[Openbts-discuss] In Openbts, what formulation is used to generate the gsm pulse?

[WANG FEI-YU-V. <VP...@mo...>]

Hi openbts-discurss:
 
In generateGSMPulse(),I found the code:
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  int centerPoint = (numSamples-1)/2;
  for (int i = 0; i < numSamples; i++) {
    float arg = (float) (i-centerPoint)/(float) samplesPerSymbol;
    *xP++ = 0.96*exp(-1.1380*arg*arg-0.527*arg*arg*arg*arg); // GSM
pulse approx.
  }
 
  float avgAbsval = sqrtf(vectorNorm2(*x)/samplesPerSymbol);
  xP = x->begin();
  for (int i = 0; i < numSamples; i++) 
    *xP++ /= avgAbsval;
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Does it implement the Gauss filter?