On the Capacity of Block Fading Optical Wireless Channels

Longguang Li, S. M. Moser, Ligong Wang, M. Wigger
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引用次数: 3

Abstract

This paper investigates the capacity of block fading optical intensity channels with more transmit than receive antennas under different assumptions on the transmitter’s channel state information (CSI). Lower and upper bounds on the capacities are derived using the entropy power inequality (EPI) and a dual expression for capacity. Our lower bounds for perfect and partial CSI utilize a transmit-antenna cooperation strategy based on minimum-energy signaling, which we proposed recently. For perfect CSI, this lower bound matches the upper bound asymptotically in the high signal-to-noise ratio (SNR) regime. For imperfect CSI, our lower bound is close to its perfect-CSI counterpart.
块衰落无线光信道容量研究
本文研究了在对发射机信道状态信息(CSI)的不同假设下,发射天线多于接收天线的块衰落光强信道的容量。利用熵功率不等式(EPI)和容量的对偶表达式,导出了容量的下界和上界。我们的完美和部分CSI的下界使用了基于最小能量信号的发射天线合作策略,这是我们最近提出的。对于完美的CSI,在高信噪比(SNR)条件下,该下界与上界渐近匹配。对于不完美CSI,我们的下界接近完美CSI对应的下界。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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