Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-07-31
2007-07-31
Payne, David C. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
Reexamination Certificate
active
10487602
ABSTRACT:
In order to determine the optimal sampling point for a series of spread-coded data, received by a radio, a correlation data series is used that is produced by convoluting the channel impulse response of the transmission channel with the spread data series, known at the receiving end. The channel impulse response is determined using a channel estimator according to a training sequence. An early-late correlator correlates the correlation data series with the received data in order to generate a correction signal for the optimal sampling point.
REFERENCES:
patent: 5602832 (1997-02-01), Hudson
patent: 5640416 (1997-06-01), Chalmers
patent: 6549559 (2003-04-01), Kamgar et al.
patent: 6891886 (2005-05-01), Doetsch et al.
patent: 2002/0037028 (2002-03-01), Baltersee et al.
patent: 2003/0156603 (2003-08-01), Rakib et al.
patent: 198 39 018 (2000-03-01), None
patent: 199 53 350 (2001-05-01), None
patent: 2 282 300 (1995-03-01), None
patent: WO 99/34528 (1999-07-01), None
“Blind Multiuser identification and Detection in CDMA Systems”, Javier R. Fonollosa, Jose A.R. Fonollosa, Zoran Zvonar and Josep Vidal,Acoustics, Speech and Signal Processing, 1995, ICASSP-95, International Conference on Detroit, MI, USA, May 12-19, 1995, New York, NY, USA, IEEE, US, May 9, 1995, pp. 1876-1879.
“Data Detection Techniquest for DS/CDMA Mobile Systems: A Review”, Dimitris Koulakiotis and A. Hamid Aghvami, IEEE Personal Communications, IEEE Communications Society, US, vol. 7, No. 3, Jun. 3, 2000, pp. 24-34.
“Adaptive Maximum-Likelihood Receiver for Carrier-Modulated Data-Transmission Systems”, Gottfried Ungerboeck, IEEE Transactions on Communications, IEEE Inc., New York, US, vol. COM-22, No. 5, May 1, 1974, pp. 624-636.
International Search Report, International Application No. PCT/DE02/02591, International Filing date Jul. 15, 2002, 3 pgs.
Eschweiler & Associates LLC
Flores Leon
Infineon - Technologies AG
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