吉林大学学报(信息科学版)

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多天线OFDM系统全速率空时编码的分析与设计

卢照敢1,2, 庞香蕊3, 周伟杰4, 汤海燕5   

  1. 1. 河南财经政法大学 计算机与信息工程学院, 郑州 450002; 2. 西安交通大学 电子与信息工程学院, 西安 710049;3. 辽宁大学 环境学院, 沈阳 110036;4. 香港理工大学 工程学院, 香港; 5. 吉林大学 通信工程学院, 长春 130012
  • 收稿日期:2013-07-07 出版日期:2013-09-24 发布日期:2014-04-04
  • 作者简介:卢照敢(1977—), 男, 河南安阳人, 河南财经政法大学讲师, 博士后, 主要从事无线通信技术、 信号与信息处理研究, (Tel)86-18503885285(E-mail)luzhaogan@126.com。
  • 基金资助:

    国家自然科学基金资助项目(90207012); 河南省教育厅科学技术研究重点基金资助项目(12A510001); 辽宁省科学技术基金资助项目(20121033)

Design and Analysis of Full Diversity Full Rate Space Time Codes in Multiple Antenna OFDM Systems

LU Zhao-gan1,2, PANG Xiang-rui3, ZHOU Wei-jie4, TANG Hai-yan5   

  1. 1. School of Computer & Information Engineering, Henan University of Economics and Law, Zhengzhou 450002, China;2. School of Electronic and Information Engineering, Xi'an Jiaotong Universtiy, Xi'an 710049, China;3. College of Environmental Sciences, Liaoning University, Shenyang 110036, China; 4. Faculty of Engineering, The Hongkong Polytechnic University, Hongkong; 5. College of Communication Engineering, Jilin University, Changchun 130012, China
  • Received:2013-07-07 Online:2013-09-24 Published:2014-04-04

摘要:

多天线OFDM(Orthogonal Frequency Division Multiplexing)系统环境下, 针对现有全分集全速率空时编码分集复用交换之间的关系问题, 在多天线OFDM系统模型下推导了其分集和复用增益交换曲线, 进一步证实了FDFR(Full Diversity Full Rate)空时编码是一种最优的分集复用交换空时编码。给出了实现全分集全速率空时编码的设计方法。理论分析表明, 全分集全速率空时编码具有较好的空间链路适应性。在中国未来通用无线环境研究计划(FuTURE: Future Technologies for a Universal Radio Environment)的系统配置条件下, 仿真了全分集全速率空时编码的性能并与其他现有最优空时编码的性能进行对比。结果表明, 全分集全速率空时编码具有更好的链路适应性和较好的性能。

关键词: 多天线, 空时编码, 分集复用交换, 正交频分复用

Abstract:

For the space time codes in the multiple antenna OFDM (Orthogonal Frequency Division Multiplexing) systems, one could obtain the tradeoff between diversity and multiplex gains as their performance metric, which is the indictor of their adaptations in wireless links. So, the tradeoff relationships of diversity and multiplex gains were deduced in the scenarios of multiple antenna OFDM system settings. The tradeoff is optimal and indicates whether the space time codes are the optimal space time design schemes. It could obtain full diversity and full rate (FDFR:Full Diversity Full Rate) gain with better spatial link adaptations. Aiming at the China FuTURE 4G system configurations, one design of the FDFR space time codes was presented. Compared with other optimal space time designs, its performance analysis and test results verified its better performance in terms of spatial link adaptations and system symbol rates.

Key words: multipleantenna, space time codes, diversity and multiplex tradeoff, orthogonal frequency division multiplexing(OFDM)

中图分类号: 

  • TN911.72