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January,
2006
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs)
Submission Title: [Desktop Channel Measurements and Models]
Date Submitted: [18 January, 2006]
Source: [C. Liu, E. Skafidas, T. Pollock, K. Saleem] Company [NICTA]
Address [Dept of Electrical and Electronic Engineering, University of Melbourne, Parkville Victoria 3010]
Voice:[+61 3 8344 8407], E-Mail: [[email protected]]
Re: []
Abstract: [Overview of Channel Measurements and Channel Model for 60GHz Desktop Channel]
Purpose: [Contribution for 802.15.3c Task group ]
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.
Submission
Slide 1
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Introduction
• Numerous desktop measurement made
• Measurements were made at different times
and location on the same and different
desktops
• The Saleh-Valenuela (S-V) model is used to
model the desktop environment.
• Key S-V model parameters such as Cluster
Decay Factor, Ray Decay Factor, Cluster
Arrival Rate, and Ray Arrival Rate are
extracted from the measured data.
Submission
Slide 2
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Measurement Setup
• An Anritsu 37397 Vector Network Analyzer (VNA)
was used to measure the channel transfer function.
• The outputs of the amplifiers where connected to the
antennas used in the experiment.
• The two antennas were mounted on tracks and the
directional receive antenna was attached to an
electronically steerable platform that permitted the
angle of the antenna to be precisely and
automatically controlled
• In this setup the VNA was set to sweep between 5565GHz with a frequency step of 6.25MHz for 1601
data points.
Submission
Slide 3
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Measurement Setup
• An omni-directional antenna is employed at the transmitting side
• A 21dBi directional pyramidal horn antenna at the receiving side.
• The antennae voltage standing wave ratios were better than
1.5:1 over the entire frequency of interest.
• The antennae were mounted on rails that permit the precise and
automatic positioning required at 60 GHz (5mm wavelength).
• For AoA measurements a directional antenna was mounted on
an electronically steerable platform for precise angular
measurements from 0 to 360 degrees in 4 degree steps.
• For each angle the time impulse response was be measured.
Submission
Slide 4
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Measurement Setup
Transmitting
Antenna
Receiving
Antenna
60 GHz Propagation Channel
Vector Network
Analyzer
amplifier
Port 1
Port 2
60 GHz Cable
60 GHz Cable
GPIB Interface
Control and Data Collection
Submission
Slide 5
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Measurements
Submission
Slide 6
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Measurements
• Angle of Arrival
Profile for the
desktop pictured
in Figure 1.
• Note that signal is
received in
multiple angles in
azimuth.
Submission
Slide 7
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Measurements
• Power delay profile
measured at desk
pictured in Figure
1.
• Note the delay and
relative reduction
of power of the
signal received at
308 degrees in
azimuth.
Submission
Slide 8
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Model
• SV model
– cluster arrival rate
– ray arrival rate (within each cluster)
– cluster decay factor
– ray decay factor
– cluster and ray log-normal standard
deviation
Submission
Slide 9
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Parameter Extraction
• Normal probability
plot of the log of
the power
amplitude of rays
received within a
cluster.
Submission
Slide 10
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Parameter Extraction
• Plot of log of
Cluster Power
versus time.
• Gradient is equal
to inverse of
Cluster Decay
factor.
Submission
Slide 11
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Parameter Extraction
• Plot of log of Ray
Power versus time.
• Gradient is equal
to inverse of Ray
Decay factor.
Submission
Slide 12
C. Liu et.al
January 2006
doc.: IEEE 802.15-15-06-040-00-003c
Extracted SV parameters
• Parameters
– cluster arrival rate 0.30
– ray arrival rate (within each cluster) 8.73
– cluster decay factor 1.47
– ray decay factor 1.00(dB),
– cluster log-normal standard deviation 2.1
– ray log-normal standard deviation 2.4
Submission
Slide 13
C. Liu et.al