Atif S. Wasi · 2008
Wireless and ATM ( Asynchronous Transfer Mode) are in it's infancy. No standards have been defined by either the ATM Forum or ITU-T, yet. Research have been going on to develop a protocol that will run on wireless medium without much delay and errors. ATM-type wireless networks will play an important role in the broadband communications network of the future.
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http://www.geoaps.com · Bulletin of Miscellaneous Information (Royal Gardens Kew) · 2002
Use your Pocket PC to log sales, deliveries or any other processes, upload the transaction details for instant viewing by remote users (desktop client included), and automatically send confirmation e-mails direct from the Pocket PC with the touch of a button.
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Ike Antkaretoo · 2013
The transistor must work. After years of unfortunate research into multicast applications, we prove the improvement of Smalltalk, which embodies the appropriate principles of machine learning. RoridMuck, our new methodology for cooperative methodologies, is the solution to all of these obstacles. I.
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Bluetooth And Handheld, Recommendations Of The National, Tom Karygiannis et al. · 2002
This document is a publication of the National Institute of Standards and Technology (NIST) and is not subject to U.S. copyright. Certain commercial products are described in this document as examples only. Inclusion or exclusion of any product does not imply endorsement or non-endorsement by NIST or any agency of the U.S. Government. Inclusion of a product name does not imply that the product is the best or only product suitable for the specified purpose. Acknowledgments The authors wish to express their sincere thanks to numerous members of government, industry, and academia who have commented on this document. First, the authors wish to express their thanks to the staff at Booz Allen Hamilton who contributed to this document. In particular, their appreciation goes to Rick Nicholson, Brendan Goode, Christine Kerns, Sharma Aditi, and Brian Miller for their research, technical support, and contributions to this document. The authors express their appreciation to Bill Burr, Murugiah Souppaya, Tim Grance, Ray Snouffer, Sheila Frankel, and John Wack of NIST, for providing valuable contributions to the technical content of this publication. The authors would also like to express their thanks to security experts Russ Housley, Markus Jacobsson, Jan-Ove Larsson, Simon Josefsson, Stephen Whitlock, Brian Seborg, Pascal Meunier, William Arbaugh, Joesph Kabara, David Tipper, and Prashanth Krishnanmurthy for their valuable comments and suggestions. Finally, the authors wish to thank especially Matthew Gast, Keith Rhodes, and the Bluetooth Special Interest Group for their critical review and feedback during the public comments period. Contributions were also made by Rick Doten, Jerry Harold, Stephen Palmer, Michael D. Gerdes, Wally Wilhoite, Ben Halpert, Susan Landau, Sandeep Dhame...
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Walke, Bernhard · RWTH Publications (RWTH Aachen) · 1998
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Osuna Delgado, Óscar · RiuNet (Politechnical University of Valencia) · 2015
Se pretende la realización de un Proyecto o Trabajo Fin de Carrera alrededor de las \ncomunicaciones inalámbricas, comúnmente denominadas redes wireless. Como punto en \nconcreto del trabajo me centraré en Lavapies Wireless (LaWa), comunidad wireless de \ncarácter vecinal del barrio del mismo nombre de Madrid. \nLos objetivos de esta red son los mismos que voy a perseguir yo con este trabajo. Crear \nuna infraestructura sólida, que dé cobertura al barrio. \nQuiero dar al Proyecto no sólo el enfoque técnico adecuado, sino explicar por qué nacen \neste tipo de redes y dotar al proyecto de un carácter social.
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V. Ford Greaves · Scientific American · 1914
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Oscar Delgado · 2015
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2010
Wireless keyboard and mouse RF enabled remote controls Product Description The CC2500 is a low-cost 2.4 GHz transceiver designed for very low-power wireless applications. The circuit is intended for the 2400-2483.5 MHz ISM (Industrial, Scientific and Medical) and SRD (Short Range Device) frequency band. The RF transceiver is integrated with a highly configurable baseband modem. The modem supports various modulation formats and has a configurable data rate up to 500 kBaud. CC2500 provides extensive hardware support for packet handling, data buffering, burst transmissions, clear channel assessment, link quality indication, and wake-on-radio. The main operating parameters and the 64byte transmit/receive FIFOs of CC2500 can be controlled via an SPI interface. In a typical system, the CC2500 will be used together with a microcontroller and a few additional passive components.
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Saeid Bahanfar, Helia Kousha, Ladan Darougaran · 2014
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Seung-jong Park, Ramanuja Vedantham, Raghupathy Sivakumar et al. · 2008
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2014
Deployment of a mobile wireless sensor network with k-coverage constraint: a cellular learning automata approach Deployment of a wireless sensor network is a challenging problem, especially when the environment of the network does not allow either of the random deployment or the exact placement of sensor nodes. If sensor nodes are mobile, then one approach to overcome this problem is to first deploy sensor nodes randomly in some initial region within the area of the network, and then let the sensor nodes to move around and cooperatively and gradually increase the covered section of the area. Recently, a cellular learning automata-based deployment strategy, called CLA-DS, is introduced in literature which follows this approach and is robust against inaccuracies which may occur in the measurements of sensor positions or in the movements of sensor nodes. Despite its advantages, this deployment strategy covers every point within the area of the network with only one sensor node, which is not enough for applications with k-coverage requirement. In this paper, we extend CLA-DS so that it can address the k-coverage requirement. This extension, referred to as CLA-EDS, is also able to address k-coverage requirement with different values of k in different regions of the network area. Experimental results have shown that the proposed deployment strategy, in addition to the advantages it inherits from CLA-DS, outperforms existing algorithms such as DSSA, IDCA, and DSLE in covering the network area, especially when required degree of coverage differs in different regions of the network. Within this Article
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Sungook Hong · The MIT Press eBooks · 2001
A new look at the early history of wireless communication. By 1897 Guglielmo Marconi had transformed James Clerk Maxwell's theory of electromagnetic waves into a workable wireless telegraphy system, and by 1907 Lee de Forest had invented the Audion, a feedback amplifier and oscillator that opened the way to practical radio transmission. Fifteen years after Marconi's invention, wireless had become an essential means of communication, as well as a hobby for many. This book offers a new perspective on the early days of wireless communication. Drawing on previously untapped archival evidence and recent work in the history and sociology of science and technology, it examines the substance and context of both experimental and theoretical aspects of engineering and scientific practices in the first years of this technology. It offers new insights into the relationship between Marconi and his scientific advisor, the physicist John Ambrose Fleming (inventor of the vacuum tube). It includes the full story of the infamous 1903 incident in which Marconi's opponent Nevil Maskelyne interfered with Fleming's public demonstration of Marconi's syntonic (tuning) system at the Royal Institution by sending derogatory messages from his own transmitter. The analysis of the Maskelyne affair highlights the struggle between Marconi and his opponents, the efficacy of early syntonic devices, Fleming's role as a public witness to Marconi's private experiments, and the nature of Marconi's "shows." It also provides a rare case study of how the credibility of an engineer can be created, consumed, and suddenly destroyed. The book concludes with a discussion of de Forest's Audion and the shift from wireless telegraphy to radio.
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Peng Wei, Quanquan Gu, Dengfeng Sun · 2016
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Learn More, Display Power, Security Block et al. · 2011
Additional ICs for financial terminals................................................................................................................................................... 14
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Claudia Canali, M. Elena Renda, Paolo Santi et al. · 2012
Abstract—Wireless mesh networks are a promising area for the deployment of new wireless communication and networking technologies. In this paper, we address the problem of enabling effective peer-to-peer resource sharing in this type of networks. Starting from the well-known Chord protocol for resource sharing in wired networks, we propose a specialization that accounts for peculiar features of wireless mesh networks: namely, the availability of a wireless infrastructure, and the 1-hop broadcast nature of wireless communication, which bring to the notions of location-awareness and MAC layer cross-layering. Through extensive packetlevel simulations, we investigate the separate effects of location-awareness and MAC layer cross-layering, and of their combination, on the performance of the P2P application. The combined protocol, MESHCHORD, reduces message overhead of as much as 40 % with respect to the basic Chord design, while at the same time improving the information retrieval performance. Notably, differently from the basic Chord design, our proposed MESHCHORD specialization displays information retrieval performance resilient to the presence of both CBR and TCP background traffic. Overall, the results of our study suggest that MESHCHORD can be successfully utilized for implementing file/resource sharing applications in wireless mesh networks. Index Terms—Wireless mesh networks, community networks, distributed hash tables, peer-to-peer resource sharing, cross-layering.
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Erwan Ermel, Anne Fladenmuller, Guy Pujolle · 2016
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Yu Cao, Steven D. Blostein · 2016
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2026
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Timothy Stapko · Elsevier eBooks · 2008
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