Simplified Alternating Optimization for Robust MMSE MIMO Transceiver

摘要：

We consider a worst-case robust transceiver design for multiple-input multiple-output (MIMO) channels, under the minimum mean square error (MMSE) criterion, to combat against the imperfection of channel state information (CSI). The joint robust transceiver design is formulated as a minimax problem. We show that for a given precoder (equalizer), the optimal robust equalizer (precoder) is obtained in a semi-closed form by channel diagonalization. Thus, a joint robust transceiver can be efficiently achieved by alternately optimizing the equalizer and precoder, where in each iteration only a power allocation problem is to be solved. We also propose efficient algorithms to solve the power allocation problems in each iteration.

关键词： Alternating optimization imperfect CSI MIMO minimax MMSE worst-case robustness.

作者: Jiaheng Wang Mats Bengtsson

作者单位: National Mobile Communications Research LaboratorySoutheast UniversityNanjing, China Signal Processing, ACCESS Linnaeus Center KTH Royal Institute of Technology Stockholm, Sweden

会议类型: 国际会议

会议名称: 2011年无线通信与信号处理国际会议(WCSP 2011)

会议地点: 南京

会议语种:英文

页码: 1-5

在线出版日期: 2011-11-09（万方平台首次上网日期，不代表论文的发表时间）