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联合检测多用户MIMO MC-CDMA的译码

夏 飞 鄷广增   

  1. 南京邮电大学 通信与信息工程学院，江苏 南京 210003

  • 收稿日期:2006-10-03 修回日期:2007-06-12 出版日期:2007-09-30 发布日期:2007-09-30

Joint Detection with Delay Coding for Multi-user MIMO MC-CDMA Systems

XIA Fei, FENG Guang-zeng   

  1. College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2006-10-03 Revised:2007-06-12 Online:2007-09-30 Published:2007-09-30

摘要： 将经过延时编码的联合检测（joint detection，JD）算法用于多用户MIMO MC-CDMA下行系统。仿真实验表明，与V¬BLAST检测算法相比，延时编码的JD检测算法性能良好，并能应用于VBLAST无法应用的接收天线数目少于发送天线数目的MIMO系统。本文还分析了2发2收时用Alamouti编码来代替延时编码的误码率性能。

关键词: 多输入多输出, 多载波CDMA, 联合检测

Abstract: In this paper, a joint detection (JD) technique with delay coding is used for the downlink of multi-user MIMO MC-CDMA systems. Compared with VBLAST downlink signal detection, JD detection provides better performances and can be applied in case the number of receiving antennas is less than transmitting antennas. The paper also studies bit error rate of the system using Alamouti coding with two transmitters and two receivers.

Key words: MIMO, multicarrier-code division multiple access (MC-CDMA), joint detection (JD)