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Application Des Transmissions A Porteuses Multiples Aux Communications Radiomobiles
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Book Synopsis APPLICATION DES TRANSMISSIONS A PORTEUSES MULTIPLES AUX COMMUNICATIONS RADIOMOBILES by : Ralf Haas
Download or read book APPLICATION DES TRANSMISSIONS A PORTEUSES MULTIPLES AUX COMMUNICATIONS RADIOMOBILES written by Ralf Haas and published by . This book was released on 1996 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: L'OBJECTIF DE CE TRAVAIL EST DE MONTRER LA POSSIBILITE DE L'APPLICATION DE LA MODULATION MULTIPORTEUSE A LA COUCHE PHYSIQUE D'UN SYSTEME DE COMMUNICATIONS RADIOMOBILES. LES DOMAINES DE RECHERCHE COUVERTS PAR CETTE THESE SONT NOTAMMENT L'EFFICACITE SPECTRALE, LA MISE EN FORME DU SIGNAL, L'ESTIMATION DU CANAL ET LE PARTAGE DE LA RESSOURCE. UNE ETUDE DE L'EFFICACITE SPECTRALE D'UN SYSTEME CELLULAIRE DANS L'HYPOTHESE D'UNE TRANSMISSION A PORTEUSES MULTIPLES NOUS PERMET DE TROUVER L'EFFICACITE SPECTRALE OPTIMALE D'UNE MODULATION CODEE ET DE COMPARER LES DIFFERENTES ARCHITECTURES CELLULAIRES. NOUS AVONS AUSSI OPTIMISE L'IMPULSION ELEMENTAIRE SERVANT A CONSTRUIRE LE SIGNAL MULTIPORTEUSE. ELLE DOIT VERIFIER CERTAINES CONDITIONS QUI NOUS AMENENT A UNE MISE EN FORME MIEUX ADAPTEE QUE LES SOLUTIONS CLASSIQUES. DANS UN SYSTEME RADIOMOBILES, L'INFORMATION DOIT ETRE STRUCTUREE EN TRAMES POUR DES PROBLEMES DE PARTAGE DE LA RESSOURCE. UNE DETECTION COHERENTE EXIGE AINSI L'ESTIMATION DU CANAL PAR BLOCS, INDEPENDAMMENT DE L'ESTIMATION QUI A ETE FAITE SUR LE BLOC PRECEDENT. ON MONTRE LES BONNES PERFORMANCES D'UN SCHEMA D'ESTIMATION DU CANAL PAR BLOCS BASE SUR DES SYMBOLES PILOTES. L'ACCES MULTIPLE ALEATOIRE PERMET A CHAQUE UTILISATEUR D'ACCEDER AU RESEAU FIXE PAR VOIE RADIO SANS EFFORT SUPPLEMENTAIRE DE SIGNALISATION AVEC UNE STATION DE BASE. LES PREMIERES EVALUATIONS THEORIQUES CORROBOREES PAR LES RESULTATS DE SIMULATIONS PERMETTENT DE DEFINIR UN CADRE POUR LA CONSTRUCTION D'UN SCHEMA D'ACCES MULTIPLE BASE SUR LES TRANSMISSIONS MULTIPORTEUSES. LES RESULTATS OBTENUS AU COURS DES RECHERCHES SUR CE SUJET MONTRENT QUE LA MODULATION A PORTEUSES MULTIPLES EST UN BON CANDIDAT POUR LA COUCHE PHYSIQUE D'UN SYSTEME DE COMMUNICATIONS RADIOMOBILES.
Book Synopsis Emerging Trends in Terahertz Engineering and System Technologies by : Arindam Biswas
Download or read book Emerging Trends in Terahertz Engineering and System Technologies written by Arindam Biswas and published by Springer Nature. This book was released on 2021-02-12 with total page 227 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights emerging trends in terahertz engineering and system technologies, mainly, devices, advanced materials, and various applications in THz technology. It includes advanced topics such as terahertz biomedical imaging, pattern recognition and tomographic reconstruction for THz biomedical imaging by use of machine learning and artificial intelligence, THz imaging radars for autonomous vehicle applications, THZ imaging system for security and surveillance. It also discusses theoretical, experimental, established and validated empirical work on these topics and the intended audience is both academic and professional.
Book Synopsis Application des transmissions a porteuses multiples aux communications radio mobiles by : Ralf Haas
Download or read book Application des transmissions a porteuses multiples aux communications radio mobiles written by Ralf Haas and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Wavelet Applications in Signal and Image Processing by :
Download or read book Wavelet Applications in Signal and Image Processing written by and published by . This book was released on 1999 with total page 1066 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Application Des Transmissions À Porteuses Multiples Aux Communications Radio Mobiles by : Ralf Haas
Download or read book Application Des Transmissions À Porteuses Multiples Aux Communications Radio Mobiles written by Ralf Haas and published by . This book was released on 1996 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advances in Gabor Analysis by : Hans G. Feichtinger
Download or read book Advances in Gabor Analysis written by Hans G. Feichtinger and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Applied and Numerical Harmonic Analysis (ANHA) book series aims to provide the engineering, mathematical, and scientific communities with significant developments in harmonic analysis, ranging from abstract har monic analysis to basic applications. The title of the series reflects the im portance of applications and numerical implementation, but richness and relevance of applications and implementation depend fundamentally on the structure and depth of theoretical underpinnings. Thus, from our point of view, the interleaving of theory and applications and their creative symbi otic evolution is axiomatic. Harmonic analysis is a wellspring of ideas and applicability that has flour ished, developed, and deepened over time within many disciplines and by means of creative cross-fertilization with diverse areas. The intricate and fundamental relationship between harmonic analysis and fields such as sig nal processing, partial differential equations (PDEs), and image processing is reflected in our state of the art ANHA series. Our vision of modern harmonic analysis includes mathematical areas such as wavelet theory, Banach algebras, classical Fourier analysis, time frequency analysis, and fractal geometry, as well as the diverse topics that impinge on them.
Book Synopsis Proceedings of SPIE--the International Society for Optical Engineering by :
Download or read book Proceedings of SPIE--the International Society for Optical Engineering written by and published by . This book was released on 1999 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis SPAWC'99 by : IEEE Signal Processing Society
Download or read book SPAWC'99 written by IEEE Signal Processing Society and published by IEEE Standards Office. This book was released on 1999 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aimed at personal communication engineers, the subjects covered in these proceedings include: CDMA; equalization; MMO; synchronization; multi-carrier systems; array processing; channel and sequence estimation; and blind chip and symbol rate CDMA receivers.
Book Synopsis OFDM Towards Fixed and Mobile Broadband Wireless Access by : Uma Shanker Jha
Download or read book OFDM Towards Fixed and Mobile Broadband Wireless Access written by Uma Shanker Jha and published by Artech House Publishers. This book was released on 2007 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presenting the state-of-the-art in broadband wireless access technology, this unique resource shows you how to design OFDM transceivers and develop a novel wireless transceiver system architecture ndash; one that streamlines wireless system development and deployment because of its reusability, scalability and flexibility. The book gives you a solid understanding of reconfigurable baseband transceiver architecture, fixed broadband access, and 802.16 (WiMax) and 802.20 network design.
Book Synopsis 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing by :
Download or read book 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing written by and published by . This book was released on 1999 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Hans G. Feichtinger Publisher :Springer Science & Business Media ISBN 13 :9780817642396 Total Pages :384 pages Book Rating :4.6/5 (423 download)
Book Synopsis Advances in Gabor Analysis by : Hans G. Feichtinger
Download or read book Advances in Gabor Analysis written by Hans G. Feichtinger and published by Springer Science & Business Media. This book was released on 2003 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text provides an overview of recent developments in Gabor analysis. Scientists in various disciplines related to the subject treat a range of topics from covering theory to numerics, as well as applications of Gabor analysis.
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Symposium Publisher : ISBN 13 : Total Pages :448 pages Book Rating :4.E/5 ( download)
Book Synopsis Propagation Effects and Circuit Performance of Modern Military Radio Systems with Particular Emphasis on Those Employing Bandspreading by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Symposium
Download or read book Propagation Effects and Circuit Performance of Modern Military Radio Systems with Particular Emphasis on Those Employing Bandspreading written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Electromagnetic Wave Propagation Panel. Symposium and published by . This book was released on 1989 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The importance of understanding radio wave propagation increases as radar and communication systems become more complex, i.e. digital systems, frequency adaptive systems, spread spectrum systems, etc. Increasingly wider frequency bandwidths are used in modern military systems.
Download or read book Trade-marks Journal written by and published by . This book was released on 1990-11 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantum Communications and Cryptography by : Alexander V. Sergienko
Download or read book Quantum Communications and Cryptography written by Alexander V. Sergienko and published by CRC Press. This book was released on 2018-10-03 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: All current methods of secure communication such as public-key cryptography can eventually be broken by faster computing. At the interface of physics and computer science lies a powerful solution for secure communications: quantum cryptography. Because eavesdropping changes the physical nature of the information, users in a quantum exchange can easily detect eavesdroppers. This allows for totally secure random key distribution, a central requirement for use of the one-time pad. Since the one-time pad is theoretically proven to be undecipherable, quantum cryptography is the key to perfect secrecy. Quantum Communications and Cryptography is the first comprehensive review of the past, present, and potential developments in this dynamic field. Leading expert contributors from around the world discuss the scientific foundations, experimental and theoretical developments, and cutting-edge technical and engineering advances in quantum communications and cryptography. The book describes the engineering principles and practical implementations in a real-world metropolitan network as well as physical principles and experimental results of such technologies as entanglement swapping and quantum teleportation. It also offers the first detailed treatment of quantum information processing with continuous variables. Technologies include both free-space and fiber-based communications systems along with the necessary protocols and information processing approaches. Bridging the gap between physics and engineering, Quantum Communications and Cryptography supplies a springboard for further developments and breakthroughs in this rapidly growing area.
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development Publisher : ISBN 13 : Total Pages : pages Book Rating :4.3/5 (126 download)
Book Synopsis AGARD Lecture Series by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Download or read book AGARD Lecture Series written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1991 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Foundations of Time-Frequency Analysis by : Karlheinz Gröchenig
Download or read book Foundations of Time-Frequency Analysis written by Karlheinz Gröchenig and published by Springer Science & Business Media. This book was released on 2013-12-01 with total page 367 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time-frequency analysis is a modern branch of harmonic analysis. It com prises all those parts of mathematics and its applications that use the struc ture of translations and modulations (or time-frequency shifts) for the anal ysis of functions and operators. Time-frequency analysis is a form of local Fourier analysis that treats time and frequency simultaneously and sym metrically. My goal is a systematic exposition of the foundations of time-frequency analysis, whence the title of the book. The topics range from the elemen tary theory of the short-time Fourier transform and classical results about the Wigner distribution via the recent theory of Gabor frames to quantita tive methods in time-frequency analysis and the theory of pseudodifferential operators. This book is motivated by applications in signal analysis and quantum mechanics, but it is not about these applications. The main ori entation is toward the detailed mathematical investigation of the rich and elegant structures underlying time-frequency analysis. Time-frequency analysis originates in the early development of quantum mechanics by H. Weyl, E. Wigner, and J. von Neumann around 1930, and in the theoretical foundation of information theory and signal analysis by D.
Book Synopsis An Introduction to Frames and Riesz Bases by : Ole Christensen
Download or read book An Introduction to Frames and Riesz Bases written by Ole Christensen and published by Birkhäuser. This book was released on 2016-05-24 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: This revised and expanded monograph presents the general theory for frames and Riesz bases in Hilbert spaces as well as its concrete realizations within Gabor analysis, wavelet analysis, and generalized shift-invariant systems. Compared with the first edition, more emphasis is put on explicit constructions with attractive properties. Based on the exiting development of frame theory over the last decade, this second edition now includes new sections on the rapidly growing fields of LCA groups, generalized shift-invariant systems, duality theory for as well Gabor frames as wavelet frames, and open problems in the field. Key features include: *Elementary introduction to frame theory in finite-dimensional spaces * Basic results presented in an accessible way for both pure and applied mathematicians * Extensive exercises make the work suitable as a textbook for use in graduate courses * Full proofs includ ed in introductory chapters; only basic knowledge of functional analysis required * Explicit constructions of frames and dual pairs of frames, with applications and connections to time-frequency analysis, wavelets, and generalized shift-invariant systems * Discussion of frames on LCA groups and the concrete realizations in terms of Gabor systems on the elementary groups; connections to sampling theory * Selected research topics presented with recommendations for more advanced topics and further readin g * Open problems to stimulate further research An Introduction to Frames and Riesz Bases will be of interest to graduate students and researchers working in pure and applied mathematics, mathematical physics, and engineering. Professionals working in digital signal processing who wish to understand the theory behind many modern signal processing tools may also find this book a useful self-study reference. Review of the first edition: "Ole Christensen’s An Introduction to Frames and Riesz Bases is a first-rate introduction to the field ... . The book provides an excellent exposition of these topics. The material is broad enough to pique the interest of many readers, the included exercises supply some interesting challenges, and the coverage provides enough background for those new to the subject to begin conducting original research." — Eric S. Weber, American Mathematical Monthly, Vol. 112, February, 2005
