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

被引：1
作者：
机构：
[1] School of Telecommunication Engineering, Beijing University of Posts and Telecommunications
来源：
Yao, L.-P. (yaoliping@bupt.edu.cn) | 1600年 / Beijing University of Posts and Telecommunications卷 / 20期
基金：
中国国家自然科学基金;
关键词：
IUI; power allocation; user pairing; VMIMO;
D O I：
10.1016/S1005-8885(13)60045-X
中图分类号：
学科分类号：
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. © 2013 The Journal of China Universities of Posts and Telecommunications.
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收藏
页码：32 / 36
页数：4
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