Windowed Decoding of Protograph-Based LDPC Convolutional Codes Over Erasure Channels

被引：182

作者：

Iyengar, Aravind R. ^{[1
,2
]}

Papaleo, Marco ^{[3
]}

Siegel, Paul H. ^{[1
,2
]}

Wolf, Jack Keil ^{[1
,2
]}

Vanelli-Coralli, Alessandro ^{[4
]}

Corazza, Giovanni E. ^{[4
]}

机构：

[1] Univ Calif San Diego, Dept Elect & Comp Engn, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Ctr Magnet Recording Res, La Jolla, CA 92093 USA

[3] Qualcomm Inc, Corp Res & Dev Dept, San Diego, CA USA

[4] Univ Bologna, I-40136 Bologna, Italy

来源：

IEEE TRANSACTIONS ON INFORMATION THEORY | 2012年 / 58卷 / 04期

基金：

美国国家科学基金会;

关键词：

Belief propagation; convolutional codes; decoding thresholds; erasure channels; iterative decoding; low-density parity-check codes; stopping sets; windowed decoding; PARITY-CHECK CODES; DENSITY; CAPACITY; BOUNDS;

D O I：

10.1109/TIT.2011.2177439

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

We consider a windowed decoding scheme for LDPC convolutional codes that is based on the belief-propagation (BP) algorithm. We discuss the advantages of this decoding scheme and identify certain characteristics of LDPC convolutional code ensembles that exhibit good performance with the windowed decoder. We will consider the performance of these ensembles and codes over erasure channels with and without memory. We show that the structure of LDPC convolutional code ensembles is suitable to obtain performance close to the theoretical limits over the memoryless erasure channel, both for the BP decoder and windowed decoding. However, the same structure imposes limitations on the performance over erasure channels with memory.

引用

页码：2303 / 2320

页数：18

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