Design of Network Construction Scheme of Terrestrial Digital Television Broadcasting System Based on Single Frequency Network
With the development of science and technology,terrestrial digital TV broadcasting has gradually replaced analog TV and become the mainstream form of TV broadcasting.In order to realize the effective coverage of terrestrial digital TV signal,it is very important to choose the appropriate transmission network.This paper studies the feasibility of constructing terrestrial digital television broadcasting system based on single frequency network technology.This paper first introduces the basic principle and technical characteristics of single frequency network,and analyzes its advantages compared with traditional cable television network.Then the composition and technical index of terrestrial digital television broadcasting system are summarized.On the basis of this,the network architecture,parameter design,equipment selection and layout and key points of project implementation of the terrestrial digital television broadcasting system based on single frequency network are discussed.The research shows that compared with the traditional coaxial cable network,the single frequency network technology can simplify the network struc-ture,reduce the difficulty of construction,improve the efficiency of operation and maintenance,and meet the needs of terrestrial digital TV signal transmission.Finally,the research work is summarized and the next development direction is prospected.This paper provides a more com-plete solution for the construction of terrestrial digital television broadcasting based on single frequency network,which has certain reference value and practical significance.
single frequency networkTerrestrial digital televisionSystem network construc-tionScheme desig
NETL
NSTL
万方数据
