Throughput Optimization for Orthogonal Random Beamforming in Multi-user MIMO-TDMA Downlink

摘要：

We address the problem of throughput optimization in MIMO-TDMA downlink using orthogonal random beamforming (ORBF), which has been intensively studied recently because of its ability to exploit multi-user diversity and spatial multiplexing gains with partial channel state information (CSI). We formulate an optimization problem which aims at maximizing the total throughput under the constraint of individual long term throughput guarantee for each user. Although this problem is generally non-convex, we find that the optimal solution can be found with high probability by combine convex optimization algorithms with a well designed initial algorithm. By comparing the solution of the proposed method with the optimal value of the dual problem, we showed that the optimal throughput is usually achieved by the proposed method.

关键词： Scheduling throughput optimization Multi-user

作者: Liu An Jun Shen Luo Wu Haige Xiang

作者单位: School of EECS,Peking University,Beijing,P.R.China,100871

会议类型: 国际会议

会议名称: The IET 2nd International Conference on Wireless,Mobile & Multimedia Networks(第二届IET国际无线移动多媒体网络会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）