Annex 1 A satellite
system with wideband spreading signals (direct sequence (DS) technology)
1 Introduction
2 Application 1 –
A satellite system with wideband spreading signals overlaid on the conventional
FSS FDMA signals
2.1
System models
2.2
Link budget analysis and performance estimation
2.2.1 Step 1
2.2.2 Step 2
2.2.3 Step 3
2.3
Results of link budget analysis
2.4
Summary of available data rate
2.4.1 Data rate with a
variety of C/I values
2.4.2 Data rate with a
variety of C/T degradations due to interference from adjacent
satellites
2.5
Impact of the overlay of wideband spreading signals on FDMA
carriers
2.6
Discussion
3 Application 2
– A satellite system with dedicated bandwidths for both FDMA signals and
wideband spreading signals
3.1
System model
3.2
Link budget analysis and performance estimation
3.3
Results of link budget analysis
3.4
Summary of available data rate
3.4.1 Data rate with a
variety of bandwidths for spreading signals
3.4.2 Data rate for C/T
degradation levels due to interference from adjacent satellites
3.5
Discussion
4 Summary
Annex 2 An FSS system with a number of narrow spot beams using the
CDMA (wideband spreading signals)
1 Overview
2 Channel capacity
in the FDMA case
3 Channel capacity
in the CDMA case
4 Channel capacity
evaluation using parameters of the system example
5 Summary
Annex 3 A satellite system using wideband spreading signals in
uplinks to reduce the off-axis emission
1 Overview
2 Example of the
system parameters
3 Results
4 Summary