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Technologies and Services of Digital Broadcasting (12): Terrestrial Digital Television Broadcasting

机译:数字广播技术和服务(12):地面数字电视广播

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摘要

There are currently three terrestrial digital television systems in the world. These are, in the order of their development, Digital Television (DTV) in the United States, Digital Video Broadcasting-Terrestrial (DVB-T) in Europe, and Integrated Services Digital Broadcasting-Terrestrial (ISDB-T) in Japan. In terms of transmission system, DTV employs a single-carrier system, while DVB-T and ISDB-T employ multicarrier systems (OFDM: Orthogonal Frequency Division Multiplexing). The intent for each of these systems is to have a variety of features depending on the broadcasting services they target. ISDB-T features various reception formats, from fixed reception to mobile reception. It will also function as the sole broadcasting system for terrestrial digital television and terrestrial digital audio broadcasting.
机译:当前,世界上有三种地面数字电视系统。按照其发展的顺序,这些是美国的数字电视(DTV),欧洲的数字地面电视广播(DVB-T)和日本的地面综合业务数字广播(ISDB-T)。在传输系统方面,DTV采用单载波系统,而DVB-T和ISDB-T采用多载波系统(OFDM:正交频分复用)。这些系统中的每一个的目的是要具有多种功能,具体取决于它们针对的广播服务。 ISDB-T具有多种接收格式,从固定接收到移动接收。它还将用作地面数字电视和地面数字音频广播的唯一广播系统。

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