Orthogonal Frequency Division Multiplexing (OFDM) is a special case of multicarrier transmission, in which a single high rate datastream is transmitted using a number of lower data rate subcarriers.

• OFDM(Orthogonal Frequency Division Multiplexing 正交频分多路复用)是一种特殊的多载波传输方式，由于它使用一系列低速子载波并行传输数据，使得传输速率得到大幅度提高。