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alex
2015-03-06 21:57:17 +00:00
parent 6d250fc7ec
commit 0c4ff44a6e
10 changed files with 124 additions and 1435 deletions
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45
models.cpp
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@@ -88,7 +88,7 @@ modes 1 = URBAN, 2 = SUBURBAN, 3 = OPEN
if(f<150 || f>1500){
printf("Error: Hata model frequency range 150-1500MHz\n");
return 0;
exit(EXIT_FAILURE);
}
float lRxH = log10(11.75*RxH);
float C_H = 3.2*lRxH*lRxH-4.97;
@@ -123,7 +123,7 @@ http://morse.colorado.edu/~tlen5510/text/classwebch3.html
*/
if(f<150 || f>2000){
printf("Error: COST231 Hata model frequency range 150-2000MHz\n");
return 0;
exit(EXIT_FAILURE);
}
int C = 3; // 3dB for Urban
@@ -157,40 +157,49 @@ double SUIpathLoss(float f,float TxH, float RxH, float d, int mode){
mode 1 = Hilly + trees
mode 2 = Flat + trees OR hilly + light foliage
mode 3 = Flat + light foliage
http://www.cl.cam.ac.uk/research/dtg/lce-pub/public/vsa23/VTC05_Empirical.pdf
*/
d=d*1000; // km to m
if(f<1900 || f>11000){
printf("Error: SUI model frequency range 1.9-11GHz\n");
return 0;
exit(EXIT_FAILURE);
}
// Terrain mode A is default
double a = 4.6;
double b = 0.0075;
double c = 12.6;
double s = 10.6;
double c = 12.6;
double s = 10.6; // Optional fading value
int XhCF = -10.8;
if(mode==2){
a=4.0;
b=0.0065;
c=17.1;
s=9.6;
s=6; // average
}
if(mode==3){
a=3.6;
b=0.005;
c=20;
s=8.2;
s=3; // Optimistic
XhCF = -20;
}
double d0 = 100;
double A = 20 * log10((4*M_PI*d0)/(300/f));
double y = (a - b * TxH) + (c/TxH);
double y = (a - b * TxH) + c / TxH;
double Xf = 6 * log10(f/2000);
double Xh = XhCF * log10(RxH/2);
return A + (10*y*log10(d/d0)) + Xf + Xh + s;
}
double ECC33pathLoss(float f,float TxH, float RxH, float d, int mode){
if(f<700 || f>3500){
printf("Error: ECC33 model frequency range 700-3500MHz\n");
exit(EXIT_FAILURE);
}
// MHz to GHz
f=f/1000;
@@ -206,19 +215,29 @@ double ECC33pathLoss(float f,float TxH, float RxH, float d, int mode){
}
double EricssonpathLoss(float f,float TxH, float RxH, float d, int mode){
double a0=36.2, a1=30.2, a2=12, a3=0.1;
if(mode==2){ // Med loss
/*
http://research.ijcaonline.org/volume84/number7/pxc3892830.pdf
AKA Ericsson 9999 model
*/
// Default is Urban which bizarrely has lowest loss
double a0=36.2, a1=30.2, a2=-12, a3=0.1;
if(f<150 || f>3500){
printf("Error: Ericsson9999 model frequency range 150-3500MHz\n");
exit(EXIT_FAILURE);
}
if(mode==2){ // Suburban / Med loss
a0=43.2;
a1=68.93;
}
if(mode==3){ // Low loss
if(mode==1){ // "Rural" but has highest loss according to Ericsson.
a0=45.95;
a1=100.6;
}
double g1 = (11.75 * RxH) * (11.75 * RxH);
double g2 = (44.49 * log10(f)) - 4.78 * ((log10(f) * log10(f)));
double PL = a0+ a1 * log10(d) + a2 * log10(TxH) + a3 * log10(TxH) * log10(d) - (3.2 * log10(g1)) + g2;
return PL;
return a0 + a1 * log10(d) + a2 * log10(TxH) + a3 * log10(TxH) * log10(d) - (3.2 * log10(g1)) + g2;
}
double FSPLpathLoss(float f, float d){