Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2008-04-01
2008-04-01
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S347000, C375S350000
Reexamination Certificate
active
07352794
ABSTRACT:
A method and arrangement for use in a single user detector in a CDMA multi-path system, comprising providing a finite impulse response (FIR) filter; and configuring the FIR filter to derive at least a first, then a second, then a third, then a fourth of the following parameters for single user detection: R (auto-correlation) function; L (Cholesky decomposition) value; X value representative of the complex conjugate of a channel impulse response multiplied and summed with time shifted versions of a received signal; back substitution value Y (function of R, X and L); and back substitution value S (function of R, X, Y and L).
REFERENCES:
patent: 5717619 (1998-02-01), Spurbeck et al.
patent: 6078573 (2000-06-01), Batalama et al.
patent: 6314147 (2001-11-01), Liang et al.
patent: 6377611 (2002-04-01), Hwang
patent: 6411976 (2002-06-01), Cesari et al.
patent: 6459334 (2002-10-01), Wright et al.
patent: 6466611 (2002-10-01), Bachu et al.
patent: 6826226 (2004-11-01), Sahlin et al.
patent: 6870882 (2005-03-01), Al-Dhahir et al.
patent: 6999509 (2006-02-01), Awad et al.
patent: 7027536 (2006-04-01), Al-Dhahir
patent: 7079607 (2006-07-01), Brunel
patent: 2004/0047400 (2004-03-01), Iinatti et al.
patent: 0926913 (1999-06-01), None
patent: WO-01/22610 (2001-03-01), None
Pados et. al., “Auxiliary-Vector Filters and Adaptive Steering for DS-CDMA Single-User Detection”, IEEE 1999.
Great Britain Search Report mailed May 13, 2001, for Great Britain Application No. 0123520.9 filed Oct. 1, 2001, 1 page.
Klein et al. (1996). “Zero Forcing and Minimum Mean-Square-Error Equalization for Multiuser Detection in Code-Division Multiple-Access Channels,” IEEE Transactions on Vehicular Technology, 45(2):276-287.
Frederikos et al. (1999). “A Parallel Fractional Adaptive Single-User Receiver for Asynchronous CDMA Systems,” IEEE Transactions on Vehicular Technology, pp. 588-592.
International Search Report mailed on Apr. 29, 2003 for PCT Application No. PCT/GB02/04414 filed on Oct. 01, 2002, one page.
Ghayour Mohammed
IP Wireless Inc.
Morrison & Foerster / LLP
Vlahos Sophia
LandOfFree
Method and arrangement for use in a single user detector for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and arrangement for use in a single user detector for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and arrangement for use in a single user detector for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2784729