Optimization of symbol mappings for bit-interleaved coded modulation with iterative decoding

被引：182

作者：

Schreckenbach, F ^{[1
]}

Görtz, N

Hagenauer, J

Bauch, G

机构：

[1] Tech Univ Munich, Inst Commun Engn LNT, D-80290 Munich, Germany

[2] DoCoMo Commun Labs Europe GmbH, D-80687 Munich, Germany

来源：

IEEE COMMUNICATIONS LETTERS | 2003年 / 7卷 / 12期

关键词：

bit-interleaved coded modulation (BICM); iterative decoding (ID); symbol labeling;

D O I：

10.1109/LCOMM.2003.821325

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

We investigate bit-interleaved coded modulation with iterative decoding (BICM-ID) for bandwidth efficient transmission, where the bit error rate is reduced through iterations between a multilevel demapper and a simple channel decoder. In order to achieve a significant turbo-gain, the assignment strategy of the binary indices to signal points is crucial. We address the problem of finding the most suitable index assignments to arbitraryj high order signal constellations. A new method based on the binary switching algorithm is proposed that finds optimized mappings outperforming previously known ones.

引用

页码：593 / 595

页数：3