Systems and method for orthogonal frequency divisional multiplexing
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United States of America Patent
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Feb 1, 2011
Grant Date -
Mar 13, 2008
app pub date -
Oct 29, 2007
filing date -
Feb 6, 1995
priority date (Note) -
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Abstract
Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprising: a receiver configured to de-modulate symbols from at least one of a plurality of spectrally overlapping carrier signals; a transmitter configured to modulate symbols onto at least one of a plurality of the spectrally overlapping carrier signals; a processor coupled to the transmitter, wherein the processor outputs data for transmission by the transmitter, wherein the processor applies an inverse Fourier transform to the data transmitted by the transmitter; and a controller programmed to multiplex both payload data and control data onto a first carrier of the spectrally overlapping carrier signals.
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