Title :
A lower bound for the capacity of the discrete-time Poisson channel
Author :
Martinez, Alfonso
Author_Institution :
Centrum Wiskunde & Inf., Amsterdam, Netherlands
fDate :
June 28 2009-July 3 2009
Abstract :
A simple lower bound to the capacity of the discrete-time Poisson channel with average number of quanta of energy epsivs is derived. The rate 1/2 log(1 + epsivs) is shown to be the generalized mutual information of a modified minimum-distance decoder, when the input follows a gamma distribution of parameter 1/2 and mean epsivs.
Keywords :
channel capacity; decoding; gamma distribution; stochastic processes; discrete-time Poisson channel capacity; energy quanta; gamma distribution; generalized mutual information; modified minimum-distance decoder; Additive noise; Desktop publishing; Maximum likelihood decoding; Mutual information; Nearest neighbor searches; Optical fiber communication; Optical losses; Probability density function; Random variables; Upper bound;
Conference_Titel :
Information Theory, 2009. ISIT 2009. IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-4312-3
Electronic_ISBN :
978-1-4244-4313-0
DOI :
10.1109/ISIT.2009.5205842
