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On the Capacity of the Discrete-Time Poisson Channel

机译:离散时间泊松​​信道的容量

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摘要

The large-inputs asymptotic capacity of a peak-power and average-power limited discrete-time Poisson channel is derived using a new firm (nonasymptotic) lower bound and an asymptotic upper bound. The upper bound is based on the dual expression for channel capacity and the notion of capacity-achieving input distributions that escape to infinity. The lower bound is based on a lower bound on the entropy of a conditionally Poisson random variable in terms of the differential entropy of its conditional mean.
机译:使用新的公司(非渐近)下界和渐近上限来推导峰值功率和平均功率有限离散时间泊松​​信道的大输入渐近容量。上限基于信道容量的对偶表达式和逃逸到无穷大的可实现容量的输入分布的概念。下限基于条件泊松随机变量的熵的下限,条件是其条件均值的微分熵。

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