LDGM Codes for Channel Coding and Joint Source-Channel Coding of Correlated Sources | Zendy

Wei Zhong | Zendy; Javier GarciaFrias | Zendy

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LDGM Codes for Channel Coding and Joint Source-Channel Coding of Correlated Sources

Author(s) -

Wei Zhong,

Javier GarciaFrias

Publication year - 2005

Publication title -

eurasip journal on advances in signal processing

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.317

H-Index - 88

eISSN - 1687-6180

pISSN - 1687-6172

DOI - 10.1155/asp.2005.942

Subject(s) - decoding methods , computer science , encoder , generator matrix , coding (social sciences) , algorithm , binary number , channel (broadcasting) , channel code , variable length code , joint (building) , theoretical computer science , low density parity check code , concatenated error correction code , turbo code , shannon–fano coding , block code , mathematics , telecommunications , arithmetic , statistics , architectural engineering , engineering , operating system

We propose a coding scheme based on the use of systematic linear codes with low-density generator matrix (LDGM codes) for channel coding and joint source-channel coding of multiterminal correlated binary sources. In both cases, the structures of the LDGM encoder and decoder are shown, and a concatenated scheme aimed at reducing the error floor is proposed. Several decoding possibilities are investigated, compared, and evaluated. For different types of noisy channels and correlation models, the resulting performance is very close to the theoretical limits.

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