Tag Archive: 'opnet tutorials'

A Novel 2D Urban Map Search Framework Based on Attributed Graph Matching

This paper presents a novel framework for urban map search. The search capabilities of the existing GIS systems are restricted to text-based search, neglecting significant topological and semantic information. We propose a framework that aims to extend the search capabilities by offering sketch-based search. Initially, the urban maps are processed in an offline step in […]

Reach enhancement of 100% for a DP-64QAM super-channel using MC-DBP

A digital coherent super-receiver enables the reception and demodulation of a 7×10GBd DP-64QAM Nyquist spaced super-channel.Multi-channel DBP provides a 100% improvement in reach from 640km to 1280km of SSMF, with an ISD of 9.15b/s/Hz.

Group RNTI for Multi-Users Multiplexing Radio Voice Transmission for Enhancing Voice Capacity over LTE in PMR Context

The Multi-users Multiplexing Radio Voice Transmission method [1] is used for reducing the data overhead of Voice over Long Term Evolution (VoLTE) in the Professional Mobile Radio (PMR) context. In the Multi-users Multiplexing Radio Voice Transmission method, voice packets from different users having the same Modulation and Coding Scheme (MCS) can be clustered into one […]

Comparative Analysis of Protocol RIP, OSPF, RIGRP and IGRP for Service Video Conferencing, E-mail, FTP, HTTP

In this study we present a simulation based comparative performance analysis between RIP, OSPF, EIGRP and IGRP for real time applications by using OPNET. The evaluation is done based on different aspects such as packet delay variation, packet end-to-end delay as well as video traffic, download response time, upload response time in E-mail, FTP, page response […]

Performance study of the dual-stack mobile IP protocols in the evolving mobile internet

The transition from IPv4 to IPv6 is an inexorable trend in the development of Internet. However, since IPv4 has been widely deployed for many years, it is mandatory that the existing IPv4 and the newly deployed IPv6 coexist and interoperate seamlessly. With the study of various mechanisms proposed for the interoperability between IPv4 and IPv6, […]

Characterization of Wireless Mesh Network performance in an experimental test bed

Studies in Wireless Mesh Networks have often focused on the comparison of various mesh protocols, or the design of new mesh protocols in a simulation environment (such as NS2, OPNET etc.). However the results obtained in a simulation environment are sometimes not valid in a real site where the network is meant to be deployed. This paper […]

Cognitive Access Point to Handle Delay Sensitive Traffic in WLANs

Over the last few years, the widespread use of wireless local area networks (WLANs) continues to gain more and more impetus. Due to the increase in variety of multimedia applications such as voice, video and gaming traffic, it is paramount to develop a mechanism for the quality of service (QoS) to support different types of […]

A measurement model for trustworthiness of information on social network services

Due to the spread of unreliable online information on social network services (SNS), the users are faced with a difficult problem for determining if the information is trustworthy or not. At present, the users should make a decision overall by themselves for trustworthiness of information. Therefore, we need a way to systematically evaluate trustworthiness of information on […]

CoopRED: Cooperative RED for software defined networks

Recently, Internet is an essential part for human life, and several problems lead Future Internet. Software Defined Networks (SDN) is a representative approach in Future Internet. We propose Cooperative Random Early Detection (CoopRED) to avoid inefficiency in core routers when incoming traffic generates congestion. Our scheme selects packets that will be dropped in the bottleneck link, and […]

Seamless integration of Cloud and Fog networks

This work provides a way to merge Cloud Computing infrastructures with traditional or legacy network deployments, leveraging the best in both worlds and enabling a logically centralized control for it. A solution is proposed to extend existing Cloud Computing software stacks so they are able to manage networks outside the Cloud Computing infrastructure, by extending the internal, virtualized network […]

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