Introduction to SEAMCAT


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The radio spectrum, since it is a limited resource,  can only be used optimally if radio compatibility is ensured between different radio systems located in the same or adjacent frequency ranges. When several systems, possibly employing different technologies, are operating in the same or neighbouring geographical areas and are using frequency bands close to one another, the compatibility between different systems has to be studied. In many cases spectrum engineers are facing EMC scenarios where traditional analytical methods cannot offer any satisfactory solution.

A new statistical simulation model based on the Monte Carlo method was developed within the frame of the CEPT/ERC Working Group Spectrum Engineering (WGSE). The theoretical background of this new model is presented in the ERC Report 68. This Report has been used as a basis for the development of functional specifications for SEAMCAT software.

SEAMCAT is a flexible tool for analysis of a variety of compatibility scenarios, and it offers some particularly important features:

  • quantification of interference levels
    The level of interference between different radio systems is expressed in terms of a probability that the reception capability of the receiver under consideration is impaired by the presence of an interferer.

  • consideration of spatial and temporal distributions of the received signals 
    This is helpful in developing appropriate frequency planning arrangements or necessary limits for transmitter/receiver parameters.

  • SEAMCAT can address any interference scenario regardless of the type of victim and interfering radio systems.

SEAMCAT tool was developed in CEPT as a co-operation project between NRAs, industry and ERO. The first release of SEAMCAT was finalised in January 2000, the latest official version 2.1 of the second release was made available since February 2003 . The installation files are available for free download elsewhere on this site.

Since 5 September 2002, the ERO/ECO is responsible for overall management of SEAMCAT project. Additional technical expertise for support of the project is drawn through the so called SEAMCAT Technical Group (STG) within the CEPT WGSE.

The upgrade of SEAMCAT software into its 3rd phase (called SEAMCAT-3) that took place in 2003-2005, had the following main aims:

  • Porting of software to open Java® platform, with introduction of Live Web update and similar new functionalities;
  • Improvement of interactivity of simulations through the graphic representation of scenarios;
  • Implementation of algorithms for direct simulation of CDMA systems, both as victim and interferer;
  • Implementation of plug-in modularity (Propagation model plug-in as well as generic Post-processing plug-in)
  • Improved functionality for complex simulations (limitless batch, remote computing)

Currently SEAMCAT-3 is the latest official release of SEAMCAT tool. Further updates are possible in the future and ECO welcomes any proposals for implementation of new functionalities in SEAMCAT.

For any queries related to SEAMCAT please contact Jean-Philippe Kermoal (ECO) at [email protected] or phone +45 33 89 63 07



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