Download or read book Digital Telephony and Network Integration written by Bernhard E. Keiser and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: What is "digital telephony"? To the authors, the term digital telephony de notes the technology used to provide a completely digital point-to-point voice communication system from end to end. This implies the use of digital technol ogy from one end instrument through the transmission facilities and switching centers to another end instrument. Digital telephony has become possible only because of the recent and ongoing surge of semiconductor developments allowing microminiaturization and high reliability along with reduced costs. This book deals with both the future and the present. Thus, the first chapter is entitled, "A Network in Transition." As baselines, Chapters 2, 3, and 10 provide the reader with the present status of telephone technology in terms of voice digitization as well as switching principles. The book is an outgrowth of the authors' continuing engineering education course, "Digital Telephony," which they have taught since January, 1980, to attendees from business, industry, government, common carriers, and tele phony equipment manufacturers. These attendees come from a wide variety of educational backgrounds. but generally have the equivalent of at least a bachelor's degree in electrical engineering. The book has been written to provide both the engineering student and the practicing engineer a working knowledge of the principles of present and future voice communication systems based upon the use of the public switched network. Problems or discussion questions have been included at the ends of the chapters to facilitate the book's use as a senior level or first year graduate level course text.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book RF Links for Ocean Data Stations written by R. F. Devereux and published by . This book was released on 1971 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment was conducted to provide data to compare with predicted path characteristics for frequencies in the 3 to 30 MHz oceanic telemetry band. Data obtained was for use in designing telemetry equipment for buoys at sea and for command receiving stations on shore. The receiving site was located in Hawaii; while the simulated buy-at-sea site was San Diego, California. (Author).

Download or read book Pulse Code Modulation Techniques written by Bill Waggener and published by Springer Science & Business Media. This book was released on 1995 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pulse Code Modulation Techniques brings together the theory and practice of PCM at the physical layer, where the "bits meet the silicon", so to speak. The key topics of symbol encoding, detection and synchronization are discussed, in detail, both from a theoretical and a practical standpoint. Topics which have been largely absent in text books, such as multiplexing, formatting and format synchronization, are also considered. Although PCM evolved as a communication technology, it has become an important technology in data recording. In a sense, magnetic or optical media are just specialized communication media and the key technologies discussed in this book are just as important to recording applications as to communications. PCM codes used for magnetic recording applications are discussed along with traditional communication codes. The design, analysis and implementation of a PCM system requires knowledge of very specific techniques associated with detection, synchronization and coding. The techniques have evolved from both ad hoc methods and complex theory. One of the goals of this book is to bridge the gap between theory and practice in the key techniques. Matched filters are not only discussed theoretically, but means for implementing them are also considered. The same is true with symbol synchronization.

Download or read book Network Simulation Experiments Manual written by Emad Aboelela and published by Elsevier. This book was released on 2007-12-05 with total page 205 pages. Available in PDF, EPUB and Kindle. Book excerpt: Network Simulation Experiments Manual, Second Edition, enables networking professional to visualize how networks work by providing free access to easy-to-install OPNET software. This software provides a virtual environment for modeling, analyzing, and predicting the performance of IT infrastructures, including applications, servers, and networking technologies. The book also goes a step further by providing detailed experiments on core networking topologies for use in this simulation environment. Each experiment is also accompanied by review questions, a lab report, and exercises. This book is recommended for graduate students and networking designers and professionals. - Useful experimentation for professionals in the workplace who are interested in learning and demonstrating the capability of evaluating different commercial networking products - The experiments in this manual are closely tied to Peterson/Davie: Computer Networks, fourth edition (a best-selling Morgan Kaufmann title), making it a perfect companion book.

Download or read book Microelectronics and Microcomputer Applications written by Michael George Hartley and published by . This book was released on 1983 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Scientific and Technical Publications written by and published by . This book was released on 1991 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1967 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pegasus Wing glove Experiment to Document Hypersonic Crossflow Transition written by Arild Bertelrud and published by . This book was released on 2000 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a recent flight experiment to study hypersonic crossflow transition, boundary layer characteristics were documented. A smooth steel glove was mounted on the first stage delta wing of Orbital Sciences Corporation's Pegasus® launch vehicle and was flown at speeds of up to Mach 8 and altitudes of up to 250,000 ft. The wing-glove experiment was flown as a secondary payload off the coast of Florida in October 1998. This paper describes the measurement system developed. Samples of the results obtained for different parts of the trajectory are included to show the characteristics and quality of the data. Thermocouples and pressure sensors (including Preston tubes, Stanton tubes, and a "probeless" pressure rake showing boundary layer profiles) measured the time-averaged flow. Surface hot-films and high-frequency pressure transducers measured flow dynamics. Because the vehicle was not recoverable, it was necessary to design a system for real-time onboard processing and transmission. Onboard processing included spectral averaging. The quality and consistency of data obtained was good and met the experiment requirements.

Download or read book NASA SP written by and published by . This book was released on 1965 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Space Communications Modulation and channels written by Louise C. Bickford and published by . This book was released on 1965 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book EE Systems Engineering Today written by and published by . This book was released on 1962 with total page 1406 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book International Reference Guide to Space Launch Systems written by Steven J. Isakowitz and published by AIAA. This book was released on 1999 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Principles of Pulse Code Modulation written by Kenneth William Cattermole and published by . This book was released on 1969 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Space Communications written by Louise C. Bickford and published by . This book was released on 1965 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Reference Publication written by and published by . This book was released on 1977 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Observation of the Earth and Its Environment written by Herbert J. Kramer and published by Springer. This book was released on 2019-01-30 with total page 1531 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is about spaceborne missions and instruments. In addition, surveys of airborne missions and of campaigns can be found on the accompanying CD-ROM in pdf-format. Compared with the 3rd edition the spaceborne part grew from about 300 to 1000 pages. The complete text - including the electronic-only chapters - contains more than 1900 pages. New chapters treat the history of Earth observation and university missions. The number of commercial Earth imaging missions has grown significantly. A chapter contains reference data and definitions. Extensive appendices provide a comprehensive glossary, acronyms and abbreviations and an index of sensors. An effort has been made to present the information in context, to point out relationships and interconnections. The book may serve as a reference and guide to all involved in the various national and international space programs: researchers and managers, service providers and data users, teachers and students.