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Macro & Micro Scale Spatial Rain Variation: Dynamic Millimetre Wave Communications in the Presence of Rain. C. Enjamio and E. Vilar. In collaboration with the universities of Vigo and Barcelona. Microwave Telecommunication Systems (MTS) Research Group University of Portsmouth. - PowerPoint PPT Presentation
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Macro & Micro Scale Spatial Rain Variation:
Dynamic Millimetre Wave Communications in the Presence of Rain
In collaboration with the universities of Vigo and Barcelona
Microwave Telecommunication Systems (MTS) Research GroupUniversity of Portsmouth
C. Enjamio and E. Vilar
Global Microcell Scenario
Dynamic Millimetre Wave Communications in the Presence of Rain.
Fixed Terrestrial and Satellite Systems
Global Microcell Scenario
Fixed Terrestrial and Satellite Systems
Dynamic Millimetre Wave Communications in the Presence of Rain.
Global Microcell Scenario
Fixed Terrestrial and Satellite Systems
Dynamic Millimetre Wave Communications in the Presence of Rain.
Global Microcell Scenario
Fixed Terrestrial and Satellite Systems
Dynamic Millimetre Wave Communications in the Presence of Rain.
Data BaseSatellite baseline and rain gauges distribution
dist
ance
(hm
)
distance (hm)
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=0 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=1 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=2 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=3 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=4 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=5 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=6 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=7 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=8 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rainfall Rate Spatial Distribution and Time Evolution
T=9 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140
1
2
2
2
2
3
3
4
45
6
6
7
7
8
Distance (hm)
Dis
tan
ce (
hm
)
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
T=0 min
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140
2
2
4
4
6
810
12
Distance (hm)
Dis
tan
ce (
hm
)
T=1 min
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140
2
2
4
6
8
10
10
12
14
16
Distance (hm)
Dis
tan
ce (
hm
)
T=2 min
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140
2
4
4
6
8
10
1214
16
16
Distance (hm)
Dis
tan
ce (
hm
)
T=3 min
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140
5
5
5
5
10
10
15
20
2530
3540
Distance (hm)
Dis
tan
ce (
hm
)
T=4 min
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140 2
4
6
6
88
10
1012
14
1618
Distance (hm)
Dis
tan
ce (
hm
)
T=5 min
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140
10
20
30
40
50
Distance (hm)
Dis
tan
ce (
hm
)
T=6 min
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140
5
5
10
15
20
Distance (hm)
Dis
tan
ce (
hm
)
T=7 min
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140
5
5
10 15
20
Distance (hm)
Dis
tan
ce (
hm
)
T=8 min
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
Dynamic Millimetre Wave Communications in the Presence of Rain.
20 40 60 80 100 120
20
40
60
80
100
120
140
5
5
5
5
10
152025
Distance (hm)
Dis
tan
ce (
hm
)
T=9 min
Rainfall Rate Spatial Distribution and Time Evolution. Isopleths
Dynamic Millimetre Wave Communications in the Presence of Rain.
Calculation of attenuation
Dynamic Millimetre Wave Communications in the Presence of Rain.
Slant path attenuation
Fa d
ing
(dB
)
time (minutes)
1 calculated attenuation2 measured attenuation
1
2
Broadband Wireless Acces; Different Network Topologies
• Point to Multipoint or Star Topology– easier to deploy– no routing algorithms– low CPE cost
Dynamic Millimetre Wave Communications in the Presence of Rain.
Broadband Wireless Acces; Different Network Topologies
• Mesh Topology– reconfigurability
• new user• against fading
– higher data rates
• up to 500 Mbps
Dynamic Millimetre Wave Communications in the Presence of Rain.
Rain Scattering
4 GHz 11 GHz
18.1 GHz 30 GHz
• Depends on– Raindrop Size
Distribution
• Mie Scattering Theory for Spherical Particles
Radiation pattern of a 1 mm diameter sherical raindrop
Dynamic Millimetre Wave Communications in the Presence of Rain.
Calculation of the Interfering Power, Normalised to PTGT
20 40 60 80 100 120 140
10
20
30
40
50
60
70
80
Distancia en x (hm)
Dis
tancia
en y
(hm
)
0
20
40
60
80
100
120
140
160
180
SV SV
Case 1: Omnidirectional Tx antenna
Dynamic Millimetre Wave Communications in the Presence of Rain.
Calculation of the Interfering Power, Normalised to PTGT
20 40 60 80 100 120 140
10
20
30
40
50
60
70
80
Distancia en x (hm)
Dis
tancia
en y
(hm
)
0
20
40
60
80
100
120
140
160
180
Case 2: Directional Tx antenna
SV
Dynamic Millimetre Wave Communications in the Presence of Rain.
The Communications Research ProgrammeRainfall rate fields R(x,y,t)Rainfall rate fields R(x,y,t)
Calculation of
Scattering
Calculation of
Scattering
Attenuation Attenuation
F.O.M. ScatteringF.O.M. Scattering
Bistatic Radar Eq.Bistatic Radar Eq.
Antenna Radiation Pattern
Antenna Radiation Pattern
Network topology Network topology
R.S.DR.S.D
Behaviour of an “Intelligent” System in the Presence of Rain
Behaviour of an “Intelligent” System in the Presence of Rain
CountermeasuresCountermeasures
Dynamic Millimetre Wave Communications in the Presence of Rain.
Expected Outputs
• Signal to Interference Ratio Contours– Coordination Distances – Co-existence of Systems
• Additional Contributions– Fade Statistics– Spatial and Temporal Correlation Between the ITALSAT F40
Beacon Attenuation and Rainfall Rate.– Diversity Improvements– Instrumentation requirements for radio propagation research
addressing future Broadband Fixed Wireless Access – Polarisation Effects
Towads an optimal utilisation of the available (allocated?) Spectrum
Dynamic Millimetre Wave Communications in the Presence of Rain.
Macro & Micro Scale Spatial Rain Variation:
Dynamic Millimetre Wave Communications in the Presence of Rain
In collaboration with the universities of Vigo and Barcelona
Microwave Telecommunication Systems (MTS) Research GroupUniversity of Portsmouth
C. Enjamio and E. Vilar
