Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2006-12-26
2006-12-26
Burd, Kevin (Department: 2611)
Pulse or digital communications
Transceivers
Modems
C375S226000
Reexamination Certificate
active
07154942
ABSTRACT:
A method and apparatus for automated correlation of digital modulation impairment is described. The technique obtains soft decision data (116, 2502) and extracts signal space location information of sufficient resolution to distinguish different types of impairment to a digitally modulated signal. The technique applies an error vector magnitude mask (117, 502) and determines the signal-to-noise ratio of the digitally modulated signal. The technique applies impairment masks (118, 2504) and provides a characterization (119) of impairment affecting the digitally modulated signal (112). The technique determines a subset of the soft decision data (116, 2502) that falls within the impairment masks (118, 2505) and calculates correlation weights (2506). The technique may be used to identify, isolate, and classify different types of impairment. Given sufficient data collection, sources of impairments may be determined precisely.
REFERENCES:
patent: 3864632 (1975-02-01), Chang
patent: 4481645 (1984-11-01), Karabinis
patent: 5095535 (1992-03-01), Freeburg
patent: 5153877 (1992-10-01), Esaki
patent: 5479447 (1995-12-01), Chow et al.
patent: 5541955 (1996-07-01), Jacobsmeyer
patent: 5822299 (1998-10-01), Goodman
patent: 5825829 (1998-10-01), Borazjani et al.
patent: 5838740 (1998-11-01), Kallman et al.
patent: 5883819 (1999-03-01), Abu-Amera
patent: 5901185 (1999-05-01), Hassan
patent: 6032019 (2000-02-01), Chen et al.
patent: 6134230 (2000-10-01), Olofsson
patent: 6144696 (2000-11-01), Shively et al.
patent: 6212229 (2001-04-01), Salinger
patent: 6246717 (2001-06-01), Chen et al.
patent: 6314085 (2001-11-01), Saranka
patent: 6363053 (2002-03-01), Schuster
patent: 6389068 (2002-05-01), Smikth et al.
patent: 6442158 (2002-08-01), Beser
patent: 6523068 (2003-02-01), Beser et al.
patent: 6526538 (2003-02-01), Hewitt
patent: 6588016 (2003-07-01), Chen et al.
patent: 6700875 (2004-03-01), Schroeder
patent: 6909741 (2005-06-01), Smith et al.
patent: 7006565 (2006-02-01), Endres et al.
patent: 7016401 (2006-03-01), Smith et al.
patent: 2001/0001007 (2001-05-01), Polley et al.
patent: 2003/0016174 (2003-01-01), Anderson
patent: WO 97/48197 (1997-12-01), None
patent: WO 9818210 (1998-04-01), None
Smith Patrick D.
Uskali Robert G.
Burd Kevin
Driscoll Benjamin D.
General Instrument Corporation
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