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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（HFC）中的应用。
OFDM is a new type of modulation, called Orthogonal Frequency Division Multiplexing. The principle, system composition and excellent properties of OFDM and its application in digital television transmission and hybrid fiber-optic cable network (HFC) are expounded.