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9a IMT-2020 MODULE

The results tab for the case of IMT-2020 as a victim system and the produced outputs are similar to those for OFDMA (see section 9)

10 Scenario

10.1 Setting the scenario

10 Scenario

A typical scenario consists of one victim link which describes the communication system being interfered and at least one interfering link which describes the interfering system(s) that may cause interference to the victim link. CDMA or OFDMA systems are mode...

10.2 Multiple Interferers generation

10 Scenario

You have 3 options to generate multiple interferers in SEAMCAT.

10.2.1 Generation of multiple interferer links with different systems

10 Scenario 10.2 Multiple Interferers generation

This option allows SEAMCAT to generate multiple interferers which may have the same or different technical characteristics from each other.  The following menu buttons are available in the interfering system links control panel. Add an ...

10.2.2 Auto-generation of multiple interfering links

10 Scenario 10.2 Multiple Interferers generation

This option corresponds to duplicate n times a specific interfering links on a circle or on a hexagonal grid as illustrated below in (a) and (b) respectively. It is available by clicking on (  ). These interferers have the same characteristics as the reference...

10.2.3 Generation of interferers with the same characteristics

10 Scenario 10.2 Multiple Interferers generation

Within one interfering link, you can define a number of active interfering transmitters when the mode "None" or "Uniform density" is selected. These active transmitters have the same technical characteristics (i.e. a simple duplicate) and they are deployed spa...

10.3 Interfering Link Transmitter to Victim Link Receiver Path (ILT -> VLR)

10 Scenario

introduction

10 Scenario 10.3 Interfering Link Transmitter to Vi...

The ILT to VLR path can have several combinations as shown in Figure 224. Four panels characterised the path between the ILT and ILR.  Figure 221: ILT to VLR path combination with generic and cellular system   Figure 222: Transmitter to Victim...

10.3.1 Relative positioning of interfering link (Generic system)

10 Scenario 10.3 Interfering Link Transmitter to Vi...

The relative position of the Victim Receiver (VLR) and the Interfering Transmitter (ILT) depends on the various options presented below. There is a unique simulation radius (Rsimu) contrary to the 2 coverage radius (one for the victim and one for the interfere...

10.3.2 Relative positioning of interfering link (Cellular system)

10 Scenario 10.3 Interfering Link Transmitter to Vi...

The relative position of the Victim Receiver (VLR) and the Interfering cellular system depends on the various options presented below.  Figure 228: Relative positioning of a cellular interfering link with a generic victim system Cor. (interfering...

10.3.3 Interferers density

10 Scenario 10.3 Interfering Link Transmitter to Vi...

The panel is activated if "Uniform density" or/and "closest interferer" mode is selected. See Annex ‎A13.2.2 for more details on the calculation. Figure 230: Interferers density panel (only in "Uniform density" and "closest interferer” mode)   Table 47: Settin...

10.3.4 Pathloss correlation

10 Scenario 10.3 Interfering Link Transmitter to Vi...

The panel is activated if the victim is either OFDMA UL or OFDMA DL. It is decribed in more details in Section ‎9.11.

10.3.5 Propagation Model

10 Scenario 10.3 Interfering Link Transmitter to Vi...

You can choose the suitable propagation model to be applied when calculating signal loss between the ILT and the VLR. A choice and settings of propagation models are presented in ‎ANNEX 17:. 

10.4 Interfering link transmitter to victim link transmitter path (spectrum sensing)

10 Scenario

10.4.1 Spectrum sensing characteristics

10 Scenario 10.4 Interfering link transmitter to vi...

When the spectrum sensing is activated, the tab “Interfering link transmitter to victim link transmitter path” will become editable (#1 of Figure 231) and you can set the input parameters of the CR algorithm (#2). Note that the frequency of the interferer is d...

10.4.2 Detection of threshold

10 Scenario 10.4 Interfering link transmitter to vi...

In relation to the spectrum sensing results, if this CR detect that a victim system is in the vicinity it will select an appropriate operating frequency and it will lower its emission based on an e.i.r.p. max in block limit defined in the spectrum sensing char...

10.4.3 Probability of failure

10 Scenario 10.4 Interfering link transmitter to vi...

This feature is input selectable (by default, it is de-activated).The probability of failure may account for the failure in selecting wrongly a non_available channel for one event. This means that when a failure appears, a channel which was initially selected ...