This book develops the basic concepts in understanding Analog Communications. Beginning with coverage of amplitude modulation, including the time and frequency domain representations of double sideband, single sideband, and vestigial sideband modulation, and introduces the student to the fundamental ideas of quadrature amplitude modulation, frequency division multiplexing, and digital communications using on-off keying. The author continues with additional discussion and coverage of the time and frequency domain representations of frequency and phase modulation, including bandwidth calculations, and the use of frequency shift keying, phase shift keying, and differential phase shift keying for the transmission of digital information. Contents include applications and further analyses of the effects of channel noise on amplitude, phase, and frequency modulation performance based on input versus output signal to noise ratios and some system comparisons are discussed.
This book develops the concepts for the transmission of digital information sequences through analog, band limited channels, including the topics of pulse shaping, channels with amplitude and delay distortion, eye patterns, zero forcing and mean squared error equalization, and data scrambling. The text considers the effects of noise in digital communications, developing the fundamental ideas of signal space, optimum symbol-by-symbol detection, and modulation system design, with particular emphasis on maximum likelihood and maximum a posteriori detection and system performance comparisons based on energy per bit to noise ratio and average error probability. The key technique of maximum likelihood sequence estimation is also developed. Tutorial coverage provides an introduction to block and convolutional codes for error control coding, including coding and decoding methods for error detection and correction, tree and trellis representations, and Viterbi decoding. Some performance comparisons for selected codes in terms of energy per bit to noise ratio versus bit error probability are presented. This book examines joint coding and modulation methods such as constant envelope modulation and trellis coded modulation, including examples such as minimum shift keying and offset quadrature phase shift keying.
This book provides the background and the mathematical methods necessary to understand the basic transforms in signal processing and linear systems and probability and random processes to prepare for in depth study of analog and digital communications systems. This tutorial presentation provides developments of Fourier series and other orthogonal series, including trigonometric and complex exponential Fourier series, least squares approximations and generalized Fourier series, and the spectral content of periodic signals. This text thoroughly covers Fourier transform pairs for continuous time signals, Fourier transform properties, and the magnitude and phase of Fourier transforms. The author includes discussions of techniques for the analysis of continuous time linear systems in the time and frequency domains with particular emphasis on the system transfer function, impulse response, system/filter bandwidth, power and energy calculations, and the time domain sampling theorem. The basics of probability and random processes, including the key concepts of expected value, variance, characteristic functions, common probability distributions, autocorrelation, power spectral densities, wide sense stationarity, and ergodicity, are all developed in some detail. Many examples and problems are included to illustrate and examine these topics. • Provides developments of Fourier series and other orthogonal series • Presents fundamental Fourier transform properties and example applications • Discusses techniques for the analysis of continuous time linear systems in the time and frequency domains • Presents a fundamental development of probability and random variables • Develops the basic ideas of random processes including autocorrelation, power spectral densities, stationarity, and ergodicity
Digital Compression for Multimedia" captures in a single reference the current standards for speech, audio, video, image, fax and file compression. It is intended for engineers and computer scientists designing and implementing compression techniques, system integrators, technical managers, and researchers. The essential ideas and motivation behind the various compression methods are presented and insight is provided into the evolution of the standards.
On one easy to use CD-ROM, The Mobile Communications Handbook on CD-ROM covers: Principles of analog and digital communication with cordless telephones Wireless local area networks (LANs) International technology standards. Cellular mobile radio Personal communication systems User location and addressing Wireless data and technology standards Its tremendous scope and ease of use makes Mobile Communications on CD-ROM the primary reference for every aspect of mobile communications. Mobile Communications Handbook on CD-ROM is exactly what you need to keep up with this growing and evolving field.
This book develops the basic concepts in understanding Analog Communications. Beginning with coverage of amplitude modulation, including the time and frequency domain representations of double sideband, single sideband, and vestigial sideband modulation, and introduces the student to the fundamental ideas of quadrature amplitude modulation, frequency division multiplexing, and digital communications using on-off keying. The author continues with additional discussion and coverage of the time and frequency domain representations of frequency and phase modulation, including bandwidth calculations, and the use of frequency shift keying, phase shift keying, and differential phase shift keying for the transmission of digital information. Contents include applications and further analyses of the effects of channel noise on amplitude, phase, and frequency modulation performance based on input versus output signal to noise ratios and some system comparisons are discussed.
This book develops the concepts for the transmission of digital information sequences through analog, band limited channels, including the topics of pulse shaping, channels with amplitude and delay distortion, eye patterns, zero forcing and mean squared error equalization, and data scrambling. The text considers the effects of noise in digital communications, developing the fundamental ideas of signal space, optimum symbol-by-symbol detection, and modulation system design, with particular emphasis on maximum likelihood and maximum a posteriori detection and system performance comparisons based on energy per bit to noise ratio and average error probability. The key technique of maximum likelihood sequence estimation is also developed. Tutorial coverage provides an introduction to block and convolutional codes for error control coding, including coding and decoding methods for error detection and correction, tree and trellis representations, and Viterbi decoding. Some performance comparisons for selected codes in terms of energy per bit to noise ratio versus bit error probability are presented. This book examines joint coding and modulation methods such as constant envelope modulation and trellis coded modulation, including examples such as minimum shift keying and offset quadrature phase shift keying.
This book provides the background and the mathematical methods necessary to understand the basic transforms in signal processing and linear systems and probability and random processes to prepare for in depth study of analog and digital communications systems. This tutorial presentation provides developments of Fourier series and other orthogonal series, including trigonometric and complex exponential Fourier series, least squares approximations and generalized Fourier series, and the spectral content of periodic signals. This text thoroughly covers Fourier transform pairs for continuous time signals, Fourier transform properties, and the magnitude and phase of Fourier transforms. The author includes discussions of techniques for the analysis of continuous time linear systems in the time and frequency domains with particular emphasis on the system transfer function, impulse response, system/filter bandwidth, power and energy calculations, and the time domain sampling theorem. The basics of probability and random processes, including the key concepts of expected value, variance, characteristic functions, common probability distributions, autocorrelation, power spectral densities, wide sense stationarity, and ergodicity, are all developed in some detail. Many examples and problems are included to illustrate and examine these topics. • Provides developments of Fourier series and other orthogonal series • Presents fundamental Fourier transform properties and example applications • Discusses techniques for the analysis of continuous time linear systems in the time and frequency domains • Presents a fundamental development of probability and random variables • Develops the basic ideas of random processes including autocorrelation, power spectral densities, stationarity, and ergodicity
This newly updated edition prepares applicants to excel in Civil Service Exams for stenographer, typist, clerk, and general office machine operator positions. There are a total of 13 model tests, including five diagnostic tests plus six general tests, closely simulating the real Civil Service Examinations.
This book tells the story of Thomas Carey, who went from Somerset to Somerset. That journey from Somerset, England, to Somerset County, Maryland, in the mid-1600s would set into motion events that would determine the fate of several future generations. Based on painstaking research, this account chronicles the progress of each generation and highlights the nomadic nature of the family. It leads readers through his descendants’ early life in Maryland, down through Virginia, and into Orange County, North Carolina. The next stop appears to be area around New Bern, North Carolina. The 1830s brought about dense living conditions in North Carolina. The family partnered with other settlers and moved west via wagon train, crossing the Great Smokey Mountains and traveling a primitive route that subsequently became U.S. Highway 70. Along the way, some settled in hamlets and scarcely populated communities in East and Middle Tennessee. Most continued to press onward, seeking inexpensive farmland, abundant fresh water, and the opportunity to live the American Dream.
THE ULTIMATE RESOURCE FOR RECORD COLLECTORS, WITH MORE THAN 100,000 PRICES LISTED! -- COMPREHENSIVE. From ABBA to The Zombies, B. B. King to Queen Latifah, Elvis to Madonna, this complete sourcebook has it all, listing every known single and album by every charted artist, some from as early as 1926 to the superstars of today. The Official Price Guide to Records also includes crossover hits from jazz, country, rhythm and blues, and soul charts--plus promotional records, limited editions, compilations, and picture sleeves. -- CLEARLY ORGANIZED. Indexed by artist for fast, easy access, each record is easily identified by label, manufacturer's catalog number, date, and format. -- WRITTEN BY THE EXPERT. Nationally renowned author and syndicated columnist Jerry Osborne has reviewed sales lists, auction results, and record shows, and has polled collectors from every U.S. state and around the world for the most accurate pricing information. -- INVALUABLE TIPS. Sound advice on buying, selling, grading, and caring for your collectible records. -- FULLY ILLUSTRATED. Packed with photographs, including an eight-page color insert.
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