原型图LDPC 码编码的高谱效率BICM 交织器优化

doi:10.3969/j.issn.0255-8297.2014.01.006

应用科学学报 ›› 2014, Vol. 32 ›› Issue (1): 32-38.doi: 10.3969/j.issn.0255-8297.2014.01.006

原型图LDPC 码编码的高谱效率BICM 交织器优化

窦金芳1，何善宝2，姜明3

1. 中国空间技术研究院西安分院空间微波技术重点实验室，西安710100
2. 中国空间技术研究院，北京100094
3. 东南大学移动通信国家重点实验室，南京210096

收稿日期:2012-03-08 修回日期:2012-08-15 出版日期:2014-01-31 发布日期:2012-08-15
作者简介:姜明，博士，副研究员，研究方向：移动通信系统中的关键技术、信道纠错编码，E-mail：jiangming1976@gmail.com
基金资助:
空间微波技术重点实验基金(No.9140C530401120C5201)资助

Optimized Interleaver for Protograph LDPC Coded BICM with High Spectral Efficiency

DOU Jin-fang1, HE Shan-bao2, JIANG Ming3

1. National key Laboratory of Science and Technology on Space Microwave,
China Academy of Space Technology (Xi’an), Xi’an 710100, China
2. China Academy of Space Technology, Beijing 100094, China
3. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China

Received:2012-03-08 Revised:2012-08-15 Online:2014-01-31 Published:2012-08-15

摘要/Abstract

摘要： 对于原型图低密度奇偶校验(P-LDPC)码的比特交织编码调制系统，P-LDPC码和比特交织器是系统获得良好性能的关键. 针对高阶QAM调制的P-LDPC码编码调制系统，采用修正的EXIT方法分析了不同变量节点度数匹配交织映射方案下系统的收敛门限，从而提出一种基于节点度数匹配的通用交织优化设计准则. 数值分析和仿真结果验证了优化准则的正确性.

关键词: 原型图, 低密度奇偶校验码, 比特交织编码调制

Abstract: As a crucial part in bit-interleavered coded modulation (BICM), protograph low-density paritycheck(P-LDPC) codes and interleavers can greatly improve the performance of a BICM system. In this paper, we use a modified EXIT analysis method to analyze thresholds for a P-LDPC coded BICM system
with high-order QAM in different variable degree matched mapping (VDMM) schemes. A general criterion for optimization of VDMM interleavers is proposed. Results of numerical analysis and simulation show correctness of the optimization criterion.

Key words: protograph, low-density parity-check (LDPC) codes, bit interleaved coded modulation (BICM)

中图分类号:

TN91

窦金芳1，何善宝2，姜明3. 原型图LDPC 码编码的高谱效率BICM 交织器优化[J]. 应用科学学报, 2014, 32(1): 32-38.

DOU Jin-fang1, HE Shan-bao2, JIANG Ming3. Optimized Interleaver for Protograph LDPC Coded BICM with High Spectral Efficiency[J]. Journal of Applied Sciences, 2014, 32(1): 32-38.

参考文献

[1] CAIRE G, TARICCO G, BIGLIERI E. Bit-interleaved coded modulation [J]. IEEE Transactions on Information Theory, 1998, 44(5): 927-946.

[2] GOFF S Y L. Signal constellations for bit-interleaved coded modulation [J]. IEEE Transactions Inform. Theory, 2003, 49(1): 307-313.

[3] VALLES E L. Constellation design for improved iterative LDPC decoding [C]//IEEE Aerospace Conference, 2008

[4] MUHAMMAD N S, SPEIDEL J. Joint optimization of signal constellation and bit labeling for bit-interleaved coded modulation with iterative decoding [J]. IEEE Communications Letters, 2005, 9(9): 775-777.

[5] SANDBERG S, DEETZEN N. Design of bandwidth-efficient unequal error protection LDPC codes [J]. IEEE Transactions on Communications, 2010, 58(3): 802-811.

[6] ZHANG L, KSCHISCHANG F R. Design of multi-edge-type LDPC codes for high-order coded modulation [C]//12th Canadian Workshop on Information Theory (CWIT), 2011.

[7] LI Y, RYAN W E. Bit-reliability mapping in LDPC-coded modulation [J]. IEEE Communications Letters, 2005, 9(1): 1-3.

[8] DIVSALAR D, JONES C. Protograph based low error floor LDPC coded modulation [C]//Military Communications Conference, Oct. 2005.

[9] LEI J, GAO W, SPASOJEVIC P, YATES R. Demultiplexer design for multi-edge type LDPC coded modulation [C]//Proc. IEEE Int. Symp. on Inf. Theory, 2009.

[10] LEI J, GAO W. Matching graph connectivity of LDPC codes to high-order modulation by bit interleaving [C]//46-th Annual Allerton Conference, UIUC（全拼？）, Illinois, USA, Sept. 2008.

[11] YANG H K, YANG K. Optimization of degree-profile matching interleavers for LDPC-coded modulation [J]. IEEE Transactions on Communications, 2006, 10(12): 843-845.

[12] RICHTER G, HOF A, BOSSERT M. On the mapping of low-density parity-check codes for bit-interleaved coded modulation [C]//Proc. IEEE ISIT, Nice, France, Jun. 2007.

[13] NOWAK S, KAYS R. An interleaving scheme for efficient binary LDPC coded higher-order modulation [C]//International ITG Conference on Source and Channel Coding, 2010.

[14] ALVARADO A, AGRELL E, SZCZECINSKI L, SVENSSON A. Exploiting UEP in QAM-based BICM interleaver and code design [J]. IEEE Transactions on Communications, 2010, 58(2): 500-510.

[15] 许成鑫，常永宇，杨鸿文，张欣. 利用LDPC码度分布的QAM方案 [J]. 北京邮电大学学报，2010, 33(1): 89-92.

XU Chengxin, CHANG Yongyu, YANG Hongwen, ZHANG Xin. QAM scheme using degree distribution of LDPC codes [J]. Journal of Beijing University of Posts and Telecommunications, 2010, 33(1): 89-92. (in Chinese)

[16] DIVSALAR D, DOLINAR S, JONES C, et al. Capacity approaching protograph codes [J]. IEEE Journal on Selected Areas in Communications, 27(6): 876-888, 2009

[17] Jin Y, Jiang M, Zhao C. Optimized variable degree matched mapping for protograph LDPC coded modulation with 16QAM [C]//6th International Symposium on Turbo Codes & Iterative Information Processing, 2010.

[18] SMITH B P, KSCHISCHANG F R. Future prospects for FEC in fiber-optic communications [J]. IEEE Journal of Selected Topics in Quantum Electronics, 2010, 16(5): 1245-1257.

[19] BRINK S T, KRAMER G, ASHIKHMIN A. Design of low-density parity-check codes for modulation and detection [J]. IEEE Transactions on Communications,2004, 52(4): 670-678.

原型图LDPC 码编码的高谱效率BICM 交织器优化

Optimized Interleaver for Protograph LDPC Coded BICM with High Spectral Efficiency

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