LDPC编码的BICM迭代系统中的映射方案研究

doi:10.3969/j.issn.1000-0801.2009.03.017

电信科学 ›› 2009, Vol. 25 ›› Issue (3): 54-58.doi: 10.3969/j.issn.1000-0801.2009.03.017

LDPC编码的BICM迭代系统中的映射方案研究

黄平^1,²,金毅¹,赵春明¹

¹ 东南大学移动通信国家重点实验室南京 210096
² 河海大学电气工程学院南京 210098

出版日期:2009-03-15 发布日期:2009-03-15
基金资助:
国家“863”计划基金资助项目

Research on Labeling Strategy for LDPC Coded BICM-ID Systems

Ping Huang^1,²,Yi Jin¹,Chunming Zhao¹

¹ National Mobile Communication Research Lab，Southeast University，Nanjing 210096，China
² Electrical Engineering School，Hohai University，Nanjing 210098，China

Online:2009-03-15 Published:2009-03-15

摘要/Abstract

摘要：

迭代BICM（BICM-ID）系统的性能与调制星座符号的映射方式有关，本文利用EXIT图的方法，分析了各种星座符号映射方案对LDPC编码的BICM-ID系统性能的影响。分析表明，已有的卷积码编码的BICM-ID系统的映射方式的优化设计准则不再适用于LDPC编码的BICM-ID 系统，应按照迭代系统的EXIT特性曲线相匹配的原则，将映射的优化和码字的特点联合起来考虑。计算机仿真验证了这个结论。

关键词: 低密度奇偶校验码, 迭代比特交织编码调制, 映射方案, 外附信息转移图

Abstract:

We investigate the effect of the different labeling map on the LDPC-BICM-ID system performance based on the extrinsic information transfer（EXIT）chart and computer simulation. The results show that Gray mapping is the best compared with the other optimized labeling strategies designed especially for the convolutional codes coded BICM-ID systems.

Key words: low-density parity-check（LDPC）code, bit-interleaved coded modulation with iterative decoding（BICM-ID）, labeling map, extrinsic information transfer chart

黄平,金毅,赵春明. LDPC编码的BICM迭代系统中的映射方案研究[J]. 电信科学, 2009, 25(3): 54-58.

Ping Huang,Yi Jin,Chunming Zhao. Research on Labeling Strategy for LDPC Coded BICM-ID Systems[J]. Telecommunications Science, 2009, 25(3): 54-58.

图/表 6

图1

图2

图3

图4

图5

图6

参考文献 20

1	Zehavi E . 8-PSK trellis codes for a rayleigh channel. IEEE Transactions on Communications， 1992，40(5)：873～884
2	Caire G ， Taricco G ， Biglieri E . Bit-interleaved coded modulation. IEEE Transactions on Information Theory， 1998，44(3)：927～946
3	Brink S Ten ， Speidel J ， Hong Yanran . Iterative demapping and decoding for multilevel modulation.In： Proceedings of IEEE Global Telecommun Conference（GLOBECOM）， 1998：579～584
4	Brink S Ten . Designing iterative decoding schemes with the extrinsic information transfer chart. AEU International Journal of Electronics and Communications， 2000，54(6)：389～398
5	Li Xiaodong ， Chindapol A ， Ritcey J A . Bit-interleaved coded modulation with iterative decoding and 8-PSK signaling. IEEE Transactions on Communications， 2002，50(8): 1250～1257
6	Schreckenbach F ， Gortz N ， Hagenauer J Bauch G . Optimized symbol mappings for bit-interleaved coded modulation with iterative decoding.In： Proceedings of IEEE GLOBECOMˊ03， San Francisco， 2003(12)：3316～3320
7	Chindapol A ， Ritcey J A . Design，analysis，and performance evaluation for BICM-ID with QAM constellations in rayleigh fading channels. IEEE Journal on Selected Areas in Communications， 2001，19(5): 944～957
8	Tan J ， Stuber G L . Analysis and design of symbol mappers for iteratively decoded BICM. IEEE Transactions on Communications， Mar2005
9	Gallager R G . Low-density parity-check codes. IRE Transactions on Information Theory， 1962，8（1）: 21～28
10	MacKay D J C . Good error-correcting codes based on very sparse matrices. IEEE Transactions on Information Theory， 1999，45(2): 399～431
11	Brink S Ten ， Kramer G ， Ashikhmin A . Design of low-density parity-check codes for modulation and detection. IEEE Transactions on Communications， 2004，52(4): 670～678
12	Hou J L ， Siegel P H ， Milstein L B . Design of multi-input multi-output systems based on low-density parity-check codes. IEEE Transactions on Communications， 2006，53(4): 601～611
13	Li Y ， Ryan W E . Bit-reliability mapping in LDPC-coded modulation systems. IEEE Transactions on Communications Letters， 2005，9（1）: 1～3
14	Maddock R D ， Banihashemi A H . Reliablity-based coded modulation with low-density parity-check codes. IEEE Transactions on Communications， 2006，54(3): 403～406
15	Tran Nghi H ， Nguyen Ha H . Signal mappings of 8-ary constellations for bit-interleaved coded modulation with iterative decoding. IEEE Transactions on Broadcasting， 2006，5(2): 92～99
16	Schreckenbach F ， Bauch G . EXIT charts for iteratively decoded，multilevel modulation.In： 12th European Signal Processing Conference， 2004(9)：1557～1560
17	Muhammad N S ， Speidel J . Joint optimization of signal constellation and bit labeling for bit-interleaved coded modulation with iterative decoding. IEEE Communications Letters， 2005，9(9): 775～777
18	Gorokhov ， Dijk M . Optimized labeling maps for bit-interleaved transmission with turbo demodulation.In： IEEE VTS 53rd Vechicular Technology Conference， Tokyo，Japan， 2001
19	Ashikhmin A ， Kramer G ， Brink S Ten . Extrinsic information transfer functions：model and erasure channel properties. IEEE Transactions on Information Theory， 2004，50(11): 2657～2673
20	MacKay D J C . Encyclopedia of sparse graph codes. ， 2007，1

LDPC编码的BICM迭代系统中的映射方案研究

Research on Labeling Strategy for LDPC Coded BICM-ID Systems

在线阅读

PDF下载

可视化

被引次数

摘要/Abstract

引用本文

使用本文

图/表 6

参考文献 20

相关文章 1

Metrics

推荐阅读 0