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