A novel signal detection method for photon-counting communications with nonlinear distortion effects

被引：0

作者：

Wang, Chen ^{[1
]}

Xu, Zhiyong ^{[1
]}

Wang, Jingyuan ^{[1
]}

Li, Jianhua ^{[1
]}

Mou, Weifeng ^{[2
]}

Zhu, Huatao ^{[2
]}

Zhao, Jiyong ^{[1
]}

Su, Yang ^{[1
]}

Wang, Yimin ^{[1
]}

Qi, Ailin ^{[1
]}

机构：

[1] Army Engn Univ PLA, Coll Commun Engn, Nanjing 210007, Peoples R China

[2] Natl Univ Def Technol, Coll Informat & Commun, Wuhan 430010, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2025年 / 574卷

基金：

中国国家自然科学基金;

关键词：

Photon-counting communication; Photon-counting receiver; Dead time; Signal detection;

D O I：

10.1016/j.optcom.2024.131237

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper proposes a method for estimating and detecting optical signals in practical photon-counting receivers. There are two important aspects of non-perfect photon-counting receivers, namely, (i) dead time which results in blocking loss, and (ii) non-photon-number-resolving, which leads to counting loss during the gate-ON interval. These factors introduce nonlinear distortion to the detected photon counts. The detected photon counts depend not only on the optical intensity but also on the signal waveform, and obey a Poisson binomial process. Using the discrete Fourier transform characteristic function (DFT-CF) method, we derive the probability mass function (PMF) of the detected photon counts. Furthermore, unlike conventional methods that assume an ideal rectangle wave, we propose a novel signal estimation and decision method applicable to arbitrary waveform. We demonstrate that the proposed method achieves superior error performance compared to conventional methods. The proposed algorithm has the potential to become an essential signal processing tool for photon-counting receivers.

引用

页数：5