Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Reexamination Certificate
2006-10-17
2006-10-17
Urban, Edward F. (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
C342S357490, C342S357490
Reexamination Certificate
active
07123895
ABSTRACT:
A communications transceiver is implemented by modifying a GPS user equipment. In a data reception mode, a communications signal that has a carrier frequency outside the L-band, and that has been phase modulated by a PN code and by data encoded therein, is received from a conventional L-band GPS antenna. The signal is downconverted to the L-band input frequency of the GPS transceiver, and subjected to automatic gain control. The GPS transceiver software is modified so as to recognize and replicate the PN code, and to demodulate the data-bearing signal. In the data transmission mode, the data to be transmitted are modulated onto the selected PN code sequence. The data-modulated PN signal is converted to a non L-band transmission frequency. Normal operation of the GPS transceiver navigation functions is maintained in parallel with the communications functions.
REFERENCES:
patent: 6069584 (2000-05-01), Johnson
patent: 6542113 (2003-04-01), Fujii
patent: 6608589 (2003-08-01), Devereux et al.
patent: 6785543 (2004-08-01), Karabinis
patent: 6785757 (2004-08-01), Hatsumoto
Greenspan Richard L.
Przyjemski Joseph M.
Greenberg & Traurig, LLP
Lappin Mark G.
Nugyen Tu X.
The Charles Stark Draper Laboratory Inc.
Urban Edward F.
LandOfFree
Method and system for implementing a communications... 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 system for implementing a communications..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for implementing a communications... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3678531