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Ericcsson bugfix

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alex
2017-02-21 22:15:05 +00:00
parent dded0219cf
commit e68a6c4221
3 changed files with 31 additions and 60 deletions
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13
models/ericsson.cc
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@@ -5,15 +5,14 @@
double EricssonpathLoss(float f, float TxH, float RxH, float d, int mode)
{
/*
http://research.ijcaonline.org/volume84/number7/pxc3892830.pdf
AKA Ericsson 9999 model
*/
// Default is Urban which bizarrely has lowest loss
// Urban
double a0 = 36.2, a1 = 30.2, a2 = -12, a3 = 0.1;
if (f < 150 || f > 3500) {
if (f < 150 || f > 1900) {
fprintf
(stderr,"Error: Ericsson9999 model frequency range 150-3500MHz\n");
(stderr,"Error: Ericsson9999 model frequency range 150-1900MHz\n");
exit(EXIT_FAILURE);
}
@@ -21,13 +20,13 @@ double EricssonpathLoss(float f, float TxH, float RxH, float d, int mode)
a0 = 43.2;
a1 = 68.93;
}
if (mode == 1) { // "Rural" but has highest loss according to Ericsson.
if (mode == 1) { // Rural
a0 = 45.95;
a1 = 100.6;
}
double g1 = (11.75 * RxH) * (11.75 * RxH);
double g1 = 3.2 * (log10(11.75 * RxH) * log10(11.75 * RxH));
double g2 = (44.49 * log10(f)) - 4.78 * ((log10(f) * log10(f)));
return a0 + a1 * log10(d) + a2 * log10(TxH) +
a3 * log10(TxH) * log10(d) - (3.2 * log10(g1)) + g2;
a3 * log10(TxH) * log10(d) - g1 + g2;
}