论文部分内容阅读
数字电视是一个系统工程,其特性的优劣并不仅仅是信源与信道的编码与解码、纠错、检错等,而与实际的应用场合和服务对象密切相关。对于一个数字电视系统,其服务范围和服务质量不仅仅取决于编码、发射,同时与接收设备的性能密切相关。美国ATSC的数字电视(DTV)标准被联邦通讯委员会(FCC)选定为美国的地面广播标准。对于美国的数字电视广播,其优缺点和适用场合已成为人们争议的对象,
Digital television is a systematic project. The advantages and disadvantages of its characteristics are not only the encoding and decoding of source and channel, error correction, error detection, but also with the actual application and service objects. For a digital television system, its service range and quality of service not only depends on the coding and transmitting, but also on the receiving device’s performance. The U.S. ATSC Digital Television (DTV) standard was selected by the Federal Communications Commission (FCC) as a U.S. terrestrial broadcast standard. For the United States of digital television broadcasting, its advantages and disadvantages and the application of the occasion has become the object of controversy,