Clustered OFDM communication system
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United States of America Patent
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Jun 22, 1999
Grant Date -
N/A
app pub date -
Oct 15, 1996
filing date -
Mar 8, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
A multicarrier communication system for wireless transmission of blocks of data having a plurality of digital data symbols in each block. The communication system includes a device for distributing the digital data symbols in each block over a plurality of clusters, each of the clusters receiving one or more digital data symbols. The digital data symbols are encoded in each of the cluster; and modulated in each cluster to produce a signal capable of being transmitted over the sub-channels associated with each cluster. A transmitter thereafter transmits the modulated signal over the sub-channels. By distributing the modulated signal over a plurality of clusters, overall peak-to-average power (PAP) ratio is reduced during transmission and transmitter diversity is improved.
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