Abstract At present, Traffic simulation has become the most widely used tool in operational research and system analysis. This paper studies VANET’s vehicle movement modeling theory Intelligent Transportation System. It build Car model by OPNET Modeler soft. simulates VANET communication process, evaluates entire performance of network, which can offer reference to designing optimizing Vehicle ...

* This research was funded in part by the Canadian Foundation for Innovation Grant 910-99. Abstract In this paper we describe simulation of wireless data networks using OPNET. We give a detailed description of the network model that we used to investigate the impact of self-similar traffic on performance of a cellular digital packet data (CDPD) network. We use OPNET Modeler and its object-orien...

Influenced by recent international terrorist attacks, security has become a very important matter. Government is investing a great amount of money to improve security, as big companies do. One of the most important security fields, where part of the security investment is focused on, is information security. All networks and computer systems where information is stored are becoming an important...

A network whose interconnections between nodes are implemented without using wires is referred to as wireless network and is usually related to a telecommunication network. As related to wired local area network, wireless channels are error-prone. Performance study and optimization of Wireless Local Area Network (WLAN) becomes more essential as its gaining popularity. For performance modelling ...

DVB-T2 is offering a new way for broadcasting value-added services to end users, such as High Definition (HD) TV and 3D TV. Thanks to the advances made in digital signal processing, and specifically in channel coding, DVBT2 brings an increased transfer capacity of 50% and a new flexibility in services’ broadcasting in contrast with the first generation DVB-T standard. As DVB-T2 is still in depl...

This paper investigates the use of femtocell as a solution to improve indoor coverage and off-load mobile data indoors on the macro cellular networks. Specifically, the article deals with a performance analysis of femtocell in an indoor cellular network. This is achieved by designing and modelling femto-cell network in an indoor cellular network using OPNET modelling and simulation software. Th...