Localization of narrowband signals

Details Localization of narrowband signals Localization of narrowband signals

2007-06-12

2007-06-12

Nguyen, Duc M. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Responsive to an input signal of particular predetermined...

C455S266000, C455S450000, C455S452200, C455S227000

Reexamination Certificate

active

10889302

ABSTRACT:
The invention relates to detecting a narrowband signals from received signals. According to the different aspects of the invention, a sample set is first formed from received signals, whereby elements of the sample set represent their absolute values, and a lower reference value and an upper reference value are determined. Then adjacent samples exceeding the lower reference value are grouped in the same cluster. The purpose of the clustering is to group signals possibly originating from the same source together. Then, if at least one of these clustered samples exceeds also the upper reference value, it is most probable that the cluster is caused by a narrowband signal. The order of the determination steps can be varied according to the different aspects of the invention.

REFERENCES:
patent: 5574459 (1996-11-01), Burgay et al.
patent: 6295444 (2001-09-01), Morande et al.
patent: 7076220 (2006-07-01), Backes et al.
patent: 7155230 (2006-12-01), Tsien
patent: 2002/0068536 (2002-06-01), David et al.
patent: 2002/0181417 (2002-12-01), Malhotra et al.
patent: 2004/0037307 (2004-02-01), Henttu et al.
patent: 2006/0062184 (2006-03-01), Saarnisaari et al.
patent: 0 560 475 (1993-09-01), None
patent: WO 2004 006450 (2004-01-01), None
Henttu P. and Aromaa S. (2002) “Consecutive Mean Excision Algorithm”, Proceedings of IEEE International Symposium on Spread Spectrum Techniques and Applications, vol. 2, pp. 450-454.
Saarnisaari H. and Henttu P. (2003) “Impulse detection and rejection methods for radio systems”, Proceedings of IEEE Military communications conference MILCOM 2003, Boston, MA USA.

Affiliated with

Also associated with

Rating

Localization of narrowband signals does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Localization of narrowband signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Localization of narrowband signals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3828012