July, 2006

Tony Pollock, NICTASlide 1

doc.: IEEE 802.15-06-0318-00-003c

Submission

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: [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:[+61 2 6125 3797], FAX: [+61 2 6230 6121], E-Mail:[tony.pollock@nicta.com.au]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 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.

July, 2006

Tony Pollock, NICTASlide 2

doc.: IEEE 802.15-06-0318-00-003c

Submission

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

July, 2006

Tony Pollock, NICTASlide 3

doc.: IEEE 802.15-06-0318-00-003c

Submission

NICTA AoA Channel Measurementref: 15-05-0412-00

• 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)

July, 2006

Tony Pollock, NICTASlide 4

doc.: IEEE 802.15-06-0318-00-003c

Submission

EquipmentUsing Vector Network Analyzer

Parameter Value unit

Center Frequency 60 GHz

Bandwidth 10 GHz

Time Resolution 0.05 ns

Distance Resolution 15 mm

No. Frequency points 401  

Frequency step 25 MHz

Times average 5

July, 2006

Tony Pollock, NICTASlide 5

doc.: IEEE 802.15-06-0318-00-003c

Submission

Desktop Results

• 7 Desktop Locations (medium, large sized office and cubicle)

• Typical desktop clutter• Glass windows• Concrete walls, wooden door

Tx Location

Rx Location

July, 2006

Tony Pollock, NICTASlide 6

doc.: IEEE 802.15-06-0318-00-003c

Submission

Recall: Proposed Channel Modelref: 15-06-0103-01

S-V Model with AoA extension

11

, , ,0 0

( , ) ( ) ( )lKL

k l l k l l k ll k

h t t T

L = number of clusters;Kl = 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;Tl = 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, Tl;

= mean angle of arrival of l-th cluster; = angle of arrival of the k-th ray within the l-th cluster.

,k l

l,k l

July, 2006

Tony Pollock, NICTASlide 7

doc.: IEEE 802.15-06-0318-00-003c

Submission

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

1 2

July, 2006

Tony Pollock, NICTASlide 8

doc.: IEEE 802.15-06-0318-00-003c

Submission

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)

July, 2006

Tony Pollock, NICTASlide 9

doc.: IEEE 802.15-06-0318-00-003c

Submission

Summary of Parameters ExtractedDesktop Environment

Parameter Value unit Distribution

Cluster arrival rate 1.72 1/ns Poisson

ray arrival rate 3.14 1/ns Poisson

Cluster decay factor 4.01 ns Exponential

Ray decay factor 0.58 ns Exponential

Cluster gain standard deviation 2.70 ns Lognormal

Ray gain standard deviation 1.90 ns Lognormal

AoA standard deviation 14.38 degrees Normal

RMS delay spread 2.27 ns

Average number of clusters 14 Uniform

July, 2006

Tony Pollock, NICTASlide 10

doc.: IEEE 802.15-06-0318-00-003c

Submission

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

July, 2006

Tony Pollock, NICTASlide 11

doc.: IEEE 802.15-06-0318-00-003c

Submission

References

Details of modeling, measurements, and data extraction:

• 15-06-0222-00• 15-06-0112-00• 15-06-0103-02• 15-05-0689-00• 15-05-0412-00• 15-05-0368-01