System and method for round trip delay adjustment in a multipoint-to-point orthogonal frequency division multiplexing system
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United States of America Patent
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Aug 5, 2008
Grant Date -
Feb 14, 2008
app pub date -
Oct 26, 2007
filing date -
Feb 6, 1995
priority date (Note) -
Expired
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Abstract
Systems and methods for round-trip-delay adjustment in a multipoint-to-point orthogonal frequency division multiplexing (OFDM) system 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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