利用时分复用实现多路数据与视频复合传输的光纤通信系统

Using TDM to realize multiplex transmission of the data and video signals in fiber optic communication system

为降低光纤通信系统成本,提高性能,从一个新的角度分析系统的设计要求,提出新的传输方案.在没有增加传输带宽、也没有提高系统的工作时钟的情况下,完成传输1路视频信号的同时传输8路数据信号的复合传输.系统采用专用编、解码芯片对信号行进编、解码;采用CPLD通过时分复用的方式实现了信号的复用传输,设计并调试了具体的电路,最后对视频信号和数据信号传输中的各项指标进行了严格的测试.通过实验,证明了方案的正确性和可行性.

A new transmission scheme was given for cutting costs and improving performance by analyzing the design requirement from a novel point of view. One video signal and eight data signals were transmitted complexly without increasing transmission bandwidth and raising system clock. Special encoder and decoder were adopted to encode and decode the signal in this system. A compound transmission was achieved by time division multiplexing using CPLD. The material circuit board was designed. At last, a strict examination was done on the performances of the data signal transmission and video signal transmission. The experimental results prove the correctness and feasibility of this scheme.