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Simulation scenario

A simulation scenario is a part of simulation workspace, which defines all technical parameters of modeled links as well as some related modeling assumptions, such as physical (mutual) placement of transceivers, propagation modeling settings and so on. Within SEAMCAT a simulation scenario is based upon the notion of link. A link stands for a couple transmitter-receiver operating together in a given radiocommunication system.

A typical scenario consists of:

  • One victim link which describes the communication system being interfered,
  • At least one interfering link which describes the interfering system(s) that may cause interference to the victim link.
  • Note: CDMA or OFDMA systems are modeled differently, using special algorithm that creates a grid of multiple cells, see CDMA / OFMDA info here.
Generic modelingCellular modeling (downlink)

Programming simulation scenario

When a new workspace is created, all of its scenario elements are populated with some default values (representing some hypothetical interference case between two mobile systems at 900 MHz). Therefore after creating a new workspace the user should at first proceed with reviewing and modifying the scenario parameters so that the resulting simulation scenario would reflect the configuration of simulated radiocommunications systems.

Since the scenario fields would always contain some default elements, any process of "entering scenario" is, literally, a process of modifying the pre-programmed default one.

Several simple examples of how to program the simulation scenario are available with the associated SWS files in this on-line manual.

The typical workflow of programming the scenario would be as follows:

  1. Victim link:

Review and edit the victim link, by selecting the Victim Link tab from the Workspace environment.

  1. Interfering Links

Review and edit the interfering links, by selecting the Interfering Links tab from the Workspace environment. You may want to add a default link or duplicate a selected link from the list. You can also delete all the links except one. By scrolling up and down you are able to see the differences between the interfering links.

  1. Within the victim or interfering link environment, you can select either you system is of a generic format or of a cellular system type (i.e. CDMA or OFDMA system)
  2. Simulation control: You can control the number of event you want to simulate by updating the simulation control fields. By default, 20000 events will be generated (i.e. for generic). When you select CDMA or OFDMA as one system, you will be prompted to reduce the number of events.

  1. Having reviewed the scenario, you can launch your simulation.

See further page on (sharing) SEAMCAT scenarios.