比特交织空时编码调制分集研究

doi:10.13190/jbupt.200803.115.290

北京邮电大学学报 ›› 2008, Vol. 31 ›› Issue (3): 115-118.doi: 10.13190/jbupt.200803.115.290

比特交织空时编码调制分集研究

丁义1, 袁超伟2

1. 德州学院计算机系, 德州 253023; 2. 北京邮电大学通信网络综合技术研究所, 北京 100876

收稿日期:2007-10-17 修回日期:1900-01-01 出版日期:2008-06-28 发布日期:2008-06-28
通讯作者: 丁义

Research on Modulation Diversity of Bit-Interleaved Space-Time Coded Modulation

DING Yi1, YUAN Chao-wei2

1. Department of Computer Science and Technology, Dezhou University, Dezhou 253023, China;
2. Institute of Telecommunication Network Technology, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2007-10-17 Revised:1900-01-01 Online:2008-06-28 Published:2008-06-28
Contact: DING Yi

摘要/Abstract

摘要：

提出了比特交织空时编码调制分集方案，给出了调制分集的实现方法和获得最大分集增益的星座最优旋转角，分析了调制分集对比特交织空时编码调制迭代译码（BI-STCM-ID）系统性能的影响，得到了引入调制分集后系统的解码比特度量以及成对差错概率的解析表达式.　理论分析和仿真结果表明，调制分集极大地改善了BI-STCM-ID系统在Rayleigh信道下的性能，同时，空时分集与调制分集的结合，对改善快衰落信道和慢衰落信道的性能具有相互补充的效果.

关键词: 比特交织编码调制, 调制分集, 旋转星座

Abstract:

The modulation diversity scheme of bit-interleaved space-time coded modulation was proposed. The method to achieve modulation diversity and the optimal rotated angle of the constellation to reach the maximum diversity gain were analyzed. The impact on the system of bit-interleaved space-time coded modulation with iterative decoding (BI-STCM-ID) was studied. The expression of pairwise error possibility (PEP) and bit metric for decoding were presented. Analysis and simulation results show that modulation diversity can greatly improve the performance of BI-STCM-ID under Rayleigh fading channels. Furthermore, modulation diversity combined with space-time diversity has the complementary effects on improving the performance of both fast and slow fading channels.

Key words: bit interleaved coded modulation, modulation diversity, rotated constellation

中图分类号:

TN911.3

丁义1, 袁超伟2. 比特交织空时编码调制分集研究[J]. 北京邮电大学学报, 2008, 31(3): 115-118.

DING Yi1, YUAN Chao-wei2. Research on Modulation Diversity of Bit-Interleaved Space-Time Coded Modulation[J]. JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM, 2008, 31(3): 115-118.

参考文献

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比特交织空时编码调制分集研究

Research on Modulation Diversity of Bit-Interleaved Space-Time Coded Modulation

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