基于功率的双向AF MIMO中继系统收发器设计  

Transceiver Design for Two- way AF MIMO Relay Systems Based on Power Consumption

作　　者：吴昊[1] 梁晓雯[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,安徽合肥230027

出　　处：《无线电工程》2016年第7期8-11,83,共5页Radio Engineering

摘　　要：针对多用户对双向放大转发多输入多输出中继系统中用户和中继的收发器联合设计问题,基于节省功率的目的,提出了在满足每个用户均方误差约束的条件下最小化用户和中继总功率的优化问题。由于所形成的优化问题是非凸的,难以求得全局最优解,因此将原问题分解为3个便于处理的子问题,对这3个子问题分别进行求解,在此基础上提出了一种基于交替优化的迭代算法去求解原问题。仿真结果表明,所提算法相较于其他算法可以有效地节省用户和中继的总功率。In view of the joint transceiver design for users and relay in multiple user pairs two-way amplify-and-forward （AF） multiple input multiple output （MIMO） relay systems, and for the purpose of power saving, an optimization problem is proposed to mini- mize the total power consumption of relay and users under the mean square error （MSE） constraint of each user.Due to the non-convex- ity, it is difficult to obtain the globally optimal solution of this problem.Therefore the original problem is decomposed into three easier sub-problems,which are solved respectively. Then an iterative algorithm based on alternating optimization is proposed to solve the original problem.Simulation results show that the proposed algorithm can save the total power of users and relay effectively as compared to other algorithms.

关 键 词：双向放大转发多输入多输出中继 多用户对 均方误差 收发器联合设计 基于交替优化的迭代算法 

分 类 号：TN92[电子电信—通信与信息系统]