数据采集与处理2019，Vol.34Issue(2)：252-261,10.DOI:10.16337/j.1004-9037.2019.02.007
基于不完全信道状态信息的多用户MIMO中继系统预编码算法
Linear Precoding Algorithm for Multi-user MIMO Relay System with Imperfect Channel State Information
摘要
Abstract
For up-link multi-user multiple-input multiple-output relay systems, with the aim of minimizing the bit error rate, a linear precoding scheme design is proposed based on the minimum mean-squared error (MMSE) rule in the presence of the feedback delay and channel estimation error. The proposed precoding algorithm decomposes the constrained optimization problem into three sub-convex optimization problems that are solved separately. The transmitter equipped with single antenna is subject to independent distribution, and it can be assumed that the precoding matrix is a diagonal matrix. The convex optimization problem of relay matrix is transformed into semi-definite programming problem (SDP), which can be solved by CVX toolbox. The equalizer matrix can be introduced by the gradient-based line search algorithms. Then the optimal solution is obtained by using joint iteration. The simulation results show that the proposed scheme can achieve better system performance.关键词
多用户MIMO中继系统/不完全信道状态信息/预编码/反馈延迟/误比特率Key words
multi-user MIMO relay system/imperfect channel state information (CSI)/precoding/feedback delay/bit error rate (BER)分类
信息技术与安全科学引用本文复制引用
陈小敏,方竹,胡续俊,朱秋明,陈兵..基于不完全信道状态信息的多用户MIMO中继系统预编码算法[J].数据采集与处理,2019,34(2):252-261,10.基金项目
中央高校基本科研业务费专项资金(NS2016044,NS2015046)资助项目 （NS2016044,NS2015046）
江苏省博士后基金(1601017C)资助项目 （1601017C）
江苏省普通高校专业学位研究生科研创新计划(SJLX16_0111)资助项目 （SJLX16_0111）
南京航空航天大学研究生创新基地(实验室)开放基金(kfjj20160412)资助项目 （实验室）
