SYSTEMS AND METHOD FOR ORTHOGONAL FREQUENCY DIVISIONAL MULTIPLEXING
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United States of America Patent
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app pub date -
Oct 29, 2007
filing date -
Feb 6, 1995
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Abandoned
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Abstract
Systems and methods for orthogonal frequency division multiplexing are provided. In one embodiment, a multi-carrier modem comprises a receiver configured to receive a waveform comprising a plurality of spectrally overlapping carrier signals from at least two of a plurality of remote units, wherein the plurality of spectrally overlapping carrier signals are modulated using an inverse Fourier transform algorithm; and a processor coupled to the receiver, wherein the processor applies a Fourier transform algorithm to demultiplex upstream data modulated onto the waveform by the at least two of a plurality of remote units
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