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On the capacity of MIMO Rice channels

机译:关于MIMO Rice信道的容量

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摘要

The asymptotic -in the number of antennas- theoretic capacity of a MIMO (Multiple Input Multiple Output) system is derived when considering Rice distribution entries. Assuming perfect knowledge of the channel at the receiver, analytical expressions of the capacity are derived in the case of perfect and partial (based on the mean and limiting eigenvalue distribution of the mean) knowledge at the transmitter. Remarkably, the capacity depends only on a few meaningful parameters, namely, the limiting eigenvalue distribution of the mean matrix, the signal to noise ratio (SNR), the Ricean factor, and the system load. These results show in particular that, for a given SNR and in contrast to the SISO (Single Input Single Output) case, the MIMO Rice channel does not always outperform the MIMO Rayleigh channel in terms of capacity. Moreover, the results are also useful to quantify the effect of feedback on general MIMO systems.
机译:当考虑莱斯分配项时,得出MIMO(多输入多输出)系统的渐进式(在天线数中)理论容量。假设在接收机处对信道具有完备的知识,则在发射机处具有完全和局部的知识(基于均值和均值的极限特征值分布)的情况下,可以得出容量的分析表达式。值得注意的是,容量仅取决于几个有意义的参数,即均值矩阵的极限特征值分布,信噪比(SNR),Ricean因子和系统负载。这些结果特别表明,对于给定的SNR,并且与SISO(单输入单输出)情况相比,MIMO Rice信道在容量方面并不总是优于MIMO Rayleigh信道。此外,结果对于量化反馈对通用MIMO系统的影响也很有用。

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