What Does Orthogonal Frequency Division Multiplexing (OFDM) Mean?
Orthogonal frequency division multiplexing (OFDM) is a technique, method or scheme for digital multi-carrier modulation using many closely spaced subcarriers - a previously modulated signal modulated into another signal of higher frequency and bandwidth. Each of these subcarriers contains numbers of parallel data streams or channels and is modulated conventionally at a low symbol rate; these are groups of bits of data related to (but not the same as) gross bitrate, which is expressed in bits/second.
Techopedia Explains Orthogonal Frequency Division Multiplexing (OFDM)
The term “orthogonal” is actually an adjective describing two things acting independently or in an uncorrelated manner; in this case, any two signals of an OFDM-based product operating without dependence on, or interference with, one another.
