On the Mutual Information Distribution of OFDM-Based Spatial Multiplexing: Exact Variance and Outage Approximation

McKay M. R.; Smith P. J.; Suraweera H. A.; Collings I. B.

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On the Mutual Information Distribution of OFDM-Based Spatial Multiplexing: Exact Variance and Outage Approximation

机译：基于OFDM的空间复用的互信息分布：精确方差和中断近似

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This communication considers the distribution of the mutual information of frequency-selective spatially uncorrelated Rayleigh fading multiple-input–multiple-output (MIMO) channels. Results are presented for orthogonal frequency-division multiplexing (OFDM)-based spatial multiplexing. New exact closed-form expressions are derived for the variance of the mutual information. In contrast to previous results, our new expressions apply for systems with both arbitrary numbers of antennas and arbitrary-length channels. Simplified expressions are also presented for high and low signal-to-noise ratio (SNR) regimes. The analytical variance results are used to provide accurate analytical approximations for the distribution of the mutual information, and the outage capacity.

机译：该通信考虑了频率选择空间不相关的瑞利衰落多输入多输出（MIMO）信道的互信息分布。给出了基于正交频分复用（OFDM）的空间复用的结果。对于互信息的方差，导出了新的精确封闭式表达式。与以前的结果相反，我们的新表达式适用于具有任意数量的天线和任意长度的信道的系统。还针对高和低信噪比（SNR）方案提供了简化的表达式。分析方差结果用于为相互信息的分布和中断能力提供准确的分析近似值。

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《IEEE Transactions on Information Theory》 |2008年第7期|p.3260-3278|共19页
作者
McKay M. R.; Smith P. J.; Suraweera H. A.; Collings I. B.;
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正文语种 eng
中图分类无线电电子学、电信技术;
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On the Mutual Information Distribution of OFDM-Based Spatial Multiplexing: Exact Variance and Outage Approximation

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