Title:
METHOD AND APPARATUS FOR SPECTRAL SENSING
Document Type and Number:
WIPO Patent Application WO/2011/091405
Kind Code:
A3
Abstract:
An apparatus for wireless communication includes a processing system. The processing system is configured to estimate a power spectral density of a first signal. In addition, the processing system is configured to determine a normalized correlation detector between the estimated power spectral density and a known power spectral density of a second signal. Furthermore, the processing system is configured to determine whether the first signal contains the second signal based on the normalized correlation detector.
Inventors:
QUAN ZHI (US)
SHELLHAMMER STEPHEN J (US)
ZHANG WENYI (US)
SHELLHAMMER STEPHEN J (US)
ZHANG WENYI (US)
Application Number:
PCT/US2011/022372
Publication Date:
November 03, 2011
Filing Date:
January 25, 2011
Export Citation:
Assignee:
QUALCOMM INC (US)
QUAN ZHI (US)
SHELLHAMMER STEPHEN J (US)
ZHANG WENYI (US)
QUAN ZHI (US)
SHELLHAMMER STEPHEN J (US)
ZHANG WENYI (US)
International Classes:
H04L27/00
Other References:
SHELLHAMMER S J: "Spectrum sensing in IEEE802.22", INTERNET CITATION, 9 June 2008 (2008-06-09), pages 1 - 6, XP002557132, Retrieved from the Internet [retrieved on 20091123]
GOK A ET AL: "Estimating the number of frequency hopping interferers using spectral sensing with time and frequency offset measurements", MILITARY COMMUNICATIONS CONFERENCE, 2009. MILCOM 2009. IEEE, IEEE, PISCATAWAY, NJ, USA, 18 October 2009 (2009-10-18), pages 1 - 7, XP031609553, ISBN: 978-1-4244-5238-5
WILLIAM C SUSKI II ET AL: "Using Spectral Fingerprints to Improve Wireless Network Security", GLOBAL TELECOMMUNICATIONS CONFERENCE, 2008. IEEE GLOBECOM 2008. IEEE, IEEE, PISCATAWAY, NJ, USA, 30 November 2008 (2008-11-30), pages 1 - 5, XP031370104, ISBN: 978-1-4244-2324-8
ZHI QUAN ET AL: "Spectrum Sensing by Cognitive Radios at Very Low SNR", GLOBAL TELECOMMUNICATIONS CONFERENCE, 2009. GLOBECOM 2009. IEEE, IEEE, PISCATAWAY, NJ, USA, 30 November 2009 (2009-11-30), pages 1 - 6, XP031646424, ISBN: 978-1-4244-4148-8
CABRIC D ET AL: "Implementation issues in spectrum sensing for cognitive radios", SIGNALS, SYSTEMS AND COMPUTERS, 2004. CONFERENCE RECORD OF THE THIRTY- EIGHTH ASILOMAR CONFERENCE ON PACIFIC GROVE, CA, USA NOV. 7-10, 2004, PISCATAWAY, NJ, USA,IEEE, vol. 1, 7 November 2004 (2004-11-07), pages 772 - 776, XP010781056, ISBN: 978-0-7803-8622-8, DOI: DOI:10.1109/ACSSC.2004.1399240
GOK A ET AL: "Estimating the number of frequency hopping interferers using spectral sensing with time and frequency offset measurements", MILITARY COMMUNICATIONS CONFERENCE, 2009. MILCOM 2009. IEEE, IEEE, PISCATAWAY, NJ, USA, 18 October 2009 (2009-10-18), pages 1 - 7, XP031609553, ISBN: 978-1-4244-5238-5
WILLIAM C SUSKI II ET AL: "Using Spectral Fingerprints to Improve Wireless Network Security", GLOBAL TELECOMMUNICATIONS CONFERENCE, 2008. IEEE GLOBECOM 2008. IEEE, IEEE, PISCATAWAY, NJ, USA, 30 November 2008 (2008-11-30), pages 1 - 5, XP031370104, ISBN: 978-1-4244-2324-8
ZHI QUAN ET AL: "Spectrum Sensing by Cognitive Radios at Very Low SNR", GLOBAL TELECOMMUNICATIONS CONFERENCE, 2009. GLOBECOM 2009. IEEE, IEEE, PISCATAWAY, NJ, USA, 30 November 2009 (2009-11-30), pages 1 - 6, XP031646424, ISBN: 978-1-4244-4148-8
CABRIC D ET AL: "Implementation issues in spectrum sensing for cognitive radios", SIGNALS, SYSTEMS AND COMPUTERS, 2004. CONFERENCE RECORD OF THE THIRTY- EIGHTH ASILOMAR CONFERENCE ON PACIFIC GROVE, CA, USA NOV. 7-10, 2004, PISCATAWAY, NJ, USA,IEEE, vol. 1, 7 November 2004 (2004-11-07), pages 772 - 776, XP010781056, ISBN: 978-0-7803-8622-8, DOI: DOI:10.1109/ACSSC.2004.1399240
Attorney, Agent or Firm:
JACOBS, Jeffrey D. (5775 Morehouse DriveSan Diego, California, US)
Download PDF:
Previous Patent: HEAT TRANSFER COMPOSITION OF OXYGENATED LUBRICANT WITH HYDROFLUOROOLEFIN AND HYDROCHLOROFLUOROOLEFIN...
Next Patent: IMPROVED DRAPE
Next Patent: IMPROVED DRAPE