Average-entropy variation in iterative decoding of turbo codes and its application

被引：39

作者：

Chen, J. Y. ^{[1
]}

Zhang, L. ^{[1
]}

Qin, J. ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Dept Elect & Commun Engn, Guangzhou, Guangdong, Peoples R China

来源：

ELECTRONICS LETTERS | 2008年 / 44卷 / 22期

关键词：

D O I：

10.1049/el:20081736

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new stopping criterion for turbo codes is proposed. Based on the entropy concept, a metric called average-entropy to measure the average uncertainty of the estimated bits of each iteration is derived. This metric has a close relation to the bit error rate (BER). The average-entropy decreases as BER reduces and vice versa. The proposed stopping criterion stops the iterative algorithm when there is not a, or little, reduction of the average-entropy. Compared with other well-known criteria, this new criterion reduces the average number of iterations while maintaining error correction performance.

引用

页码：1314 / U32

页数：2

共 9 条

[1]

[Anonymous], 1993, PROC IEEE INT C COMM, DOI 10.1109/ICC.1993.397441

[2] OPTIMAL DECODING OF LINEAR CODES FOR MINIMIZING SYMBOL ERROR RATE [J].

BAHL, LR ;

COCKE, J ;

JELINEK, F ;

RAVIV, J .

IEEE TRANSACTIONS ON INFORMATION THEORY, 1974, 20 (02) :284-287

[3]

Gilbert F, 2003, IEEE VTS VEH TECHNOL, P2376

[4] Iterative decoding of binary block and convolutional codes [J].

Hagenauer, J ;

Offer, E ;

Papke, L .

IEEE TRANSACTIONS ON INFORMATION THEORY, 1996, 42 (02) :429-445

[5]

KOVARE L, 2006, IEEE T INFORM THEORY, V52, P1366

[6] Optimal and sub-optimal maximum a posteriori algorithms suitable for turbo decoding [J].

Robertson, P ;

Hoeher, P ;

Villebrun, E .

EUROPEAN TRANSACTIONS ON TELECOMMUNICATIONS, 1997, 8 (02) :119-125

[7] Efficient stopping rule for turbo decoders [J].

Rovini, M ;

Martinez, A .

ELECTRONICS LETTERS, 2006, 42 (04) :235-236

[8] Two simple stopping criteria for turbo decoding [J].

Shao, RY ;

Lin, S ;

Fossorier, MPC .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1999, 47 (08) :1117-1120

[9]

Tasev Z, 2003, LECT NOTES CONTR INF, V293, P301

← 1 →