Efficient layer stopping technique for layered LDPC decoding. Issue 16 (1st August 2013)

• Record Type: Journal Article
• Authors: Lin, C.‐H.; Huang, T.‐H.; Chen, C.‐C.; Lin, S.‐Y.
• Is Part Of: Electronics letters. Volume 49:Issue 16(2013)
• Page Start: 994
• Page End: 996
• Publication Date: 2013-08-01
• Subjects: iterative decoding -- parity check codes -- reliability; layer stopping technique -- early termination techniques -- low‐density party‐check decoding -- layer stopping criterion -- iterative layered LDPC decoding -- soft log‐likelihood ratio -- reliability -- coding gain; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2013.1843
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : Early termination techniques are widely used in low‐density party‐check (LDPC) decoding since the decoding operations can be tremendously reduced. A layer stopping criterion is proposed to reduce further the operations within iterative layered LDPC decoding. The proposed criterion detects the high reliability of the soft log‐likelihood ratio with a threshold in each layer. Then the layer operations can be stopped when the reliable layers are detected. The proposed criterion combined with early termination techniques can efficiently reduce the layer operations by up to 60% with a negligible loss of coding gain at Eb / N 0 of 3.2 dB.