Pulse or digital communications – Receivers – Automatic baseline or threshold adjustment
Reexamination Certificate
2006-03-25
2009-02-10
Torres, Juan A (Department: 2611)
Pulse or digital communications
Receivers
Automatic baseline or threshold adjustment
C375S319000, C327S307000
Reexamination Certificate
active
07489741
ABSTRACT:
A method to perform DC compensation on a Radio Frequency (RF) burst transmitted between a servicing base station and a wireless terminal in a cellular wireless communication system that first receives the RF burst modulated according to either a first or second modulation format. Samples from the RF burst, or taken from the training sequence, are produced and averaged to produce a DC offset estimate. The DC offset estimate is then subtracted from each of the samples. The modulation format of RF burst may then be identified from the samples. Depending on the identified modulation format the DC offset estimate may be re-added to the samples when a particular modulation format is identified as the modulation format of the RF burst. This decision is made based on how well various components within the wireless terminal perform DC offset compensation.
REFERENCES:
patent: 6456598 (2002-09-01), Le Strat et al.
patent: 6539205 (2003-03-01), Wan
patent: 6756924 (2004-06-01), Lee et al.
patent: 7123670 (2006-10-01), Gilbert et al.
patent: 2002/0186761 (2002-12-01), Corbaton et al.
patent: 2003/0063690 (2003-04-01), Paulus et al.
patent: 2003/0134604 (2003-07-01), Gunzelmann
patent: 2004/0082302 (2004-04-01), Shippee
patent: 2004/0209573 (2004-10-01), Happonen et al.
patent: 0 671 817 (1995-09-01), None
patent: 1 033 852 (1999-02-01), None
patent: 1 176 750 (2002-01-01), None
patent: 2 341 296 (2000-03-01), None
patent: WO 00/69023 (2000-11-01), None
patent: WO 01/33792 (2001-05-01), None
patent: WO 02/071608 (2002-09-01), None
Fague “Performance evaluation of a direct conversion radio for tri-band GSM and GPRS applications” IEEE VTS-Fall VTC 2000, 52nd Vehicular Conference, 2000. vol. 3, Sep. 24-28, 2000 pp. 1321-1327 vol. 3.
Ariyavisitakul S. L., et al; “A Broadband Wireless Packet Technique Based on Coding, Diversity and Equalization”; Universal Personal Communications 1998: (p. 363-367).
Sollenberger Nelson R.
Yang Baoguo
Broadcom Corporation
Garlick Bruce E.
Garlick & Harrison & Markison
Torres Juan A
LandOfFree
System and method to perform DC compensation on a radio... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method to perform DC compensation on a radio..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method to perform DC compensation on a radio... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4122727