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所属单位：电子信息工程学院

发表刊物：MATHEMATICAL PROBLEMS IN ENGINEERING

关键字：FEEDBACK OPTIMIZATION

摘要：The aim of this paper is to investigate a linear precoding scheme design for a multiple-input multiple-output two-way relay system with imperfect channel state information. The scheme design is simplified as an optimal problem with precoding matrix variables, which is deduced with the maximum power constraint at the relay station based on the minimum mean square error criterion. With channel feedback delay at both ends of the channel and the channel estimation errors being taken into account, we propose a matrix decomposition scheme and a joint iterative scheme to minimize the average sum mean square error. The matrix decomposition method is used to derive the closed form of the relay matrix, and the joint iterative algorithm is used to optimize the precoding matrix and the processing matrix. According to numerical simulation results, the matrix decomposition scheme reduces the system bit error rate (BER) effectively and the joint iterative scheme achieves the best performance of BER against existing methods.

ISSN号：1024-123X

是否译文：否

发表时间：2017-01-01

合写作者：Su, Jun-xu,朱秋明,F70206162,Fang, Zhu

通讯作者：陈小敏