Telecommunications – Wireless distribution system – Receiver for satellite broadcast
Reexamination Certificate
2006-11-10
2009-10-20
Ferguson, Keith T (Department: 2618)
Telecommunications
Wireless distribution system
Receiver for satellite broadcast
C455S003010, C455S550100, C455S553100, C455S003040, C455S003030, C343S705000, C343S702000, C343S777000, C343S763000, C342S357490, C342S359000
Reexamination Certificate
active
07606528
ABSTRACT:
An apparatus comprises a distributed array of antenna elements for receiving a radio frequency signal on a satellite communications link, wherein the radio frequency signal includes a known preamble; a plurality of mixers for translating the radio frequency signal to a plurality of baseband signals having in-phase and quadrature components; a processor for applying weights to the baseband signals, wherein the weights are found adaptively in response to the preamble in combination with decision-directed feedback when the preamble is not present; and a receiver for processing the weighted baseband signals. A pre-processor can be used to create sub-arrays of the antenna elements using maximal-ratio weighting. A method performed by the apparatus is also provided.
REFERENCES:
patent: 5317322 (1994-05-01), Grobert
patent: 6212406 (2001-04-01), Keskitalo et al.
patent: 6345188 (2002-02-01), Keskitalo et al.
patent: 6492958 (2002-12-01), Yoshida
patent: 6509865 (2003-01-01), Takai
patent: 6671499 (2003-12-01), Ylitalo et al.
patent: 6784831 (2004-08-01), Wang et al.
patent: 6845244 (2005-01-01), Ide et al.
patent: 2003/0146880 (2003-08-01), Chiang et al.
patent: 2003/0222818 (2003-12-01), Regnier et al.
patent: 2009/0141829 (2009-06-01), Feher
R. P. Gooch et al., “Joint Spatial and Temporal Equalization in a Decision-Directed Adaptive Antenna System”, Twenty-Second Annual Asilomar Conference on Signals, Systems, and Concepts, Oct. 31-Nov. 2, 1988, 13 pgs.
A. Swindlehurst et al., “Analysis of a Decision Directed Beamformer”, 22 pgs.
Ferguson Keith T
Lenart, Esq. Robert P.
Northrop Grumman Corporation
Pietragallo Gordon Alfano Bosick & Raspanti, LLP
LandOfFree
Distributed conformal adaptive antenna array for SATCOM... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Distributed conformal adaptive antenna array for SATCOM..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Distributed conformal adaptive antenna array for SATCOM... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4126449