(pronounced as separate letters) Short for Orthogonal Frequency Division Multiplexing
, an FDM modulation
technique for transmitting large amounts of digital data over a radio wave. OFDM works by splitting the radio signal into multiple smaller sub-signals that are then transmitted simultaneously at different frequencies to the receiver. OFDM reduces the amount of crosstalk
in signal transmissions. 802.11a WLAN
, 802.16 and WiMAX technologies use OFDM.
Compare with FHSS and DSSS.
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