Download or read book Random Access Over Multi packet Reception Channels written by Seyed Shwan Ashrafi and published by . This book was released on 2016 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis addresses the problem of Multi-Packet Reception (MPR) for random access scenarios in Wireless LAN type infrastructure network. Our results builds on a recently proposed physical-layer network coding mechanism – Compute-and-Forward (C&F); we embed this within slotted ALOHA and Carrier Sense Multiple Access (CSMA) protocols for operational scenarios where multiple simultaneous transmissions are likely to occur. A mean-field approach is used to understand the impact of multi-packet reception in random access networks. By focusing on a special family of MPR channels – the all-or-nothing model, stability conditions are derived for slotted ALOHA and CSMA systems under the above assumption. Interestingly, a number of physical-layer network coding schemes such as compute-and-forward, successive compute-and-forward (SCF) and successive interference cancellation can be viewed as special cases of all-or-nothing symmetric MPR model. In addition, the problem is analyzed under the general symmetric MPR channels which turns out not to be fundamentally different from the all-or-nothing MPR. The primary outcome is a deeper understanding of the behavior of random access schemes over general symmetric MPR channels. Due to the interaction among users and the challenges emanating from such interactions, random access can be more readily analyzed if the state of users are assumed decoupled and an approximate stability region obtained for the system. Nonetheless, the approximate stability region computation based on the decoupling assumption is still complicated for even small (few clients) networks. By a mean-field approach, the random access problem is studied in the large number of clients regime. As a result, the evolution of the system state in the limit can be well approximated by a deterministic dynamical system. The stability conditions for the limiting system then paves the way for a better understanding of a known/observed phenomenon called meta-stability whereby (finite) random-access networks undergo a phase transition: from stability to meta-stability. In the thesis, we first present results for slotted ALOHA with all-or-nothing MPR model. An approximate stability region is characterized which is then used for system performance evaluation in terms of throughput and delay. These results are then extended to the case of general symmetric MPR channels. Next, the stability of persistent CSMA systems is analyzed similar to slotted ALOHA analysis and throughput and delay results are obtained. Meta-stability is discussed for CSMA systems and system design guidelines are outlined to guarantee certain quality-of-service requirements, i.e., avoidance of meta-stable behavior. By adding a back-off mechanism, the stationary behavior of a saturated system is studied, again through mean-field analysis. Finally, we propose a novel extension to the cooperating multiple AP scenario for dense networks, where we present new algorithms for MPR-capable systems and present some initial analysis.
Download or read book Random Multiple Access Communications on Multipacket Reception Channels written by Douglas Shing Tak Chan and published by . This book was released on 2006 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiple Access Communications written by Claudio Sacchi and published by Springer Science & Business Media. This book was released on 2011-09 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 4th International Workshop on Multiple Access Communications, MACOM 2011, held in Trento, Italy, in September 2011. The 21 full papers papers presented were carefully reviewed and selected from more than 40 submissions. They are divided in topical sections on cognitive radio; MAC protocols; communications theory; special session on MAC protocols for WSNs; system analysis and scheduling; and queuing systems.
Download or read book Tag Counting and Monitoring in Large Scale RFID Systems written by Jihong Yu and published by Springer. This book was released on 2018-06-06 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive treatment of the theoretical foundation and algorithmic tools necessary in the design of efficient tag counting and monitoring algorithms in emerging RFID systems. The book delivers an in-depth analysis on the following problems ranging from theoretical modeling and analysis, to practical algorithm design and optimization: Stability analysis of the frame slotted Aloha protocol, the de facto standard in RFID tag counting and identification; Tag population estimation in dynamic RFID systems; Missing tag event detection in the presence of unexpected tags; Missing tag event detection in multi-group multi-region RFID systems. The target readers are researchers and advanced-level engineering students interested in acquiring in-depth knowledge on the topic and on RFID systems and their applications.
Download or read book Integrated Random Access Reservation Schemes for Multi Access Communication Channels written by Izhak Rubin and published by . This book was released on 1977 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under Integrated Random-Access Reservation (IRAR) access-control schemes, newly arrived packets can be designated for reserved or random-access transmissions. In the latter case, if a collision occurs, each colliding packet is assigned for transmission by reservation, rather than attempt another random-access transmission. Performance of the IRAR schemes expressed in terms of the associated channel delay-throughput curves. Single packet messages are assumed. Analytical expressions are derived for the limiting average packet delay for a broadcast multi-access channel, under various IRAR schemes. The performance curves under IRAR access-control schemes are compared with those resulting when pure reservation and pure random-access procedures are used. It is shown that for channels with low propagation delays (such as terrestrial radio or line channels), an IRAR scheme yields an excellent performance curve over the whole throughput range. For channels with high propagation delays (such as a satellite communication channel), an IRAR scheme is shown to yield delay-throughput performance characteristics superior to those obtained under pure reservation and random-access schemes, for medium and low network throughput values. At higher throughput values, an efficiently designed integrated access control scheme will be appropriately switched from an IRAR mode into a reservation procedure.
Download or read book Multiple Access Channels written by Ezio Biglieri and published by IOS Press. This book was released on 2007 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surveys general results on multiple-access channels, and gives an overview of the problems of CDMA solutions. This work includes chapters devoted to the information-theoretical aspects of multiple-access communication. It discusses multiple-access techniques and covers coding techniques.
Download or read book Game Theory for Networks written by RAHUL JAIN and published by Springer. This book was released on 2012-05-31 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the thoroughly refereed post-conference proceedings of the Second International Conference on Game Theory for Networks (GameNets 2011) held in Shanghai, China, April 16-18, 2011. The 45 revised full papers presented were carefully selected from numerous submissions and focus topics such as mechanism design, physical layer games, network mechanisms, stochastic and dynamic games, game-theoretic network models, cooperative games in networks, security games, spectrum sharing games, P2P and social networks and economics of network QoS.
Download or read book Proceedings written by and published by . This book was released on 2006 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiple Access Communications written by Alexey Vinel and published by Springer. This book was released on 2010-09-08 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is our great pleasure to present the proceedings of the Third International Workshop on Multiple Access Communications (MACOM) that was held in Barcelona during September 13–14, 2010. In 1961, Claude Shannon established the foundation for the discipline now known as “multi-user information theory” in his pioneering paper “Two-way Communication Channels,” and later Norman Abramson published his paper “The Aloha System—Another Alternative for Computer Communications” in 1970 which introduced the concept of multiple access using a shared common channel. Thereafter, for more than 40 years of study, numerous elegant theories and algorithms have been developed for multiple-access communications. During the 1980s and 1990s the evolution of multiple-access techniques p- ceeded in conjunction with the evolution of wireless networks. Novel multiple access techniques like code division multiple access (CDMA) and orthogonal frequency division multiple access (OFDMA) provided increased spectral - ?ciency, dynamicity and ?exibility in radio resource allocation with intrinsic anti-multipath and anti-interference features. In this ?rst decade of the 21st century,multiple-accesstechniques,derivedfromadvancedwirelesstransmission methodologiesbasedonthediversityconcept(e. g. ,MC-CDMA,MIMO-OFDMA and SC-FDMA), opened the road to a renewed idea of multiple access. Today multiple-access communications involve many challenging aspects not only l- ited (like in the past) to physical layer design. Medium access control (MAC) techniques play a crucial role in managing the radio resources that users will exploit to transmit their data streams. Recent developments in software radios and cognitive radios have led to a signi?cant impact also on spectrum m- agement and access paradigms.
Download or read book Multipacket Reception in Wireless Communication Networks written by Qing Zhao and published by . This book was released on 2001 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multiaccess Mobility and Teletraffic written by David Everitt and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Designers of wireless networks face a problem which is multidimensional in nature, where issues of multiaccess, radio propagation, antennas, mobility and teletraffic all need to be understood and simultaneously addressed in order to create a properly functioning system. This book does not merely concentrate on one of these issues but takes a broader view, and presents a mix of papers addressing systems and networking issues. Multiaccess, Mobility and Teletraffic: Advances in Wireless Networks addresses fundamental theoretical issues about future wireless networks, such as capacity improvements theoretically attainable from spread spectrum systems, and practical concerns associated with current networks such as signalling, implementation of GSM and CDMA networks, and implementation of packet data services over wireless networks. As well as the papers looking at specific technologies, this book contains a number of papers discussing more generic problems in mobile networks, such as issues associated with handoff, resource management, frequency reuse, mobility, signalling and wireless packet networks. Multiaccess, Mobility and Teletraffic: Advances in Wireless Networks covers a broad range of issues associated with wireless networks and provides a very interesting snapshot of the current state-of-the-art. It will be of interest to all researchers and practitioners working in the field of wireless communications and networks.
Download or read book Network Control and Optimization written by Rudesindo Núñez-Queija and published by Springer. This book was released on 2009-11-05 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: We are proud to present the proceedings of NET-COOP 2009, the inter- tionalconferenceonnetworkcontrolandoptimization,co-organizedbyEURAN- DOM/Eindhoven University of Technology and CWI. This year’s conference at EURANDOM, held November 23–25, was the third in line after previous e- tions in Avignon (2007) and Paris (2008). NET-COOP 2009 was organized in conjunction with the Euro-NF workshop on “New Trends in Modeling, Quan- tative Methods, and Measurements. ” While organized within the framework of Euro-NF, NET-COOP enjoys great interest beyond Euro-NF, as is attested by the geographic origins of the papers in these proceedings. TheNET-COOPconferencefocusesonperformanceanalysis,controland- timization of communication networks, including wired networks, wireless n- works, peer to peer networks and delay tolerant networks. In each of these domains network operators and service providers face the challenging task to e?ciently provide service at their customer’s standards in a highly dynamic - vironment. Internet tra?c continues to grow tremendously in terms of volume as well as diversity. This development is fueled by the increasing availability of high-bandwidth access (both wired and wireless) to end users, opening new ground for evolving and newly emerging wide-band applications. The increase in network complexity, as well as the plurality of parties involved in network operation, calls for e?cient distributed control. New models and techniques for the control and optimization of networks are needed to address the challenge of allocating communication resources e?ciently and fairly, while accounting for non-cooperative behavior.
Download or read book Energy and Spectrum Efficient Wireless Network Design written by Guowang Miao and published by Cambridge University Press. This book was released on 2015 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the fundamental principles and practical tools needed to design next-generation wireless networks that are both energy- and spectrum-efficient.
Download or read book Telemedicine and E Health Services Policies and Applications Advancements and Developments written by Rodrigues, Joel J. P. C. and published by IGI Global. This book was released on 2012-04-30 with total page 573 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book offers a comprehensive and integrated approach to telemedicine by collecting E-health experiences and applications from around the world and by exploring new developments and trends in medical informatics"--
Download or read book Satellite Communications Systems written by Gerard Maral and published by John Wiley & Sons. This book was released on 2020-01-15 with total page 792 pages. Available in PDF, EPUB and Kindle. Book excerpt: The revised and updated sixth edition of em style="mso-bidi-font-style: normal;"Satellite Communications Systems contains information on the most recent advances related to satellite communications systems, technologies, network architectures and new requirements of services and applications. The authors – noted experts on the topic – cover the state-of-the-art satellite communication systems and technologies and examine the relevant topics concerning communication and network technologies, concepts, techniques and algorithms. New to this edition is information on internetworking with the broadband satellite systems, more intensive coverage of Ka band technologies, GEO high throughput satellite (HTS), LEO constellations and the potential to support the current new broadband Internet services as well as future developments for global information infrastructure. The authors offer details on digital communication systems and broadband networks in order to provide high-level researchers and professional engineers an authoritative reference. The companion website provides slides for instructors to teach and for students to learn. In addition, the book is designed in a user-friendly format.
Download or read book Network Traffic Engineering written by Andrea Baiocchi and published by John Wiley & Sons. This book was released on 2020-07-24 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive guide to the concepts and applications of queuing theory and traffic theory Network Traffic Engineering: Models and Applications provides an advanced level queuing theory guide for students with a strong mathematical background who are interested in analytic modeling and performance assessment of communication networks. The text begins with the basics of queueing theory before moving on to more advanced levels. The topics covered in the book are derived from the most cutting-edge research, project development, teaching activity, and discussions on the subject. They include applications of queuing and traffic theory in: LTE networks Wi-Fi networks Ad-hoc networks Automated vehicles Congestion control on the Internet The distinguished author seeks to show how insight into practical and real-world problems can be gained by means of quantitative modeling. Perfect for graduate students of computer engineering, computer science, telecommunication engineering, and electrical engineering, Network Traffic Engineering offers a supremely practical approach to a rapidly developing field of study and industry.
Download or read book Network Games written by Asu Ozdaglar and published by Springer Nature. This book was released on 2022-05-31 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional network optimization focuses on a single control objective in a network populated by obedient users and limited dispersion of information. However, most of today's networks are large-scale with lack of access to centralized information, consist of users with diverse requirements, and are subject to dynamic changes. These factors naturally motivate a new distributed control paradigm, where the network infrastructure is kept simple and the network control functions are delegated to individual agents which make their decisions independently ("selfishly"). The interaction of multiple independent decision-makers necessitates the use of game theory, including economic notions related to markets and incentives. This monograph studies game theoretic models of resource allocation among selfish agents in networks. The first part of the monograph introduces fundamental game theoretic topics. Emphasis is given to the analysis of dynamics in game theoretic situations, which is crucial for design and control of networked systems. The second part of the monograph applies the game theoretic tools for the analysis of resource allocation in communication networks. We set up a general model of routing in wireline networks, emphasizing the congestion problems caused by delay and packet loss. In particular, we develop a systematic approach to characterizing the inefficiencies of network equilibria, and highlight the effect of autonomous service providers on network performance. We then turn to examining distributed power control in wireless networks. We show that the resulting Nash equilibria can be efficient if the degree of freedom given to end-users is properly designed. Table of Contents: Static Games and Solution Concepts / Game Theory Dynamics / Wireline Network Games / Wireless Network Games / Future Perspectives
