Computer Science – Information Theory
Scientific paper
2012-04-19
Computer Science
Information Theory
4 pages, 5 figures
Scientific paper
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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Freddy Mayer
As the author correctly points out, the correlation structure in the interference has been largely ignored but can have a drastic effect on the performance of multi-antenna communication. In my lab we are currently trying to experimentally characterize this impact. I strongly believe that this is an important line of research, and it is surprising to me that such a nice closed-form result can be obtained.
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