Pulse or digital communications – Testing – Signal noise
Reexamination Certificate
2007-08-07
2007-08-07
Payne, David C. (Department: 2611)
Pulse or digital communications
Testing
Signal noise
C375S130000, C375S140000, C375S145000, C375S147000, C375S260000
Reexamination Certificate
active
10290749
ABSTRACT:
Noise measurements are made within a fraction of a single symbol period of a longest orthogonal code symbol. A control processor identifies an unoccupied code having a spreading factor that is less than a longest spreading factor for the system. A despreader measures symbol energy based on the unoccupied code and a noise estimator generates noise estimations based on the measured symbol energies. The subscriber station uses similar techniques in order to perform channel estimations within a period that is a fraction of a symbol period of a longest-spreading-factor code.
REFERENCES:
patent: 5506865 (1996-04-01), Weaver, Jr.
patent: 5751761 (1998-05-01), Gilhousen
patent: 5930230 (1999-07-01), Odenwalder et al.
patent: 6414988 (2002-07-01), Ling
patent: 2002/0057730 (2002-05-01), Karlsson et al.
patent: 2002/0067692 (2002-06-01), Yun et al.
patent: 2002/0097785 (2002-07-01), Ling et al.
patent: 2002/0118765 (2002-08-01), Nangia et al.
patent: 2002/0136278 (2002-09-01), Nakamura et al.
patent: 0139408 (2001-05-01), None
patent: 0057654 (2001-08-01), None
patent: 0161949 (2001-08-01), None
Bhashyam Srikrishna
Malladi Durga P.
Shiu Da-shan
Brown Charles D.
DSouza Adolf
Patel Milan I.
Payne David C.
Qualcomm Incorporated
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