DATA-SPECIFIC BANDWIDTH ALLOCATION IN MULTIPOINT-TO-POINT COMMUNICATION USING ORTHGONAL FREQUENCY DIVISION MULTIPLEXING
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United States of America Patent
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app pub date -
Apr 18, 2007
filing date -
Feb 6, 1995
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Abandoned
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Abstract
A bidirectional communication system is provided. In one embodiment, a system comprises: a host unit and a plurality of remote units using a multiple access scheme to communicate at the same time with the host unit using orthogonal frequency division multiplexing (OFDM). The host unit allocates only a subset of available orthogonal tones within the OFDM system to at least one of the plurality of remote units. The host unit allocates a number of orthogonal tones to the at least one remote unit for upstream transmission based at least in part on a type of data to be transmitted by the at least one remote unit.
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