|
OPNET Technologies
7255 Woodmont Avenue
Bethesda, MD 20814
Tel: 240-497-3000
Fax: 240-497-3001
E-mail:
mailto:info@opnet.com
Web: http://www.opnet.com/home.html
|
University: Institute of Business Administration (IBA)
Professor:
Dr. Sayeed Ghani,
Associate Dean, FCS
Licensee Representative: Waseem
Arain, Faculty Member, FCS
Department: Faculty of Computer
Sciences (FCS)
Laboratory: Telecommunication
Research Laboratory (TRL)
PhD Scholars using OPNET: Waseem
Arain,
Faisal Iradat, Raza Abedi and Abdul Wajed
Presently following research projects are
underway in which we are using OPNET in the Telecommunication Research Lab (TRL)
where PhD scholars are working in diverse areas of research such as
network performance, routing protocols in MANET, LTE, WiMax etc. under
the supervision of Dr. Sayeed Ghani who holds PhD from Columbia
University and MS and BS in Electrical Engineering from MIT.
|
|
Prioritized Service
with Queuing for Multi-Service Wireless Networks |
|
Dr. Sayeed Ghani |
|
|
|
Abstract: Wireless networks today
support multiple classes of service with a variety of QOS requirements.
This paper analyzes the impact of a novel preemptive priority based
Prioritized Service resource allocation model with Queuing (PSQ) for
preempted traffic. It compares this model with traditional Complete
Portioning, Complete Sharing and Hybrid Sharing schemes using both
numerical techniques and simulation. The analysis is first carried out
for a wired environment then extended to an integrated WiMax / WiFi
environment via simulation using OPNET. The results indicate the
usefulness and limitations of the PSQ model.
Keywords: Prioritized Service with Queuing (PSQ), multi-server Queuing
network, Complete Sharing, Wi-Fi, Wi-Max networks. |
|
|
|
Packet Loss Simulation
in Wireless Network for Real Time Video Traffic using OPNET |
|
Raza H. Abedi and Dr. Sayeed
Ghani |
|
|
|
Abstract: Accurately analyzing the packet
loss pattern in real-time transmission such as video download over an
unreliable and error prone wireless media is highly imperative in order
to achieve and maintain the desired quality of service in multimedia
transfers. Losses in wireless network commonly occur due to network
congestion, channel noise and other outside interference. In order to
study the packet loss pattern and its overall impact on quality of
service, the first step is to build a network model that accurately
displays the various states of the network. Markov chain models are most
commonly used in this type of scenarios. We have used a simplified
version of Markov chain model known as two state Gilbert model to
visualize our problem. OPNET is used as a simulation tool to analyze the
problem and compare the results. |
|
|
|
Delay and Throughput
Analysis for Multihop Wireless Mesh Networks |
|
Abdul Wajedand Dr. Sayeed Ghani |
|
|
|
Abstract: Wireless mesh networks (WMNs)
provide a scalable and robust means of communication. However throughput
in multihop WMNs has known to have serious limitations. The purpose of
this project is to simulate WMNs using OPNET and anlyze the performance
of with various classes of traffics such as voice, video and data. The
results will be compared with simplified theoretical models and
suggestions for optimizing the network will be given. |
|
|
|
Emergency Call
Admission in LTE using Prioritized Sharing and Complete Partitioning of
Channels |
|
Zahid Fraz and Dr. Sayeed
Ghani |
|
|
|
Abstract: This project looks at the
possible scenarios for call admission of emergency calls in LTE
networks. We consider various admission policies such as complete
portioning and priority sharing approaches for channel resource sharing,
and look at the call blocking probabilities between normal calls and
high priority emergency calls. The simulations based on OPNET simulator
will be compared with a theoretical model based on two dimensional
Markov chain.
|
|
|
|
Performance Analysis of
WiMAX Networks |
|
Muhammad Zohaib Akram and
Dr. Sayeed Ghani |
|
|
|
Abstract: WiMAX has provided a platform to
address the high data rates required for fixed, nomadic and mobile
users. However most practical deployments leave some areas which demand
for better utilization of available resources. The objective of this
project is to simulate WiMAX networks based closely on practical
deployed networks in Pakistan with 100 plus nodes and to subsequently
analyze the performance bottlenecks and propose ways of optimizing the
network performance. |
|
|
|
Updated 20/04/2011 |
|
|
