收稿日期: 2014-07-29
修回日期: 2014-11-28
网络出版日期: 2015-05-15
基金资助
国家自然科学基金(11175173)资助
A linear transceiver design for multiuser MIMO relay downlink systems
Received date: 2014-07-29
Revised date: 2014-11-28
Online published: 2015-05-15
王川 , 邱玲 . MIMO下行多用户中继系统的线性收发处理设计[J]. 中国科学院大学学报, 2015 , 32(3) : 378 -383 . DOI: 10.7523/j.issn.2095-6134.2015.03.013
A linear transceiver optimization design based on the regularized block diagonalization (RBD) algorithm is proposed for the multiuser multiple-input multiple-output (MU-MIMO) relay downlink system. Considering that the source can not obtain the channel state information (CSI) of the second hop and the user can not obtain the CSI of the first hop, we optimize the transceiver design for the source-relay link and the relay-multiuser link, respectively. We use RBD algorithm at the relay to reduce the multiuser interference and noise, and then joint the receiver matrix to design an improved iterative algorithm based on the minimum mean square error (MMSE) criterion. Simulation results show that the proposed algorithm converges to a fixed value in a few iterations and it has a good bit error rate (BER) performance within the low signal-to-noise ratio (SNR) region.
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