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Characteristics of pulse position modulation with quiescent times constraint

Ultra long distance deep space optical communication requires large laser transmitting power. Pulse fiber laser has the advantage of high peak power, and is an ideal laser emitter. The pulse position modulation (PPM) and differential pulse position modulation (DPPM) with quiescent times constraint model was designed, and the influence of quiescent time on symbol length, frame length, signal transmission rate, bandwidth demand and transmit power is analyzed. The narrow line-width, high repetition rate, high power pulse fiber laser was proved to be an ideal laser emitter. The research results have great significance for deep space optical communication.