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多基站协作系统中基于机会SDMA的用户调度算法

DOI: 10.3969/j.issn.1006-7043.201311104

Keywords: MIMO系统, 调度算法, 波束成形, 信道信息, 反馈, 多用户系统

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Abstract:

为解决多基站协作系统调度用户时需要较大的信息反馈,提出了一种基于机会SDMA的用户调度算法.算法中每个基站采用正交随机向量作为波束成形向量,参与协作的各基站间通过高速链路共享波束成形信息.在接收端计算每个用户的SINR,发送端选择SINR最大的用户作为调度用户.采用该算法进行用户选择时,不需要考虑干扰小区的用户选择结果,很好的解决了多基站协作调度的困难,每个用户只需要反馈少量信息,极大地降低了反馈量,并获得了系统容量的增益.

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