Synchronization techniques in multipoint-to-point communication using orthogonal frequency division multiplexing
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United States of America Patent
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Apr 13, 2010
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Nov 17, 2008
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Feb 6, 1995
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Abstract
Systems and methods for synchronization techniques in multipoint-to-point communication using orthogonal frequency division multiplexing are provided. In one embodiment, a method for multipoint-to-point communication comprises: receiving at a host a plurality of upstream symbols transmitted from a plurality of remote units, the upstream symbols transmitted on a plurality of orthogonal carriers modulated using an inverse Fourier transform; and determining respective round trip path delay values associated with each of at least two of the plurality of remote units.
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