v1.3.7

Added propagation models and knife edge diffraction :)

cost.cpp

@@ -0,0 +1,41 @@
+/*****************************************************************************
+*  COST231-HATA MODEL for Signal Server by Alex Farrant                         *  
+*  30 December 2013										                     *
+*  This program is free software; you can redistribute it and/or modify it   *
+*  under the terms of the GNU General Public License as published by the     *
+*  Free Software Foundation; either version 2 of the License or any later    *
+*  version.								   								     *
+* 									    									 *
+*  This program is distributed in the hope that it will useful, but WITHOUT  *
+*  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or     *
+*  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License     *
+*  for more details.													     *
+*									     									 */
+
+#include <stdlib.h>
+#include <math.h>
+#include <iostream>
+
+using namespace std;
+
+double CostHataLinkdB(float f,float h_B, float h_M, float d){
+/*
+COST HATA URBAN model
+Frequency 1500 to 2000MHz
+h_B = Base station height 30 to 200m
+h_M = Mobile station height 1 to 10m
+Distance 1-20km
+*/
+
+	int C = 0; // 0dB for suburban
+	
+	float lh_M = log10(11.75*h_M);
+	float C_H = 3.2*lh_M*lh_M-4.97;
+	
+	float logf = log10(f);
+	
+    double dbloss = 46.3 + (33.9 * logf) - (13.82 * log10(h_B)) - C_H + (44.9 - 6.55 * log10(h_B)) * log10(d) + C;  
+
+
+	return dbloss;
+}