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FD-PFM光纤载波传输系统中信噪比理论推导
引用本文:张理招,张宝源. FD-PFM光纤载波传输系统中信噪比理论推导[J]. 解放军理工大学学报(自然科学版), 1992, 0(2)
作者姓名:张理招  张宝源
摘    要:本文讨论了利用光纤传输大通路载波信号的调制方式。经研究在接收端的解调以前采用SWFM方式,然后再将SWFM信号经倍频变换成PFM信号的调制方式较为有利。并着重讨论了倍频—脉冲频率调制的信噪比公式,得出有3dB解调增益的结论。

关 键 词:脉冲频率调制  信噪比  噪声脉冲  相关函数

Signal-to-Noise Ratio Formula Used in Optical Fiber Transmission Carrier Channel Systememploying FD-PFM
Zhang Lizhao Zhang Baoyuan. Signal-to-Noise Ratio Formula Used in Optical Fiber Transmission Carrier Channel Systememploying FD-PFM[J]. Journal of PLA University of Science and Technology(Natural Science Edition), 1992, 0(2)
Authors:Zhang Lizhao Zhang Baoyuan
Affiliation:Zhang Lizhao Zhang Baoyuan
Abstract:In this paper, a modulation method for carrier channel with large capacity in optical fibre transmission is discussed. It is more desirable that sguare-wave-Freguency-Modulation (SWFM) method be used first, and afterwards, SWFM signal be converted by a frequency doubler into a Pulse-Frequency-Modulation signal before if is demodulated at the receiving end. The formula of signal-to-noise ratio in Frequency-Doubling-Pulse-Frequency-Modulation method is discussed in detail and a conclusion of 3dB demodulafion gain is reached.
Keywords:pluse-frequence-modulalon (PFM)  signal-to-noise ratio (SNR)  noise-pluse  related function
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