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Simulations of Wireless Networks using ns-3 to understand the impact of pathloss.

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Pathloss Simulation Using NS-3

This repository contains a series of NS-3 simulations designed for the Wireless Networks course assignment. The simulations create a network topology with multiple WiFi clients connected to an access point (AP), which in turn is connected to a server through point-to-point (p2p) links. The objective is to analyze the network behavior under various conditions, including file transfers and the use of different WiFi management features like RTS/CTS and rate adaptation.

Project Structure

The code is organized into separate files for each part of the assignment:

  • a.cc: Sets up the basic WiFi and p2p networks.
  • b.cc: Adds file download capabilities to each client and plots completion times.
  • c.cc: Integrates an upload application along with the download.
  • d.cc: Implements a path loss and fading model with MistrelHTManager for rate adaptation.
  • e.cc: Turns on RTS/CTS to analyze its effect on network performance.

Each part builds on the previous, adding complexity to the simulation.

Prerequisites

To run these simulations, you will need to have NS-3 installed on your machine. Follow the installation guide on the NS-3 website.

Running Simulations

To run any part of the assignment, navigate to your NS-3 project directory and use the following command:

./ns3 run "scratch/a --numClients=10" # Replace 'scratch/a' with the part you want to run.

Visualization

To visualize the network topology and packet flows, you can use NetAnim or other NS-3 supported visual tools. Instructions for setting up NetAnim can be found here.

I've plotted the download completion times using a Python script.

Plots

b

c

d

e

Screenshots

c

d

e

Contributions

Contributions are welcome. Please fork this repository, make your changes, and submit a pull request.

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Simulations of Wireless Networks using ns-3 to understand the impact of pathloss.

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