OFDM-based device and method for performing synchronization in the presence of interference signals
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United States of America Patent
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Mar 13, 2012
Grant Date -
Nov 27, 2008
app pub date -
May 23, 2008
filing date -
May 25, 2007
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Expired
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Abstract
An OFDM-based device and method for performing synchronization utilizes a time-domain preamble of an incoming OFDM-based signal to compute an estimated fine frequency offset. The computation of the estimated fine frequency offset involves multiplying values of the time-domain preamble with conjugates of corresponding values of a selected base station time-domain preamble, averaging the resulting multiplied values in predefined segments and self-correlating the resulting averaged values to derive a self-correlation value, which is used to compute the estimated fine frequency offset.
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