OFDM是一种新型的调制方式，称为正交频分复用。阐述了OFDM的原理、系系统组成和优良性质及其在数字电视传输和混合光纤电缆网(HF，C)中的应用。

-OFDM is a new type of modulation called orthogonal frequency division multiplexing. Elaborated the principle of the OFDM, the composition and good nature of the particle system and its digital television transmission and hybrid fiber cable network (HF and C) in the application.