Fractional carrier frequency offset estimator and method of...

Details Fractional carrier frequency offset estimator and method of... Fractional carrier frequency offset estimator and method of...

2007-04-18

2010-10-05

Urban, Edward (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S317000, C375S260000, C375S267000

Reexamination Certificate

active

07809344

ABSTRACT:
Fractional carrier frequency offset estimators and related methods are disclosed. The invention may be particularly applied in WiMAX systems. The disclosed method of estimating fractional carrier frequency offset between a transmitter and a receiver includes calculating a first delay correlation based on a first and a second preamble repetitions included in a received signal, processing the phase of the first delay correlation to compensate for a phase rotation of the first delay correlation, and estimating the fractional carrier frequency offset by multiplying a processed phase value, generated after the step of processing the phase of the first delay correlation, by a predetermined value.

REFERENCES:
patent: 5732113 (1998-03-01), Schmidl et al.
patent: 7508791 (2009-03-01), Kalhan et al.
patent: 7613104 (2009-11-01), Bhatt et al.

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