发射机信道知识缺陷对MIMO系统容量的影响

A. Medles, S. Visuri, D. Slock
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引用次数: 1

摘要

对于具有完美的MIMO信道知识的发射机,最大可实现容量对应于充水解决方案。在实践中,由于信道的时间选择性和接收端反馈的延迟或缺失,可用的知识可能只是部分的。然而,与没有任何渠道知识的容量相比,利用部分知识可以显著提高容量。本文分析了在实际频率平坦信道模型下,不同信道类型的部分知识对MIMO容量的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the effect of channel knowledge imperfections at the transmitter on the capacity of MIMO systems
For a transmitter that has a perfect knowledge of the MIMO channel, the maximum achievable capacity corresponds to the water-filling solution. In practice, the available knowledge may only be partial due to the time selectivity of the channel, and delay or absence of the feedback from the receiver. However, exploiting the partial knowledge leads to a significant improvement when compared to the capacity without any channel knowledge. In this paper we analyze the MIMO capacity with various types of partial knowledge of the channel under practical frequency flat channel models.
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