102
Network Design and Engineering Guide
2010-10-26
Outdoor Unit and Satellite Link Design
Link Budget Examples
For the stations as a first try we use 2.4m antennas on every site. Then the station parameters
are given by:
Figure 3-36
Scenarion 1 - 2 Carrier Solution Stations
Now we calculate the link budget under the constraint that the power requirement for every site
should not exceed 30 W. That allows the use of following modulation and coding choices and
resulting bandwidths:
Table 3-6
Scenario 1 - Carrier Coding and Bandwidth
The power requirements for the individual earth stations can be summarized in following table:
Table 3-7
Scenario 1 - Summarized Power Requirements
Meshed Network
Carrier 1
Carrier 2
Total bandwidth re-
quired ( carrier spac-
ing = 1.2) [KHz]
Modulation
8PSK
QPSK
FEC
2/3
2/3
7096
Estimated Symbol
Rate [ksps]
2713
3200
Meshed Network
Madrid
Berlin
Rome
Casablanca
Tunis
Home Channel
1
1
2
2
2
Power requirement [W]
9.5
6.6
9.3
25.2
12.8
Amplifier power class [W]
20
8
20
30
20
Power equivalent band-
width [kHz]
with UPC (Home Channel)
1064
983
552
1125
542
Carrier bandwidth [kHz]
(Home Channel)
3256
3256
3840
3840
3840
Содержание SKYWAN IDU 7000
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