基于SDH网络的数字电视平台架构分析

Architecture Analysis of Digital TV Platform Based on SDH Network

有线电视的数字化发展,推动了有线电视数字节目的扩容,加之各种互动电视和高清节目的开播,对于电视信号传输的稳定性与安全性要求越来越高。虽然有线电视的信号处理系统已经实现数字化改造,但传输系统仍以射频调制的方式为主,已经无法适应数字化发展中信号传输的稳定性与安全性需求。本文主要基于当前数字电视平台及数字通信传输技术,对数字电视信号的传输原理,并具体探讨了基于SDH网络的数字电视平台架构,对比了不同信号传输的组网方式。

The digital development of cable television has promoted the expansion of digital cable television programs.In addition,the opening of various interactive television and high-definition programs has become increasingly demanding for the stability and security of television signal transmission.Although the signal processing system for cable television has been digitally remodeled,the transmission system is still mainly based on radio frequency modulation and has been unable to meet the stability and security requirements of signal transmission in the digital development.This paper mainly based on the current digital television platform and digital communication transmission technology,the digital television signal transmission principle,and specifically discusses the digital television platform architecture based on SDH network,contrasting the different signal transmission networking.