Iterative Decoding of SPC Outer Coded Concatenation Codes with Maximal Ratio Combining

Xiaogang CHEN  Hongwen YANG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B   No.9   pp.2983-2986
Publication Date: 2008/09/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.9.2983
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Fundamental Theories for Communications
Keyword: 
LDPC,  MRC,  Reed-Solomon,  SPC,  turbo,  

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Summary: 
This letter proposes a simple iterative decoding algorithm for the concatenation codes where the outer code is single-parity-check (SPC) code. The erroneous inner codewords are iteratively combined with maximum ratio combining (MRC) and then re-decoded. Compared with the conventional scheme where the RS outer code concatenation is algebraically decoded to recover the erasures, the proposed scheme has better performance due to MRC processing. On the other hand, the proposed scheme is less complex because the linear combination is simpler than algebraical decoding and the MRC gain can loose the requirement for inner decoder.