Beacon Detection with VHF Assumptions Month Year doc.: IEEE 802.22-yy/xxxxr0 April 2008 Beacon Detection with VHF Assumptions IEEE P802.22 Wireless RANs Date: 2008-04-09 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 Chair Carl 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. > Stephen Kuffner, Motorola John Doe, Some Company

Month Year doc.: IEEE 802.22-yy/xxxxr0 April 2008 Abstract In [1], the beacon packet error rates for MSF1 and MSF2 in AWGN and WRAN-B were presented and related to link margin using UHF assumptions. One of the action items from the March 2008 Plenary Session was to present the results using VHF assumptions. This submission presents those VHF results. Stephen Kuffner, Motorola John Doe, Some Company

April 2008 Stephen Kuffner, Motorola

VHF Link Margin Considerations April 2008 VHF Link Margin Considerations Express required chip SNR in terms of interference link and sensing link parameters [2] Assumptions for UHF case from [1] Beacon power = 250 mW (UHF specific) Beacon Tx antenna gain = 2 dBi (UHF or VHF) Microphone Rx antenna gain = 2 dBi (UHF) Interference upfade = 2.5 dB (UHF or VHF) ΔNF = 0 dB (UHF and VHF) I/Nmax = 0 dB (UHF and VHF) Antenna height difference (UHF specific) 16.8 dB rural 10m – 1.5m, P.1546 2.7 dB Hata large city 3m to 1.5m Stephen Kuffner, Motorola

Specific VHF Assumptions April 2008 Specific VHF Assumptions Beacon Tx power = 50 mW Microphone Rx antenna gain = -6.5 dBi This value was what we were advised to use at the March 2007 Plenary session and appears in [3] Antenna height difference 14.4 dB rural 10m – 1.5m P.1546 2.5 dB Hata large city 3m – 1.5m Stephen Kuffner, Motorola

April 2008 Link Margin Equation Antenna-height related path loss clutter parameter Δ P.1546 rural VHF -0.395 + 14.4 + 8.5 – 2.5 – 0 + 0 = 20.05 dB Modulation & coding has to deliver acceptable PER performance for less than 20 dB Ec/No WRAN-B: < 0.1% for MSF1 and about 0.5% for MSF2 Hata large city VHF -0.395 + 2.5 + 8.5 – 2.5 – 0 + 0 = 8.1 dB Have to deliver PER for Ec/No < 8.1 dB WRAN-B: about 1.9% for MSF1 and 14% for MSF2 Corresponding UHF numbers from [1] were 3% and 18.8% Stephen Kuffner, Motorola

Conclusions TG1 Packet UHF [1] VHF MSF1 3% 1.9% MSF2 18.8% 14% April 2008 Conclusions TG1 Packet UHF [1] VHF MSF1 3% 1.9% MSF2 18.8% 14% Stephen Kuffner, Motorola

April 2008 References [1] IEEE 802.22-08/0104r0, “IEEE 802.22.1 Packet Error Rates for MSF1 and MSF2,” S. Kuffner, March 2008 [2] IEEE 802.22-08/0059r0, “Beacon Link Margin by Two Methods,” S. Kuffner, February 2008 [3] IEEE 802.22-07/0148r0, “TG1 Link Margin Calculator,” S. Kuffner, March 2007 Stephen Kuffner, Motorola