2.5 - Major refactor

models/ericsson.cc

@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+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
+	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 == 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)));
+
+	return a0 + a1 * log10(d) + a2 * log10(TxH) +
+	    a3 * log10(TxH) * log10(d) - (3.2 * log10(g1)) + g2;
+}