1. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Office 60 GHz Channel Measurements and Model] Date Submitted: [15 July 2006] Source: [T. Pollock, Z. Krusevac, S. Krusevac, A. Gupta] Company [National ICT Australia Limited] Address [Level 2, 216 Northbourne Ave, Canberra, ACT 2602, Australia] Voice:[+61 2 6125 3797], FAX: [+61 2 6230 6121], E-Mail:[tony.pollock@nicta.com.au] Source: [Hirokazu Sawada, Chang-Soon Choi, Yozo Shoji, Hiroyo Ogawa] Company [National Institute of Information and Communications Technology] Address [3-4, Hikarino-Oka, Yokosuka, Kanagawa, 239-0847, Japan] Voice:[+81.46.847.5096], FAX: [+81.46.847.5079], E-Mail:[sawahiro@nict.go.jp, shoji@nict.go.jp, hogawa@nict.go.jp] Re: [Response to the TG3c channel model subgroup call for channel models] Abstract:[Final analysis results of the NICT data for 60 GHz Office Channel Model] Purpose:[Contribution to 802.15 TG3c at July 2006 meeting in San Diego, USA ] 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.

2. doc.: IEEE 802.15-06-0316-00-003c 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

3. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 3 NICT AoA Channel Measurement ref: 15-06-0012-01 NLOS Office environment Polarization: Vertical Antenna height: 1.1m Antenna separation: 10m Tx antenna: always fixed (omni) Rx antenna: rotated from 0 to 360 degree in 5 degree steps (15 degree beam width)

4. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 4 Equipment Using Vector Network Analyzer HP8510C ParameterValueunit Center Frequency62.5GHz Bandwidth3GHz Time Resolution0.25ns Distance Resolution19.1cm No. Frequency points801 Frequency step3.75MHz Max excess delay266.7ns Times average128

5. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 5 Office Environment (NLOS) The cluttered (NLOS) office room (22m x 12.5m) is made of steel The floor and the ceiling are covered with carpet and plaster board, respectively Plate glass windows

6. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 6 Recall: Proposed Channel Model ref: 15-06-0103-01 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.

7. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 7 Recall: Model Parameters l cluster arrival rate l ray arrival rate cluster decay factor ray decay factor,, …multipath gain distribution factor(s) AoA distribution standard deviation

8. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 8 Summary of Signal Processing 1.Antenna pattern deconvolved from data 2.Clusters/rays identified (Lucy/CLEAN 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)

9. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 9 Summary of Parameters Extracted Office Environment ParameterValueunitDistribution Cluster arrival rate0.071/nsPoisson ray arrival rate1.881/nsPoisson Cluster decay factor19.44nsExponential Ray decay factor0.42nsExponential Cluster gain standard deviation1.82nsLognormal Ray gain standard deviation1.88nsLognormal AoA standard deviation9.10DegreesLaplacian RMS delay spread24.82ns Average number of clusters6 Uniform

10. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 10 Comments/Caveats Channel model developed to allow fair and timely comparisons between PHY proposals to 802.15.3c 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

11. doc.: IEEE 802.15-06-0316-00-003c Submission July, 2006 Tony Pollock, NICTASlide 11 References Details to date of modeling, measurements, and data extraction: 15-06-0221-00 15-06-0113-02 15-06-0103-02 15-06-0012-01 15-05-0412-00 15-05-0368-01