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arXiv cs/0511029cs.ITmath.IT
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非相干瑞利衰落MIMO信道的容量最大值

Non-coherent Rayleigh fading MIMO channels: Capacity Supremum

Rasika R Perera, Tony S Pollock, Thushara D Abhayapala

摘要:

研究了在快瑞利衰落MIMO信道中,除了衰落统计信息外,发送端和接收端都不知道信道状态信息(CSI)的情况下,信息传输的极限。我们开发了一个标量信道模型,由于在非相干瑞利衰落的相位信息的情况下,并推导出容量上确界与接收天线的数量在任何信号噪声比(SNR)使用拉格朗日优化。此外,我们概念化的最佳输入分布的离散性质,提出的优化$N$离散输入的信道互信息。此外,我们推导出的渐近容量的表达式时,输入功率是大的,并与现有的容量结果时,接收机配备了大量的天线。

英文摘要:

This paper investigates the limits of information transfer over a fast Rayleigh fading MIMO channel, where neither the transmitter nor the receiver has the knowledge of the channel state information (CSI) except the fading statistics. We develop a scalar channel model due to absence of the phase information in non-coherent Rayleigh fading and derive a capacity supremum with the number of receive antennas at any signal to noise ratio (SNR) using Lagrange optimisation. Also, we conceptualise the discrete nature of the optimal input distribution by posing the optimisation on the channel mutual information for $N$ discrete inputs. Furthermore, we derive an expression for the asymptotic capacity when the input power is large, and compare with the existing capacity results when the receiver is equipped with a large number of antennas.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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