Channel estimator with extended channel bandwidth

Details Channel estimator with extended channel bandwidth Channel estimator with extended channel bandwidth

2004-12-16

2009-08-11

Fan, Chieh M. (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C455S188100

Reexamination Certificate

active

07573964

ABSTRACT:
A method (1700) and apparatus (1801) provide channel estimation with extended bandwidth filters. Antenna (1813) receives a signal such as a pilot signal and detects a bandwidth associated with the pilot signal in a detector (320). One of a plurality of filters (603, 605, 607, and609) including extended bandwidth filters (311) and a default filter (305) can be selected by a selector (617). If the detector detects activity associated with a wider bandwidth, the filter associated with the wider bandwidth is selected over the presently selected filter. If no activity is detected, the default filter is selected.

REFERENCES:
patent: 5694414 (1997-12-01), Smith et al.
patent: 6584304 (2003-06-01), Thomsen et al.
patent: 6760362 (2004-07-01), Patel et al.
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patent: 2002/0044593 (2002-04-01), Kuo
patent: 2002/0167913 (2002-11-01), Leung
patent: 2002/0172307 (2002-11-01), Sandberg
patent: 2002/0181553 (2002-12-01), Mallett et al.
patent: 2003/0087622 (2003-05-01), Jayaraman et al.
patent: 2005/0085203 (2005-04-01), Suganuma

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