Title: On the Capacity of the Discrete-Time Poisson Channel
Authors: Lapidoth, Amos
Moser, Stefan M.
電信工程研究所
Institute of Communications Engineering
Keywords: Channel capacity;direct detection;high signal-to-noise ratio (SNR);optical communication;photon;pulse amplitude modulation;Poisson channel
Issue Date: 1-Jan-2009
Abstract: 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.
URI: http://dx.doi.org/10.1109/TIT.2008.2008121
http://hdl.handle.net/11536/7788
ISSN: 0018-9448
DOI: 10.1109/TIT.2008.2008121
Journal: IEEE TRANSACTIONS ON INFORMATION THEORY
Volume: 55
Issue: 1
Begin Page: 303
End Page: 322
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