Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2007-10-23
2007-10-23
Jain, Raj K. (Department: 2616)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S310200, C370S320000, C370S328000, C370S332000, C370S335000, C370S342000, C370S441000, C375S148000, C375S130000, C375S341000
Reexamination Certificate
active
10262044
ABSTRACT:
A system is disclosed for use in a wireless communication system to provide an estimated pilot signal. The system includes a receiver and a front-end processing and despreading component in electronic communication with the receiver for despreading a CDMA signal. A pilot estimation component is in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a Kalman filter to produce a pilot estimate. A demodulation component is in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols. The Kalman filter is configured by an offline system identification process that calculates parameters using a prediction error method and a Gauss-Newton algorithm and generates state estimates using the Kalman filter. The calculating and generating are iteratively performed to train the Kalman filter for real-time operation.
REFERENCES:
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 5101501 (1992-03-01), Gilhousen et al.
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5764687 (1998-06-01), Easton
patent: 5768307 (1998-06-01), Schramm et al.
patent: 6240099 (2001-05-01), Lim et al.
patent: 6570910 (2003-05-01), Bottomley et al.
patent: 2007/0030827 (2007-02-01), Rui et al.
patent: 0021208 (2000-04-01), None
patent: WO 02/096049 (2002-11-01), None
Baltersee, J., et al. (2000) Performance analysis of phasor estimation algorithms for a FDD-UMTS RAKE Receiver. IEEE, 6thInt. Symp. Sep. 6-8; pp. 476-480.
Bohn, C., et al. (2001) Sensitivity models for nonlinear filters with application to recursive parameter estimation for nonlinear state-space models. IEEE Proc.-Control Theory Appl., vol. 148(2):137-145.
Shanmugan, K., et al. (2000) Channel estimation for 3G wideband CDMA systems using the kalman filtering algorithm. IEEE, XP-002254352m pp. 95-97.
Zhou, X., et al. (2000) Kalman filter channel tracking algorithm based on AR model in WCDMA systems. IEEE, Proceedings of ICSP2000, pp. 1759-1762.
Abrishamkar Farrokh
Kreutz-Delgado Kenneth
Jain Raj K.
Qualcomm Incorporated
Rouse Thomas R.
Velasco Jonathan T.
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