Download or read book Performance Evaluation of Spread Spectrum Based Wireless Ad Hoc Networks written by Alshah Hamid Raza and published by . This book was released on 2007 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance Evaluation of Ad Hoc Wireless Networks written by Abosede Mary Oyeniyi and published by . This book was released on 2009 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT : Mobile wireless ad hoc networks represent an important tool and technology to provide data communication in places where wired networks are not available. An ad hoc network is composed of mobile nodes without any infrastructure. Mobile nodes self organize themselves to form a network over radio links. Multicasting, which is the transmission of packets or data between a single sender and multiple receivers on a network, is used as a mode of transmitting information between these mobile nodes. In an ad hoc network, the benefits of using multicasting is that it is more bandwidth efficient than unicasting. In this thesis, a survey on some existing experimental studies and the performance metrics measured have been mentioned. Secondly, a prototype application-layer test bed program is implemented to investigate routing and how data is transmitted in wireless ad hoc networks. Thirdly, various experiments were performed in the indoor and outdoor environment varying distances and data sizes of packets. The results of this study show the actual performance of mobile wireless networks putting into consideration all natural effects that generally affect the wireless networks.
Download or read book Ad Hoc Networks written by Jun Zhi-zhong and published by Springer. This book was released on 2010-11-30 with total page 554 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ad hoc networks, which include a variety of autonomous networks for specific purposes, promise a broad range of civilian, commercial, and military applications. These networks were originally envisioned as collections of autonomous mobile or stationary nodes that dynamically auto-configure themselves into a wireless network without relying on any existing network infrastructure or centralized administration. With the significant advances in the last decade, the concept of ad hoc networks now covers an even broader scope, referring to the many types of autonomous wireless networks designed and deployed for a specific task or function, such as wireless sensor networks, vehicular networks, home networks, and so on. In contrast to the traditional wireless networking paradigm, such networks are all characterized by sporadic connections, highly error-prone communications, distributed autonomous operation, and fragile multi-hop relay paths. The new wireless networking paradigm necessitates reexamination of many established concepts and protocols, and calls for developing a new understanding of fundamental problems such as interference, mobility, connectivity, capacity, and security, among others. While it is essential to advance theoretical research on fundamental and practical research on efficient policies, algorithms and protocols, it is also critical to develop useful applications, experimental prototypes, and real-world deployments to achieve an immediate impact on society for the success of this wireless networking paradigm.
Download or read book Performance Analysis of Spread Spectrum Networks written by Szu-Lin Su and published by . This book was released on 1985 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ad Hoc Mobile and Wireless Networks written by Evangelos Kranakis and published by Springer Science & Business Media. This book was released on 2007-09-06 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 6th International Conference on Ad-Hoc Networks and Wireless, ADHOC-NOW 2007, held in Morelia, Mexico, in September 2007. The 21 revised full papers were carefully reviewed and selected from 50 submissions. The papers are organized in topical sections on routing, topology control, security and privacy, protocols, as well as quality of service and performance.
Download or read book The Handbook of Ad Hoc Wireless Networks written by Mohammad Ilyas and published by CRC Press. This book was released on 2017-12-19 with total page 621 pages. Available in PDF, EPUB and Kindle. Book excerpt: A relative newcomer to the field of wireless communications, ad hoc networking is growing quickly, both in its importance and its applications. With rapid advances in hardware, software, and protocols, ad hoc networks are now coming of age, and the time has come to bring together into one reference their principles, technologies, and techniques. The Handbook of Ad Hoc Wireless Networks does exactly that. Experts from around the world have joined forces to create the definitive reference for the field. From the basic concepts, techniques, systems, and protocols of wireless communication to the particulars of ad hoc network routing methods, power, connections, traffic management, and security, this handbook covers virtually every aspect of ad hoc wireless networking. It includes a section that explores several routing methods and protocols directly related to implementing ad hoc networks in a variety of applications. The benefits of ad hoc wireless networks are many, but several challenges remain. Organized for easy reference, The Handbook of Ad Hoc Wireless Networks is your opportunity to gain quick familiarity with the state of the art, have at your disposal the only complete reference on the subject available, and prepare to meet the technological and implementation challenges you'll encounter in practice.
Download or read book Spectrum Sharing in Wireless Networks written by John D. Matyjas and published by CRC Press. This book was released on 2016-11-17 with total page 697 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectrum Sharing in Wireless Networks: Fairness, Efficiency, and Security provides a broad overview of wireless network spectrum sharing in seven distinct sections: The first section examines the big picture and basic principles, explaining the concepts of spectrum sharing, hardware/software function requirements for efficient sharing, and future trends of sharing strategies. The second section contains more than 10 chapters that discuss differing approaches to efficient spectrum sharing. The authors introduce a new coexistence and sharing scheme for multi-hop networks, describe the space-time sharing concept, introduce LTE-U, and examine sharing in broadcast and unicast environments. They then talk about different cooperation strategies to achieve mutual benefits for primary users (PU) and secondary users (SU), discuss protocols in a spectrum sharing context, and provide different game theory models between PUs and SUs. The third section explains how to model the interactions of PUs and SUs, using an efficient calculation method to determine spectrum availability. Additionally, this section explains how to use scheduling models to achieve efficient SU traffic delivery. The subject of the fourth section is MIMO-oriented design. It focuses on how directional antennas and MIMO antennas greatly enhance wireless network performance. The authors include a few chapters on capacity/rate calculations as well as beamforming issues under MIMO antennas. Power control is covered in the fifth section which also describes the interference-aware power allocation schemes among cognitive radio users and the power control schemes in cognitive radios. The sixth section provides a comprehensive look at security issues, including different types of spectrum sharing attacks and threats as well as corresponding countermeasure schemes. The seventh and final section covers issues pertaining to military applications and examines how the military task protects its data flows when sharing the spectrum with civilian applications.
Download or read book Delay Analysis of IEEE 802 11 in Single Hop Networks written by and published by . This book was released on 2003 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents an analytical model to compute the average service time and jitter experienced by a packet when transmitted in a saturated IEEE 802.11 ad hoc network. In contrast to traditional work in the literature, in which a distribution is usually fitted or assumed, we use a bottom-up approach and build the first two moments of the service time based on the IEEE 802.11 binary exponential backoff algorithm and the events underneath its operation. Our model is general enough to be applied to any type of IEEE 802.11 wireless ad hoc network where the channel state probabilities driving a node's backoff operation are known. We apply our model to saturated single-hop ad hoc networks under ideal channel conditions. We validate our model through extensive simulations and conduct a performance evaluation of a node's average service time and jitter for both direct sequence and frequency-hopping spread spectrum physical layers.
Download or read book Grid and Distributed Computing written by Tai-hoon Kim and published by Springer Science & Business Media. This book was released on 2011-11-29 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the International Conference, GDC 2011, held as Part of the Future Generation Information Technology Conference, FGIT 2011, Jeju Island, Korea, in December 2011. The papers presented were carefully reviewed and selected from numerous submissions and focuse on the various aspects of grid and distributed computing.
Download or read book Applied System Simulation written by Mohammad S. Obaidat and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Simulation and molding are efficient techniques that can aid the city and regional planners and engineers in optimizing the operation of urban systems such as traffic light control, highway toll automation, consensus building, public safety, and environmental protection. When modeling transportation systems such as freeway systems, arterial or downtown grid systems, the city planner and engineer is concerned with capturing the varied interactions between drivers, automobiles, and the infrastructure. Modeling and simulation are used to effectively optimize the design and operation of all of these urban systems. It is possible that in an urban simulation community workshop, citizens can work interactively in front of computers and be able using the click of the mouse to walk up to their own front porch, looking at the proposed shopping mall alternatives across the street from virtually any angle and proposed bridge or tunnel and see how it can reduce traffic congestion. Buildings can be scaled down or taken out, their orientation can be changed in order to check the view and orientation in order to have better site with efficient energy-conservation. The stone or brick material on a building can be replaced by colored concrete, or more trees and lampposts can be placed on the site. Such flexibility in simulation and animation allows creative ideas in the design and orientation of urban sites to be demonstrated to citizens and decision makers before final realization.
Download or read book Performance Evaluation of Frequency Hopped Spread Spectrum Multi Hop Networks written by J. W. Gluck and published by . This book was released on 1988 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: Primary and secondary multiple-access interference processes are characterized for multi-hop packet radio networks, in which users are assumed to be Poisson-distributed in the plane and to use frequency hopped spread-spectrum signaling with a receiver-oriented assignment of frequency-hopping patterns. The throughput per node and the average forward progress are then evaluated for frequency-hopped multi-hop networks that employ (i) random forward routing with fixed transmission radius (RFR) and(ii) most forward progress routing with fixed transmission radius (MFR). The optimal average number of neighbors and transmission radius are derived for these cases when Reed-Solomon forward-error-control coding with minimum distance decoding or binary convolutional coding with Viterbi decoding is employed.
Download or read book Power and Spectrum Efficient Communications in Wireless Ad Hoc Networks written by Qi Qu and published by . This book was released on 2008 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt: In wireless ad-hoc networks, power and spectrum are two limited and precious system resources, and how to use them efficiently is the key to provide high performance communications. This dissertation presents a distributed system design framework and algorithms to achieve power-and-spectrum-efficient wireless communications in ad hoc networks. In the first part, we propose a cross-layer distributed power control and scheduling protocol for delay-constrained applications over mobile CDMA-based ad hoc wireless networks, where power control is employed to combat both the delay occurring on multi-hop wireless ad hoc networks and multiuser interference among mobile users. We also investigate the impact of Doppler spread upon the system performance, and provide a robust system which employs a combination of power control, and coding/interleaving to combat the effects of Doppler spread by exploiting the time diversity when the Doppler spread gets large. In the second part, a cognitive radio based multi-user resource allocation framework for mobile ad hoc networks is proposed. In particular, given pre-existing communications in the spectrum where the system is operating, a channel sensing and estimation mechanism is provided to obtain information such as subcarrier availability, noise power and channel gain. Given this information, both frequency spectrum and power are allocated to emerging new users (i.e., cognitive radio users), based on a distributed multi-user resource allocation framework, in order to achieve spectrum-efficient and power-efficient communications. In the third part, we investigate the issue of cooperative MIMO communications in ad hoc networks, and the issue of cooperative node selection is described, where a source node is surrounded by multiple neighbors and all of them are equipped with a single antenna. Given energy, delay and data rate constraints, a source node dynamically chooses its cooperating nodes from its neighbors to form a virtual MIMO system with the destination node (which is assumed to have multiple antennas), and adaptively allocates the power level and adjusts the constellation size for each of the selected cooperative nodes.
Download or read book Performance Study of Spread Spectrum Wireless Local Area Networks written by Sulaiman Mohd. Nor and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ad hoc Mobile and Wireless Networks written by Nicolas Montavont and published by Springer. This book was released on 2018-08-29 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 16th International Conference on Ad-hoc, Mobile, and Wireless Networks, ADHOC-NOW 2018, held in St. Malo, France, in September 2018. The 21 full and 6 short papers plus 2 invited talks presented in this volume were carefully reviewed and selected from 52 submissions. The contributions were organized in topical sections named: on ad-hoc, mobile and wireless sensor, networks and computing.
Download or read book Intrusion Detection in Wireless Ad Hoc Networks written by Nabendu Chaki and published by CRC Press. This book was released on 2014-02-06 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting cutting-edge research, Intrusion Detection in Wireless Ad-Hoc Networks explores the security aspects of the basic categories of wireless ad-hoc networks and related application areas. Focusing on intrusion detection systems (IDSs), it explains how to establish security solutions for the range of wireless networks, including mobile ad-hoc networks, hybrid wireless networks, and sensor networks. This edited volume reviews and analyzes state-of-the-art IDSs for various wireless ad-hoc networks. It includes case studies on honesty-based intrusion detection systems, cluster oriented-based intrusion detection systems, and trust-based intrusion detection systems. Addresses architecture and organization issues Examines the different types of routing attacks for WANs Explains how to ensure Quality of Service in secure routing Considers honesty and trust-based IDS solutions Explores emerging trends in WAN security Describes the blackhole attack detection technique Surveying existing trust-based solutions, the book explores the potential of the CORIDS algorithm to provide trust-based solutions for secure mobile applications. Touching on more advanced topics, including security for smart power grids, securing cloud services, and energy-efficient IDSs, this book provides you with the tools to design and build secure next-generation wireless networking environments.
Download or read book IETE Technical Review written by and published by . This book was released on 2005 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wireless Ad hoc and Sensor Networks written by Jagannathan Sarangapani and published by CRC Press. This book was released on 2017-12-19 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: With modern communication networks continuing to grow in traffic, size, complexity, and variety, control systems are critical to ensure quality and effectively manage network traffic. Providing a thorough and authoritative introduction, Wireless Ad hoc and Sensor Networks: Protocols, Performance, and Control examines the theory, architectures, and technologies needed to implement quality of service (QoS) in a wide variety of communication networks. Based on years of research and practical experience, this book examines the technical concepts underlying the design, implementation, research, and invention of both wired and wireless networks. The author builds a strong understanding of general concepts and common principles while also exploring issues that are specific to wired, cellular, wireless ad hoc, and sensor networks. Beginning with an overview of networks and QoS control, he systematically explores timely areas such as Lyapunov analysis, congestion control of high-speed networks, admission control based on hybrid system theory, distributed power control of various network types, link state routing using QoS parameters, and predictive congestion control. The book also provides a framework for implementing QoS control using mote hardware. Providing a deeply detailed yet conveniently practical guide to QoS implementation, Wireless Ad hoc and Sensor Networks: Protocols, Performance, and Control is the perfect introduction for anyone new to the field as well as an ideal reference guide for seasoned network practitioners.
