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Design of Efficiently Encodable Moderate-Length High-Rate Irregular LDPC Codes.
- Source :
-
IEEE Transactions on Communications . Apr2004, Vol. 52 Issue 4, p564-571. 8p. - Publication Year :
- 2004
-
Abstract
- This paper presents a new class of irregular low-density parity-check (LDPC) codes of moderate length (10∼ ≤ n 104) and high rate (R ≥ 3/4). Codes in this class admit low-complexity encoding and have lower error-rate floors than other irregular LDPC code-design approaches. It is also shown that this class of LDPC codes is equivalent to a class of systematic serial turbo codes and is an extension of irregular repeat-accumulate codes. A code design algorithm based on the combination of density evolution and differential evolution optimization with a modified cost function is presented. Moderate-length, high-rate codes with no error-rate floors down to a bit-error rate of 10-9 are presented. Although our focus is on moderate-length, high-rate codes, the proposed coding scheme is applicable to irregular LDPC codes with other lengths and rates. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00906778
- Volume :
- 52
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Communications
- Publication Type :
- Academic Journal
- Accession number :
- 13164244
- Full Text :
- https://doi.org/10.1109/TCOMM.2004.826367