Compensation of sampling frequency offset and local...

Details Compensation of sampling frequency offset and local... Compensation of sampling frequency offset and local...

2006-10-03

2006-10-03

Ha, Dac V. (Department: 2634)

Pulse or digital communications

Synchronizers

Synchronizing the sampling time of digital data

C375S344000, C375S349000, C455S182200, C455S192200, C370S503000

Reexamination Certificate

active

07116741

ABSTRACT:
A partial Fourier Transform is performed, using Goertzel's algorithm, to calculate two frequency bins. A phase variation is calculated for each bin, the phase variation preferably representing the phase difference between the bin calculated by a Fourier Transform performed on samples in a guard interval and the bin calculated by a Fourier Transform performed on matching samples within the useful part of the symbol. The local oscillator frequency offset is compensated by summing the phase variations, and the sampling frequency offset is compensated by taking the difference between the phase variations.

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