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Author : Januar Janapsatya
Publisher :
ISBN 13 :
Total Pages : 151 pages
Book Rating : 4.:/5 (625 download)
Download or read book Switched-beam Smart Antenna System for Indoor Wireless LAN written by Januar Janapsatya and published by . This book was released on 2004 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Garret Okamoto
Publisher : Springer Science & Business Media
ISBN 13 : 0306473232
Total Pages : 217 pages
Book Rating : 4.3/5 (64 download)
Download or read book Smart Antenna Systems and Wireless LANs written by Garret Okamoto and published by Springer Science & Business Media. This book was released on 2005-12-21 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book concerns two major topics, smart antenna systems and wireless local-area-networks (LANs). For smart antenna systems, it d- cusses the mechanics behind a smart antenna system, the setup of a smart antenna experimental testbed, and experimental and computer simulation results of various issues relating to smart antenna systems. For wireless LAN systems, it discusses the IEEE 802.11 worldwide wi- less LAN standard, the operation of a wireless LAN system, and some of the technical considerations that must be overcome by a wireless LAN system designer. These two topics are combined in the discussion of the Smart Wireless LAN (SWL) system, which was designed to achieve the benefits which smart antenna systems can provide for wireless LAN systems while still remaining compatible with the 802.11 wireless LAN standard. The design of SWL calls for the replacement of the conv- tional wireless LAN base station (which are called access points in the 802.11 documentation) with an SWL base station, while leaving the - dividual terminal operation as unchanged as possible.
Author : Constantine A. Balanis
Publisher : Morgan & Claypool Publishers
ISBN 13 : 1598291769
Total Pages : 185 pages
Book Rating : 4.5/5 (982 download)
Download or read book Introduction to Smart Antennas written by Constantine A. Balanis and published by Morgan & Claypool Publishers. This book was released on 2007 with total page 185 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.
Author : Karman Perdana Sunidja
Publisher :
ISBN 13 :
Total Pages : 150 pages
Book Rating : 4.E/5 ( download)
Download or read book Directional Switched Beam Antenna Array for Indoor Wireless Applications written by Karman Perdana Sunidja and published by . This book was released on 1996 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Qi Luo
Publisher : John Wiley & Sons
ISBN 13 : 1119422795
Total Pages : 288 pages
Book Rating : 4.1/5 (194 download)
Download or read book Low-cost Smart Antennas written by Qi Luo and published by John Wiley & Sons. This book was released on 2019-01-18 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: An authoritative guide to the latest developments for the design of low-cost smart antennas Traditional smart antenna systems are costly, consume great amounts of power and are bulky size. Low-cost Smart Antennas offers a guide to designing smart antenna systems that are low cost, low power, and compact in size and can be applied to satellite communications, radar and mobile communications. The authors — noted experts on the topic — provide introductions to the fundamental concepts of antennas, array antennas and smart antennas. The book fills a gap in the literature by presenting the design techniques of low-cost radio frequency (RF) smart antennas as well as approaches for implementing the hardware of the antenna and the beamforming network (BFN). A comprehensive and accessible book, Low-cost Smart Antennas not only presents an up-to-date review of the topic but includes illustrative case studies that contain in-depth explorations of the theory and technology of smart antennas. While other resources highlight the software (signal processing algorithms), this book is unique by focusing on the antenna hardware. This important book: Offers an introduction to the most recent developments of the design of low-cost smart antennas and their applications Presents a unique book that puts the focus on antenna hardware Includes a variety of case studies that clearly demonstrate the implementation of current design techniques Introduces both fundamental theories as well as more advanced topics Written for students and researchers and antenna engineers, Low-cost Smart Antennas explores the most recent advances in the field with an emphasis on antenna hardware.
Author : Sun, Chen
Publisher : IGI Global
ISBN 13 : 1599049899
Total Pages : 584 pages
Book Rating : 4.5/5 (99 download)
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.
Author : Ahmed El Zooghby
Publisher : Artech House Publishers
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.3/5 (91 download)
Download or read book Smart Antenna Engineering written by Ahmed El Zooghby and published by Artech House Publishers. This book was released on 2005 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Whether you are designing for systems based on 2G, 3G, or advanced MIMO technology, you can find the solution you need with this comprehensive reference on applying smart antennas in wireless and mobile communications. The book provides you with a simple yet powerful design methodology that enables you to select the smart antenna approach most suitable for a particular application. Moreover, it offers guidance in designing the appropriate uplink and downlink beamforming algorithms.
Author : Ajay Yadav
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659313769
Total Pages : 68 pages
Book Rating : 4.3/5 (137 download)
Download or read book Beam Forming Network For WLAN written by Ajay Yadav and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, high-speed wireless communication is in vogue. In wireless communication systems, multipath fading, delay and interference occurred by reflection or diffraction. In a high-speed wireless communication, it becomes a necessity to separate desired signal from delay or interference signal. Thus to overcome these problems Smart antenna systems have been developed. Smart antennas employ a set of the radiating elements that are combined to form a movable or switchable beam pattern that follows the desired user. The arrays by themselves are not smart, it is the digital signal processing that makes them smart. The process of combining the signals and then focusing the radiation in a particular direction is often referred to as digital beam forming. Smart antennas are most often realized with either switched-beam or fully adaptive array antennas. A smart antenna system consists of an antenna array, associated RF hardware, and a computer controller that changes the array pattern in response to the radio frequency environment, in order to improve the performance of a communication or radar system. In the switched beam system there is the beam forming network which w
Author : Mohd. Nazif Mat Salleh
Publisher :
ISBN 13 :
Total Pages : 67 pages
Book Rating : 4.:/5 (96 download)
Download or read book The Switched Beam Smart Antenna System Design written by Mohd. Nazif Mat Salleh and published by . This book was released on 2008 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. S. Blogh
Publisher : John Wiley & Sons
ISBN 13 : 9780470845196
Total Pages : 446 pages
Book Rating : 4.8/5 (451 download)
Download or read book Third-Generation Systems and Intelligent Wireless Networking written by J. S. Blogh and published by John Wiley & Sons. This book was released on 2002-04-29 with total page 446 pages. Available in PDF, EPUB and Kindle. Book excerpt: Of Non-Wraparound Network Performance -- Wrap-around Network Performance Results -- Performance Results over a LOS Channel -- Performance Results over a Multipath Channel -- Performance over a Multipath Channel using Power Control -- Performance of an AQAM based Network using Power Control -- UTRA, Adaptive Arrays and Adaptive Modulation -- Direct Sequence Code Division Multiple Access -- UMTS Terrestrial Radio Access -- Spreading and Modulation -- Common Pilot Channel -- Power Control -- Uplink Power Control -- Downlink Power Control -- Soft Handover -- Signal-to-Interference plus Noise Ratio Calculations -- Downlink -- Uplink -- Multi-User Detection -- Simulation Results -- Simulation Parameters -- The Effect of Pilot Power on Soft Handover Results -- Fixed Received Pilot Power Thresholds without Shadowing -- Fixed Received Pilot Power Thresholds with 0.5 Hz Shadowing -- Fixed Received Pilot Power Thresholds with 1.0 Hz Shadowing -- Relative Received Pilot Power Thresholds without Shadowing -- Relative Received Pilot Power Thresholds with 0.5 Hz Shadowing -- Relative Received Pilot Power Thresholds with 1.0 Hz Shadowing -- E[subscript c]/I[subscript o] Power Based Soft Handover Results -- Fixed E[subscript c]/I[subscript o] Thresholds without Shadowing -- Fixed E[subscript c]/I[subscript o] Thresholds with 0.5 Hz Shadowing -- Fixed E[subscript c]/I[subscript o] Thresholds with 1.0 Hz Shadowing -- Relative E[subscript c]/I[subscript o] Thresholds without Shadowing.
Author : Paul R.P. Hoole
Publisher : CRC Press
ISBN 13 : 100079377X
Total Pages : 450 pages
Book Rating : 4.0/5 (7 download)
Download or read book Smart Antennas and Electromagnetic Signal Processing in Advanced Wireless Technology written by Paul R.P. Hoole and published by CRC Press. This book was released on 2022-09-01 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book addresses the current demand for a scientific approach to advanced wireless technology and its future developments. It gives a clear presentation of both antennas and adaptive signal processing which is what makes antennas powerful, maneuverable and necessary for advanced wireless technology. The book presents electromagnetic signal processing techniques that both control the antenna beam and track the moving station, which is required for effective, fast, dynamic beamforming. The first part of the book presents a comprehensive description and analysis of basic antenna theory, starting from short dipole antennas to array antennas. This section also includes important concepts related to antenna parameters, electromagnetic wave propagation, the Friis equation, the radar equation and wave reflection and transmission through media. The second part of the book focuses on smart antennas, commencing from a look at the traditional approach to beamforming before getting into the details of smart antennas. Complete derivation and description of the techniques for electromagnetic field signal processing techniques for adaptive beamforming are also presented. Artificial Intelligence (AI) driven beamforming is presented using computationally fast and low-memory demanding technique for AI beamforming is presented with the different excitation functions available. A novel method for fast, low memory and accurate, maneuverable single beam generation is presented, as well as other methods for beamforming with fewer elements along with a simple method for tracking the mobile antenna and station. In this section, for completeness, the use of antenna signal processing for synthetic aperture techniques for imaging is also presented, specifically the Inverse Synthetic Aperture Imaging technique. The third part of the book presents technological aspects of advanced wireless technology, including the 5G wireless system and the various devices needed to construct it. While the books’ main emphasis is theoretical understanding and design, it includes applications, and legal matters are also presented.
Author : Thomas Kaiser
Publisher : Hindawi Publishing Corporation
ISBN 13 : 9775945097
Total Pages : 891 pages
Book Rating : 4.7/5 (759 download)
Download or read book Smart Antennas written by Thomas Kaiser and published by Hindawi Publishing Corporation. This book was released on 2005 with total page 891 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart Antennas—State of the Art brings together the broad expertise of 41 European experts in smart antennas. They provide a comprehensive review and an extensive analysis of the recent progress and new results generated during the last years in almost all fields of smart antennas and MIMO (multiple-input multiple-output) transmission. The following represents a summarized table of content.Receiver: space-time processing, antenna combining, reduced rank processing, robust beamforming, subspace methods, synchronization, equalization, multiuser detection, iterative methods Channel: propagation, measurements and sounding, modelling, channel estimation, direction-of-arrival estimation, subscriber location estimation Transmitter: space-time block coding, channel side information, unified design of linear transceivers, ill-conditioned channels, MIMO-MAC strategies Network Theory: channel capacity, network capacity, multihop networks Technology: antenna design, transceivers, demonstrators and testbeds, future air interfaces Applications and Systems: 3G system and link level aspects, MIMO HSDPA, MIMO-WLAN/UMTS implementation issues This book serves as a reference for scientists and engineers who need to be aware of the leading edge research in multiple-antenna communications, an essential technology for emerging broadband wireless systems.
Author : Theodore S. Rappaport
Publisher : Institute of Electrical & Electronics Engineers(IEEE)
ISBN 13 :
Total Pages : 568 pages
Book Rating : 4.3/5 (91 download)
Download or read book Smart Antennas written by Theodore S. Rappaport and published by Institute of Electrical & Electronics Engineers(IEEE). This book was released on 1998 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this compendium, you will find some of the classical publications and most promising research papers which have and will continue to impact the emerging field of wireless adaptive arrays. The papers have been compiled based on graduate student research at the Mobile and Portable Radio Research Group (MPRG) at Virginia Tech. This book is a handy, single-source reference to assist graduate students, researchers, and practitioners involved with the design, development, and deployment of smart antenna technology.
Author : Praveen Kumar Malik
Publisher : Springer Nature
ISBN 13 : 3030766365
Total Pages : 421 pages
Book Rating : 4.0/5 (37 download)
Download or read book Smart Antennas written by Praveen Kumar Malik and published by Springer Nature. This book was released on 2022-02-03 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest techniques for the design of antenna, focusing specifically on the microstrip antenna. The authors discuss antenna structure, defected ground, MIMO, and fractal design. The book provides the design of microstrip antenna in terms of latest applications and uses in areas like IoT and device-to-device communication. The book also provides the current methods and techniques used for the enhancement of the performance parameters of the microstrip antenna. Chapters enhance the knowledge and skills of students and researchers in the latest in the communications world like IoT, D2D, satellite, wearable devices etc. The authors discuss applications such as microwave imaging, medical implants, hyperthermia treatments, and wireless wellness monitoring and how a decrease in size of antenna help facilitate application potential. Provides the latest techniques used for the design of antenna in terms of its structure, defected ground, MIMO and fractal design; Outlines steps to resolve issues with designing antenna, including the latest design and design parameters for microstrip antenna; Presents the design of conformal and miniaturized antenna structures for various applications.
Author : Imad Shehab
Publisher :
ISBN 13 :
Total Pages : 156 pages
Book Rating : 4.:/5 (478 download)
Download or read book Optimal Beamwidth of Switched Beam Antenna System for Wireless Network Optimization written by Imad Shehab and published by . This book was released on 2000 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Heinz Novak
Publisher :
ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.:/5 (638 download)
Download or read book Switched-beam Adaptive Antenna System written by Heinz Novak and published by . This book was released on 1999 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
