具有正暗电流的离散时间泊松信道非渐近容量上界
信息论
2020-11-03 v2 math.IT
摘要
我们推导了在平均功率约束与任意常数暗电流项下离散时间泊松信道容量的改进且易计算的上界。这是通过将一般凸对偶框架与作者先前工作(Cheraghchi, J. ACM 2019; Cheraghchi, Ribeiro, IEEE Trans. Inf. Theory 2019)中考虑的digamma分布的修正版本相结合实现的。对大多数参数选择,即便对输入施加额外的峰值功率约束,我们的上界也优于先前结果。
引用
@article{arxiv.2010.14858,
title = {Non-Asymptotic Capacity Upper Bounds for the Discrete-Time Poisson Channel with Positive Dark Current},
author = {Mahdi Cheraghchi and João Ribeiro},
journal= {arXiv preprint arXiv:2010.14858},
year = {2020}
}
备注
12 pages, 2 figures. Minor revisions in the introduction