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在某些非导行的激光通信系统中，当极窄的信号光脉冲通过散射介质到达接收机时，脉冲将在时间上扩展。对于脉位调制（ＰＰＭ），这种扩展可能会引起时隙间串扰。研究了存在时隙间串扰时基于光电子计数数据的最大似然解调及其性能；给出了解调错误概率的估计公式；针对形如ｔｅ￣（（－ｔ／ｔ）ｍ）（ｔｍ是波形参数）的接收光脉冲，考察了计数区间长度的选取与解调性能的关系；详细研究了扩展时隙积分解调，导出了性能估计公式及一些数值结果。
In some non-guided laser communication systems, the pulse will expand in time when a very narrow signal light pulse arrives at the receiver through the scattering medium. For pulse-width modulation (PPM), this spreading may cause inter-slot crosstalk. The maximum likelihood demodulation based on photoelectron count data with crosstalk in time slot and its performance are studied. The estimation formula of demodulation error probability is given. For the case of te¯ ((t / t) m) (tm is the waveform Parameters) of the received optical pulse, investigated the length of the counting interval and the demodulation performance of the relationship; extended time-slot integral demodulation, derive the performance of the estimated formula and some numerical results.