English

应用科学学报

• 论文 • 上一篇    下一篇

联合天线选择的上行Alamouti MIMO多用户检测

张晓格 徐澄圻   

  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:2007-04-10 修回日期:2007-12-27 出版日期:2008-03-31 发布日期:2008-03-31

Uplink Multi-user Alamouti MIMO Detection with Antenna Selection

ZHANG Xiao-ge, XU Cheng-qi   

  1. College of Communication and Information, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2007-04-10 Revised:2007-12-27 Online:2008-03-31 Published:2008-03-31

被引次数

4

摘要： 提出两种提高上行多用户MIMO检测分集增益的方法，即排序连续用户取消（OSUC）检测和天线选择技术。对于天线选择，给出了关于OSUC检测的选择准则：最大最小检测用户SINR和最大第1检测用户SINR，以及关于非OSUC检测的选择准则：最大最小检测用户SINR。最后利用Sherman–Morrison公式降低了计算复杂度。仿真表明OSUC检测获得的分集增益非常有限，而天线选择在被选择的天线数不低于2(P-1)+1时获得的分集增益和使用全部接收天线时的分集增益相当。

关键词: 天线选择, 排序连续用户取消, 多输入多输出, 分集增益

Abstract: To improve the diversity benefit of the uplink multi-user MIMO detection, the ordered successive user cancellation (OSUC) detection and the antenna selection technique are applied. Two antenna selection criteria for OSUC detection called max-min user SINR and max-first user SINR are proposed. The selection criterion for non-OSUC detection called max-min user SINR is also proposed. The Sherman-Morrison formula is used to reduce computation complexity. Simulation results show that OSUC detection obtains only a little more diversity benefit, and antenna selection obtains almost all the diversity benefit of the full complexity system when no less than 2(P-1)+1 antennas are selected.

Key words: antenna selection, OSUC, MIMO, diversity benefit