摘要
用Matlab的仿真工具Simulink对数字电视光纤同轴电缆网络调制方式QAM进行仿真,验证QAM调制解调方式在数字电视光纤同轴电缆网络传输中应用的可行性,以及通过对现有技术的分析并结合当前网络现状,研究如何将基于以太网的无源光技术应用到数字电视双向网络改造中,以最小的代价来实现数字电视网络双向改造,同时对在改造过程中遇到的问题提出解决办法。
In this paper,the simulation tool simulink of matlab was used to simulate the QAM modulation mode of digital TV HFC network in order to verify the feasibility of the application of the QAM modulation mode in digital TV HFC network.The application of the passive optical technology of Ethernet in the reconstruction and transformation of the two-way digital televison network was studies by analyzing the existing technology and the present network status so that the two-way digital television network could be reconstucted and transformed at a minimal cost.Meanwhile,the solutions to the problems in the reconstruction and transformation of the two-way digital television network were provided.
出处
《实验室研究与探索》
CAS
北大核心
2012年第6期62-64,共3页
Research and Exploration In Laboratory
关键词
数字电视
HFC网络
仿真
调制解调
双向改造
digital television
HFC network
simulation
modulation and demodulation
two-way reconstruction and transformation
