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
收藏
页码：303 / 322
页数：20
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