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应用科学学报 ›› 2006, Vol. 24 ›› Issue (6): 573-576.

• 论文 • 上一篇    下一篇

多天线系统的推广PDA算法及其迭代检测

肖海勇, 毕光国, 金秀峰   

  1. 东南大学移动通信国家重点实验室, 江苏南京 210096
  • 收稿日期:2005-09-23 修回日期:2005-11-16 出版日期:2006-11-30 发布日期:2006-11-30
  • 作者简介:肖海勇,博士生,研究方向:信道编码和多天线系统等,E-mail:xiaohy@xinhuanet.com;毕光国,教授,博导,研究方向:超宽带无线通信,E-mail:bigg@seu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(60496311)

Generalized PDA Algorithm and Iterative Detection for MIMO System

XIAO Hai-yong, BI Guang-guo, JIN Xiu-feng   

  1. National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
  • Received:2005-09-23 Revised:2005-11-16 Online:2006-11-30 Published:2006-11-30

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摘要： 针对接收天线数少于发送天线数并且大于发送天线数一半的多天线系统,在研究原有PDA检测算法的基础上,提出了推广的PDA检测算法,并讨论了影响算法性能的因素和改进方法,之后对算法进行了修改使之能够适用于迭代检测.仿真表明推广的PDA检测算法能够有效改进检测性能,迭代后大大提高了系统性能.

关键词: 多天线系统, 迭代检测, PDA算法

Abstract: By studying the existing probabilistic data association (PDA) algorithm for MIMO system, this paper proposed a generalized probabilistic data association (GPDA) algorithm for system with the number of receiving antennas less than transmitting antennas and more than half of transmitting antennas.Factors affecting the system performance are discussed, and the GPDA algorithm is revised to be suitable for iterative detection.Simulation results indicate that the GPDA method can effectively improve the detection performance, and the iterative detection can further improve the performance.

Key words: multi-antenna system, iterative detection, PDA algorithm

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