Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 42 for “"OPNET"”.
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Integration of rain fade into OPNET
OPNET is one of the widely used modelling and simulation software packages in the telecommunications industry for planning, design, and research and development. In the wireless modeller module, it uses common propagation models to model radio propagation. It is also possible for users to include …
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Pokročilé modelování chování protokolu SNMP v simulačním prostředí OPNET Modeler
… a jeho implementací do simulačního prostředí Opnet Modeler. Pro implementaci byla vybrána databáze DiffServMIB, která popisuje komponenty technologie rozlišovaných služeb. Diplomová práce obsahuje podrobný popis možností využití databáze DiffServMIB pro řízení zpracování provozu a návrh …
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Evaluating Standard and Custom Applications in IPv6 Within a Simulation Framework
… environments before actual physical deployment. OPNET Modeler provides the capability to simulate the IPv6 protocol and System-in-the-Loop, an add-on module, allows for real communication traffic from physical devices to be converted and sent over the simulated network. This research has …
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Telecommunication of stabilizing signals in power systems
… that are characterized in this project using OPNET Modeler. OPNET Modeler is also used to characterize the number of dropped packets.;As a case study, we consider a two-area four-generator (2A4G) and explore the role of communication delay on system stability. Those delays play an important …
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Radio Resource Management for Satellite UMTS. Dynamic scheduling algorithm for a UMTS-compatible satellite network.
… between different functional entities. An OPNET simulation model with a complete network protocol stack is developed to validate the performance of the scheduling algorithms implemented in the satellite network. Different types of traffic are considered for the OPNET simulation, such as the …
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A Network System Level Simulator for Investigating the Interworking of Wireless LAN and 3G Mobile Systems
… in the cellular network. This research used OPNET™ to design, implement, and test a network system level simulation environment to allow investigators to study the issues and trade-offs for interworking the infrastructure-based WLAN technologies into 3G mobile subscriber cellular systems. The …
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Experimental analysis and modelling of an information embedded power system
… using Optimized Network Engineering Tools (OPNET). OPNET is the industry‘s leading simulator specialized for network research and development. Finally, a new protocol has been developed based on DNP3 protocol to reliably and securely transmit power system data for IEPS-W.
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Security in Packet-Switched Land Mobile Radio Backbone Networks
… different security solutions. Simulation with OPNET Modeler was used to evaluate how the various security schemes affect voice communication and network performance as a whole. Since OPNET Modeler does not provide models of security functions, the source code of the transceiver system models …
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Utilization Of A Large-Scale Wireless Sensor Network For Intrusion Detection And Border Surveillance
… studies have been carried out using the OPNET to verify the theoretical analysis and to find an optimal node deployment scheme that is robust and efficient by incorporating geographical coordination in the design. Measures such as adding camera and range-extended antenna to each node have …
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Unmanned Aeronautical Ad-hoc Networks: Enhancing the Reactive-Greedy-Reactive Protocol and Introducing a New Mobility Model
… mobility model. Simulations performed using the OPNET simulator show that Optimized-RGR outperforms RGR. There is a 5.3% increase in Packet Delivery Ratio at a negligible cost in latency. Furthermore, realistic mobility models, including EGM, show a lot of network partitioning. Therefore, this …
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Optimizing ad-hoc on-demand distance vector (AODV) routing protocol using geographical location data
… Distance, LAR Zone, GeoAODV, and GeoAODV Rotate. OPNET Modeler version 16.0 was used to implement each of these mechanisms and compare their performance via network simulations. The results indicate that location-aided routing can significantly reduce the aforementioned control-packet overhead.
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Performance of a ATM Lan switching fabric
… of the switching fabric architecture one uses OPNET communication simulation software. Some parameters including the throughputs, the transfer (the switching fabric) delay, the switching overflow and the packet size in the buffer (the input buffer and the output buffer) are implemented through …
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Link Establishment in Ad Hoc Networks Using Smart Antennas
… developed using the discrete event simulator OPNET ModelerTM 8.0. Simulation scenarios have been created for single hop as well as multihop networks. From the results of the simulation we observe that although the nodes forming the extended link experience decrease in end-to-end delay, the …
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The Design and Analysis of a Wireless LAN Relayed Frame Protocol Extension
… wLAN protocol, the network simulation software, OPNET, was used. An existing model of IEEE 802.11 was enhanced with the additional logic introduced by the protocol extension.</p> <p>Through simulation, it is proved that the logic presented by the protocol extension is able to function. In …
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Mobile Wireless System Interworking with 3G and Packet Aggregation for Wireless LAN
… were two-fold. First was the development of an OPNET simulation environment suitable for evaluation of future protocols supporting tightly coupled, heterogeneous WLAN and 3G systems. Secondly was the implementation and testing of the AGG-MAC protocol which aggregates suboptimal size packets …
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MAC architecture for broadband satellite access systems
… of the devised system. Finally, we build an OPNET simulation model to demonstrate quantitative system operation and serve as a nucleus model for possible future research involving performance optimization in satellite networks over the devised architecture.
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Heterogeneous Networking for Beyond 3G system in a High-Speed Train Environment. Investigation of handover procedures in a high-speed train environment and adoption of a pattern classification neural-networks approach for handover management
… be specified. The approach is then simulated in OPNET and the findings are then presented and discussed. The opportunity of exploring the prospect of employing neural networks (NN) for handover is also undertaken. This study focuses specifically on the use of pattern classification neural …
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Σχεδιασμός και υλοποίηση συστήματος διαχείρισης και ενοποίησης διαφορετικών ταυτοτήτων χρηστών σε δίκτυα νέας γενιάς
… που έγιναν στο περιβάλλον εξομοίωσης OPNET. Τέλος σημειώνεται πως ένα δοκιμαστικό σενάριο χρήσης του συστήματος υλοποιήθηκε σε περιβάλλον Ruby on Rails.
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Evaluation of research education networks in Zambia a case study: Zambia research education networks(ZAMREN)
… included questionnaires, Ms-excel, SPSS and Opnet 14.5 network simulation software. The findings for objective (i); 19% of ZAMREN affiliates faced a challenge of power outage, 16% challenge of funding, 16% fibre cuts (damages), 11% high internet tariffs, 7% lack of technical ICT know-how, 7% …
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Evaluation of research education networks in Zambia a case study: Zambia research education networks(ZAMREN)
… included questionnaires, Ms-excel, SPSS and Opnet 14.5 network simulation software. The findings for objective (i); 19% of ZAMREN affiliates faced a challenge of power outage, 16% challenge of funding, 16% fibre cuts (damages), 11% high internet tariffs, 7% lack of technical ICT know-how, 7% …
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