Author: Publisher:
ISBN:
Category : Telecommunication
Languages : en
Pages : 576
Book Description
GLOBECOM '83
Author: International Reference Guide to Space Launch Systems
Author: Steven J. IsakowitzPublisher: AIAA
ISBN: 9781563473531
Category : Reference
Languages : en
Pages : 622
Book Description
This best-selling reference guide contains the most reliable and up-to-date material on launch programs in Brazil, China, Europe, India, Israel, Japan, Russia, Ukraine, and the United States. Packed with illustrations and figures, the third edition has been extensively updated and expanded, and offers a quick and easy data retrieval source for policymakers, planners, engineers, launch buyers, and students.
The Froehlich/Kent Encyclopedia of Telecommunications
Author: Fritz E. FroehlichPublisher: CRC Press
ISBN: 9780824729158
Category : Language Arts & Disciplines
Languages : en
Pages : 322
Book Description
Television Technology to Wire Antennas
Network Performance Modeling and Simulation
Author: Jean WalrandPublisher: CRC Press
ISBN: 100071750X
Category : Computers
Languages : en
Pages : 332
Book Description
This book makes the argument that performance modeling and simulation have become central issues in computer science and engineering, in part due to applications to the structures comprising the Internet. Dealing primarily with theory, tools and techniques as related to communications systems, the volume provides tutorials and surveys and relates new important research results. Each chapter presents background information, describes and analyzes important work done in the field and provides direction to the reader on future work and further readings. The topics covered include traffic models for A TM networks, simulation environments, analytical methods, interprocessor communications, and an evaluation of process architectures.
High Performance Switches and Routers
Author: H. Jonathan ChaoPublisher: John Wiley & Sons
ISBN: 0470113944
Category : Computers
Languages : en
Pages : 633
Book Description
As Internet traffic grows and demands for quality of service become stringent, researchers and engineers can turn to this go-to guide for tested and proven solutions. This text presents the latest developments in high performance switches and routers, coupled with step-by-step design guidance and more than 550 figures and examples to enable readers to grasp all the theories and algorithms used for design and implementation.
Assessment and Prediction of Speech Quality in Telecommunications
Author: Sebastian MöllerPublisher: Springer Science & Business Media
ISBN: 1475731175
Category : Science
Languages : en
Pages : 253
Book Description
The quality of a telecommunication voice service is largely inftuenced by the quality of the transmission system. Nevertheless, the analysis, synthesis and prediction of quality should take into account its multidimensional aspects. Quality can be regarded as a point where the perceived characteristics and the desired or expected ones meet. A schematic is presented which classifies different entities which contribute to the quality of a service, taking into account conversational, user as weIl as service related contributions. Starting from this concept, perceptively relevant constituents of speech communication quality are identified. The perceptive factors result from ele ments of the transmission configuration. A simulation model is developed and implemented which allows the most relevant parameters of traditional trans mission configurations to be manipulated, in real time and for the conversation situation. Inputs into the simulation are instrumentally measurable quality elements commonly used in transmission planning of telephone networks. A reduced set of these quality elements forms a basis for models which aim at predicting mouth-to-ear quality as it would be perceived by a user of the sys tem. These models are an important tool for the planner of telecommunication networks, as they allow the expected quality to be estimated in advance, even before the network has been set up. Two well-known models (the SUBMOD and the E-model) are analyzed in more detail, with an emphasis on the psy choacoustic and psychophysical backgrounds.
Data Communication Systems and Their Performance
Author: G. PujollePublisher: Elsevier
ISBN: 1483298418
Category : Technology & Engineering
Languages : en
Pages : 514
Book Description
The research papers in this volume describe recent, original developments in techniques, tools and applications in the area of communication system performance. Involved in the project are researchers from the world's leading universities, research institutes and companies.
Multiple Access Protocols for Mobile Communications
Author: Alex BrandPublisher: John Wiley & Sons
ISBN: 9780471498773
Category : Technology & Engineering
Languages : en
Pages : 482
Book Description
In leicht verständlichem Stil erläutern die Autoren dieses Buches Anforderungen an Multiple-Access-Protokolle für den Mobilfunk. Zu Beginn werden zellulare Kommunikationssysteme der 2. und 3. Generation eingeführt. Ausführlich beschrieben werden dann MA-Protokolle für paketorientierte zellulare Systeme. Ein großer Teil der vorgestellten Resultate stammt aus eigenen Forschungsarbeiten der Autoren, u.a. zur Verbesserung der Protokolle und zur Modellierung der physikalischen OSI-Schicht.
Wireless Communications
Author: Asrar U. H. SheikhPublisher: Springer Science & Business Media
ISBN: 9781402076213
Category : Science
Languages : en
Pages : 792
Book Description
Intended for a graduate course on wireless communications, this textbook concentrates more on conceptual fundamentals than on rigorous mathematical treatment. The author first describes the radio environment, discussing issues of radio wave propagation theory, signal strength, and radio coverage are
Digital Phase Modulation
Author: John B. AndersonPublisher: Springer Science & Business Media
ISBN: 1489920315
Category : Technology & Engineering
Languages : en
Pages : 509
Book Description
The last ten years have seen a great flowering of the theory of digital data modulation. This book is a treatise on digital modulation theory, with an emphasis on these more recent innovations. It has its origins in a collabor ation among the authors that began in 1977. At that time it seemed odd to us that the subjects of error-correcting codes and data modulation were so separated; it seemed also that not enough understanding underlay the mostly ad hoc approaches to data transmission. A great many others were intrigued, too, and the result was a large body of new work that makes up most of this book. Now the older disciplines of detection theory and coding theory have been generalized and applied to the point where it is hard to tell where these end and the theories of signal design and modulation begin. Despite our emphasis on the events of the last ten years, we have included all the traditional topics of digital phase modulation. Signal space concepts are developed, as are simple phase-shift-keyed and pulse-shaped modulations; receiver structures are discussed, from the simple linear receiver to the Viterbi algorithm; the effects of channel filtering and of hardlimiting are described. The volume thus serves well as a pedagogical book for research engineers in industry and second-year graduate students in communications engineering. The production of a manageable book required that many topics be left out.