Approximately Optimal Transmit Precoding for MIMO Systems with Imperfect Feedback Using Directional Derivative
An approximately optimal transmit precoding for MIMO systems with imperfect feedback,subject to sum power constraint,is proposed in this paper by using directional derivative.The proposed method is easily carried out,and can be applied to more general channel which follows a nonwhite covariance and nonzero mean complex Gaussian distribution.Additionally, a closed-form solution for power allocation is given,which has not been addressed before.Simulation results demonstrate the effectiveness of the sub-optimal algorithm.
DAI Jisheng SUN Yueping QIN Yun
College of Electronic and Information Engineering,Jiangsu University,Zhenjiang 212013,P.R.China
国际会议
The 30th Chinese Control Conference(第三十届中国控制会议)
烟台
英文
1-4
2011-07-01（万方平台首次上网日期，不代表论文的发表时间）