单路视频与多路数据复用传输系统的研究  

Multiplexing Transmission System of Single-channel Video Signal and Multi-channel Data

作　　者：刘绒侠[1] 王恒运[2] 

机构地区：[1]西安工业大学数理系,西安710032 [2]西安应用光学研究所,西安710065

出　　处：《西安工业大学学报》2008年第1期90-93,共4页Journal of Xi’an Technological University

摘　　要：介绍了一种实现单路视频与多路数据传输的复用/解复用处理的方法,给出了设计系统的发射部分和接收部分的组成框图,以及调制电路的实现原理及部分参数的设置,采用了数据(四路)的频分复用以及信号的二次调制处理技术,视频信号输出滤波器和数据信号解调滤波器的设计都采用了切比雪夫的LC滤波器,实现了单路视频信号与多路数据信号传输的混合复用,有效地降低了数模信号之间的相互干扰,提高了信号传输的信噪比,能够实现视频信号和数据信号的复用传输,具有一定的应用价值.Multiplexing/demultiplexing transmission of single-channel video signal and multi-channel data is introduced. A block diagram of the transmission part and the receive part of the system, and the principles of the modulation circuit and the design method of some parameters are presented. Data frequency division multiplexing and the second modulation techniques are adopted. The Chebshev LC filter is used to design video output filter and data demodulation filter. Mixing transmission of video signal and multi-data signal is achieved and the mutual interference between the video signal and data signals is reduced. The SNR of the signal transmission is increased. The results prove that multiplexing transmission of data and video signals are practicable.

关 键 词：数据信号 视频信号 复用/解复用 调制电路 

分 类 号：TN943.6[电子电信—信号与信息处理]