Telecommunications – Transmitter and receiver at separate stations – Single message via plural carrier wave transmission
Patent
1994-09-06
1997-02-11
Faile, Andrew
Telecommunications
Transmitter and receiver at separate stations
Single message via plural carrier wave transmission
455 63, 4552263, 4552264, 455296, H04B 1700
Patent
active
056030878
ABSTRACT:
Briefly described, the present invention is a circuit for detecting and indicating a level of interference on a high frequency angular modulated signal. This circuit includes a logarithmic amplifier for receiving high frequency angular modulated signals and for providing a logarithmic amplifier output in response thereto. Next, the angular modulated signals are detected to determine a level of associated FM modulation thereof. Finally, a processor, programmed to distinguish those high frequency spectrum components due to interference from those due to other sources, determines a carrier to interference ratio. Of note, when the level of FM modulation at the logarithmic amplifier input exceeds a predetermined threshold, however, the associated carrier to interference ratio is ignored.
REFERENCES:
patent: 4268722 (1981-05-01), Little et al.
patent: 4412350 (1983-10-01), Miedema
patent: 4485486 (1984-11-01), Webb et al.
patent: 4549311 (1985-10-01), McLaughlin
patent: 4561114 (1985-12-01), Kozono
patent: 4654867 (1987-03-01), Labedz et al.
patent: 4696027 (1987-09-01), Bonta
patent: 4777659 (1988-10-01), Lindenmeier et al.
patent: 4882768 (1989-11-01), Obana et al.
patent: 4998289 (1991-03-01), Rabe et al.
patent: 5128965 (1992-07-01), Henriksson
Modern Digital and Analog Communications Systems B. P. Lathi, 1983, pp. 64-66.
All Digital Rayleigh Fading Simulator, Richard Comroe, Proceeding of the National Electronic Conference, vol. 32 Chicago, IL, USA C16-18 Oct. 1978.
Faile Andrew
Motorola Inc.
Sonnentag Richard A.
LandOfFree
Interference detection technique does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Interference detection technique, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interference detection technique will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-351363