Achievability of the Rate ${1/2}\log(1+\es)$ in the Discrete-Time Poisson Channel
نویسنده
چکیده
A simple lower bound to the capacity of the discrete-time Poisson channel with average energy εs is derived. The rate 12 log(1+εs) 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 εs.
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عنوان ژورنال:
- CoRR
دوره abs/0809.3370 شماره
صفحات -
تاریخ انتشار 2008