multi-user-system fm, tetra, gsm, umts, lte, … · multi-user-system fm, tetra, gsm, umts, lte,...
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MULTI-USER-SYSTEM FM, TETRA, GSM, UMTS, LTE, GPS, WLAN
1(10)
Mats Larsson Email: [email protected]
mobile: +46 70 650 80 30 www.micnordic.se
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Wireless technology ……
9 (10)
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Frequency
Time
Power
Channel 1Channel 2Channel 3Channel 4
Frequency
Time
Power
Frequency
Time
Power
Channel 1Channel 2
Channel 3Channel 4
CDMA FDMA TDMA
Different Access Methods
UMTS GSM, TETRA
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Modulation
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Modulation
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40 dBm
36 dBm
33 dBm
30 dBm
27 dBm
24 dBm
21 dBm
18 dBm
15 dBm
12 dBm
9 dBm
6 dBm
3 dBm
0 dBm
-3 dBm
.
.
.
-50 dBm
2dB step size
2dB step size
2,1,0.5 dB step size
5dB step size
10 watts
4 watts
2 watts
1 watts
0.50 watts
0.25 watts
0.13 watts
63 milliwatts
32 milliwatts
16 milliwatts
.
.
.
1 milliwatts
0.50 milliwatts
.
.
.
.
0.00001 milliwatts
GSM 900
GSM 1800
UMTS TETRA
GSM 900/1800 with 1/8th of time and Tetra with 1/4th gives avg Tx power: GSM 900: 250mW Tetra: 250 mW
GSM1800 125mW UMTS 2100: 125mW
Power Control
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Mobile Communications
1G • Analog Phones
2G • TDMA, GSM, GPRS, EDGE
3G • WCDMA, HSDPA, HSUPA, Wimax
4G • LTE, OFDM, MIMO
5G • Het Net ….??
2 (10)
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Frekvenser
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Frekvenser
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Frekvenser
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Spektrumbild av 920-960 MHz-bandet utanför Sandviken i början på september
Telia GSM
N4M LTE
Hi3G UMTS
GSM-R N4M
GSM
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Frekvenser
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Frekvenser
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Frekvenser
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Changes in industry structure
Mixed use of 2 and 3 digit MNCs
The mobile telecommunications industry is moving towards a more fragmented structure with more specialized players both in service provision and access.
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Coverage in tunnels
3 (10)
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Coverage in arenas
4( 10)
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Coverage inside public places
5 (10)
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Coverage on trains
6 (10)
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Coverage inside buildings
7 (10)
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Repeatrar
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Repeatrar
TETRA
Telerum
Antenner på tak
EMPTETRA7/8" läckkabel
DC-Block
splitt
Tingstadstunneln
Hus vid tunnelmynning
Antenner på tak
Hus vid tunnelmynning
Telerum
EMPsplitt
DC-Block
DC-Block DC-Block
BSRBSR
jordjord
Götaälv
TETRA
FM
FM
MBC
FM
MBC
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GPS Repeater för bibehållen synkronisering
GPS Roof Antenna
GPS Repeater Kit
Tunnel/Hanger/Garage/Lab
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Meeting the challenges ahead
MIC Nordic AB +46 8 23 97 00
10 (10)