Rate-compatible punctured low-density parity-check codes with short block lengths

被引:137
作者
Ha, J
Kim, J
Klinc, D
McLaughlin, SW
机构
[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA
[2] Tech Univ Munich, LNT, D-8000 Munich, Germany
关键词
low-density parity-check (LDPC) codes; puncturing; rate-adaptive; short block lengths;
D O I
10.1109/TIT.2005.862118
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
We consider the problem of rate-compatible puncturing of low-density parity-check (LDPC) codes over additive white Gaussian noise (AWGN) channels. In previous work, it was shown that '' good '' puncturing distributions exist for LDPC codes but the code length was large. In this correspondence, we give a procedure for determining the puncturing distributions for LDPC codes with short block lengths (a few thousand bits) and show that careful puncturing can produce good performance. We compare the performance of the rate-compatible punctured LDPC codes with dedicated LDPC codes across a range of rates and see that the rate-compatible codes have a favorable complexity/performance tradeoff.
引用
收藏
页码:728 / 738
页数:11
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