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首页> 外文会议>37th annual conference on information sciences and systems (CISS 2003) >Performance Analysis of MIMO Systems in Presence of Co-channel Interferenceand Additive Gaussian Noise
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Performance Analysis of MIMO Systems in Presence of Co-channel Interferenceand Additive Gaussian Noise

机译：存在同信道干扰 r n和加性高斯噪声的MIMO系统性能分析

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摘要

This paper presents some analytical results on the capacity ofrnmultiple-input-multiple-output (MIMO) fading channels and in thernpresence of co-channel interference with arbitrary average powersrnand additive noise. We consider the case when the desired userrnand co-channel interferers are all subject to Rayleigh type of fadingrnand derive (i) the exact moment generating function of the isolatedrnlink capacity when the transmitter has no channel state informationrn(CSI) and (ii) the exact outage probability, or the cumulative distributionrnfunction (CDF) of the output signal-to-interference-plus-noisernratio (SINR), and outage capacity when the system employs optimumrncombining (i.e., beamforming). We then derive from (i) the capacityrnmean, variance and the Gaussian-approximated outage capacity.rnThese results show that (i) even a few of not-so-strong co-channel interferersrnwill signiu0002cantly degrade the system performance predictedrnwithout considering the co-channel interferers and (ii) the optimumrncombining scheme outperforms the equal power allocation schemernin terms of the channel capacity when the transmitting SNR is lowrnbut the equal power allocation scheme eventually becomes the betterrnwhen the SNR increases.
机译：本文针对多输入多输出（MIMO）衰落信道的容量以及存在具有任意平均功率和加性噪声的同信道干扰提供了一些分析结果。我们考虑当期望的用户和同信道干扰源都经受瑞利类型衰落的情况，并推导（i）当发射机没有信道状态信息（CSI）时，隔离链路容量的精确矩生成函数，以及（ii）当系统采用最佳组合（即波束成形）时，中断概率或输出信号与干扰加噪声的累积分布函数（CDF）和中断容量。然后，我们从（i）容量均值，方差和高斯近似中断容量中得出。这些结果表明（i）即使是少数几个不太强的同频道干扰源也将显着降低预测的系统性能，而无需考虑同频道干扰和（ii）最佳组合方案在发射SNR较低时在信道容量方面优于同等功率分配方案，但当SNR增大时，等功率分配方案最终变得更好。

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