code: public Predictor system(double pwr, Noise noise, RSN rsn)
      {
          return system(pwr, noise.getValue(), 3, 90, rsn.getSnRatio(), 3, 0.1);
      }
docs: The SYSTEM command line includes parameters necessary to define the
  system configuration.
  
  @param pwr PWR indicates the transmitter power in kilowatts.
  @param noise XNOISE indicates the expected man-made noise level.
  @param rsn RSN indicates the required signal-to-noise and is the ratio of
  the hourly median signal power in the occupied bandwidth relative to the
  hourly median noise in a 1 Hz bandwidth, which is necessary to provide
  the type and quality of service required (expressed in decibels).
  @return