1. doc.: IEEE 802.22-07-0143-00-0000 Submission March 2007 Kyutae Lim, GEDCSlide 1 Simulation on Performance of Multi Resolution Spectrum Sensing (MRSS) Section 11.3.2.2 in IEEE P802.22/D0.2 Draft Standard for WRAN Authors: Notice: This document has been prepared to assist IEEE 802.22. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.22. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures http://standards.ieee.org/guides/bylaws/sb-bylaws.pdf including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the Working Group of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chairhttp://standards.ieee.org/guides/bylaws/sb-bylaws.pdf Carl R. StevensonCarl R. Stevenson as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.22 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at patcom@iee.org.patcom@iee.org This document provides simulation results for the proposed spectrum sensing scheme in Section 11.3.2.2. This document provides recommended remedy for comment CID #164. NameCompanyAddressPhoneemail Kyutae LimGeorgia Institute of TechnologyUSA+1-404-385-6008ktlim @ece.gatech.edu Joy LaskarGeorgia Institute of TechnologyUSA404-385-6008joy.laksar@ece.gatech.edu Jongmin ParkGeorgia Institute of TechnologyUSA+1-404-385-6008jmpark @ece.gatech.edu Jeong Suk LeeSamsung Electro-MechanicsKorea+82-31-210-3217js0305.lee@samsung.com Chang Ho LeeSamsung Electro-MechanicsKorea+82-31-210-3217changholee@samsung.com Haksun KimSamsung Electro-MechanicsKorea+82-31-210-3217hskim@samsung.com Seongsoo LeeSamsung Electro-MechanicsKorea+82-31-210-3217sslee.rf@samsung.com Kihong KimSamsung Electro-MechanicsKorea+82-31-210-3217kh607.kim@samsung.com

2. doc.: IEEE 802.22-07-0143-00-0000 Submission MRSS System Architecture

3. doc.: IEEE 802.22-07-0143-00-0000 Submission MRSS Performance : Scalable Resolution Input Signals Modul- ationBandwidth Carrier Freq.PowerRemark FM200 KHz170 MHz- 65 dBm Wireless Mic. OFDM7 MHz333 MHz- 37 dBmDVB-T 8-VSB6 MHz600 MHz- 58 dBmATSC Simulation Parameters Sparse MRSSPrecise MRSS VCO Span50 ~ 850 MHz f sweep 20 MHz2 MHz BwBw 20 MHz2 MHz T total 2.05 μsec200.5 μsec RF Signal Spectrum Sparse MRSS Precise MRSS

4. doc.: IEEE 802.22-07-0143-00-0000 Submission March 2007 Kyutae Lim, GEDCSlide 4 Noise Distribution (1) The envelope voltage of white Gaussian Noise –Linear-domain processing: Rayleigh Distribution –Log-domain processing: Log-compressed Rayleigh Distribution

5. doc.: IEEE 802.22-07-0143-00-0000 Submission March 2007 Kyutae Lim, GEDCSlide 5 Noise Distribution (2) Averaging of log-domain processing by N AVG

6. doc.: IEEE 802.22-07-0143-00-0000 Submission March 2007 Kyutae Lim, GEDCSlide 6 Window Highest Sidelobe (dBc ) Equiv. Noise BW (*f w ) 3-dB BW (*f w ) 6-dB BW (*f w ) -231.231.201.65 -321.501.442.00 -391.731.662.32 -471.941.862.59

7. doc.: IEEE 802.22-07-0143-00-0000 Submission March 2007 Kyutae Lim, GEDCSlide 7 Noise Distribution (3) Detected Noise with window Case 1: f w = 100 kHz, N AVG = 1 Case 2: f w = 100 kHz, N AVG = 10 Case 3: f w = 1 MHz, N AVG = 10

8. doc.: IEEE 802.22-07-0143-00-0000 Submission March 2007 Kyutae Lim, GEDCSlide 8 Sensing Threshold Level With the noise PDF, find the point when CDF = 1 – P FA –With P FA = 0.1, Theoretical Value from (20) SimulationError (dB) (dBm)All-113.63-113.62-0.01 (dB) 1 10 100 1000 5.57 1.76 0.57 0.18 5.55 1.74 0.54 0.17 -0.02 -0.03 -0.01 (dBm) 1 10 100 1000 -107.50 -111.69 -113.02 -113.44 -107.40 -111.40 -112.80 -113.40 0.10 0.29 0.22 0.04 window, f w = 100 kHz, P FA = 0.1

9. doc.: IEEE 802.22-07-0143-00-0000 Submission March 2007 Kyutae Lim, GEDCSlide 9 Probability of Misdetection, P MD Continuous WaveATSC (8-VSB)

10. doc.: IEEE 802.22-07-0143-00-0000 Submission March 2007 Kyutae Lim, GEDCSlide 10 Phase Noise Effect on the Threshold Level window of f w = 100 kHz with 600-MHz modulation Case 1: No Phase noise Case 2: Phase noise of -80 dBc/Hz at 20 kHz, -150 dBc/Hz at 6 MHz and -170 dBc/Hz at 60 MHz Case 3: Phase noise of -80 dBc/Hz at 20 kHz, -140 dBc/Hz at 6 MHz and -160 dBc/Hz at 60 MHz

11. doc.: IEEE 802.22-07-0143-00-0000 Submission March 2007 Kyutae Lim, GEDCSlide 11 References 1.http://www.ieee802.org/22/Meeting_documents/2006_Sept/22-06-0028-10-0000- Spectrum-Sensing-Simulation-Model.dochttp://www.ieee802.org/22/Meeting_documents/2006_Sept/22-06-0028-10-0000- Spectrum-Sensing-Simulation-Model.doc 2.F. J. Harris, “On the Use of Windows for Harmonic Analysis with the Discrete Fourier Transform,” Proceedings of the IEEE, vol. 66, No. 1, Jan 1978 3.Agilent Application Note (AN) 1303, “Spectrum Analyzer Measurements and Noise” 4.D. Kaplan and Q Ma, “On the statistical characteristics of log-compressed Rayleigh signals: Theoretical formulation and experimental results,” Journal of the Acoustical Society of America, Vol. 95, Iss. 3, pp. 1396-1400, Mar 1994