SYMBOL ALIGNMENT IN MULTIPOINT-TO-POINT ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING COMMUNICATION
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United States of America Patent
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app pub date -
Feb 14, 2007
filing date -
Feb 6, 1995
priority date (Note) -
Abandoned
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Importance
Abstract
A system is provided. The system includes a host and a plurality of remote units. Upstream bandwidth capacity is shared among a plurality of remote units in a manner that permits at least two of the remote units to transmit to the host at any one time using the upstream bandwidth capacity. The upstream bandwidth capacity includes a plurality of orthogonal tones generated using inverse fast Fourier transforms. The host causes at least one remote unit to adjust the manner in which symbols are transmitted therefrom on at least one of the plurality of orthogonal tones in order to improve the alignment of symbols received at the host.
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