数字电视地面广播单频网适配器原理与实现  

Principle and Implementation of DTMB Single Frequency Network Adapter

作　　者：李庆 郑战 Li Qing;Zheng Zhan(Hangzhou XNewTech Co.,Ltd.,Hangzhou Zhejiang 310012,China;Zhejiang fantastic Network Information Technology Co.,Ltd.,Hangzhou Zhejiang 310012,China)

机构地区：[1]杭州新纽科技有限公司,浙江杭州310012 [2]浙江纷视网络信息技术有限公司,浙江杭州310012

出　　处：《信息与电脑》2018年第15期180-182,共3页Information & Computer

摘　　要：近年来,随着中央广播电视节目无线数字化覆盖工程在全国范围的落地和深入推进,各省市纷纷搭建起数字电视地面无线覆盖系统。在这些系统中,地面单频网方案因其高效的频谱利用率和建设成本优势得到越来越多的关注和应用。笔者介绍了数字电视地面广播系统单频网的特点及组建方式,分析了单频网同步原理。着重依据数字电视地面广播标准,对方案中关键设备单频网适配器的SIP包结构和作用予以说明,同时,结合市场上同类产品给出了系统实现的构架。In recent years,with the implementation and in-depth promotion of the wireless digital coverage project of the central radio and television program across the country,various provinces and cities have set up wireless coverage systems for digital TV on the ground.In these systems,more and more attention has been paid to and application of the ground single-frequency network scheme due to its high efficiency of spectrum utilization and construction cost advantage.The author introduces the characteristics and construction of single-frequency network of digital TV terrestrial broadcasting system,and analyzes the synchronization principle of single-frequency network.Emphatically on the basis of digital television terrestrial broadcasting standard,the key equipment in the scheme of SFN adapter shall indicate the SIP package structure and function of the system implementation are given with similar products on the market at the same time frame.

关 键 词：单频网 SIP DTMB 

分 类 号：TN949.197[电子电信—信号与信息处理]