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Spatially Coupled LDPC Codes for Decode-and-Forward in Erasure Relay Channel

By Hironori Uchikawa, Kenta Kasai and Kohichi Sakaniwa

Abstract

We consider spatially-coupled protograph-based LDPC codes for the three terminal erasure relay channel. It is observed that BP threshold value, the maximal erasure probability of the channel for which decoding error probability converges to zero, of spatially-coupled codes, in particular spatially-coupled MacKay-Neal code, is close to the theoretical limit for the relay channel. Empirical results suggest that spatially-coupled protograph-based LDPC codes have great potential to achieve theoretical limit of a general relay channel.Comment: 7 pages, extended version of ISIT201

Topics: Computer Science - Information Theory
Year: 2011
DOI identifier: 10.1587/transfun.E94.A.2127
OAI identifier: oai:arXiv.org:1102.5087
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