J4 ›› 2009, Vol. 36 ›› Issue (4): 639-644.

• 研究论文 • 上一篇    下一篇

多用户MIMO系统上行检测算法

李川1;刘伟2;陈睿2;黄鹏宇2;周利华1   

  1. (1. 西安电子科技大学 多媒体技术研究所,陕西 西安  710071;
    2. 西安电子科技大学 综合业务网理论及关键技术国家重点实验室 ,陕西 西安  710071)
  • 收稿日期:2009-03-17 出版日期:2009-08-20 发布日期:2009-09-28
  • 通讯作者: 李川
  • 基金资助:

    国家杰出青年科学基金资助(60725105);国家重点基础研究发展计划(973计划)课题资助(2009CB320404);“多体制信号识别与调制解调技术研究” (863计划)课题资助(2007AA01Z288);“长江学者和创新团队发展计划”资助;国家自然科学基金项目资助(60572146);高等学校博士学科点专项科研基金资助(20050701007);高等学校优秀青年教师教学科研奖励计划资助;教育部科学技术研究重点项目资助(107103);“高等学校创新引智计划”资助(B08038)

Uplink detection algorithms in multiuser MIMO systems

LI Chuan1;LIU Wei2;CHEN Rui2;HUANG Peng-yu2;ZHOU Li-hua1   

  1. (1. Research Inst. of Multimedia Technology, Xidian Univ., Xi'an  710071, China;
    2. State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2009-03-17 Online:2009-08-20 Published:2009-09-28
  • Contact: LI Chuan

摘要:

针对多用户MIMO上行传输系统提出了两种新型的多用户检测算法.利用块对角化技术将多用户MIMO系统并行或者串行地分解为多个单用户MIMO系统,从而使得适用于单用户MIMO系统的算法可以直接应用,极大地降低了系统的复杂度.仿真结果表明,该算法能够达到与相应单用户MIMO系统相同的性能,而与传统的迫零算法相比,性能有很大的提高.此外,理论分析与实验结果表明,串行多用户检测算法性能优于并行多用户检测算法.

关键词: 块对角化, 并行多用户检测, 串行多用户检测, 多用户MIMO, 单用户MIMO, 迫零

Abstract:

We propose two novel uplink multiuser detection (MUD) algorithms for Multi-User Multiple Input Multiple Output (MU-MIMO) systems. Based on block diagonalization (BD) technique the proposed parallel and successive MUD algorithms can decompose the MU-MIMO system into parallel single user MIMO (SU-MIMO) systems, which enables the SU-MIMO based algorithms to be directly applied and significantly reduces complexity. Simulation results show that the proposed algorithms are capable of achieving the same performance as the corresponding SU-MIMO system and have a substantial performance gain against the traditional zero-forcing (ZF) based algorithm. Furthermore, theoretical analysis and simulation results demonstrate that the successive BD algorithm significantly outperforms the parallel one.

Key words: block diagonalization, parallel multiuser detection, successive mutiuser detection, multi-user MIMO, single-user MIMO, zero-forcing

中图分类号: 

  • TN911.5