Why DSL can be called a wide band technology is because it exploits OFDM which represents Orthogonal Frequency Division Multiplexing.

DSL技术之所以能够被称为宽带技术，主要是由于它的复用方式是OFDM。

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OFDM (Orthogonal Frequency Division Multiplexing) is a new modulation technology, it is suitable to high-data-rate transmission in the wireless transfer channel with multi-path transmission.

正交频分复用(OFDM)是一种新型调制技术，特别适合在多径传播的无线移动信道中高速传输数据。

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Orthogonal Frequency Division Multiplexing (OFDM) is a critical technology for the realization of broadband power line communication.

正交频分复用(OFDM)是实现宽带电力线通信的关键技术。

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