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应用科学学报 ›› 2005, Vol. 23 ›› Issue (4): 350-354.

• 论文 • 上一篇    下一篇

基于软干扰消除的MIMO-OFDM系统迭代检测算法

侯永民, 戎蒙恬   

  1. 上海交通大学电子工程系, 上海 200030
  • 收稿日期:2004-04-15 修回日期:2004-09-08 出版日期:2005-07-31 发布日期:2005-07-31
  • 作者简介:侯永民(1978-),山西河津人,博士生,E-mail:hyongmin@sjtu.edu.cn;戎蒙恬(1952-),上海人,教授,博导,E-mail:mtrong@sjtu.edu.cn

An Iterative Detection Scheme for MIMO-OFDM Systems

HOU Yong-min, RONG Meng-tian   

  1. Department of Electronics Engineering, Shanghai Jiaotong University, Shanghai 200030, China
  • Received:2004-04-15 Revised:2004-09-08 Online:2005-07-31 Published:2005-07-31

PDF

171

被引次数

12

摘要： 提出了一种新颖MIMO-OFDM系统的迭代检测方案,该方案充分利用了系统提供的频率和空间分集.通过在迭代处理中使用外部信息来利用由rich-scattering环境所提供的空间频率分集,来获得理想的系统容量.为了进一步提高系统性能,又提出了一种基于软干扰消除的检测算法.分析和仿真结果表明,新提出的接收机方案获得了很好的性能.

关键词: MIMO-OFDM系统, 未来无线通信系统, 迭代检测算法, 软干扰消除

Abstract: MIMO-OFDM system is a promising scheme for achieving high data rates over the future broadband wireless networks.For traditional MIMO-OFDM, the frequency diversity is not fully utilized.In this paper a novel iterative detection scheme for the MIMO-OFDM system which exploits both frequency and spatial diversity is proposed.Through iterative processing, the extrinsic information can be used to exploit the spatial-frequency diversity of the rich scattering environment, thereby achieving the capacity limit of the system.And for further improvement of the system's performance, a soft interference cancellation based receiver is presented, too. The analysis and simulation results show that the proposed detection scheme achieves an enhanced performance.

Key words: future wireless communication system, iterative detection, MIMO-OFDM, soft interference cancellation

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