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1.前言最近几年间,由尤利卡147号工程和欧州广播联盟一起完成了欧州共同体内数字声频广播(DAB)的研制工作。由尤利卡147号工程小组研制的传输系统称作正交分频多路传输(COFDM)。该系统能处理在移动环境中与数字传输有关的问题,并能采用多路传播改善其性能。
1. INTRODUCTION In recent years, the project of digital audio broadcasting (DAB) in the European Community has been completed by Eureka Project 147 and the European Broadcasting Union. The transmission system developed by Eureka Engineering Group 147 is called Orthogonal Frequency Division Multiplexing (COFDM). The system handles issues related to digital transmission in a mobile environment and can use multicast to improve its performance.