Journal ArticleDOI
Efficient wireless network simulations with detailed propagation models
TLDR
The impact of the accuracy of the wireless channel model on the accuracyof the results and on the execution time of large-scale network models is described and means to reduce the runtime execution when deploying such detailed propagation models are introduced.Abstract:
Accurate simulation of wireless networks requires realistic models of the channel propagation medium. The widely used free space model is computationally efficient but ignores many attenuation components which affect wireless signal propagation. This paper describes the impact of the accuracy of the wireless channel model on the accuracy of the results and on the execution time of large-scale network models. It then introduces means to reduce the runtime execution when deploying such detailed propagation models.read more
Citations
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Proceedings ArticleDOI
Experimental evaluation of wireless simulation assumptions
TL;DR: A comprehensive review of six assumptions that are still part of many ad hoc network simulation studies, despite increasing awareness of the need to represent more realistic features, including hills, obstacles, link asymmetries, and unpredictable fading are provided.
Proceedings ArticleDOI
Directional virtual carrier sensing for directional antennas in mobile ad hoc networks
TL;DR: In this study, the performance of DVCS for mobile ad hoc networks is evaluated using simulation with a realistic directional antenna model and the full IP protocol stack and results showed that compared with omni-directional communication, DVCS improved network capacity by a factor of 3 to 4 for a 100 node ad hoc network.
The mistaken axioms of wireless-network research
TL;DR: It is argued that key “axioms” of these types of propagation models lead to simulation results that do not adequately reflect real behavior of ad-hoc networks, and hence to network protocols that may not work well (or at all) in reality.
Journal ArticleDOI
Deterministic Approach for Fast Simulations of Indoor Radio Wave Propagation
TL;DR: The new approach proposed herein is based on a finite difference formalism, i.e., the transmission line matrix (TLM), which provides an exact solution for the linear system whilst significantly reducing the computational complexity when compared with the time domain approach.
Journal ArticleDOI
Experimental Evaluation of Wireless Simulation Assumptions
TL;DR: This study is the first to approach this question by validating simulator performance with the results of real-world data, and evaluating the relative realism of common assumptions made in radio model design, identifying those which provide a reasonable approXimation of reality.
References
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Dynamic Source Routing in Ad Hoc Wireless Networks.
David B. Johnson,David A. Maltz +1 more
TL;DR: In this article, the authors present a protocol for routing in ad hoc networks that uses dynamic source routing, which adapts quickly to routing changes when host movement is frequent, yet requires little or no overhead during periods in which hosts move less frequently.
Book ChapterDOI
Dynamic Source Routing in Ad Hoc Wireless Networks
David B. Johnson,David A. Maltz +1 more
TL;DR: This paper presents a protocol for routing in ad hoc networks that uses dynamic source routing that adapts quickly to routing changes when host movement is frequent, yet requires little or no overhead during periods in which hosts move less frequently.
Proceedings ArticleDOI
Location-aided routing (LAR) in mobile ad hoc networks
Young-Bae Ko,Nitin H. Vaidya +1 more
TL;DR: An approach to utilize location information (for instance, obtained using the global positioning system) to improve performance of routing protocols for ad hoc networks is suggested.
Journal ArticleDOI
Parallel discrete event simulation
TL;DR: This article deals with the execution of a simulation program on a parallel computer by decomposing the simulation application into a set of concurrently executing processes and introduces interesting synchronization problems that are at the heart of the PDES problem.
Proceedings ArticleDOI
GloMoSim: a library for parallel simulation of large-scale wireless networks
TL;DR: The paper describes the GloMoSim library, addresses a number of issues relevant to its parallelization, and presents a set of experimental results on the IBM 9076 SP, a distributed memory multicomputer.