Joint user pairing and power allocation in uplink virtual MIMO with imperfect CSI

作     者：YAO Li-ping XU Quan-sheng LI Xi JI Hong 

作者机构：School of Telecommunication Engineering Beijing University of Posts and Telecommunications 

出 版 物：《The Journal of China Universities of Posts and Telecommunications》 (中国邮电高校学报（英文版）)

年 卷 期：2013年第20卷第3期

页      面：32-36页

核心收录：

学科分类：0810[工学-信息与通信工程] 08[工学] 081001[工学-通信与信息系统] 

基　　金：supported by the National Natural Science Foundation of China (61271182) the National Natural Science Funds of China for Young Scholar (61001115) the National Science and Technology Major Project (2011ZX03001-007-03) 

主　　题：VMIMO user pairing power allocation I151 

摘      要：User pairing strategy for virtual multi-input multi-output （VMIMO） has been widely studied to improve system throughput, but most studies are based on perfect channel state information （CSI） and uniform power allocation. However, perfect CSI is very difficult or even impossible to obtain in practical system. Moreover power allocation has significant impact on algorithm performance. Therefore, in this paper, a low-complex joint user pairing and power allocation algorithm based on aggressive discrete stochastic optimization and Lagrangian dual solution is proposed for uplink VMIMO with imperfect CSI. Simulation results show that the proposed algorithm can achieve desirable throughput performance, and restrict inter-user interference （IUI） efficiently.