Method for suppressing narrowband noise in a wideband...

Organic compounds -- part of the class 532-570 series – Organic compounds – Halogen containing

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C370S317000, C455S296000

Reexamination Certificate

active

10524988

ABSTRACT:
This invention is used in communications, for example, in expanded signal spectrum broadband communication systems. The technical effect of this invention consists in an enhanced narrow-band interference suppression factor and almost complete elimination of the effect displayed by a powerful narrow-band interference or a group of narrow-band interferences in a limited frequency band. A noise signal formed in the frequency band (F0, F1) in the transmission channel of a broadband communication system is power-modulated by a given modulation technique at a modulation frequency Fmod<<(F1−F0) and passed through a propagation medium, in which a narrow-band interference is superimposed thereon; received in the receiver; filtered in the frequency band (F0, F1); amplified, and divided into two signals. One of the signals is obtained by amplifying the filtered signal and limiting the amplitude thereof, and the other signal is the filtered signal or a signal linearly amplified without altering the shape thereof. The two signals obtained are then multiplied; the resultant signal is filtered in the frequency band [ΔFnar, (F1−F0)]; and the envelope of the signal obtained by filtration in the frequency band [ΔFnar, (F1−F0)] is separated in order to be subsequently demodulated and to give an information signal.

REFERENCES:
patent: 4947177 (1990-08-01), Fothergill
patent: 5596600 (1997-01-01), Dimos et al.
patent: 5717717 (1998-02-01), Yang et al.
patent: 5982825 (1999-11-01), Tsujimoto
patent: 6807405 (2004-10-01), Jagger et al.
patent: 7113476 (2006-09-01), Tulino
patent: 7133355 (2006-11-01), Gerakoulis
patent: 7158474 (2007-01-01), Gerakoulis
patent: 2002/0154620 (2002-10-01), Azenkot et al.
patent: 2002/0196765 (2002-12-01), Tulino
patent: 2003/0021237 (2003-01-01), Min et al.
patent: 0372369 (1990-06-01), None
patent: 2007872 (1994-02-01), None
patent: 2127021 (1999-02-01), None
patent: 1338078 (1987-09-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method for suppressing narrowband noise in a wideband... 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 for suppressing narrowband noise in a wideband..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for suppressing narrowband noise in a wideband... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3741149

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.