The Global Optimality of the MIMO Cooperative System with Source and Relay Precoders for Capacity Maximization

作     者：Park, Wonwoo Jeong, Sungheon Song, Hong-Yeop Lee, Chungyong 

作者机构：Yonsei Univ Dept Elect & Elect Engn Seoul 120749 South Korea 

出 版 物：《IEEE TRANSACTIONS ON COMMUNICATIONS》 (IEEE Trans Commun)

年 卷 期：2012年第60卷第10期

页      面：2886-2892页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 08[工学] 

基　　金：Samsung Thales 

主　　题：MIMO system cooperative system source precoder relay precoder iterative structure optimal precoder 

摘      要：This paper deals with the global optimality of the channel capacity of the multiple-input multiple-output (MIMO) cooperative system which is equipped with precoders at source and relay, and exploits the direct channel between source and destination. Each precoder of the system is individually designed by the Lagrangian method and the final precoders are decided by an iterative structure. To prove the global optimality for the channel capacity of the system with these joint precoders, we show that the channel capacity function of the system is a concave function and the constraints of the system are convex sets.