Firstly, this paper describes the essential features of DRM, gives an introduction to its key techniques, testifies that the AM broadcast channel is weak extended channel, and brings forward its own channel model.

• 论文首先描述了数字调幅广播的基本特征，介绍了其关键技术，证明了调幅广播信道是弱扩展信道，并给出了DRM的信道模型。