ieee 802.16m case study channel model
DESCRIPTION
IEEE 802.16m CASE STUDY CHANNEL MODEL. Siddharth Nair G200901750 EE 578 04/12/10. Introduction. Link Level Channel Model Large Scale & Small Scale Fading Characteristics. Spatial Channel Modeling. Ray Based Each Tap a Summation Of Rays at each time instant - PowerPoint PPT PresentationTRANSCRIPT
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IEEE 802.16M
CASE STUDY
CHANNEL MODEL
Siddharth NairG200901750
EE 57804/12/10
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INTRODUCTION
Link Level Channel Model Large Scale & Small Scale Fading
Characteristics
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SPATIAL CHANNEL MODELING
Ray Based Each Tap a Summation Of Rays at each time
instant Channel Coefficients Dependent on
Antenna Configuration Gain Pattern AoA, AoD
Correlation Based Mandatory Baseline Channel Modeling Approach Antenna Correlation Based On
AoA, AoD, Angular Profile, Antenna Configuration Provides Both Spatial and Temporal
Correlation(Doppler)
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RADIO ENVIRONMENTS
Urban Macrocell – Manhattan Type Grid Suburban Macrocell – Low Residential
Detached Houses Urban Microcell – Height Of Both BS And
MS Well Below Surrounding Buildings Indoor Small Office Outdoor To Indoor – Combination Of Any Of
The Outdoor/Indoor Scenarios Indoor Hotspots – Conference Halls,
Shopping Malls Open Rural Macrocell – Low Building
Density 4
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LARGE SCALE PATH LOSS WITH SHADOWING
COST-231 Modified Hata Model Used
1000 2000 3000 4000 5000 6000 7000 8000 9000 1000050
100
150
200
250
300
350
400Large Scale Path Loss With Shadowing Effect
Distance (m)
Pat
h Lo
ss (
dB)
URBAN NLOS MACROCELL | SF = 8 dB
SUBURBAN NLOS MACROCELL | SF = 8 dBURBAN LOS MICROCELL | SF = 3 dB
0 100 200 300 400 500 600 700 800 900 100050
60
70
80
90
100
110
120
130
140Large Scale Path Loss With Shadowing Effect
Distance (m)
Pat
h Lo
ss (
dB)
URBAN LOS MICROCELL | SF = 3 dB
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NO SHADOWING
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
102
103
Large Scale Path Loss
Distance
Pat
h Lo
ss
URBAN NLOS MACROCELL
SUBURBAN NLOS MACROCELLURBAN LOS MICROCELL
6
0 100 200 300 400 500 600 700 800 900 100050
60
70
80
90
100
110
120
130
140Large Scale Path Loss
Distance (m)
Pat
h Lo
ss (
dB)
URBAN LOS MICROCELL
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SMALL SCALE FADING
Cluster Delay Line Model Used CDL Model seen as an extension to Tap Delay
Line Model Each Cluster a Group of Multipath
components whose Large scale characteristics do not change relative to each other AoA, AoD Per Tap Power Delays
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CDL MODEL –MIMO
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SPATIAL CORRELATION CALCULATION
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URBAN MACROCELL NLOS CHANNEL
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INPUT
Fs = 20e6 Hz Fd = 0 Hz Ts = 1/Fs Nt = 2 Nr = 2
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IMPULSE RESPONSE
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
x 10-6
-0.4
-0.2
0
0.2
0.4Receiver 1
Real
Imag
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
x 10-6
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4Receiver 2
Real
Imag
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FREQUENCY RESPONSE
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
x 107
10-4
10-3
10-2
10-1
100
101
Receiver 1
Receiver 2
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FD=350 HZ
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
x 10-6
-0.6
-0.4
-0.2
0
0.2
0.4Receiver 1
Real
Imag
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
x 10-6
-0.4
-0.2
0
0.2
0.4
0.6Receiver 2
Real
Imag
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
x 107
10-4
10-3
10-2
10-1
100
101
Receiver 1
Receiver 2
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URBAN NLOS MICROCELL
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INPUT
Fs = 20e6 Hz Fd = 0 Hz Ts = 1/Fs Nt = 2 Nr = 2
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IMPULSE RESPONSE
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
x 10-6
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5Receiver 1
Real
Imag
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
x 10-6
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3Receiver 2
Real
Imag
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FREQUENCY RESPONSE
-1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1
x 107
10-3
10-2
10-1
100
101
Receiver 1
Receiver 2
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THANK YOU !!
QUESTIONS AND COMMENTS