A guide to simulation (2nd ed.)
A guide to simulation (2nd ed.)
Model generation issues in a simulation support environment
WSC' 90 Proceedings of the 22nd conference on Winter simulation
Implementing Voice over IP
Parallel and distributed simulation: an overview
ISCC '95 Proceedings of the IEEE Symposium on Computers and Communications (ISCC'95)
Modeling and Simulation of Active Networks
SS '01 Proceedings of the 34th Annual Simulation Symposium (SS01)
Principles of Object-Oriented Modeling and Simulation with Modelica 2.1
Principles of Object-Oriented Modeling and Simulation with Modelica 2.1
NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
VoIP capacity analysis in cognitive radio system
IEEE Communications Letters
Simulation-Based Comparison: An Overview and Case Study
UKSIM '10 Proceedings of the 2010 12th International Conference on Computer Modelling and Simulation
Design science in information systems research
MIS Quarterly
A survey of spectrum sensing algorithms for cognitive radio applications
IEEE Communications Surveys & Tutorials
Delay Performance Analysis for Supporting Real-Time Traffic in a Cognitive Radio Sensor Network
IEEE Transactions on Wireless Communications
On credibility of simulation studies of telecommunication networks
IEEE Communications Magazine
Choosing the right model: conceptual modeling for simulation
Proceedings of the Winter Simulation Conference
Advanced tutorial: overview of simulation world views
Proceedings of the Winter Simulation Conference
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Rapid growth followed by increasing popularity in VoIP systems has witnessed rollout to new services and applications in emerging technologies like Cognitive Radio Networks (CRN). The stringent QoS requirements in VoIP coupled with the complexities in CRN have initiated intensive research in the field of performance analysis and optimizations guided by simulation results. However, in the absence of any standard model of VoIP over CRN, accuracy and credibility of the simulation output are strongly dependent on proper design of the simulation model. The objective of this paper is to build standard models for VoIP in CRN and successfully implement VoIP applications over CRN domain, which will serve as initial point for development with respect to all future simulation studies in VoIP over CRN category. Initially, models of VoIP in CRN are developed using OPNET Modeler 16.0.A following distributed architecture in single-channel and multi-channel scenarios. The work is extended by designing VoIP over CRN model in Visual C++ adhering to the principles of centralized architecture. The models are validated by comparison of simulation results obtained in both platforms. Extensive analysis of simulation results in the developed models indicates significant trends in VoIP QoS metrics with variation in CRN parameters.