How to Implement OFDM Wireless Communication in OMNeT++

To implement the OFDM which is Orthogonal Frequency-Division Multiplexing Wireless Communication in OMNeT++ has wants to embrace setting up an imitation situation that contains OFDM-enabled nodes, essential network models, and applying OFDM-specific communication proprieties. To provision the OFDM functionalities to comprehensive the INET framework. Now given below stages is to get idea to start with an elementary OFDM wireless communication.

Step-by-Step Implementations:

Step 1: Install OMNeT++ and INET Framework

1. Download OMNeT++:
   • In the modest version move to download OMNeT++.
2. Install OMNeT++:
   • For the operating system we obey the installation instructions.
3. Download and Install INET Framework:
   • The INET framework offers models in place of internet rules and is often used through OMNeT++.
   • From the INET website we can download it.

Step 2: Set Up Your Project

1. Create a New OMNeT++ Project:
   • Open the OMNeT++ IDE.
   • Go to File -> New -> OMNeT++ Project.
   • Choose the options and put a project name.
2. Set Up Directory Structure
   • Make sure the project have the required folders, like src in place of source files and simulations for NED files and configuration.
3. Add INET to Your Project:
   • To the right-click on the project in the Project Explorer.
   • Choose Properties -> Project References.
   • Form the box for INET.

Step 3: Define OFDM Network Models Using NED

1. Create NED Files:

• In the src directory, make a new NED file like OFDMNetwork.ned.
• State the network topology in the NED file. The following code is sample example:

package ofdm;

import inet.node.inet.StandardHost;

import inet.node.inet.Router;

import inet.networklayer.configurator.ipv4.Ipv4NetworkConfigurator;

import inet.physicallayer.common.packetlevel.RadioMedium;

import inet.mobility.static.StationaryMobility;

network OFDMNetwork

{

parameters:

int numNodes = default(5);

types:

channel radioChannel extends RadioMedium {}

submodules:

configurator: Ipv4NetworkConfigurator {

@display(“p=100,100”);

}

router: Router {

@display(“p=200,100”);

}

node[numNodes]: StandardHost {

@display(“p=300+100*i,200”);

mobility.typename = “StationaryMobility”;

}

radioMedium: radioChannel {

@display(“p=400,100”);

}

connections allowunconnected:

for i=0..numNodes-1 {

node[i].wlan[0] <–> radioMedium <–> router.wlan[0];

}

}

Step 4: Implement OFDM Communication Logic

1. Extend INET’s Physical Layer for OFDM:
   • To support OFDM functionalities is to be extended by INET’s physical layer. For the want to form new classes or encompass existing ones to take in OFDM modulation and demodulation.
2. Create C++ Modules for OFDM Communication:
   • In the src directory, produce new C++ classes such as OFDMTransmitter.cc and OFDMReceiver.cc.
   • Embrace essential OMNeT++ headers and outline the OFDM communication logic.
3. OFDM Transmitter Implementation:

#include <omnetpp.h>

#include “inet/physicallayer/common/packetlevel/FlatReceiverBase.h”

#include “inet/physicallayer/common/packetlevel/FlatTransmitterBase.h”

#include “inet/physicallayer/contract/packetlevel/INarrowbandTransmission.h”

using namespace omnetpp;

using namespace inet;

using namespace inet::physicallayer;

class OFDMTransmitter : public FlatTransmitterBase

{

protected:

virtual void initialize(int stage) override;

virtual void transmitPacket(Packet *packet) override;

};

Define_Module(OFDMTransmitter);

void OFDMTransmitter::initialize(int stage)

{

FlatTransmitterBase::initialize(stage);

// Additional initialization for OFDM if needed

}

void OFDMTransmitter::transmitPacket(Packet *packet)

{

// Implement OFDM transmission logic

EV << “Transmitting packet with OFDM modulation: ” << packet->getName() << endl;

FlatTransmitterBase::transmitPacket(packet);

}

1. OFDM Receiver Implementation:

#include <omnetpp.h>

#include “inet/physicallayer/common/packetlevel/FlatReceiverBase.h”

#include “inet/physicallayer/contract/packetlevel/INarrowbandTransmission.h”

using namespace omnetpp;

using namespace inet;

using namespace inet::physicallayer;

class OFDMReceiver : public FlatReceiverBase

{

protected:

virtual void initialize(int stage) override;

virtual bool isPacketOk(Packet *packet) const override;

};

Define_Module(OFDMReceiver);

void OFDMReceiver::initialize(int stage)

{

FlatReceiverBase::initialize(stage);

// Additional initialization for OFDM if needed

}

bool OFDMReceiver::isPacketOk(Packet *packet) const

{

// Implement OFDM reception logic and error checking

EV << “Receiving packet with OFDM demodulation: ” << packet->getName() << endl;

return FlatReceiverBase::isPacketOk(packet);

}

Step 5: Integrate OFDM Modules into Network Model

1. Modify NED File to Use OFDM Modules:
   • Inform the NED file to use the tradition OFDM transmitter and receiver modules:

package ofdm;

import inet.node.inet.StandardHost;

import inet.node.inet.Router;

import inet.networklayer.configurator.ipv4.Ipv4NetworkConfigurator;

import inet.physicallayer.common.packetlevel.RadioMedium;

import inet.mobility.static.StationaryMobility;

import inet.physicallayer.contract.packetlevel.IRadio;

network OFDMNetwork

{

parameters:

int numNodes = default(5);

types:

channel radioChannel extends RadioMedium {}

submodules:

configurator: Ipv4NetworkConfigurator {

@display(“p=100,100”);

}

router: Router {

@display(“p=200,100”);

}

node[numNodes]: StandardHost {

@display(“p=300+100*i,200”);

mobility.typename = “StationaryMobility”;

@children:

wlan[0].radio.transmitter.typename = “OFDMTransmitter”;

wlan[0].radio.receiver.typename = “OFDMReceiver”;

}

radioMedium: radioChannel {

@display(“p=400,100”);

}

connections allowunconnected:

for i=0..numNodes-1 {

node[i].wlan[0] <–> radioMedium <–> router.wlan[0];

}

}

Step 6: Configure Simulation Parameters

1. Create omnetpp.ini:
   • To make an omnetpp.ini file in the simulations manual.
   •  Explain simulation parameters, like the duration and network parameters:

[General]

network = OFDMNetwork

sim-time-limit = 100s

# Mobility

**.node[*].mobility.bounds = “0,0,1000,1000”

# OFDM transmitter and receiver parameters

**.node[*].wlan[*].radio.transmitter.power = 20mW

**.node[*].wlan[*].radio.receiver.sensitivity = -85dBm

Step 7: Build and Run the Simulation

1. Build the Project:
   • In the OMNeT++ IDE, right-click on the project and chose Build Project.
2. Run the Simulation:
   • Go to Run -> Run Configurations.
   • Setting up a new run conformation for the project and run the simulation.

Step 8: Analyze Results

1. View Simulation Results:
   • Later the simulation concludes, use OMNeT++’s tools to analyse the results.
   • Open the ANF which is Analysis Framework to envision and read the data.

In the above drafts, we conclude to know how to analyse and embrace the OFDM Wireless Communication by using the tool OMNeT++. Now we had a wonderful ideas that is to offer the valuable notes about detailed in how to implement the OFDM wireless communication in OMNeT++.

For Implementation OF DM Wireless Communication in OMNeT++ you can enquire us and get best simulation results from our leading developers.