ESTIMATION OF TIME DIFFERENCE OF ARRIVAL (TDOA) IN MULTIPATH ENVIRONMENTS BASED ON SUB-NYQUIST RATE SAMPLING
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United States of America Patent
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Sep 4, 2014
app pub date -
Aug 30, 2012
filing date -
Aug 30, 2012
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Abstract
A method is provided for to determining a time difference of arrival (TDOA) between a first signal and a second signal. The method includes sampling a first signal at a sub-Nyquist rate to provide a first sampled signal; sampling a second signal at the sub-Nyquist rate to provide a second sampled signal, the first and second signals representing corresponding multipath channels; cross-correlating the first and second sampled signals; and determining an estimate of the TDOA between the first and second signals based on the sampled first and second signals.
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