Download or read book Implementation of Multi Frequency Modulation on an Industry Standard Computer written by Terry K. Gantenbein and published by . This book was released on 1989 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Application of Multi Frequency Modulation MFM for High Speed Data Communications to a Voice Frequency Channel written by and published by . This book was released on 1990 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-Frequency Modulation (MFM) has been developed at NPS using both differential quadrature-phase-shift-keying (DQPSK) and differential-quadrature- amplitude-modulation (DQAM) encoding formats. Previous applications of these encoding formats were on industry standard computers (PC) over a 16-20 kHz channel. This report discusses the implementation of MFM to a voice frequency channel of 200-3400 Hz, for possible future use with high-speed modems over switched telephone networks. Research and testing for this report included the DQPSK and differential 16-quadrature-amplitude-modulation (D16-QAM) encoding formats implemented on PCs. Experimental results of the implemented MFM signal were comparable to theory with acceptable bit error rates for input signal-to-noise ratios (SNR) of 15 dB and higher.

Download or read book Real Time Multi Frequency Modulation Using Differentially Encoded Signal Constellations written by and published by . This book was released on 1990 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report discusses advances in the development of a multi- frequency modulation (MFM) packet communications system on an industry standard computer. Transmitter and receiver programs are described that control vector signal processors and data acquisition devices. Further, these programs encode, modulate, demodulate, and decode the MFM signal. The throughput data rate was doubled, the encoding/decoding process was implemented in near real-time, and a personal computer plug-in board was designed and built to provide synchronization between the transmitter and receiver. This MFM implementation provided acceptable bit error rates at input signal-to-noise ratios of 15 dB and above.

Download or read book Implementation of Multi Frequency Modulation with Trellis Encoding and Viterbi Decoding Using a Digital Signal Processing Board written by and published by . This book was released on 1991 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-Frequency Modulation has been the topic of several papers at NPS. In past systems the majority of time required for the generation of the MFM signal was due to the software routine used to implement the FFT. In this report a Digital Signal Processor was used to reduce the time needed to generate the FFT. The use of Trellis coding and Viterbi decoding on a Digital Signal Processor was also investigated. Assembly language programs for three encoder/ decoder systems were developed. The first uses a 16 QAM signal, the second uses a 2/3 rate convolutional encoder and Viterbi decoder and the third uses the V.32 convolutional encoder and a Viterbi decoder.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1976 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Signal Processing Theories and Applications written by and published by . This book was released on 1990 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1990 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computerworld written by and published by . This book was released on 1988-05-09 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: For more than 40 years, Computerworld has been the leading source of technology news and information for IT influencers worldwide. Computerworld's award-winning Web site (Computerworld.com), twice-monthly publication, focused conference series and custom research form the hub of the world's largest global IT media network.

Download or read book Communications Engineering e Mega Reference written by Erik Dahlman and published by Academic Press. This book was released on 2009-03-23 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: A one-stop Desk Reference, for R&D engineers involved in communications engineering; this is a book that will not gather dust on the shelf. It brings together the essential professional reference content from leading international contributors in the field. Material covers a wide scope of topics including voice, computer, facsimile, video, and multimedia data technologies * A fully searchable Mega Reference Ebook, providing all the essential material needed by Communications Engineers on a day-to-day basis. * Fundamentals, key techniques, engineering best practice and rules-of-thumb together in one quick-reference.* Over 2,500 pages of reference material, including over 1,500 pages not included in the print edition

Download or read book Proceedings of the 4th International Conference on Power and Electrical Engineering written by Jian Li and published by Springer Nature. This book was released on with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the 2009 International Conference on Signals Systems and Automation ICSSA 2009 written by Himanshu Soni and published by Universal-Publishers. This book was released on 2010-04-30 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a collection of papers from the 2009 International Conference on Signals, Systems and Automation (ICSSA 2009). The conference at a glance: - Pre-conference Workshops/Tutorials on 27th Dec, 2009 - Five Plenary talks - Paper/Poster Presentation: 28-29 Dec, 2009 - Demonstrations by SKYVIEWInc, SLS Inc., BSNL, Baroda Electric Meters, SIS - On line paper submission facility on website - 200+ papers are received from India and abroad - Delegates from different countries including Poland, Iran, USA - Delegates from 16 states of India - Conference website is seen by more than 3000 persons across the world (27 countries and 120 cities)

Download or read book Data Communications and Networking for Manufacturing Industries written by Dario J. Toncich and published by Dario Toncich. This book was released on 1993 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Short range Wireless Communication written by Alan Bensky and published by Newnes. This book was released on 2019-08-01 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Short-range Wireless Communication, Third Edition, describes radio theory and applications for wireless communication with ranges of centimeters to hundreds of meters. Topics covered include radio wave propagation, the theory of antennas and transmission lines, architectures of transmitters, and radio system design guidelines as a function of basic communication parameters, such as sensitivity, noise and bandwidth. Topics new to this edition include MIMO, metamaterials, inductance coupling for loop antennas, very high throughput Wi-Fi specifications, Bluetooth Low Energy, expanded coverage of RFID, wireless security, location awareness, wireless sensor networks, Internet of Things, millimeter wave and optical short-range communications, body area networks, energy harvesting, and more. Engineers, programmers, technicians and sales management personnel who support short-range wireless products will find the book a comprehensive and highly readable source to boost on-the-job performance and satisfaction. Presents comprehensive, up-to-date coverage of short-range wireless technologies Provides an in-depth explanation of wave propagation and antennas Describes communication system components and specifications, including transmitters, receivers, frequency synthesizers, sensitivity, noise, distortion, and more Includes an introduction to error detection and correction

Download or read book Introduction to Wireless Communications and Networks written by Krishnamurthy Raghunandan and published by Springer Nature. This book was released on 2022-03-31 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an intuitive and accessible introduction to the fundamentals of wireless communications and their tremendous impact on nearly every aspect of our lives. The author starts with basic information on physics and mathematics and then expands on it, helping readers understand fundamental concepts of RF systems and how they are designed. Covering diverse topics in wireless communication systems, including cellular and personal devices, satellite and space communication networks, telecommunication regulation, standardization and safety, the book combines theory and practice using problems from industry, and includes examples of day-to-day work in the field. It is divided into two parts – basic (fundamentals) and advanced (elected topics). Drawing on the author’s extensive training and industry experience in standards, public safety and regulations, the book includes information on what checks and balances are used by wireless engineers around the globe and address questions concerning safety, reliability and long-term operation. A full suite of classroom information is included.

Download or read book Indoor Wireless Communications written by Alejandro A. Aragón-Zavala and published by John Wiley & Sons. This book was released on 2017-07-03 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indoor Wireless Communications: From Theory to Implementation provides an in-depth reference for design engineers, system planners and post graduate students interested in the vastly popular field of indoor wireless communications. It contains wireless applications and services for in-building scenarios and knowledge of key elements in the design and implementation of these systems. Technologies such as Wireless Local Area Networks, Bluetooth, ZigBee, Indoor Optical Communications, WiMAX, UMTS and GSM for indoor environments are fully explained and illustrated with examples. Antennas and propagation issues for in-building scenarios are also discussed, emphasizing models and antenna types specifically developed for indoor communications. An exhaustive survey on indoor wireless communication equipment is also presented, covering all available technologies including antennas, distribution systems, transceivers and base stations.