Doppler frequency detector, doppler frequecny estimating...

Details Doppler frequency detector, doppler frequecny estimating... Doppler frequency detector, doppler frequecny estimating...

2006-06-16

2010-12-14

Nguyen, Tuan H (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

C455S067110, C455S423000, C375S344000, C375S347000

Reexamination Certificate

active

07853219

ABSTRACT:
Disclosed is a Doppler frequency detector for detecting a Doppler frequency of a received signal. The detector includes a channel estimating unit, a channel phase variation amount calculating unit, a Doppler frequency estimating unit and a calculation interval calculating unit. The channel estimating unit calculates a channel estimate based on a pilot signal in the received signal. The channel phase variation amount calculating unit calculates channel phase variation amount based on the channel estimate and a calculation interval. The Doppler frequency estimating unit estimates the Doppler frequency based on the channel phase variation amount and outputs a Doppler frequency estimate. The calculation interval calculating unit calculates the calculation interval based on the Doppler frequency estimate and supplies the calculated calculation interval to the channel phase variation amount calculating unit.

REFERENCES:
patent: 6850505 (2005-02-01), Ostberg
patent: 7164737 (2007-01-01), Han
patent: 2001-24727 (2001-01-01), None
patent: 2003-508969 (2003-03-01), None
patent: 2003-198426 (2003-07-01), None
patent: 2004-15819 (2004-01-01), None

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