Method, apparatus and system for pilotless frequency offset compensation in multipoint-to-point wireless systems with OFDM
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United States of America Patent
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Issued Date -
Apr 21, 2005
app pub date -
Oct 16, 2003
filing date -
Oct 16, 2003
priority date (Note) -
Abandoned
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Abstract
Apparatus, methods and systems for frequency offset compensation in multipoint-to-point orthogonal frequency division multiplexing (OFDM) systems are provided. In the hub, frequency offset estimates are made in the frequency domain for each group of carriers of the OFDM system. The hub then transmits indications (parameters) of the frequency offset for each group of carriers to the nodes. Frequency offset compensation is then accomplished in each node, preferably in the time domain.
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