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5.2.3 Antenna patterns identification
This panel is a common interface that is reused in all other radio system. It contains all information relative to the antenna radiation pattern: Table 11: Antenna pattern identification Description Symbol Type Unit Comments Library - ...
5.2.4 Reception characteristics
This panel consists in setting of the receiver characteristics of the generic system: Table 12: Reception characteristics GUI Description Symbol Type Unit Comments Noise floor: define a distribution of the noise floor N Distribution or...
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 victim is a generic system. The consistency between these values falls under the responsibility of the user. It should be noted that only one criterion is used at ...
Introduction
It can be the ILT or the VLT as illustrated in Figure 146. Figure 146: Transmitter illustration as ILT or VLT It consists in 4 panels (Figure 147); Transmitter identification, antenna pointing, antenna patterns identification, emission characteristics. ...
5.3.1 Transmitter identification
This is the same panel as in section 5.2.1 so that transmitter characteristics can be imported/exported from/to the library to/from the workspace and you can freely chose a name and a description.
5.3.2 Transmitter power
In SEAMCAT, the transmitter power (P) is expressed as conducted power in dBm, including feeder loss. The antenna peak gain (G) is expressed in dBi. Consequently, the power calculated by SEAMCAT at the antenna output is the effective isotropic radiated power (e...
5.3.3 Transmitter antenna pointing
This is the same panel as in section 5.2.1 so that transmitter characteristics can be imported/exported from/to the library to/from the workspace and you can freely chose a name and a description.
5.3.4 Antenna patterns identification
It contains all information relative to the antenna radiation pattern. It is similar to the receiver antenna patterns identification (Section 5.2.3).
5.3.5 Emission characteristics
This panel consists in setting of the emission characteristics of your generic system. Table 14: Emission characteristics GUI Description Symbol Type Unit Comments Power P Scalar or Distribution dBm This is the transmitter power...
Introduction
3 elements form the path between the VLR and the VLT or the ILR and ILT as illustrated in Figure 148. Figure 148: Transmitter to Receiver Path illustration Figure 149: Transmitter to Receiver Path GUI
5.4.1 Relative location
When the Correlated distance option is checked, the positions of the receiver and transmitter are geographically fixed with respect to each other (e.g. co-located or constantly spaced base stations). The transmitter is considered a reference centre. When t...
5.4.2 Coverage radius
A coverage radius is calculated for both the victim link and the interfering link. It is the for the victim link (VLR-VLT) and the for the interfering link (ILR-ILT) (see Annex A13.1). The receivers will be randomly deployed within the area centred on th...
5.4.3 Local environment
The percentage of transceivers being indoor and outdoor can be selected thanks to this panel. It will work in combination with the chosen propagation model that you will select. By default the transmitter and receiver are located outdoor. For each elements of ...
5.4.4 Propagation Model
A suitable propagation model can be selected to be applied when calculating signal loss along the path between transmitters and receivers. Further information on propagation models are presented in detail in ANNEX 17.
6.1 Introduction
Cognitive radio is a technology which is being developed to bring greater efficiency, speed and reliability to users of wireless devices. The number of high powered wireless devices coming on to the market is increasing exponentially placing an unprecedented d...
6.2 Simulating spectrum sensing
The manual sets out how SEAMCAT can be used for spectrum sensing where the interfering devices (ILT) try to detect the presence of protected services (e.g. the VLT) transmitting in each of the potentially available channels. Spectrum sensing essentially involv...
6.3 Input system parameters
For the sensing feature to be activated, both the victim and interferer transmitters have to have the “interferer is CR” selected (Figure 158). This will activate the spectrum sensing algorithm (see ANNEX 16:) and will allow you to set the transmitting charact...
6.4 Scenario parameters
In addidtion to the input system parameters, you also need to set charateristics of the spectrum sensing algorithm as described in Section 10.4.