 USA
来源：
GLOBECOM 2009 - 2009 IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE, VOLS 1-8 | 2009年
关键词：
D O I：
暂无
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：
Recently, pseudocodewords of Tanner graphs of LDPC codes have been used to explain the behavior of iterative decoders for these codes. In this paper, finite-length pseudocode-word weight enumerators for protograph-based generalized-LDPC code ensembles are obtained. Then asymptotic results are derived from the finite-length results by letting the block length go to infinity. The asymptotic results allow us to determine whether or not the typical minimum pseudocodeword weight grows linearly with codeword length. We give examples with Hamming component codes.
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页码：4530 / +
页数：2
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