摘要
为了实现由模拟到数字的平滑过渡,解决频率与设备的短缺,同一部发射机可以按照不同的方案同时播出DRM数字节目与模拟节目。本文分析了几种可能的同播方式与相关问题,讨论了同播时电压和功率分配与接收质量的关系,指出了DX系列发射机同播运行的优势。
At present, there is no ripe and practical experience to gain in the simulcasting of digital and analog program in the world. And a theoretical analysis needs to be checked and proved in a massive practice. Several possible simulcasting modes and associate problems are explored, the relations between the voltage and power distribution and reception quality in simulcasting are analysed and the advantages of simulcast operation of DX series transmitters are pointed out. In the process of smooth transition from analog to digital the problem of simulcasting digital and analog program would be encountered for lack of frequencies and equipment. The present article has a certain directive function and a reference value in solving the above- mentioned problem.
出处
《广播与电视技术》
北大核心
2005年第3期116-119,15,共4页
Radio & TV Broadcast Engineering
