Open AccessEffect of controllable parameter synchronization on the ensemble average bit error rate of space-to-ground downlink chaos laser communication system
Author(s) -
Mi Li,
Yifeng Hong,
Yuejiang Song,
Xuping Zhang
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.002954
Subject(s) - free space optical communication , bit error rate , chaotic , optical communication , communications system , synchronization (alternating current) , computer science , modulation (music) , interference (communication) , chaos (operating system) , scintillation , electronic engineering , optics , control theory (sociology) , detector , physics , channel (broadcasting) , telecommunications , engineering , acoustics , artificial intelligence , control (management) , computer security
Chaotic modulation is a scheme used to enhance the information security through the configuration parameter synchronization. When chaotic modulation is adopted in the space-to-ground laser communication system, the traditional bit error rate (BER) calculation model for fiber-based chaos communication system is no longer available to depict the long-term communication performance. To solve this problem, we established a new ensemble average BER calculation model under the effects of intensity scintillation and pointing error. Based on this model, we conduct a simulation to research such a system, and our numerical results indicate that space-to-ground chaos laser communication system has a great anti-interference against these two effects when the detector mismatch approaches zero. Our results display the advantages of chaotic modulation and also reflect the characteristics of space-to-ground chaos laser communication system.