A Discrete-Event Network Simulator
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jakes-propagation-loss-model.cc
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1/*
2 * Copyright (c) 2012 Telum (www.telum.ru)
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation;
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 * Author: Kirill Andreev <andreev@telum.ru>
18 */
19
21
22#include "ns3/double.h"
23#include "ns3/log.h"
24
25namespace ns3
26{
27
29
30NS_OBJECT_ENSURE_REGISTERED(JakesPropagationLossModel);
31
33{
34 m_uniformVariable = CreateObject<UniformRandomVariable>();
35 m_uniformVariable->SetAttribute("Min", DoubleValue(-1.0 * M_PI));
37}
38
40{
41}
42
45{
46 static TypeId tid = TypeId("ns3::JakesPropagationLossModel")
48 .SetGroupName("Propagation")
49 .AddConstructor<JakesPropagationLossModel>();
50 return tid;
51}
52
53void
55{
56 m_uniformVariable = nullptr;
57 m_propagationCache.Cleanup();
58}
59
60double
63 Ptr<MobilityModel> b) const
64{
65 Ptr<JakesProcess> pathData = m_propagationCache.GetPathData(
66 a,
67 b,
68 0 );
69 if (!pathData)
70 {
71 pathData = CreateObject<JakesProcess>();
72 pathData->SetPropagationLossModel(this);
73 m_propagationCache.AddPathData(
74 pathData,
75 a,
76 b,
77 0 );
78 }
79 return txPowerDbm + pathData->GetChannelGainDb();
80}
81
84{
85 return m_uniformVariable;
86}
87
88int64_t
90{
92 return 1;
93}
94
95} // namespace ns3
This class can be used to hold variables of floating point type such as 'double' or 'float'.
Definition: double.h:42
a Jakes narrowband propagation model.
Ptr< UniformRandomVariable > GetUniformRandomVariable() const
Get the underlying RNG stream.
int64_t DoAssignStreams(int64_t stream) override
Assign a fixed random variable stream number to the random variables used by this model.
static TypeId GetTypeId()
Get the type ID.
PropagationCache< JakesProcess > m_propagationCache
Propagation cache.
Ptr< UniformRandomVariable > m_uniformVariable
random stream
double DoCalcRxPower(double txPowerDbm, Ptr< MobilityModel > a, Ptr< MobilityModel > b) const override
PropagationLossModel.
void DoDispose() override
Destructor implementation.
void SetAttribute(std::string name, const AttributeValue &value)
Set a single attribute, raising fatal errors if unsuccessful.
Definition: object-base.cc:211
Models the propagation loss through a transmission medium.
Smart pointer class similar to boost::intrusive_ptr.
Definition: ptr.h:77
void SetStream(int64_t stream)
Specifies the stream number for the RngStream.
a unique identifier for an interface.
Definition: type-id.h:59
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:932
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:202
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition: object-base.h:46
Every class exported by the ns3 library is enclosed in the ns3 namespace.