上海交通大学学报(自然版) ›› 2011, Vol. 45 ›› Issue (03): 375-0378.

• 无线电电子学、电信技术 • 上一篇    下一篇

基于非理想信道状态信息的鲁棒矢量预编码设计

 施奇铭, 蒋铃鸽, 何晨   

  1. (上海交通大学 电子信息与电气工程学院, 上海 200240)
  • 出版日期:2011-03-30 发布日期:2011-03-30
  • 基金资助:

    国家高技术研究发展计划(863)项目(2009AA011505),国家自然科学基金资助项目(60872017,60772100),国家自然科学基金重点项目(60832009)

Robust Vector Precoding with Imperfect Channel State Information

Shi-Qi-Ming, JIANG  Ling-Ge, HE  Chen   

  1. (School of Electronic, Information  and Electrical Engineering, Shanghai Jiaotong University,Shanghai 200240, China)
  • Online:2011-03-30 Published:2011-03-30

摘要:  在多用户多输入多输出(MIMO)系统中,提出一种适用于非理想信道的鲁棒矢量预编码设计方法.使用非理想信道模型,发射端仅获得部分信道状态信息,即已知信道估计值及信道误差值的一阶和二阶统计量,利用已知的信道条件并最小化收发信号的均方误差,推导出鲁棒的矢量预编码矩阵和扰动矢量.仿真表明,该鲁棒预编码方法比传统方法具有更好的性能.

关键词: 多输入多输出, 矢量预编码, 部分信道状态信息

Abstract:
A robust vector precoding scheme is proposed for imperfect channel in multiuser MIMO system. In the nonideal channel model, the transmit side only knows imperfect channel state information, i.e. the mean value of the channel estimation and the 1st and the 2nd order statistic value of the estimation error. Based on this channel model, the robust VP precoding matrix and perturbation vector are obtained by minimizing the mean square error of the transmitted and received signals. Simulation results show that the new precoding scheme outperforms the conventional scheme.

Key words:  multiple input multiple output (MIMO), vector precoding (VP), imperfect channel state information

中图分类号: