Robust fine frequency and time estimation in mobile multimedia multicast system receivers
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United States of America Patent
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May 17, 2011
Grant Date -
Oct 8, 2009
app pub date -
Apr 4, 2008
filing date -
Apr 4, 2008
priority date (Note) -
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Abstract
A technique for estimating a carrier frequency offset and a timing offset in a MediaFLO™ (Forward Link Only) system, wherein the method comprises receiving Orthogonal Frequency Division Multiplexing (OFDM) symbols; interpolating pilots on odd or even symbols of the received OFDM symbols; determining a phase difference between two successive symbols using the interpolated pilots; obtaining an estimate of the carrier frequency offset and the timing offset from the determined phase difference between two successive symbols; and correcting a sampling frequency in accordance with the estimated carrier frequency offset and timing offset.
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