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Author: Arasch Honarbacht Publisher: ISBN: 9783832508425 Category : Languages : en Pages : 0
Book Description
Mobile ad hoc networks, also known as multihop or mesh networks, are gaining more and more attention these days. Originally designed for military applications, the idea of spontaneous communication using direct links to immediate neighbors has rapidly spread over to the civilian sector. This book focuses on the design of large-scale wireless multihop networks supporting quality-of-service. Based on an in-depth analysis of state-of-the-art architectures, the novel idea of cut-through/cell-switching is pointed out. Enhancements to the standard IEEE 802.11 DCF are presented as basic elements of diversified management protocols. An innovative approach to distributed dynamic channel assignment is introduced and benchmarked against one of the most powerful centralized algorithms known to date. Moreover, wireless sensor networks are identified as a new field of application for the classic Kalman filter.Finally, a new integrated R&D platform has been developed and is also part of the presentation. It consists of a simulation environment written in C++ and a software defined radio transceiver. The latter is based on an architecture employing the latest in digital signal processing: a general purpose DSP accompanied by FPGAs, dedicated digital up-/down converter ASICs, high-performance ADCs and DACs.
Author: Arasch Honarbacht Publisher: ISBN: 9783832508425 Category : Languages : en Pages : 0
Book Description
Mobile ad hoc networks, also known as multihop or mesh networks, are gaining more and more attention these days. Originally designed for military applications, the idea of spontaneous communication using direct links to immediate neighbors has rapidly spread over to the civilian sector. This book focuses on the design of large-scale wireless multihop networks supporting quality-of-service. Based on an in-depth analysis of state-of-the-art architectures, the novel idea of cut-through/cell-switching is pointed out. Enhancements to the standard IEEE 802.11 DCF are presented as basic elements of diversified management protocols. An innovative approach to distributed dynamic channel assignment is introduced and benchmarked against one of the most powerful centralized algorithms known to date. Moreover, wireless sensor networks are identified as a new field of application for the classic Kalman filter.Finally, a new integrated R&D platform has been developed and is also part of the presentation. It consists of a simulation environment written in C++ and a software defined radio transceiver. The latter is based on an architecture employing the latest in digital signal processing: a general purpose DSP accompanied by FPGAs, dedicated digital up-/down converter ASICs, high-performance ADCs and DACs.
Author: Adibi, Sasan Publisher: IGI Global ISBN: 1615206817 Category : Computers Languages : en Pages : 716
Book Description
"This book further explores various issues and proposed solutions for the provision of Quality of Service (QoS) on the wireless networks"--Provided by publisher.
Author: Houda Labiod Publisher: John Wiley & Sons ISBN: 0470393483 Category : Technology & Engineering Languages : en Pages : 331
Book Description
Two new fields have recently appeared: mobile ad hoc networks and sensor networks. The emergence of these very promising systems is mainly due to great technological progress in the field of wireless communication protocols; these will make it possible to offer a broad range of new applications in both civilian and militarian domains. The inherent characteristics of these systems imply new challenges. This book deals with several relevant fields related to the evolution of these spontaneous and self-organized networks. The authors tackle critical problems such as the design of unicast/multicast routing protocols, the support of the quality of service, the security mechanisms for routing and data transmission, the service discovery, the techniques of clustering/self-organization, the mobility of code and the fault-tolerance techniques. The discussion adopts an analysis-oriented approach which aims to cover the current cutting-edge aspects of these fields and to highlight some potential future development, making it essential reading for anyone wishing to gain a better understanding of these exciting new areas.
Author: Rashvand, Habib F. Publisher: IGI Global ISBN: 1466609613 Category : Computers Languages : en Pages : 656
Book Description
Although the existing layering infrastructure--used globally for designing computers, data networks, and intelligent distributed systems and which connects various local and global communication services--is conceptually correct and pedagogically elegant, it is now well over 30 years old has started create a serious bottleneck. Using Cross-Layer Techniques for Communication Systems: Techniques and Applications explores how cross-layer methods provide ways to escape from the current communications model and overcome the challenges imposed by restrictive boundaries between layers. Written exclusively by well-established researchers, experts, and professional engineers, the book will present basic concepts, address different approaches for solving the cross-layer problem, investigate recent developments in cross-layer problems and solutions, and present the latest applications of the cross-layer in a variety of systems and networks.
Author: Lagkas, Thomas D. Publisher: IGI Global ISBN: 1615207724 Category : Political Science Languages : en Pages : 572
Book Description
"This book offers cutting edge approaches for the provision of quality of service in wireless local area networks"--Provided by publisher.
Author: Maode Ma Publisher: CRC Press ISBN: 1420051318 Category : Computers Languages : en Pages : 372
Book Description
Focusing on an important and complicated topic in wireless network design, Wireless Quality of Service: Techniques, Standards, and Applications systematically addresses the quality-of-service (QoS) issues found in many types of popular wireless networks. In each chapter, the book presents numerous QoS challenges encountered in real-world
Author: Sudip Misra Publisher: Springer Science & Business Media ISBN: 1848822189 Category : Computers Languages : en Pages : 725
Book Description
Overview and Goals Wireless communication technologies are undergoing rapid advancements. The last few years have experienced a steep growth in research in the area of wireless sensor networks (WSNs). In WSNs, communication takes place with the help of spatially distributedautonomoussensornodesequippedtosensespeci?cinformation. WSNs, especially the ones that have gained much popularity in the recent years, are, ty- cally, ad hoc in nature and they inherit many characteristics/features of wireless ad hoc networks such as the ability for infrastructure-less setup, minimal or no reliance on network planning, and the ability of the nodes to self-organize and self-con?gure without the involvement of a centralized network manager, router, access point, or a switch. These features help to set up WSNs fast in situations where there is no existing network setup or in times when setting up a ?xed infrastructure network is considered infeasible, for example, in times of emergency or during relief - erations. WSNs ?nd a variety of applications in both the military and the civilian population worldwide such as in cases of enemy intrusion in the battle?eld, object tracking, habitat monitoring, patient monitoring, ?re detection, and so on. Even though sensor networks have emerged to be attractive and they hold great promises for our future, there are several challenges that need to be addressed. Some of the well-known challenges are attributed to issues relating to coverage and deployment, scalability, quality-of-service, size, computational power, energy ef?ciency, and security.
Author: Scott Rager Publisher: ISBN: Category : Languages : en Pages :
Book Description
This dissertation centers around two relatively new fields of study in communication networks. The first, Quality of Information, or QoI, refers to the inherent and contextual characteristics of data that define its utility to a particular application. The second, wireless ad hoc networks, are a field of network applications in which wireless devices, which are often mobile, must exchange information without the support of existing infrastructure, making them highly suitable for applications like emergency networks, military tactical networks, and sensor networks. Both QoI and wireless ad hoc networks bring a distinct set of design challenges to light because of their novelty and unique attributes. Both, however, also provide new opportunities for rethinking network research. Specifically, we expand our approach to designing network protocols to include algorithms that control a number of layers in the network stack jointly using current network conditions, such as backpressure routing. Within this approach to network control, we also seek to understand how the QoI metrics of accuracy, precision, and freshness of the network state information impact performance. Additionally, we consider the QoI of application layer data. We do so first by designing algorithms to select data in wireless sensor networks with the goal of maximizing the coverage of the selected data. We then model the scalability and limitations of networks when designing them to provide a minimum level of QoI instead of traditional approaches that simply offer asymptotic analysis.In each contribution of this dissertation, we aim to understand the impact of QoI on network control and analysis by building flexible models able to be applied to a variety of potential applications. In our analysis, we have strived to consider the practicality of applications in real-life scenarios. We achieve this practicality by considering overhead of protocols, developing and analyzing approximation algorithms to computationally complex algorithms, and providing realistic simulation results generated by the Qualnet and ns-3 network simulation software packages.We first study the framework of backpressure routing, providing analysis of its performance under delayed or inaccurate network state information as well as a close look at how overhead impacts performance in distributing this network state information. Next, we use Lyapunov optimization techniques from backpressure routing theory in a QoI-aware application to data selection for maximum information coverage with cost constraints in sensor networks. Finally, we use QoI to create a framework that outlines practical scalability and maximum achievable QoI limits. Overall, the goal of this document is to explore how Quality of Information impacts design and understanding of control algorithms and performance limits in ad hoc networks designed to support a variety of applications.
Author: Charles E. Perkins Publisher: Addison-Wesley Professional ISBN: Category : Computers Languages : en Pages : 392
Book Description
"Ad hoc networking" enables wireless devices to network with each other as needed, even when access to the Internet is unavailable. It enables a wide range of powerful applications, from instant conferencing between notebook PC users to emergency and military services that must perform in the harshest conditions. In this book, the field's leading researchers present today's newest, most sophisticated techniques for making network applications available anytime, anywhere. They present state-of-the-art design and implementation techniques designed to instantly network a wide variety of mobile, wireless devices without access to routers, base stations, or Internet Service Providers. Learn how ad hoc networks utilize existing IP addresses, but require new protocol engineering. Understand cluster-based networks, Dynamic Source Routing (DSR) protocols, Ad Hoc Routing Protocols, reconfigurable wireless and other approaches. Finally, review each leading application for ad hoc networking, including mobile conferencing, home networking, emergency/disaster services, Personal Area Networks (PANs), Bluetooth integration; and embedded, military, and automotive applications.
Author: Arasch Honarbacht
Author: Arasch Honarbacht
Author: Adibi, Sasan
Author: Tsu-Wei Chen
Author: Houda Labiod
Author: Rashvand, Habib F.
Author: Lagkas, Thomas D.
Author: Maode Ma
Author: Sudip Misra
Author: Scott Rager
Author: Charles E. Perkins