Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-04-25
2006-04-25
Chin, Stephen (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S136000, C375S141000, C375S142000, C375S316000, C375S325000, C342S171000, C342S357490
Reexamination Certificate
active
07035315
ABSTRACT:
A method and communications receiver is disclosed that removes Doppler frequency shift in a spread spectrum communications signal. A pilot channel rake section has I and Q Doppler estimation channels for estimating the Doppler change in frequency based on a common pilot channel. A data channel rake section has I and Q data channels for receiving the Doppler change in frequency from the pilot channel rake section and canceling any Doppler error.
REFERENCES:
patent: 5007068 (1991-04-01), Simon et al.
patent: 5640431 (1997-06-01), Bruckert et al.
patent: 5659573 (1997-08-01), Bruckert et al.
patent: 5691974 (1997-11-01), Zehavi et al.
patent: 5894473 (1999-04-01), Dent
patent: 5910950 (1999-06-01), ten Brink
patent: 6085104 (2000-07-01), Kowalski et al.
patent: 6141374 (2000-10-01), Burns
patent: 6163563 (2000-12-01), Baker et al.
patent: 6363102 (2002-03-01), Ling et al.
patent: 6678314 (2004-01-01), Juntti et al.
patent: 6680969 (2004-01-01), Molnar et al.
patent: 6700919 (2004-03-01), Papasakellariou
patent: 0 898 379 (1999-02-01), None
patent: 96/10879 (1996-04-01), None
patent: 00/65797 (2000-11-01), None
Glisic, Savo G. et al., “Design Study For A CDMA-Based LEO Satellite Network: Downlink System Level Parameters,” IEEE Journal on Selected Areas in Communications, vol. 14, No. 9, Dec. 9, 1996.
Chin Stephen
Lucent Technologies - Inc.
Wang Ted M.
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