T. K. Sarkar – författare
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5 produkter
5 produkter
Del 198 - Wiley Series in Microwave and Optical Engineering
Physics of Multiantenna Systems and Broadband Processing
Inbunden, Engelska, 2008
1 890 kr
Skickas inom 11-20 vardagar
An analysis of the physics of multiantenna systems Multiple-Input Multiple-Output (MIMO) technology is one of the current hot topics in emerging wireless technologies. This book fills the important need for an authoritative reference on the merits of MIMO systems based on physics and provides a sound theoretical basis for its practical implementation. The book also addresses the important issues related to broadband adaptive processing.Written by three internationally known researchers, Physics of Multiantenna Systems and Broadband Processing: Provides a thorough discussion of the physical and mathematical principles involved in MIMO and adaptive systems Examines the electromagnetic framework of wireless communications systems Uses Maxwell's theory to provide a system-based framework for the abstract concept of channel capacity Performs various numerical simulations to observe how a typical system will behave in practice Provides a mathematical formulation for broadband adaptive processing and direction-of-arrival estimation using real antenna arrays Integrates signal processing and electromagnetics to address the performance of realistic multiantenna systems With Physics of Multiantenna Systems and Broadband Processing, communication systems engineers, graduate students, researchers, and developers will gain a thorough, scientific understanding of this important new technology.
Del 214 - Wiley Series in Microwave and Optical Engineering
Parallel Solution of Integral Equation-Based EM Problems in the Frequency Domain
Inbunden, Engelska, 2009
1 497 kr
Skickas inom 5-8 vardagar
A step-by-step guide to parallelizing cem codesThe future of computational electromagnetics is changing drastically as the new generation of computer chips evolves from single-core to multi-core. The burden now falls on software programmers to revamp existing codes and add new functionality to enable computational codes to run efficiently on this new generation of multi-core CPUs. In this book, you'll learn everything you need to know to deal with multi-core advances in chip design by employing highly efficient parallel electromagnetic code. Focusing only on the Method of Moments (MoM), the book covers: In-Core and Out-of-Core LU Factorization for Solving a Matrix Equation A Parallel MoM Code Using RWG Basis Functions and ScaLAPACK-Based In-Core and Out-of-Core SolversA Parallel MoM Code Using Higher-Order Basis Functions and ScaLAPACK-Based In-Core and Out-of-Core SolversTurning the Performance of a Parallel Integral Equation SolverRefinement of the Solution Using the Conjugate Gradient MethodA Parallel MoM Code Using Higher-Order Basis Functions and Plapack-Based In-Core and Out-of-Core SolversApplications of the Parallel Frequency Domain Integral Equation SolverAppendices are provided with detailed information on the various computer platforms used for computation; a demo shows you how to compile ScaLAPACK and PLAPACK on the Windows® operating system; and a demo parallel source code is available to solve the 2D electromagnetic scattering problems.Parallel Solution of Integral Equation-Based EM Problems in the Frequency Domain is indispensable reading for computational code designers, computational electromagnetics researchers, graduate students, and anyone working with CEM software.
Del 220 - Wiley Series in Microwave and Optical Engineering
Time and Frequency Domain Solutions of EM Problems
Using Integral Equations and a Hybrid Methodology
Inbunden, Engelska, 2010
1 260 kr
Skickas inom 5-8 vardagar
Numerical solutions of electromagnetic field problems is an area of paramount interest in academia, industry and government. This book provides a compendium of solution techniques dealing with integral equations arising in electromagnetic field problems in time and frequency domains. Written by leading researchers in the field, it documents the authors' unique space/time separation approach using Laguerre polynomials. Numerous examples that illustrate the various methodologies and user-friendly computer codes make this volume highly accessible for engineers, researchers, and scientists.
Del 143 - Wiley Series in Microwave and Optical Engineering
Smart Antennas
Inbunden, Engelska, 2003
1 940 kr
Skickas inom 5-8 vardagar
A valuable addition to the Wiley Series in Microwave and Optical EngineeringToday's modern wireless mobile communications depend on adaptive "smart" antennas to provide maximum range and clarity. With the recent explosive growth of wireless applications, smart antenna technology has achieved widespread commercial and military applications.The only book available on the topic of adaptive antennas using digital technology, this text reflects the latest developments in smart antenna technology and offers timely information on fundamentals, as well as new adaptive techniques developed by the authors. Coupling electromagnetic aspects of antenna design with signal processing techniques designed to promote accurate and efficient information exchange, the text presents various mechanisms for characterizing signal-path loss associated with signal propagation, particularly for mobile wireless communications systems based on such techniques as joint space-frequency adaptive processing.In clear, accessible language, the authors:* explain the difference between adaptive antennas and adaptive signal processing* Illustrate the procedures for adaptive processing using directive elements in a conformal array* clarify multistage analysis procedure which combines electromagnetic analysis with signal processing* present a survey of the various models for characterizing radio wave propagation in urban and rural environments* describe a method wherein it is possible to identify and eliminate multipath without spatial diversity* optimize the location of base stations in a complex environmentThe text is an excellent resource for researchers and engineers working in electromagnetics and signal processing who deal with performance improvement of adaptive techniques, as well as those who are concerned with the characterization of propagation channels and applications of airborne phased arrays.
Del 177 - Wiley Series in Microwave and Optical Engineering
History of Wireless
Inbunden, Engelska, 2006
1 506 kr
Skickas inom 5-8 vardagar
Important new insights into how various components and systems evolved Premised on the idea that one cannot know a science without knowing its history, History of Wireless offers a lively new treatment that introduces previously unacknowledged pioneers and developments, setting a new standard for understanding the evolution of this important technology.Starting with the background-magnetism, electricity, light, and Maxwell's Electromagnetic Theory-this book offers new insights into the initial theory and experimental exploration of wireless. In addition to the well-known contributions of Maxwell, Hertz, and Marconi, it examines work done by Heaviside, Tesla, and passionate amateurs such as the Kentucky melon farmer Nathan Stubblefield and the unsung hero Antonio Meucci. Looking at the story from mathematical, physics, technical, and other perspectives, the clearly written text describes the development of wireless within a vivid scientific milieu.History of Wireless also goes into other key areas, including: The work of J. C. Bose and J. A. FlemingGerman, Japanese, and Soviet contributions to physics and applications of electromagnetic oscillations and wavesWireless telegraphic and telephonic development and attempts to achieve transatlantic wireless communicationsWireless telegraphy in South Africa in the early twentieth centuryAntenna development in Japan: past and presentSoviet quasi-optics at near-mm and sub-mm wavelengthsThe evolution of electromagnetic waveguidesThe history of phased array antennasAugmenting the typical, Marconi-centered approach, History of Wireless fills in the conventionally accepted story with attention to more specific, less-known discoveries and individuals, and challenges traditional assumptions about the origins and growth of wireless. This allows for a more comprehensive understanding of how various components and systems evolved. Written in a clear tone with a broad scientific audience in mind, this exciting and thorough treatment is sure to become a classic in the field.