Distributed Power Control for OFDMA based Spatial Multiplezing Multi-hop Systems

摘要：

In this paper, a distributed power control algorithm is proposed to perform adaptive spatial multiplexing for the relay enhanced orthogonal frequency division multiple access (OFDMA) cellular systems. As the optimal spatial multiplexing problem is non-convex, we utilize the distributed iteration method to achieve its near-optimal solution. By determining the restriction on the transmit power for each subcarrier, the individual power allocation at the base station (BS) and the relay station (RS) can always converge to some desirable Nash Equilibriums with satisfying performance. Simulation results show that the proposed distributed power control algorithm provides significant gain in system transmit rate over the traditional iterative water- filling scheme.

作者: Bin Fan Wenbo Wang Yicheng Lin Kan Zheng

作者单位: Wireless Signal Processing and Network Lab Key Laboratory of Universal Wireless Communication, Ministry of Education Beijing University of Posts & Telecommunications, Beijing, China

会议类型: 国际会议

会议名称: 2009 3rd IEEE International Symposium on Microwave,Antenna,Progagation and EMC Technologies for Wireless Communications(第三届微波、天线、电波传播和EMC技术国际会议

会议地点: 北京

会议语种:英文

页码: 527-532

在线出版日期: 2009-10-27（万方平台首次上网日期，不代表论文的发表时间）