多用户MIMO系统的低复杂度调度和波束形成

2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications Pub Date : 2006-07-02 DOI:10.1109/SPAWC.2006.346488

M. Kountouris, R. de Francisco, D. Gesbert, D. Slock, T. Salzer

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引用次数: 26

摘要

研究了具有部分信道状态信息的多天线广播信道联合调度和波束形成问题。我们展示了长期统计信道知识如何有效地与用户选择和线性波束形成的瞬时低速率反馈相结合。提出了一种基于多用户干扰估计(界)的低复杂度算法。与机会技术相比，我们的方案显示出显着的吞吐量增益，接近小角度扩展的全CSIT的总和速率

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Low Complexity Scheduling and Beamforming for Multiuser MIMO Systems

The problem of joint scheduling and beamforming for a multiple antenna broadcast channel with partial channel state information at the transmitter (CSIT) is considered. We show how long-term statistical channel knowledge can be efficiently combined with instantaneous low-rate feedback for user selection and linear beamforming. A low complexity algorithm based on an estimate (bound) of the multiuser interference is proposed. Our scheme is shown to exhibit significant throughput gain over opportunistic techniques, approaching the sum rate of full CSIT for small angle spreads

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2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications

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