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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Average Power Decay Profiles for a Set of Measurement Data Date Submitted: 12 September, 2002 Source: Marcus Pendergrass, Time Domain Corporation

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: Average Power Decay Profiles for a Set of Measurement Data Date Submitted: 12 September, 2002 Source: Marcus Pendergrass, Time Domain Corporation 7057 Old Madison Pike, Huntsville, AL 35806 Voice:256-428-6344 FAX: [256-922-0387], E-Mail: Marcus.Pendergrass@timedomain.com Re: Ultra-wideband Channel Models IEEE P802.15-02/208r0-SG3a, 17 April, 2002, Abstract: Average power decay profiles for a set of measurement data are presented. Purpose: The information provided in this document is for consideration in the selection of a UWB channel model to be used for evaluating the performance of a high rate UWB PHY for WPANs. Notice: This document has been prepared to assist the IEEE P802.15. 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 acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Marcus Pendergrass Time Domain Corporation (TDC) Slide 1

  2. Average Power Decay Profiles for a Set of Measurement Data • 12 September 2002 • Marcus Pendergrass • marcus.pendergrass@timedomain.com References Channel model submission, July 2002, Vancouver BC http://grouper.ieee.org/groups/802/15/pub/2002/Jul02/02240r1p802-15_SG3a-Empirically_Based_UWB_Channel_Model.ppt Channel model presentation, July 2002, Vancouver BC http://grouper.ieee.org/groups/802/15/pub/2002/Jul02/02294r0p802-15_SG3a-Empirically_Based_Statistical_Ultra-Wideband_Channel_Model.ppt Marcus Pendergrass Time Domain Corporation (TDC) Slide 2

  3. Mean of Log Relative Magnitude comparison across scenarios NLOS Some didn’t like these units at the Vancouver meeting Case I: 4 – 10 m See the notes page to this slide for linear fits to these graphs NLOS LOS Case II: Case III: 0 – 4 m 0 – 4 m Marcus Pendergrass Time Domain Corporation (TDC) Slide 3

  4. Average Power Decay Profile (as a function of excess delay t ) What I plotted in my presentation What I think people wanted to see Conversion from Mean of Log Relative Magnitude to APDP in dB The conversion: Marcus Pendergrass Time Domain Corporation (TDC) Slide 4

  5. Linear Fits to APDP (dB) The equations below give linear fits to the graphs on the slide 1, after the conversion to dB has been made Case I: NLOS, 0-4 meters Piecewise Linear fit to APDP: z(t) = -0.085 t - 9.410 if t > 5 z(t) = -0.587 t - 7.373 if 0 < t < 5 Case II: LOS, 0-4 meters Piecewise Linear fit to APDP: z(t) = -0.092 t - 12.536 if t > 8 z(t) = -1.884 t - 5.781 if 0 < t < 8 Case III: NLOS, 4-10 meters Linear fit to APDP: z(t) = -0.085 t - 10.279 Marcus Pendergrass Time Domain Corporation (TDC) Slide 5

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