Projects
UARA in edge routers: An effective approach to user fairness and traffic shaping

Date Completed: June 2009

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A Presence-based Messaging Application

Date Completed: December 2009

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Simulation of Slotted ALOHA

Date Completed: November 2009

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Peer-to-Peer Traffic

Date Completed: August 2009

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BitTorrent

Date Completed: July 2009

BitTorrent protocol has emerged as the most popular P2P protocol over the past years. The core BitTorrent protocol has been designed and implemented by Bram Cohen in 2001.

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Congestion Avoidance and Control

Date Completed: June 2009

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End-to-end Quality of Service in IP Multimedia Subsystem using DiffServ

Date Completed: June 2006

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A Study on IP Multimedia Subsystem Architecture & its Application Servers

Date Completed: June 2006

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UML modeling of SIP and RIP protocols

Date Completed: April 2006

Modeling of “Session Initiation Protocol -SIP” & “Routing Information Protocol-RIP” using UML in I-Logix’s Rhapsody

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A Study of WiMax QoS Mechanisms

Date Completed: April 2006

A comprehensive analysis of more than ten published articles of WiMax QoS mechanisms in MAC and PHY layers

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Economics: The International Monetary Fund

Date Completed: January 2006

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IP Telephony: The technology which will see off the PSTN

Date Completed: December 2005

Project Description:
This project was an exercise to write an introductory article about a subject, regardless of level of expertise in that specific subject. Some people might find such a viewpoint interesing; hence the article is online.

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Vigenere Cipher --A Case Selected for Properly Designing a Software before Realizing It

Date Completed: December 2005

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IP Telephony

Date Completed: May 2005

Project Description:
This project builds on the work that went to the implementation part of my B.S. thesis. It covers technologies such as: Session Initiation Protocol, DiffServ QoS Architecture, SIP Network Modules Development, and Network Simulation. I have written a research paper based on the outcomes of this project with the title: "Utilizing DiffServ and SIP Contact Header for Real-time Fax Traffic Engineering"

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Simulink and Code Generation using Real-Time Workshop : Rayleigh Fading Channel

Date Completed: September 18, 2003

Fading is one of the important obstacles which limits the wireless transmission. Deep fading will cause loss of signal at the receiver. The transmitted signal will arrive at the receiver antenna through multiple paths which causes what is known as multipath fading. Each path has its own delay and attenuation and the received signal amplitude is the collective effect of the signals arrived through different paths.

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Simulator of a New Approach in Matrix Inversion Calculation: "Conical Systolic Array"

Date Completed: September 03, 2003

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Optimization Techniques in Electromagnetic Problems

Date Completed: August 05, 2003

The following papers are the results of a cooperation between me and Dr.Lotfi, the antenna and communications circuits labs instructor. My work, for the main part, was helping in the implementation of the optimization algorithms in the projects and also comparing the obtained results with the ones produced by HP-HFSS software. I also had the opportunity to consult with Prof. Hojjat Kashani ,my Antenna course instructor, in the areas of antennas and microwave devices. The results of the application of the mentioned optimization techniques to some electromagnetic problems are documented in the following papers.

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DSP : DSP Educational Package

Date Completed: June 09, 2003

This project has been conducted in a teamwork manner. Some important concepts of an introductory course on DSP were chosen. First, few were responsible for implementing the code in Matlab using M-files, and at the next stage, others were responsible for transferring the code to GUIs so that the users can enjoy the comfort of windows-based execution. This package was supposed to serve as an educational aid package for the DSP course at MS level and the book "Discrete-time signal processing" by: Alan V. Oppenheim, Roland W. Schafer, and John R. Buck was chosen as the reference.

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QPSK Modulator/Demodulator

Date Completed: April 10, 2003

This circuit is an improved version of classical QPSK modulator/demodulator designs in terms of costs. Based on common CMOS logic, it needs no frequency or phase adjustments.

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Electronics : Wien Bridge Oscillator
Date Completed: February 06, 2003

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Linear Control: Position Control Systems Response Optimization
Date Completed: November 20, 2002

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