Linear transceiver design for MIMO multiple-relay systems based on MMSE criterion

被引：0
作者：
机构：
[1] Department of Electronics and Communication Engineering, Sun Yat-Sen University, Guangzhou
[2] College of Information Science and Engineering, Guangxi University for Nationalities, Nanning
来源：
Li, Q.-Z. (lqzhong2005@126.com) | 1600年 / Chinese Institute of Electronics卷 / 40期
关键词：
Linear transceiver; Mean squared error (MSE); Multiple-input multiple-output (MIMO); Multiple-relay;
D O I：
10.3969/j.issn.0372-2112.2012.07.006
中图分类号：
学科分类号：
摘要：
This paper considers linear transceiver design for amplify-and-forward multiple-input multiple-output (MIMO) multiple-relay systems, aiming to minimize the mean squared error (MSE) under the total relay transmit power constraint. We first introduce the singular value decomposition (SVD) of matrix product and simplify the original optimization problem to one which takes a singular value vector and a unitary matrix as optimization variables. By employing variable substitution and penalty term, the simplified problem only has one unitary matrix constraint. Then we develop a new Riemann Euclidean steepest descent algorithm to deal with the unitary matrix constraint. Finally, simulation results demonstrate that the performance of the proposed scheme is better than traditional schemes and closes to the lower bound of MSE.
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页码：1323 / 1327
页数：4
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