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在设计数字光通信系统时,必须先选定通信系统中所传输的光脉冲波形、选定输至判决器的脉冲波形及计算接收机灵敏度。本文根据S.D.Personick所提出的公式绘制出在实用上易于使用的曲线,并用这些曲线计算接收灵敏度,从而确定所需脉冲波形。判决电平也是用Personick公式计算的,虽然误差较大,但仍可作为参考。
When designing a digital optical communication system, you must first select the optical pulse waveform transmitted in the communication system, select the pulse waveform to the arbiter and calculate the receiver sensitivity. This paper plots the plots that are practical and easy to use based on the equations proposed by S. D. Personick and calculates the receive sensitivity using these curves to determine the desired pulse shape. The decision level is also calculated using Personick’s formula, although the error is larger, but can still be used as a reference.