【摘要】 运用通信系统传输理论 ,对光通信接收机信道误码原因进行分析 ,认为随机噪声是产生信道接收误码的主要原因。通过理论分析和实验观测到的波形 ,确定了解决问题的方法是采用阻抗型前端电路和具有升余弦特性的均衡滤波器 ,并正确选择计算其参数更多还原

【Abstract】 Using the transmission theory of communication,the reason for BER of signal channel in optical terminal receiver is analyzed.The result shows that random noise is main factor of receiving BER.Through theoretical analysis and actual waveshape in the test,the problem is handled with using impedance fore circuit and equalization filter with the characteristics of rising cosine law,correctly selecting its parameters.更多还原