CONTENTION-BASED ACCESS TO TONES IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING (OFDM) WAVEFORM
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United States of America Patent
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app pub date -
Feb 8, 2007
filing date -
Feb 6, 1995
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Abandoned
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Abstract
A bi-directional communication system is provided. The system includes a multipoint-to-point host unit and a plurality of remote units communicatively coupled to the multipoint-to-point host unit through an orthogonal frequency division multiplexing waveform. A first remote unit of the plurality of remote units is configured to transmit upstream information to the multipoint-to-point host unit using one or more tones within the orthogonal frequency division multiplexing waveform. The first remote unit of the plurality of remote units is configured to detect a potential collision on one or more tones transmitted from the first remote unit and signals transmitted on one or more of the same tones within the orthogonal frequency division multiplexing waveform by another remote unit of the plurality of remote units.
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