5 Generic module
As mentioned earlier in this manual, virtually all radio interference scenarios on terrestrial paths can be addressed in both co-channel (sharing) and adjacent frequency (compatibility) interference studies. A number of various radiocommunications services can be modelled using the generic module:
- Broadcasting: Terrestrial systems and earth stations (e.g. DTH receivers) of satellite systems;
- Fixed services: Point-to-point and point-to-multipoint fixed systems;
- Mobile Services: Land mobile systems, short range devices and earth based components of satellite systems.
This flexibility is achieved by the way the system parameters are defined as constant values or random variables through their distribution functions. It is therefore possible to model even very complex situations by relatively simple variations of some elementary functions. This section explains the use of these parameters in SEAMCAT calculations, where appropriate.
5.1 Generic system tab
Intro
This tab allows you to update all scenario parameters of for a generic system . In the upper part...
5.1.1 System
You can name and write some description of the victim system you want to simulate.
5.1.2 General
The user can enter the frequency. The frequency value is overwritten at the “Scenario” tab level....
5.2 Receiver
Introduction
It can be the VLR or the ILR as illustrated in Figure 143. Figure 143: Receiver ill...
5.2.1 Receiver identification
This panel is a common interface that is reused in all other radio system. Table 9: Receiver id...
5.2.2 Antenna pointing
This panel is a common interface that is reused in other radio system. It contains all informatio...
5.2.3 Antenna patterns identification
This panel is a common interface that is reused in all other radio system. It contains all inform...
5.2.4 Reception characteristics
This panel consists in setting of the receiver characteristics of the generic system: Table 12:...
5.2.5 Interference criteria
Section 1.4 presented the concept of interference criteria (C/I, C/(N+I), (N+I)/N, I/N) when the ...
5.3 Transmitter
Introduction
It can be the ILT or the VLT as illustrated in Figure 146. Figure 146: Transmitter illustratio...
5.3.1 Transmitter identification
This is the same panel as in section 5.2.1 so that transmitter characteristics can be imported/ex...
5.3.2 Transmitter power
In SEAMCAT, the transmitter power (P) is expressed as conducted power in dBm, including feeder lo...
5.3.3 Transmitter antenna pointing
This is the same panel as in section 5.2.1 so that transmitter characteristics can be imported/ex...
5.3.4 Antenna patterns identification
It contains all information relative to the antenna radiation pattern. It is similar to the recei...
5.3.5 Emission characteristics
This panel consists in setting of the emission characteristics of your generic system. Table ...
5.4 Transmitter to Receiver Path
Introduction
3 elements form the path between the VLR and the VLT or the ILR and ILT as illustrated in Figure ...
5.4.1 Relative location
When the Correlated distance option is checked, the positions of the receiver and transmitter a...
5.4.2 Coverage radius
A coverage radius is calculated for both the victim link and the interfering link. It is the ...
5.4.3 Local environment
The percentage of transceivers being indoor and outdoor can be selected thanks to this panel. It ...
5.4.4 Propagation Model
A suitable propagation model can be selected to be applied when calculating signal loss along the...