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arXiv 1204.4498cs.ITcs.NImath.ITmath.PR
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干扰相关导致的分集损失

Diversity Loss due to Interference Correlation

Martin Haenggi

摘要:

无线系统中的干扰在时间上和空间上都是相关的。然而,很少有研究分析这种相关性的影响。在这里,我们专注于它的影响,在泊松网络的多样性与多天线接收机。大多数关于多天线通信的工作不考虑干扰,并且如果包括干扰,则假设其在接收天线上是独立的。在这里,我们表明,干扰相关性显着降低了成功接收SIMO链路的概率。通过分集多项式量化分集损失。对于两个天线的情况下,我们提供了完整的联合SIR分布。

英文摘要:

Interference in wireless systems is both temporally and spatially correlated. Yet very little research has analyzed the effect of such correlation. Here we focus on its impact on the diversity in Poisson networks with multi-antenna receivers. Most work on multi-antenna communication does not consider interference, and if it is included, it is assumed independent across the receive antennas. Here we show that interference correlation significantly reduces the probability of successful reception over SIMO links. The diversity loss is quantified via the diversity polynomial. For the two-antenna case, we provide the complete joint SIR distribution.

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