On the Capacity of the Discrete-Time Poisson Channel

被引：113

作者：

Lapidoth, Amos ^{[1
]}

Moser, Stefan M. ^{[2
]}

机构：

[1] ETH, Dept Informat Technol & Elect Engn, Swiss Fed Inst Technol, CH-8092 Zurich, Switzerland

[2] Natl Chiao Tung Univ, Dept Commun Engn, Hsinchu 30010, Taiwan

来源：

IEEE TRANSACTIONS ON INFORMATION THEORY | 2009年 / 55卷 / 01期

关键词：

Channel capacity; direct detection; high signal-to-noise ratio (SNR); optical communication; photon; pulse amplitude modulation; Poisson channel; FADING CHANNELS; BOUNDS;

D O I：

10.1109/TIT.2008.2008121

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

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.

引用

页码：303 / 322

页数：20

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