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May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 11
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Project: IEEE P802.15 Working Group for Wireless Personal Area NetworksProject: IEEE P802.15 Working Group for Wireless Personal Area Networks
Submission Title:Submission Title: [Observation on Narrowbeam Circular Polarization Measurement] [Observation on Narrowbeam Circular Polarization Measurement]Date Submitted: Date Submitted: [May 16, 2006][May 16, 2006]Source:Source: [Zhiguo Lai] Company [University of Massachusetts Amherst] [Zhiguo Lai] Company [University of Massachusetts Amherst]Address [130 Natural Resources Road, Room 228, Marston Hall, University of Address [130 Natural Resources Road, Room 228, Marston Hall, University of Massachusetts, AmherstMassachusetts, Amherst, MA 01003, U.S.A., MA 01003, U.S.A.]]Voice: [Voice: [(413) 545-4351(413) 545-4351], E-Mail: [], E-Mail: [[email protected]@ecs.umass.edu]]
Re:Re: [] []
Abstract: Abstract: [Update of activities in the channel modeling sub-group and call for [Update of activities in the channel modeling sub-group and call for participation]participation]
Purpose:Purpose: [[Contribution to 802.15 TG3c at May 2006 interim in JacksonvilleContribution to 802.15 TG3c at May 2006 interim in Jacksonville]]
Notice:Notice: This document has been prepared to assist the IEEE P802.15. It is offered 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 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 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 content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein.withdraw material contained herein.Release:Release: The contributor acknowledges and accepts that this contribution becomes The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15.the property of IEEE and may be made publicly available by P802.15.
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 22
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Measurement InformationMeasurement Information Measurement setup as per [15-05-0537-00-003c-university-Measurement setup as per [15-05-0537-00-003c-university-
massachusetts-measurement-plan]massachusetts-measurement-plan] Environments: office (corridor and cubicle), conference room, Environments: office (corridor and cubicle), conference room,
residentialresidential• The corridor measurements were made in a passage way with office cubicles on The corridor measurements were made in a passage way with office cubicles on
either side. either side. • The measurement in the office cubicle was made with metal shelves, white board, The measurement in the office cubicle was made with metal shelves, white board,
and office window. Owing to the small size of these cubicles, one measurement and office window. Owing to the small size of these cubicles, one measurement could be made per cubicle.could be made per cubicle.
• The residential measurement was made in US homes. The environment consists of The residential measurement was made in US homes. The environment consists of windows, doors, picture frames, wooden furniture, and fire place. windows, doors, picture frames, wooden furniture, and fire place.
• The small conference room has metal shelves, white board and office window. The small conference room has metal shelves, white board and office window. • The large conference room has a large white board and office window.The large conference room has a large white board and office window.
Center frequency: ~60 GHzCenter frequency: ~60 GHz Bandwidth: ~1 ns pulseBandwidth: ~1 ns pulse Contains angular information: Receiver rotated in steps of 1.98ºContains angular information: Receiver rotated in steps of 1.98º Rx/Tx antenna type: Directional, HPBW of 14ºRx/Tx antenna type: Directional, HPBW of 14º Polarization: Circular, right handPolarization: Circular, right hand
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 33
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Office Cubicle LayoutOffice Cubicle LayoutMeasurement #2Measurement #2
5' 1"
Closed Book Shelf36" W x 15" D x 16 H
36"
15"
36"
Table Top
58"
36"
36"
18"Floor Mounted Self
36" W x 18" D x 28" H
Op
en
Bo
ok S
he
lf3
6" W
x 15
" D x 1
6 H
36"
15"Chair
72"
8' 1"
Closed Book Shelf36" W x 15" D x 16 H
36"
15"
36"
Table Top
58"
36"
White Board35" W x 34" H x 0.67" D
35"
36"
18"Floor Mounted Self
36" W x 18" D x 28" HOp
en
Bo
ok
Sh
elf
36
" W
x 1
5"
D x
16
H
36"
15" Chair
3' 10"
John’s Office
62"
Window metal frame
Closed Book Shelf36" W x 15" D x 16 H
36"
15"
Table Top
58"
36"
Ken’s Office
15"
Table Top
58"
36"
18"Floor Mounted Self
36" W x 18" D x 28" H
Op
en
Bo
ok S
he
lf3
6" W
x 15
" D x 1
6 H
36"
15"Chair
Floor Mounted Self36" W x 18" D x 28" H
RX
TX
104"8' 7.9"
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 44
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Reflection PlotReflection PlotMeasurement #2Measurement #2
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 55
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
0 2 4 6 8 10 12 14 16 18 20-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
delay (ns)
x(t
) (m
V)
= 0
= 3.96
= 7.92
= 11.88
Impulse Responses at Different AnglesImpulse Responses at Different AnglesMeasurement #2Measurement #2
~1.6ns ~1.6nsBW of receiver filter = 625 MHz 1/625MHz = 1.6ns
Not Reflections!
LOS
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 66
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 180-60
-50
-40
-30
-20
-10
0
(deg)
pow
er (
dB)
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 1800
5
10
15
20
(deg)
dela
y (n
s)
Reflection Plot over 360°Reflection Plot over 360°Measurement #2Measurement #2Maximum strength (normalized) of the received signal at each angle:Maximum strength (normalized) of the received signal at each angle:
Corresponding delays:Corresponding delays:
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 77
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Conference Room LayoutConference Room LayoutMeasurement #5Measurement #5
14' 9"
11' 4"
9.5"13' 4"
7' 4"
Door9' 2"3'
8' 3"
8'
White Board8' W x 4' H
Bottom of the board is 3' above the floor
Door
5'
5' 10'
9' 5"
5'
5'
Rx-ARx-A
Tx-ATx-A
Rx
-BR
x-B
Tx
-BT
x-B
Measurement AMeasurement A 141” 141”
Measurement BMeasurement B 84”84”
Measurement CMeasurement C Rx and Tx in Rx and Tx in
Measurement B reversedMeasurement B reversed 83”83”
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 88
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Reflection PlotReflection PlotMeasurement #5aMeasurement #5a
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 99
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Impulse Responses at Different AnglesImpulse Responses at Different AnglesMeasurement #5aMeasurement #5a
0 2 4 6 8 10 12 14 16 18 20-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
delay (ns)
x(t
) (m
V)
= 0
= 3.96
= 7.92
= 11.88
~1.6ns ~1.6ns
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 1010
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Reflection Plot over 360°Reflection Plot over 360°Measurement #5aMeasurement #5a
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 180-60
-50
-40
-30
-20
-10
0
(deg)
pow
er (
dB)
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 1800
5
10
15
20
(deg)
dela
y (n
s)Maximum strength (normalized) of the received signal at each angle:Maximum strength (normalized) of the received signal at each angle:
Corresponding delays:Corresponding delays:
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 1111
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Living Room LayoutLiving Room LayoutMeasurement #9aMeasurement #9a
TxTx
RxRxEE
43”43”
32”32”
38”38”
14”14”
Distance between Tx and Distance between Tx and RxRxEE is 109.5”, 2.8 m is 109.5”, 2.8 m
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 1212
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Reflection PlotReflection PlotMeasurement #9aMeasurement #9a
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 1313
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
0 2 4 6 8 10 12 14 16 18 20-0.02
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
delay (ns)
x(t
) (m
V)
= 0
= 3.96
= 7.92
= 11.88
Impulse Responses at Different AnglesImpulse Responses at Different AnglesMeasurement #9aMeasurement #9a
~1.6ns~1.6ns
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 1414
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
Reflection Plot over 360°Reflection Plot over 360°Measurement #9aMeasurement #9a
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 180-40
-30
-20
-10
0
(deg)
pow
er (
dB)
-180 -150 -120 -90 -60 -30 0 30 60 90 120 150 1800
5
10
15
20
(deg)
dela
y (n
s)Maximum strength (normalized) of the received signal at each angle:Maximum strength (normalized) of the received signal at each angle:
Corresponding delays:Corresponding delays:
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 1515
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
0 1 2 3 4 5 6 7 8-0.2
0
0.2
0.4
0.6
0.8
delay (ns)
norm
aliz
ed x
(t)
Measurement #2Measurement #5aMeasurement #9a
Consolidated Impulse Plot At 0ºConsolidated Impulse Plot At 0º
May 2006May 2006
Zhiguo Lai, University of Massachusetts - AmherstZhiguo Lai, University of Massachusetts - AmherstSlide Slide 1616
doc.: IEEE 802.15-06-216-01-003cdoc.: IEEE 802.15-06-216-01-003c
SubmissioSubmissionn
SummarySummary In all three different environments, only the line of sight
signal is observed, i.e., no strong multipath is detected. We will make more measurements using an omni-
antenna at the transmitting end and a directional antenna at the receiving end (linear polarization).