Lower bounds on the capacity of discrete-time Poisson channels with dark current
Lower bounds on the capacity of discrete-time Poisson channels with dark current
复制标题
暗电流离散时间泊松通道容量的下界
DOI：
10.1109/bsc.2010.5472956
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Jun Chen
中科院分区：
文献类型：
--
作者：
Jihai Cao;S. Hranilovic;Jun Chen
目前，还没有已知的离散时间泊松信道容量的闭合形式。本文利用伽马输入分布族得到了具有暗电流和平均功率约束的离散时间泊松信道容量的改进下界。这项工作中使用的方法的直觉来自于马丁内斯，新的下界比以前的下界更紧，特别是在低发射功率水平下。
Currently, no closed form for the capacity of discrete-time Poisson channels is known. In this paper, improved lower bounds on the capacity of discrete-time Poisson channels with dark current and average power constraint are obtained by using the family of gamma input distributions. The intuition of the method used in this work comes from Martinez and the new bounds are tighter than the previous lower bounds, especially at low transmit power levels.