Doppler frequency estimating device, receiving device, recording medium and Doppler frequency estimating method
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United States of America Patent
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Oct 23, 2012
Grant Date -
May 27, 2010
app pub date -
Nov 19, 2009
filing date -
Nov 21, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device of an example of the invention comprises a first section of which performs inverse fast Fourier transform for a channel estimation value obtained by channel estimation to obtain a channel impulse response, a second section which selects paths that belong to a group having a large element based on elements of paths for the channel impulse response, a third section which calculates autocorrelation values by time averaging for each of the paths selected by the second section, a fourth section which obtains an ensemble average value of the autocorrelation values by time averaging obtained by the third section, and a fifth section which obtains a Doppler frequency associated with the ensemble average value based on a characteristic of a relationship between an autocorrelation value and a Doppler frequency and the ensemble average value.
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