J4 ›› 2010, Vol. 37 ›› Issue (2): 192-196.doi: 10.3969/j.issn.1001-2400.2010.02.003

• 研究论文 • 上一篇    下一篇

采用独立分量分析的多用户MIMO下行传输策略

李钊;杨家玮;姚俊良;陈婷   

  1. (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:2009-02-27 出版日期:2010-04-20 发布日期:2010-06-03
  • 通讯作者: 李钊
  • 作者简介:李钊(1981-),男,讲师,博士,E-mail: zli_19912@126.com.
  • 基金资助:

    国家杰出青年科学基金资助项目(60725105);国家重点基础研究发展计划(973计划)课题资助项目(2009CB320404);长江学者和创新团队发展计划资助项目(IRT0852);863计划课题资助(2007AA01Z288);高等学校引智计划资助项目(B08038);教育部科学技术研究重点资助项目(107103)

Multiuser MIMO downlink transmission strategy using independent component analysis

LI Zhao;YANG Jia-wei;YAO Jun-liang;CHEN Ting   

  1. (State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2009-02-27 Online:2010-04-20 Published:2010-06-03
  • Contact: LI Zhao

摘要:

提出一种多用户MIMO下行传输策略,解决了无可用信道信息场景中的MIMO广播信道通信问题.应用该策略,基站选择一组用户同时通信,每个用户对应一根基站发射天线.移动用户利用独立分量分析的算法从接收混合信号中分离出属于自己的信号分量.仿真结果表明,在无信道信息的情况下,采用该策略能够成功实现下行广播通信.

关键词: 多用户, MIMO系统, 广播信道, 信道状态信息, 反馈, 独立分量分析

Abstract:

We introduce a multiuser MIMO (MU-MIMO) downlink transmission strategy to solve the transmission problem for MIMO broadcast channels without available channel state information (CSI). By use of the scheme, base station (BS) selects a set of mobile stations (MS) and communicate simultaneously. Each transmit antenna at BS corresponds to an MS in the active user subset. The MS applies independent component analysis (ICA) algorithm to demix different components from the received mixing signals and identifies its own. Simulation results show that by applying the proposed strategy, MU-MIMO downlink transmission can be implemented successfully without CSI.

Key words: multiuser, MIMO system, broadcast channels, channel state information, feedback, independent component analysis