Effect of controllable parameter synchronization on the ensemble average bit error rate of space-to-ground downlink chaos laser communication system

Abstract

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.

Research on the performance of PAM4 space chaotic downlink laser communication system under atmospheric turbulence

“…GEDFA1 is the gain of EDFA1. Therefore, the laser power entering the space channel can be expressed as [21]…”

“…In 2008, using synchronized semiconductor lasers working in the chaotic regime, compatible with free-space optics technology for line-of-sight communication links, Annovazzi et al numerically demonstrate secure data transmission [13]. From 2018, Mi Li et al studied the influence of chaotic mismatch caused by hardware parameters [14], atmospheric turbulence [15], space radiation [16], amplifier spontaneous noise (ASE) of erbium-doped fiber amplifier (EDFA) [17] , lateral alignment error [18] on OOK chaotic space optical communication system performance. To apply chaotic laser technology to wavelength division multiplexing, doppler frequency shift effect on 4-channl space chaotic communication is studied in 2023 [19].…”

Control and synchronization of chaotic spur gear system using adaptive non-singular fast terminal sliding mode controller

“…When the chaotic systems were introduced in engineering and physics, the elimination of the chaos behavior has received special attention from researchers (Khari et al, 2016). The chaos phenomenon can be found in many different areas such as robotic (Barhaghtalab et al, 2019), communication systems (Li et al, 2018), power converters (Huang et al, 2019), energy systems, and so on. For this purpose, different control methods have been developed to eliminate the chaos phenomena.…”

Enhancing Ikeda Time Delay System by Breaking the Symmetry of Sine Nonlinearity

“…ese meaningful properties make chaotic systems widely studied and applied in many disciplines [4][5][6][7][8][9][10]. Specially, with the rapid development of information society chaos, secure communication has already been established to be a good candidate for transmission of con dential message [11][12][13].…”