Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-02-27
2007-02-27
Patel, Jay K. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S150000, C375S152000
Reexamination Certificate
active
09204370
ABSTRACT:
A searcher uses an input signal, and for example, a matched filter to generate a first set of candidate paths. A selector uses the input signal and the first set of candidate paths to generate a second set of paths. The second set of paths is used to configure the fingers of a RAKE receiver. According to one aspect of the invention, the first set of candidate paths contains M paths, and the second stage uses M correlators to generate a set of M correlation values. The second stage uses the M correlation values to select N paths that are used to configure the N fingers of the RAKE receiver. According to another aspect of the invention, the first set of candidate paths contains M paths, and the second stage uses a multiple of M correlators to track the M paths and generate a set of M estimates. The second stage uses the M estimates to select N paths that are used to configure the N fingers of the RAKE receiver. According to another aspect of the invention, the selector can generate new sets of N paths while the searcher is either active or inactive. The receiver can use a quality signal or a counter to notify the searcher and/or the selector to generate new sets of paths. The selector decreases the need to continuously run the matched filter. The receiver can re-configure the fingers without having to search for new paths. The receiver can also find paths that are uncorrelated and less susceptible to fading.
REFERENCES:
patent: 5799256 (1998-08-01), Pombo et al.
patent: 5987012 (1999-11-01), Bruckert et al.
patent: 5987016 (1999-11-01), He
patent: 6072807 (2000-06-01), Daudelin
patent: 6125137 (2000-09-01), Wang et al.
patent: 6222834 (2001-04-01), Kondo
patent: 6269075 (2001-07-01), Tran
patent: 6456827 (2002-09-01), Kubo et al.
patent: 0 690 588 (1996-01-01), None
patent: 0 825 727 (1998-02-01), None
patent: 0 853 389 (1998-07-01), None
patent: 0 858 175 (1998-08-01), None
patent: 2 318 952 (1998-05-01), None
patent: 10164011 (1998-06-01), None
Atarius Roozbeh
Carlsson Torsten J.
Eriksson H{dot over (a)}kan B.
Gustafsson Kjell B.
Östberg Christer
Lugo David B.
Patel Jay K.
Potomac Patent Group PLLC
Telefonaktiebolaget L M Ericsson (publ)
LandOfFree
Method and apparatus for configuring a rake receiver 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 apparatus for configuring a rake receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for configuring a rake receiver will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3812315