doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 1 Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Residential 60 GHz Channel Measurements and Model] Date Submitted: [15 July 2006] Source: [C. Liu, E. Skafidas, T. Pollock, R. Evans] Company [National ICT Australia Limited] Address [Level 2, 216 Northbourne Ave, Canberra, ACT 2602, Australia] Voice:[ ], FAX: [ ], Re: [Response to the TG3c channel model subgroup call for channel models] Abstract:[Final analysis results of the NICTA data for 60 GHz Desktop Channel Model] Purpose:[Contribution to TG3c at July 2006 meeting in San Diego, USA ] Notice:This document has been prepared to assist the IEEE P 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 P

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 2 Purpose Channel model sub-committee requires a common channel model for evaluation of PHY layer proposals Bulk of proposed applications require directional antennas Committee needs a model with AoA Require a measurement campaign to: Determine an appropriate channel model with AoA Determine the set of parameters that accurately describes the 60 GHz channel for indoor situations

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 3 NICTA AoA Channel Measurement ref: LOS Desktop environment Polarization: Vertical Antenna height: 0.1m Antenna separation: 2m Tx antenna: always fixed (omni) Rx antenna: rotated from 0 to 360 degree in 4 degree steps (<5 degree beam width)

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 4 Equipment Using Vector Network Analyzer ParameterValueunit Center Frequency60GHz Bandwidth10GHz Time Resolution0.05ns Distance Resolution15mm No. Frequency points401 Frequency step25MHz Times average5

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 5 Desktop Results 7 Desktop Locations (medium, large sized office and cubicle) Typical desktop clutter Glass windows Concrete walls, wooden door Tx Location Rx Location

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 6 Recall: Proposed Channel Model ref: S-V Model with AoA extension L = number of clusters; K l = number of multipath components (number of rays) in the l-th cluster; = multipath gain coefficient of the k-th ray in the l-th cluster; T l = arrival time of the first ray of the l-th cluster;  k,l = delay of the k-th ray within the l-th cluster relative to the first path arrival time, T l ; = mean angle of arrival of l-th cluster; = angle of arrival of the k-th ray within the l-th cluster.

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 7 Recall: Model Parameters l l cluster arrival rate l ray arrival rate cluster decay factor ray decay factor,, …multipath gain distribution factor(s) AoA distribution standard deviation

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 8 Summary of Signal Processing 1.Antenna pattern deconvolved from data 2.Clusters/rays identified (KDE algorithm) 3.Linear Regression used to extract decay constants 4.Distribution fitting used to extract arrival rates 5.Goodness of fit and distribution fitting used to determine distributions (95% confidence)

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 9 Summary of Parameters Extracted Desktop Environment ParameterValueunitDistribution Cluster arrival rate1.721/nsPoisson ray arrival rate3.141/nsPoisson Cluster decay factor4.01nsExponential Ray decay factor0.58nsExponential Cluster gain standard deviation2.70nsLognormal Ray gain standard deviation1.90nsLognormal AoA standard deviation14.38degreesNormal RMS delay spread2.27ns Average number of clusters14 Uniform

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 10 Comments/Caveats Channel model developed to allow fair and timely comparisons between PHY proposals to c Gives a general understanding of the 60 GHz channel and its potential for WPAN applications Given time and resource constraints a generalised stochastic channel model was not possible (although desirable) Further modelling work is required to generate complete understanding of 60 GHz channels

doc.: IEEE c Submission July, 2006 Tony Pollock, NICTASlide 11 References Details of modeling, measurements, and data extraction: