Telecommunications – Receiver or analog modulated signal frequency converter – Convertible to different type
Reexamination Certificate
2005-06-07
2005-06-07
Maung, Nay (Department: 2684)
Telecommunications
Receiver or analog modulated signal frequency converter
Convertible to different type
C455S143000, C455S067110, C455S150100, C455S226100, C375S227000, C375S228000, C324S076110, C324S076190
Reexamination Certificate
active
06904269
ABSTRACT:
A method of identifying a signal type uses parameters of the signal as a basis for automatic identification. A signal of interest is selected from a display of a spectral waveform for a specified frequency. An occupied bandwidth for the signal of interest is estimated and, if the occupied bandwidth is common to more than one known signal type, a complementary cumulative distribution function of peak power for the signal of interest is estimated. The signal type may be identified as a function of these parameters. Additionally the frequency of the signal of interest may be compared with a database of spectral assignments for known signal types to provide further information about the signal of interest.
REFERENCES:
patent: 4085367 (1978-04-01), Williams et al.
patent: 4166980 (1979-09-01), Apostolos et al.
patent: 4305159 (1981-12-01), Stromswold
patent: 4501020 (1985-02-01), Wakeman
patent: 4859933 (1989-08-01), Taylor et al.
patent: 4862506 (1989-08-01), Landgarten et al.
patent: 4890099 (1989-12-01), Takano
patent: 5381150 (1995-01-01), Hawkins
patent: 5530454 (1996-06-01), Etheridge et al.
patent: 5959607 (1999-09-01), Montijo
patent: 6104922 (2000-08-01), Baumann
patent: 6140809 (2000-10-01), Doi
patent: 6212229 (2001-04-01), Salinger
patent: 6690746 (2004-02-01), Sills et al.
patent: 2001/0036151 (2001-11-01), Cimini, Jr. et al.
patent: 2002/0101936 (2002-08-01), Wright et al.
patent: 199 10 902 (1999-10-01), None
patent: 1 161 043 (2001-05-01), None
patent: 2 234 077 (1991-01-01), None
patent: 02002064444 (2002-02-01), None
“Estimation of Error Vector Magnitude Using Two-Tone Intermodulation Distortion Measurements” by Hyunchul Ku IEEE 2001 0-7803-6538-0/01.
“The Use of Interleaving to Reduce the Peak-to-Average Power ratio of an OFDM Signal” by A.D.S. Jayalath IEEE 2000 0-7803-6451-1/00.
Liedtke F. F., “Computer Simulation Of An Automatic Classification Procedure For Digitally Modulated Communication Signals With Known Parameters.”, Signals Processing, Amsterdam, NL vol. 6, 1984, pp. 311-323, XP000602823, ISSN: 0165-1684.
Callaghan T.G. et al, “Sampling and Algorithms Aid Modulation Recognition”, Microwaves and RF, Penton Publishing, Hasbrouck Heights, NJ, US vol. 24, No. 9, Sep. 1985, pp. 117-119, 121, XP000763996, ISSN: 0745-2993.
Hipp, J. E., “Modulation Classification Based On Statistical Moments”, Proceedings Of The Military Communications Conference. (Milcom) Monterey, Oct. 5-9, 1986, New York IEEE, US vol. 2, Oct. 1, 1986 pp. 20201-20206, XP000795181.
Deshpande Nikhil
Engholm Kathryn A.
Hill Thomas C.
Jenkins R. Eben
Gray Francis I.
Maung Nay
Orgad Edan
Tektronix Inc.
LandOfFree
Signal type identification 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 type identification, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Signal type identification will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3507657