Download or read book Enhancing the Performance of Ad Hoc Wireless Networks with Smart Antennas written by Somprakash Bandyopadhyay and published by CRC Press. This book was released on 2016-04-19 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: A large portion of the network capacity of an ad hoc network can be wasted by the medium access mechanisms of omni-directional antennas. To overcome this problem, researchers propose the use of directional or adaptive antennas that largely reduce radio interference, improving the utilization of wireless medium and the resulting network throughput.

Download or read book Wireless Network Performance Enhancement via Directional Antennas Models Protocols and Systems written by John D. Matyjas and published by CRC Press. This book was released on 2015-11-18 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Directional antenna technologies have made significant advancements in the last decade. These advances have opened the door to many exciting new design opportunities for wireless networks to enhance quality of service (QoS), performance, and network capacity. In this book, experts from around the world present the latest research and development in

Download or read book Performance Enhancements in Wireless LANs and Ad Hoc Networks Withmultiple beam Smart Antennas written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless LANs are networks that are typically set up to provide data connectivity to an access point for a set of user nodes. In such localized networks, since all nodes have "equal" right to the bandwidth resources of the access point, the nodes compete for the common wireless medium in a distributed manner. Wireless ad hoc networks are extensions of wireless LANs such that nodes connect without the intervention of an access point. It is well known that such networks employ omnidirectional antennas at nodes and access points, adversely affecting throughput performance. In ad hoc networks, poor single hop performance results in poor multihop throughput, especially if some nodes are path "bottlenecks". In this work, we study and evaluate the performance improvement in wireless LANs and ad hoc networks with multiple-beam smart antennas. Our work examines a variety of issues that arise with the deployment of smart antennas at nodes, at different layers of the protocol stack, especially those related to medium access control, PHY-MAC interaction, scheduling, mulithop performance, and analytical bounds on achievable throughput. We propose schemes for medium access control with spatial multiplexing based on Carrier Sense Multiple Access (CSMA), to maximize one-hop throughput in wireless LANs and ad hoc networks. We develop an analytical model for the throughput in such networks for two different protocols, CSMA and Slotted Aloha, wherein nodes are equipped with smart antennas. Our model gives us insight into the choice of a medium access protocol based on the ambient traffic conditions, since we can predict the behavior of the protocol under different values of offered load. We also attempt to modify the basic protocols for improved performance with smart antennas. In addition, we examine the different types of smart antenna techniques that may be used at nodes of a mobile ad hoc network and study their relative merits and demerits. Further, we explore how efficient scheduling may be carried out in an ad hoc network where nodes are equipped with smart antennas, for which we study different heuristics. Finally, we perform multihop network simulation to evaluate the performance of multiple beam smart antennas at nodes in a distributed ad hoc network. Our analytical and simulation results are encouraging, and show that we can obtain drastic performance improvements in one-hop throughput with the use of smart antennas and suitably designed medium access protocols. Also, bottlenecks in congested areas (heavily loaded single hop) in multihop ad hoc networks may be cleared with such antennas. This provides tremendous improvement in the aggregate network throughput. In summary, our research on protocol design and throughput evaluation provides sufficient evidence for considering the deployment of smart antenna access points or nodes in wireless LANs and ad hoc networks.

Download or read book Handbook on Advancements in Smart Antenna Technologies for Wireless Networks written by Sun, Chen and published by IGI Global. This book was released on 2008-07-31 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides information on smart antenna technologies featuring contributions with in-depth descriptions of terminologies, concepts, methods, and applications related to smart antennas in various wireless systems.

Download or read book Network Protocols for Ad hoc Networks with Smart Antennas written by Karthikeyan Sundaresan and published by . This book was released on 2006 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: For heterogeneous smart antenna networks, we develop theoretical performance bounds by studying the impact of increasing degree of heterogeneity on network throughput performance. Given that the antenna technologies are already unified in the network, unified solutions are not required. However, we do develop efficient MAC and routing protocols to best leverage the available heterogeneous capabilities present in the network. We also design efficient cooperation strategies that will further help the communication protocols in exploiting the available heterogeneous capabilities in the network to the best possible extent.

Download or read book Advances in Nature Inspired Computing and Applications written by Shishir Kumar Shandilya and published by Springer. This book was released on 2018-08-29 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains research contributions from leading global scholars in nature-inspired computing. It includes comprehensive coverage of each respective topic, while also highlighting recent and future trends. The contributions provides readers with a snapshot of the state of the art in the field of nature-inspired computing and its application. This book has focus on the current researches while highlighting the empirical results along with theoretical concepts to provide a comprehensive reference for students, researchers, scholars, professionals and practitioners in the field of Advanced Artificial Intelligence, Nature-Inspired Algorithms and Soft Computing.

Download or read book Wireless Mesh Networks written by Ekram Hossain and published by Springer Science & Business Media. This book was released on 2007-11-20 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book collects articles featuring recent advances in the theory and applications of wireless mesh networking technology. The contributed articles, from the leading experts in the field, cover both theoretical concepts and system-level implementation issues. The book starts with the essential background on the basic concepts and architectures of wireless mesh networking and then presents advanced level materials in a step-by-step fashion.

Download or read book Smart and Sustainable Approaches for Optimizing Performance of Wireless Networks written by Sherin Zafar and published by John Wiley & Sons. This book was released on 2022-01-28 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: SMART AND SUSTAINABLE APPROACHES FOR OPTIMIZING PERFORMANCE OF WIRELESS NETWORK Explores the intersection of sustainable growth, green computing and automation, and performance optimization of 5G wireless networks Smart and Sustainable Approaches for Optimizing Performance of Wireless Networks explores how wireless sensing applications, green computing, and Big Data analytics can increase the energy efficiency and environmental sustainability of real-time applications across areas such as healthcare, agriculture, construction, and manufacturing. Bringing together an international team of expert contributors, this authoritative volume highlights the limitations of conventional technologies and provides methodologies and approaches for addressing Quality of Service (QOS) issues and optimizing network performance. In-depth chapters cover topics including blockchain-assisted secure data sharing, smart 5G Internet of Things (IoT) scenarios, intelligent management of ad hoc networks, and the use of Artificial Intelligence (AI), Machine Learning (ML) and Deep Learning (DL) techniques in smart healthcare, smart manufacturing, and smart agriculture. Covers design, implementation, optimization, and sustainability of wireless and sensor-based networks Discusses concepts of sustainability and green computing as well as their relevance to society and the environment Addresses green automation applications in various disciplines such as computer science, nanoscience, information technology (IT), and biochemistry Explores various smart and sustainable approaches for current wireless and sensor-based networks Includes detailed case studies of current methodologies, applications, and implementations Smart and Sustainable Approaches for Optimizing Performance of Wireless Networks: Real-time Applications is an essential resource for academic researchers and industry professionals working to integrate sustainable development and Information and Communications Technology (ICT).

Download or read book Emerging Location Aware Broadband Wireless Ad Hoc Networks written by Rajamani Ganesh and published by Springer Science & Business Media. This book was released on 2006-01-16 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emerging Location Aware Broadband Wireless Ad Hoc Networks is a compilation of new material on wireless networking and technology addressing several technical challenges in the field. The contributions are authored by distinguished experts who presented experimental results on their work at the recent International Symposium on Personal, Indoor, Mobile, Radio Communications (PIMRC) held in Barcelona, Spain, September 5-8, 2004. The authors present new results on issues involving wireless LANs and ad hoc networks; mobile wireless internet and satellite applications; encoding, algorithms and performance; and issues related to overlay networks, cross layer interactions and smart antennas. Whether you’re a telecommunications/networking specialist, systems engineer or a scientist, Emerging Location Aware Broadband Wireless Ad Hoc Networks provides valuable insight from experts in wireless networking for developing wireless systems and meeting future application requirements.

Download or read book NETWORKING 2008 Ad Hoc and Sensor Networks Wireless Networks Next Generation Internet written by Amitabha Das and published by Springer. This book was released on 2008-05-06 with total page 965 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 7th International IFIP-TC6 Networking Conference, NETWORKING 2008, held in Singapore, in May 2008. The 82 revised full papers were carefully reviewed and selected from numerous submissions for inclusion in the book. The papers are organized in topical sections on ad hoc and sensor networks: design and optimization, MAC protocol, overlay networking, and routing; next generation internet: authentication, modeling and performance evaluation, multicast, network measurement and testbed, optical networks, peer-to-peer and overlay networking, peer-to-peer services, QoS, routing, security, traffic engineering, and transport protocols; wireless networks: MAC performance, mesh networks, and mixed networks.

Download or read book Interference and Capacity Analysis of CMDA Ad Hoc Network Using Multibeam Smart Antennas written by Antonio Ramos García and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Mobile hosts such as a mobile computers, featuring powerful CPUs, large main memories, hundreds of megabytes of disk space, multimedia sound capabilities, and color displays, are now easily affordable and becoming quite common in every day business and personal life. At the same time, network connectivity options for use with mobile hosts have increased dramatically, including support for a growing number of wireless networking producís based on radio and infrared. The ad-hoc networks are being developed to satisfy this demand of mobile and faster services. Smart antennas offer a broad range of ways to improve wireless system performance. In general, smart antennas have the potential to provide enhanced range and reduce infrastructure costs in early deployments, enhanced link performance as the system is built-out, and increased long-term system capacity. Code División Múltiple Access (CDMA) seems to be the future wireless interface and, because of its characteristics, it could play an important role in future Communications systems. Both smart antenna technology and CDMA promise to revolutionize the field of wireless Communications. This work will focus on CDMA as the access method, and due that this access technique is just interference limited, we will determine the interference levéis caused in the network that can support a great number of users (network capacity) within a faster service, always taking care to guarantee the QoS necessarily to be commercially competitive in the market.

Download or read book AD HOC NETWORKS written by Prasant Mohapatra and published by Springer Science & Business Media. This book was released on 2006-01-16 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: AD HOC NETWORKS: Technologies and Protocols is a concise in-depth treatment of various constituent components of ad hoc network protocols. It reviews issues related to medium access control, scalable routing, group communications, use of directional/smart antennas, network security, and power management among other topics. The authors examine various technologies that may aid ad hoc networking including the presence of an ability to tune transmission power levels or the deployment of sophisticated smart antennae. Contributors to this volume include experts that have been active in ad hoc network research and have published in the premier conferences and journals in this subject area. AD HOC NETWORKS: Protocols and Technologies will be immensely useful as a reference work to engineers and researchers as well as to advanced level students in the areas of wireless networks, and computer networks.

Download or read book Advances in Information and Communication written by Kohei Arai and published by Springer. This book was released on 2019-02-01 with total page 1061 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a remarkable collection of chapters that cover a wide range of topics in the areas of information and communication technologies and their real-world applications. It gathers the Proceedings of the Future of Information and Communication Conference 2019 (FICC 2019), held in San Francisco, USA from March 14 to 15, 2019. The conference attracted a total of 462 submissions from pioneering researchers, scientists, industrial engineers, and students from all around the world. Following a double-blind peer review process, 160 submissions (including 15 poster papers) were ultimately selected for inclusion in these proceedings. The papers highlight relevant trends in, and the latest research on: Communication, Data Science, Ambient Intelligence, Networking, Computing, Security, and the Internet of Things. Further, they address all aspects of Information Science and communication technologies, from classical to intelligent, and both the theory and applications of the latest technologies and methodologies. Gathering chapters that discuss state-of-the-art intelligent methods and techniques for solving real-world problems, along with future research directions, the book represents both an interesting read and a valuable asset.

Download or read book Introduction to Smart Antennas written by Constantine A. Balanis and published by Springer Nature. This book was released on 2022-06-01 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the growing demand for mobile communications is constantly increasing, the need for better coverage, improved capacity, and higher transmission quality rises. Thus, a more efficient use of the radio spectrum is required. Smart antenna systems are capable of efficiently utilizing the radio spectrum and is a promise for an effective solution to the present wireless systems’ problems while achieving reliable and robust high-speed high-data-rate transmission. The purpose of this book is to provide the reader a broad view of the system aspects of smart antennas. In fact, smart antenna systems comprise several critical areas such as individual antenna array design, signal processing algorithms, space-time processing, wireless channel modeling and coding, and network performance. In this book we include an overview of smart antenna concepts, introduce some of the areas that impact smart antennas, and examine the influence of interaction and integration of these areas to Mobile Ad-Hoc Networks. In addition, the general principles and major benefits of using space-time processing are introduced, especially employing multiple-input multiple-output (MIMO) techniques.

Download or read book Medium Access Control in Wireless Networks written by Hongyi Wu and published by Nova Publishers. This book was released on 2008 with total page 662 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless technologies and applications are becoming one of the fastest growing and most promising areas in recent years. To accommodate data transmission by multiple stations sharing the scarce wireless bandwidth, a medium access control (MAC) protocol plays a crucial role in scheduling packet transmission fairly and efficiently. The emerging wireless networks, such as ad-hoc networks, sensor networks or mesh networks, are mostly multi-hop based and in distributed manner, which brings a lot of problems and challenges in designing fine-tuned MAC protocols tailored for modern wireless network. In this book, the authors give complete and in-depth overviews to the classic medium access control algorithms and the related protocols, as well as their applications in various wireless data networks especially the most successful Wireless Local Area Networks (WLAN). The book consists of three major parts. Part I of this book, including Chapters 1-7, is emphasising on the fundamentals of medium access control algorithms and protocols. Chapter 1 provides an introduction to the wireless networks, such as overview of wireless networks, problems and challenges of the wireless networks, and the classifications of MAC protocols as well as the performance metrics. Chapter 2 introduces important collision resolution algorithms applied in medium access controls, for example, the splitting algorithm and the backoff algorithm. Chapter 3 reviews the hybrid access control algorithms that combine both contention and allocation schemes. A series of important collision avoidance schemes are introduced in Chapters 4-7 respectively, with a specific design goal covered in each chapter. Chapter 4 focuses on the multi-channel MAC protocols for collision avoidance; Chapter 5 introduces the concepts of power control and power management in medium access control and how they can be applied in MAC protocol design; Chapter 6 presents how to provide Quality-of- Service (QoS) to multimedia wireless networks, in either centralised or distributed manner; and Chapter 7 explains how the smart antennas can be applied in the medium access control to provide high channel throughput and low packet collision.

Download or read book New Horizons in Mobile and Wireless Communications Volume 4 written by Ramjee Prasad and published by Artech House. This book was released on 2009 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on cutting-edge research projects in the field, this book (part of a comprehensive 4-volume series) provides the latest details and covers the most impactful aspects of mobile, wireless, and broadband communications development. These books present key systems and enabling technologies in a clear and accessible manner, offering you a detailed roadmap the future evolution of next generation communications. Other volumes cover Networks, Services and Applications; Reconfigurability; and Ad Hoc Networks.

Download or read book Quality of Service Aware Topology Control for Wireless Ad Hoc Networks Using Smart Antennas written by Sk. Mohammad Rokonuzzaman and published by . This book was released on 2010 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless ad hoc networks can suffer from capacity and scalability problems, especially when omni-directional antennas are used. Meeting the required Quality of Service (QoS) of the communications becomes a difficult task in such networks. To help alleviate these traditional problems of wireless ad hoc networks, this thesis presents the design and analysis of low level protocols and algorithms that intelligently use adaptive beamforming smart antennas to facilitate the provision of communications meeting QoS constraints of applications. The network model for which the protocols and algorithms in this thesis are designed is a cooperative, community wireless ad hoc network where nodes are in general fixed and there is no centrally owned infrastructure. This is an extension to the Suburban Ad-Hoc Network (SAHN). Though SAHN is a quasi-static network, much of the work of this thesis can be extended to include mobility. In this thesis medium access control, routing and topology control protocols and algorithms that are aware of QoS requirements of communications have been developed, simulated and evaluated. These protocols and algorithms take advantage of special characteristics of smart antennas. As a complete system, the new algorithms and protocols within a smart antenna equipped wireless ad hoc network, offers significant performance gains over traditional wireless networks.