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Interference Calculation Engine of SEAMCAT

The Interference Calculation Engine (ICE) is the ultimate part of the SEAMCAT architecture when applied to non-CDMA victim systems. In ICE, the samples of wanted (dRSS) and unwanted (iRSS) signals generated by the EGE are compared against the relevant signal-to-noise criteria (specified in the scenario, such as C/N, C/N+I etc) to calculate the actual probability of interference. This probability can be calculated for three different interference types:

  1. unwanted signal interference in victim receiver's bandwidth,
  2. victim receiver's response to blocking interference,
  3. victim receiver's rejection for intermodulation interference.

Two modes of operations are implemented for the ICE module:

  • Compatibility
    • This mode provides a single-figure estimate of the probability of interference in a given interference scenario;
  • Translation
    • This mode calculates probability of interference as a function of changing one of the following three parameters:
      • Transmitter power of the interfering transmitter,
      • Blocking response level of the victim receiver,
      • Intermodulation rejection level for the victim receiver.

You can find more information on the usage of the ICE calculation and results.