Apparatus, and associated method, for estimating frequency...

Details Apparatus, and associated method, for estimating frequency... Apparatus, and associated method, for estimating frequency...

2005-04-19

2005-04-19

Le, Amanda T. (Department: 2634)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S326000, C455S441000, C455S070000

Reexamination Certificate

active

06882694

ABSTRACT:
Apparatus, and an associated method, for estimating frequency offset introduced upon symbols of a sequence communicated by a sending station to a data destination during operation of a communication system. A received sequence is rotated by multiplying the symbols thereof by offset values selected from a set of offset values. Then, for each rotated sequence, an estimation of a data sequence is made. Noise indicia associated with each estimated data sequence is calculated. And, comparisons are made of the noise indicia associated with each of the estimated data sequences. Responsive to the comparisons, selection is made of the frequency offset that has been introduced upon the data sequence.

REFERENCES:
patent: 5884178 (1999-03-01), Ericsson et al.
patent: 6393068 (2002-05-01), Rupp
patent: 123311 (2002-09-01), Nagayasu
patent: 6628926 (2003-09-01), van de Beek et al.
patent: 20020064210 (2002-05-01), Sullivan
patent: 20020123311 (2002-09-01), Nagayasu

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