1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ 2 /* 3 * Copyright (c) 2009 University of Washington 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation; 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write to the Free Software 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 17 * 18 * Author: Leonard Tracy <lentracy@gmail.com> 19 */ 20 21 #ifndef UAN_PROP_MODEL_THORP_H 22 #define UAN_PROP_MODEL_THORP_H 23 24 #include "uan-prop-model.h" 25 26 namespace ns3 { 27 28 class UanTxMode; 29 30 /** 31 * \ingroup uan 32 * 33 * Uses Thorp's approximation to compute pathloss. Assumes implulse PDP. 34 */ 35 class UanPropModelThorp : public UanPropModel 36 { 37 public: 38 /** Default constructor. */ 39 UanPropModelThorp (); 40 /** Destructor */ 41 virtual ~UanPropModelThorp (); 42 43 /** 44 * Register this type. 45 * \return The object TypeId. 46 */ 47 static TypeId GetTypeId (void); 48 49 // Inherited methods 50 virtual double GetPathLossDb (Ptr<MobilityModel> a, Ptr<MobilityModel> b, UanTxMode mode); 51 virtual UanPdp GetPdp (Ptr<MobilityModel> a, Ptr<MobilityModel> b, UanTxMode mode); 52 virtual Time GetDelay (Ptr<MobilityModel> a, Ptr<MobilityModel> b, UanTxMode mode); 53 54 private: 55 /** 56 * Get the attenuation in dB / 1000 yards. 57 * \param freqKhz The channel center frequency, in kHz. 58 * \return The attenuation, in dB / 1000 yards. 59 */ 60 double GetAttenDbKyd (double freqKhz); 61 /** 62 * Get the attenuation in dB / km. 63 * \param freqKhz The channel center frequency, in kHz. 64 * \return The attenuation, in dB/km. 65 */ 66 double GetAttenDbKm (double freqKhz); 67 68 double m_SpreadCoef; //!< Spreading coefficient used in calculation of Thorp's approximation. 69 70 }; // class UanPropModelThorp 71 72 } // namespace ns3 73 74 #endif /* UAN_PROP_MODEL_THORP_H */ 75