Efficiently-Encodable Rate-Compatible LDPC Codes

Konferenz: TURBO - CODING - 2006 - 4th International Symposium on Turbo Codes & Related Topics; 6th International ITG-Conference on Source and Channel Coding
03.04.2006 - 07.04.2006 in Munich, Germany

Tagungsband: TURBO - CODING - 2006

Seiten: 6Sprache: EnglischTyp: PDF

Persönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt

Kim, Jaehong; McLaughlin, Steven W. (School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA)
Ramamoorthy, Aditya (Marvell Semiconductor Inc., Sunnyvale, CA, USA)

We present a new class of irregular low-density parity-check (LDPC) codes for finite block length (up to a few thousand symbols) that are well-suited for rate-compatible puncturing. The proposed codes are linear-time encodable with a simple shift-register implementation. In addition, the codes show excellent puncturing performance over a wide range of rates with systematic rate-compatible puncturing structure. For a blocklength of 1024 bits the codes outperform optimized irregular LDPC codes and extended irregular repeat-accumulate (eIRA) codes for all rates 0.5~0.9, and are particularly good at high puncturing rates where good puncturing performance has been previously difficult to achieve.