1. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
March, 2006
Project: IEEE P Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [NICTA Indoor 60 GHz Channel Measurements and Analysis update]
Date Submitted: [7 March 2006]
Source: [C. Liu, E. Skafidas, T. Pollock, Z. Krusevac, S. Krusevac, A. Gupta, D. Miniutti]
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: [Analysis of the NICTA data for proposed 60 GHz Channel Model ref ]
Purpose: [Contribution to TG3c at March 2006 meeting in Denver, 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
Tony Pollock, NICTA
Tony Pollock, NICTA

2. doc.: IEEE 802.15-<doc#>
<month year>
doc.: IEEE <doc#>
March, 2006
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
Tony Pollock, NICTA
Tony Pollock, NICTA

3. Recall: Proposed Channel Model ref: 15-06-0103-00
March, 2006
Recall: Proposed Channel Model ref:
S-V Model with AoA extension
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.
Tony Pollock, NICTA

4. Recall: Model Parameters
March, 2006
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
Tony Pollock, NICTA

5. NICTA AoA Channel Measurements ref: 15-05-0412-00
March, 2006
NICTA AoA Channel Measurements ref:
LOS Office environments
desktops, corridors, typical office, typical open office, board room
Polarization: Vertical
Antenna separation: 2 – 8m
Tx antenna: always fixed (omni)
Rx antenna: rotated from 0 to 360 degree in 4 degree steps (<5 degree beam width)
Tony Pollock, NICTA

6. Equipment Using Vector Network Analyzer Center frequency 60 GHz
March, 2006
Equipment
Using Vector Network Analyzer
Center frequency
60 GHz
Bandwidth
10 GHz
Time resolution
0.05 ns
Distance resolution
15 mm
No. frequency points
400
Frequency step
25 MHz
Times of average 5
Tony Pollock, NICTA

7. Typical Desktop medium, large sized office and cubicle
March, 2006
Typical Desktop Tx Rx
medium, large sized office and cubicle
Typical desktop clutter
Glass windows
Concrete walls, wooden door
Tony Pollock, NICTA

8. Single Directional Channel Model
March, 2006
Single Directional Channel Model
deconvolve Rx antenna pattern from measured data
Solution to a large set of linear simultaneous equations
Tony Pollock, NICTA

9. Cluster Identification - KDE
March, 2006
Cluster Identification - KDE
As measurements have very small time resolution need good cluster identification and MPC procedures
Kernel Density Estimation
Non parametric density estimation procedure
2D Gaussian KDE technique applied
Clusters highlighted for visual MPC extraction
Tony Pollock, NICTA

10. March, 2006
Desktop – Cubicle ns
angle
Tony Pollock, NICTA

11. Desktop - Medium Office
March, 2006
Desktop - Medium Office ns
angle
Tony Pollock, NICTA

12. March, 2006
Desktop - Large Office ns
angle
Tony Pollock, NICTA

13. March, 2006
Desktop - Board Room ns
angle
Tony Pollock, NICTA

14. Preliminary Desktop Parameters
March, 2006
Preliminary Desktop Parameters
Due to large amounts of data (extremely small time resolution) parameter extraction is taking longer than expected
Some preliminary results (identical methods to NICT analysis)
Tony Pollock, NICTA

15. Preliminary Desktop Parameters
March, 2006
Preliminary Desktop Parameters
identical methods to NICT analysis ( )
3.06
3.52
2.95
3.74
Mean excess delay spread [ns]
1.21
2.12
1.54
2.06
RMS delay spread
[ns] 6
8.6
0.0539
2.025
0.3226
20.48
Board
19.47
0.053
1.625
1.136
4.166
Sm.Off. 11
8.99
0.057
0.554
3.225
4.35
Lg.Off. 8
11.32
0.054
0.606
1.1905
3.770
Number of clusters
[deg]
Cubicle
Loc.
1/
1/
Tony Pollock, NICTA

16. Remaining Work Improve Cluster and MPC selection
March, 2006
Remaining Work
Improve Cluster and MPC selection
Extract parameters for all environments
Determine distributions for all environments
Determine time and angle correlation
Generate model realization technique
Timeline: completed before Jacksonville meeting (May)
Tony Pollock, NICTA