Method and system for frequency offset estimation

Details Method and system for frequency offset estimation Method and system for frequency offset estimation

2007-03-13

2007-03-13

Nguyen, Lee (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C375S147000, C375S344000, C375S375000

Reexamination Certificate

active

10927541

ABSTRACT:
A method and system for estimating a frequency offset between a receiver and a transmitter, including the steps of, or means for: (a) receiving a first signal from said transmitter and demodulating the first signal; (b) performing a frequency shift on said first signal by a predetermined frequency factor to generate a second signal; (c) filtering each of said first and second signals; (d) determining the power of each of the filtered first and second signals; (e) determining an upper corner frequency value of the first signal using the power of the filtered first and second signals; (f) determining a lower corner frequency of the first signal using the determined power of the filtered first and second signals; and (g) determining a frequency offset value based on said upper corner frequency value and said lower corner frequency value.

REFERENCES:
patent: 6996156 (2006-02-01), Ono
patent: 2002/0045433 (2002-04-01), Vihriala

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