Diversity-Multiplexing Tradeoff in Rank-Deficient and Spatially Correlated MIMO Channels
Diversity-Multiplexing Tradeoff in Rank-Deficient and Spatially Correlated MIMO Channels
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秩缺陷和空间相关 MIMO 信道中的分集复用权衡
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
Y. H. Lee
中科院分区：
文献类型：
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作者：
Woohyuk Chang;Sae;Y. H. Lee
在本文中，我们首先概括了最近的工作，郑和Tse分集复用权衡（DMT）的一些秩不足的信道（散射差）。我们发现，秩亏降低DMT曲线从i.i.d.。瑞利衰落信道我们展示了一个有趣的观察，表明分数分集增益可能是可能的整数复用增益。随着散射变得丰富，DMT接近i.i.d.的DMT。瑞利衰落信道接下来，我们专注于空间相关的多输入多输出（MIMO）信道。我们表明，空间相关性不会改变DMT，但仍然会降低中断性能，并在高信噪比下分析了这种退化
In this paper, we first generalize a recent work of Zheng and Tse on diversity-multiplexing tradeoff (DMT) for some rank-deficient channels (poor scattering). We show that rank deficiency lowers DMT curves from that of i.i.d. Rayleigh fading channels. We show an interesting observation that suggests a fractional diversity gain may be possible at integer multiplexing gains. As the scattering becomes rich, the DMT approaches that of the i.i.d. Rayleigh fading channels. We next focus on spatially correlated multiple-input multiple-output (MIMO) channels. We show that spatial correlation does not change the DMT but still degrades the outage performance and analyze such a degradation at high SNR