Electrical Engineering and Computer Science

University: The Catholic University of America

Professor: Dr. Mohammed Arozullah

Department: Department of Electrical Engineering and Computer Science

Teaching

EE/CSC  534: Communication and Computer Network Simulation

Syllabus

This course deals with simulation modeling, design and performance evaluation of communication networks. It presents simulation of network elements and overall networks. Simulated network elements include point-to-point, multicast and broadcast links, satellite and radio links, queue systems, and circuit and packet switches. Simulated overall networks include Local Area Networks (LAN), packet switched (X.25) networks, and Asynchronous Transfer Mode (ATM) based Broadband Integrated Services Digital Networks (BISDN), mobile radio and packet video networks. Development of simulation models for audio and video traffic sources and flow and congestion control algorithms. Discussion of methods of presentation, analysis, and interpretation of simulation results. This course uses OPNET simulation software packages to provide hands-on experience.

EE/CSC 531: Data Communications Networks

Syllabus

This course deals with basic principles of networking. More specifically, it covers the following topics:

1.     Network Architectures and Protocols

2.     OSI model and TCP/IP protocol suite

3.     Transmission media

4.     Protocols at the physical, data link, network and transport layers

5.     Multiplexing, error and congestion control

6.     Circuit and packet switching

7.     Local and metropolitan area networks

8.     Network security and distributed applications

 EE 652: Wireless Communications

Syllabus

It is intended to give an introduction to wireless communication engineering. It includes:

1.     Characterization of the radio environments

2.     Link and system performances and the cellular concept

3.     Study of the effect of the environment on the mobile systems and methods of mitigating degrading effects

4.     Analysis of state-of-the-art wireless communication technologies and systems

Research

Title:  Architecture and Protocol for Optical Packet Switching

      The proposed architecture of the switch consists of fiber delay lines, WDM devices, wavelength converters, and non-blocking optical switch. It incorporates short fiber delay line buffers at both the input and output. Separate buffers are provided to individual wavelengths by using WDM demultiplexers at each of the input lines of the switch. It also uses wavelength conversion. Routing tables with multiple routes with nearly the same delay are used. Also, reservation of link to next node for short time is to be used. Each arriving packet is processed in parallel with other packets as soon as it arrives. Statistics to be collected are link utilization, throughput, delay, and packet loss. Models of a number of architectures of the optical switch are being developed using OPNET Simulation Software packages.

Title: A Multiple Access Protocol for Multimedia Transmission over Wireless Networks

      It is proposed to develop multiple access protocols for multimedia transmission over wireless networks. The network consists of a base station and a number of mobile stations. It is also proposed to evaluate performance of the network. The base station consists of transmitters, receivers, multiple queues; Server Queues Function Blocks, decision-making blocks, queue management and other function blocks. The mobile stations consist of a number of decision-making blocks, buffer, queue management and Traffic Packet Process Functions. A model of this network has been developed using Opnet simulation software packages. This model is being exercised to obtain performance in terms of delay, throughput and packet loss ratio of each type of traffic for a number of traffic strengths.This work almost complete and publications are being redied.

Last reviewed: February 22, 2010