Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate
2006-04-25
2006-04-25
Nguyen, Simon (Department: 2685)
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
C455S226100, C375S340000
Reexamination Certificate
active
07035593
ABSTRACT:
Signal classification techniques for classifying signals occurring in a frequency band using a plurality of classifier procedures each dedicated to identify a particular signal or signal type. The classification procedures operate on spectrum activity data that may include pulse event data describing particular types of signal pulses occurring in the frequency band, power versus frequency data for sampling intervals of activity in a frequency band and/or raw analog-to-digital converter samples take of a received signal. The signal classification techniques are useful to identify wireless radio signals or other radio emissions occurring in an unlicensed radio frequency band. One type of classification procedure is a pulse timing template that is compared against accumulated signal pulse data to determine occurrence of a particular signal type. To enhance the pulse timing template signal classifier, techniques are provided to examine the center frequency distribution of signal pulses that match the timing template in order to confirm that certain signal pulses are associated with a particular frequency hopping signal type. This is particularly useful when the accumulated signal pulse data is obtained from a scanning radio receiver that is tuned to different portions/channels of the frequency band in which the frequency hopping signal is expected to hop.
REFERENCES:
patent: 3609553 (1971-09-01), Frazier et al.
patent: 3812291 (1974-05-01), Brodes et al.
patent: 4166980 (1979-09-01), Apostolos et al.
patent: 4271523 (1981-06-01), Gable
patent: 4501020 (1985-02-01), Wakeman
patent: 4597107 (1986-06-01), Ready et al.
patent: 4845707 (1989-07-01), Isaacson et al.
patent: 4947338 (1990-08-01), Vistica
patent: 4979211 (1990-12-01), Benvenuto et al.
patent: 5005210 (1991-04-01), Ferrell
patent: 5144642 (1992-09-01), Weinberg et al.
patent: 5210820 (1993-05-01), Kenyon
patent: 5353346 (1994-10-01), Cox et al.
patent: 5432862 (1995-07-01), Hirsch
patent: 5608727 (1997-03-01), Perreault et al.
patent: 5651030 (1997-07-01), Wong et al.
patent: 5687163 (1997-11-01), Fox et al.
patent: 5832038 (1998-11-01), Carsello
patent: 5905949 (1999-05-01), Hawkes et al.
patent: 5912922 (1999-06-01), Koszarsky et al.
patent: 6084919 (2000-07-01), Kleider et al.
patent: 6131013 (2000-10-01), Bergstrom et al.
patent: 6226680 (2001-05-01), Boucher et al.
patent: 6240282 (2001-05-01), Kleider et al.
patent: 6240372 (2001-05-01), Gross et al.
patent: 6263031 (2001-07-01), Beidas et al.
patent: 6385434 (2002-05-01), Chuprun et al.
patent: 6463294 (2002-10-01), Holma et al.
patent: 6466614 (2002-10-01), Smith
patent: 6519541 (2003-02-01), Bitton
patent: 6629151 (2003-09-01), Bahl
patent: 6697013 (2004-02-01), McFarland et al.
patent: 6714605 (2004-03-01), Sugar et al.
patent: 6850735 (2005-02-01), Sugar et al.
patent: 2001/0019543 (2001-09-01), Mueckenheim et al.
patent: 2002/0086641 (2002-07-01), Howard
patent: 2002/0137485 (2002-09-01), Nilsson et al.
patent: 2002/0142744 (2002-10-01), Okanoue et al.
patent: 2002/0154614 (2002-10-01), Jagger et al.
patent: 2002/0155811 (2002-10-01), Prismantas et al.
patent: 2002/0173272 (2002-11-01), Liang et al.
patent: 2003/0040277 (2003-02-01), Deats
patent: 2003/0050012 (2003-03-01), Black et al.
patent: 2003/0224741 (2003-12-01), Sugar et al.
patent: 2004/0023674 (2004-02-01), Miller et al.
patent: 2004/0219885 (2004-11-01), Sugar et al.
patent: 2260336 (2000-08-01), None
patent: 2298316 (2000-08-01), None
patent: 2000-022712 (2000-01-01), None
Agilent Publication, “Agilent 89400 Series Vector Signal Analyzer Product Overview,” 2000.
Agilent Publication, “Agilent Technologies: 2G & 3G Solutions-Accelerating Progress,” 2000.
Agilent Publication, “Agilent Technologies: Powerful Solutions To Complex Measurement Problems; Burst, Transient and Modulated Signal Analysis,” 2000.
Agilent Publication, “Agilent PN 89400-8 Using Vector Modulation Analysis In The Integration, Troubleshooting And Design Of Digital RF Communications Systems,” 2000 (and earlier).
Agilent Publication, “Agilent PN 89400-10 Time-Capture Capabilities Of The Agilent 89400 Series Vector Signal Analyzers,” 2000 (and earlier).
Agilent Publication, “Agilent 89440A-1 Frequency And Time-Selective Power Measurements With The Agilent 89410A and 89440A,” 2001 (and earlier).
Canadian Communications Research Center, “Spectrum Explorer Project Of Canadian Communications Research Center,” 1998 (and later).
Standford Research Systems, “Stanford Research Systems SR785 Two Channel Dynamic Signal Analyzer,” 1998.
Carlemalm, Catharina, “Suppression Of Multiple Narrowband Interferers In A Spread-Spectrum Communication System,” Aug., 2000, IEEE Journal on Selected Areas in Communications, Special Issue on Broadband Communications, vol. 18.
Lo, Victor Yeeman, “Enhanced Spectral Analysis Tool (SAT) For Radio Frequency Interference Analysis And Spectrum Management,” Milcom, 1998.
Tektronix, “Real-Time Spectrum Analysis Tools Aid Transition To Third-Generation Wireless Technology,” 1999.
Patenaude, Francois et al., “Spectrum Surveillance: System Architecture,” CRC-TN-97-001, Canadian Communications Research Centre, Apr. 15, 1997.
Mobilian Corporation, “WI-FI™ (802.11b) and BLUETOOTH™: an Examination of Coexistence Approaches,” Mobilian Corporation, 2001.
RSMS Publication, “Radio Spectrum Measurement System (RSMS) Program-Functional Measurements,” Jan. 29, 2001, 5 pages.
Schreyogg, Christoph et al., “Robust Classification Of Modulation Types Using Spectral Features Applied To HMM,” 1997, 5 pages.
Tektronix, “Validation Testing Of Bluetooth Wireless LAN Systems,” Tektronix Application Note, 2001.
Lallo, Pauli, “Signal Classification By Discrete Fourier Transform”, Milcom Conference Proceedings,1999.
Quint et al., “Emitter Detection And Tracking Algorithm For A Wide Band Multichannel Direction-Finding System In The HF Band,” Milcom Conference Procedings, 1999.
Dubuc et al., “An Automatic Modulation Recognition Algorithm For Spectrum Monitoring Applications,” ICC '99, Jun. 19, 1999.
Shull et al., “Modulation Classification By Wavelet Decomposition Entropy Analysis1,” ASME Press, vol. 10, Nov. 15-20, 2000.
Medav, Dr. Hans-Joachim Kolb, “Signal Processing and Neural Networks in Surveillance and Radio Monitoring,” Medav, 1993, 20 pgs.
Medav, “Medav OC-6040, PC-Based 4-channel Analyzer And Demodulator For Narrowband COMINT Signals With Automatic Signal Recognition,” publication date unknown, 8 pgs.
BBN Technologies, “Using Signal Processing to Analyze Wireless Data Traffic,” May 22, 2002, BBN Technical Memorandum No. 1321, prepared for DARPA.
Medav, Dr. Hans-Joachim Kolb “Short Time Spectral Analysis of Audio Signals on a PC,” unknown publication date, 6 pgs.
Aglient Technologies, “Verifying Bluetooth™ Baseband Signals Using Mixed-Signal Oscilloscopes,” 2001, Application Note 1333-3.
Medav, “Astrid: Analysis System for Telecom Signals, Recognition, Interception and Demodulation of VHF/UHF Radio Signals from 0 to 2 GHz,” 2000, 8 pgs.
Gregory P. Noone, “A Neural Approach to Automatic Pulse Repetition Interval Modulation Recognition,” 1999, Procedings of Information Decision and Control.
Nolan et al., “Modulation Scheme Recognition Techniques for Software Radio on a General Purpose Platform,” unknown publication date, Networks and Telecommunications Research Group, Trinity College.
Medav, “Astrid++: Analysis, Monitoring, Recording and Multi-Channel Direction Finding of Wideband Radio Signals,” 2000.
Taira et al., “Automatic Classification of Analogue Modulation Signals by Statistical Parameters,” 1999, Milcom Conference Procedings.
Bart Rice et al., “Tutorial -C: Automatic Signal Classification
Mason David F.
Miller Karl A.
Cognio, Inc.
Edell Shapiro & Finnan LLC
Nguyen Simon
LandOfFree
Signal classification methods for scanning receiver and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Signal classification methods for scanning receiver and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal classification methods for scanning receiver and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3573618