摘要
在基于占空比复用技术(DCDM)的基础上,提出了采用双极性归零(RZ)信号来实现占空比复用技术,即双极性-占空比复用技术(APDCDM)。分析了其复用与解复用的原理,利用Matlab设计了APDCDM系统的解复用器。通过OptiSystem与Matlab的联合仿真,设计了3个用户复用的APDCDM光纤传输系统,验证了APDCDM用于光纤通信系统的可行性,并通过信号能量的分析,说明APDCDM较DCDM能承载更多的用户。
On the basis of DCDM a multiplex technology which uses the bipolar RZ signal to realize duty cycle division multiplexing is proposed, it is called as absolute polar duty cycle division multiplexing （APDCDM）. The multiplexing and demultiplexing principles of APDCDM are analyzed. An APDCDM demultiplexer is designed using Matlab. Through the simulation using OptiSystem and Matlab an optical fiber transmission system based on APDCDM which is used by three users is designed, so the feasibility of applying APDCDM in optical communication system is verified. By the analysis of signal energy, the fact that APDCDM can carry more users than DCDM is shown.
出处
《光纤与电缆及其应用技术》
2014年第6期22-25,共4页
Optical Fiber & Electric Cable and Their Applications
关键词
光纤传输系统
双极性信号
占空比复用
解复用器
fiber optic transmission system
bipolar signal
absolute polar duty cycle division multiplexing（APDCDM）
demultiplexer
