A Comprehensive Comparison and Analysis of Several Intensity Modulations Based on the Underwater Photon-Counting Communication System

Frontiers in Physics

Physics

Dongquan Zhang¹  Peixuan Liao¹  Chang Chang¹  Duorui Gao¹  Peng Li¹  Wei Wang¹  Xiaoping Xie²  Xiaotian Han² 

[1] State Key Laboratory of Transient Optics and Photonics, Xi’an Insitute of Optics and Precision Mechanics, Chinese Academy of Science, Xi’an, China;State Key Laboratory of Transient Optics and Photonics, Xi’an Insitute of Optics and Precision Mechanics, Chinese Academy of Science, Xi’an, China;School of Future Technology, University of Chinese Academy of Science, Beijing, China;

关键词: underwater wireless optical communication (UWOC);    intensity modulation (IM);    direct detection (DD);    digital pulse modulation;    photon counting;    channel model;   

DOI  :  10.3389/fphy.2021.815343

 received in 2021-11-15, accepted in 2021-12-14,  发布年份 2022

来源: Frontiers

【 摘 要 】

Underwater wireless optical communication is facing absorption, scattering problems, which, in principle, can be greatly resolved by underwater photon-counting communication (UPCC) technology that exhibits high-sensitivity communication characteristics in long-range underwater wireless optical communication. Recent studies on UPCC are mainly focused on a single intensity modulation such as on–off keying (OOK) and pulse position modulation (PPM) technologies, and the comprehensive analysis of communication performance combing OOK modulation and digital pulse modulations remains a lack. To this, by using a UPCC system based on a single-photon avalanche diode, we reveal the communication performances of OOK, PPM, differential pulse interval modulation (DPIM), differential pulse position modulation (DPPM), and dual-header pulse interval modulation, and find that (1) the PPM has the longest transmission distance at the same bit error ratio when M > 2, but the lowest communication rate under identical modulation bandwidth and average transmit power; and (2) the DPPM and DPIM perform the optimum communication performance at the fixed communication rate when M = 8. We thus conclude that the DPPM and DPIM have advantages of low modulation bandwidth and long time slot time compared with PPM, indicating the significance of reducing the difficulty of signal synchronization and the complexity of the underwater photon-counting system accordingly.

【 授权许可】

Unknown   
Copyright © 2022 Han, Li, Chang, Gao, Zhang, Liao, Wang and Xie.