Author : Saleh Faruque
Publisher : Springer
Page : 110 pages
File Size : 19,85 MB
Release : 2016-07-27
Category : Technology & Engineering
ISBN : 3319412027
This book introduces Radio Frequency Modulation to a broad audience. The author blends theory and practice to bring readers up-to-date in key concepts, underlying principles and practical applications of wireless communications. The presentation is designed to be easily accessible, minimizing mathematics and maximizing visuals.
Author : Gary L. Frost
Publisher : JHU Press
Page : 207 pages
File Size : 10,9 MB
Release : 2010-04-01
Category : Technology & Engineering
ISBN : 0801899133
The commonly accepted history of FM radio is one of the twentieth century’s iconic sagas of invention, heroism, and tragedy. Edwin Howard Armstrong created a system of wideband frequency-modulation radio in 1933. The Radio Corporation of America (RCA), convinced that Armstrong’s system threatened its AM empire, failed to develop the new technology and refused to pay Armstrong royalties. Armstrong sued the company at great personal cost. He died despondent, exhausted, and broke. But this account, according to Gary L. Frost, ignores the contributions of scores of other individuals who were involved in the decades-long struggle to realize the potential of FM radio. The first scholar to fully examine recently uncovered evidence from the Armstrong v. RCA lawsuit, Frost offers a thorough revision of the FM story. Frost’s balanced, contextualized approach provides a much-needed corrective to previous accounts. Navigating deftly through the details of a complicated story, he examines the motivations and interactions of the three communities most intimately involved in the development of the technology—Progressive-era amateur radio operators, RCA and Westinghouse engineers, and early FM broadcasters. In the process, Frost demonstrates the tension between competition and collaboration that goes hand in hand with the emergence and refinement of new technologies. Frost's study reconsiders both the social construction of FM radio and the process of technological evolution. Historians of technology, communication, and media will welcome this important reexamination of the canonic story of early FM radio.
Author : Jon B. Hagen
Publisher : Cambridge University Press
Page : 453 pages
File Size : 40,11 MB
Release : 2009-06-11
Category : Technology & Engineering
ISBN : 052188974X
Covering the fundamentals applying to all radio devices, this is a perfect introduction to the subject for students and professionals.
Author : Julius O. Smith
Publisher : Julius Smith
Page : 323 pages
File Size : 40,2 MB
Release : 2008
Category : Fourier transformations
ISBN : 097456074X
"The DFT can be understood as a numerical approximation to the Fourier transform. However, the DFT has its own exact Fourier theory, and that is the focus of this book. The DFT is normally encountered as the Fast Fourier Transform (FFT)--a high-speed algorithm for computing the DFT. The FFT is used extensively in a wide range of digital signal processing applications, including spectrum analysis, high-speed convolution (linear filtering), filter banks, signal detection and estimation, system identification, audio compression (such as MPEG-II AAC), spectral modeling sound synthesis, and many others. In this book, certain topics in digital audio signal processing are introduced as example applications of the DFT"--Back cover
Author : Jacques Fagot
Publisher : Elsevier
Page : 525 pages
File Size : 22,82 MB
Release : 2014-07-03
Category : Technology & Engineering
ISBN : 1483278530
Electronics and Instrumentation, Volume 11: Frequency Modulation Theory: Application to Microwave Links provides information pertinent to the fundamental aspects of microwave beam techniques. This book discusses the development in the application of frequency modulation. Organized into five chapters, this volume begins with an overview of the transfer of the radio-frequency energy over a given path. This text then examines all the general problems of frequency modulation, including principle, band covered, distortion, and improvement of the signal-to-noise ratio. Other chapters deal with propagation distortion that is apparent in a variable-velocity guided transmission channel. This book discusses as well the complete problem of telephony and television transmission over radio links and considers the requisite conditions for meeting the international standards. The final chapter deals with all the applied techniques concerned with radio link equipment that deals with a large number of general problems. This book is a valuable resource for students and engineers.
Author : Christopher E. Tibbs
Publisher :
Page : 460 pages
File Size : 29,36 MB
Release : 1956
Category : Frequency modulation
ISBN :
Modulation, Demodulation, Amplitude (Schwingungstechnik).
Author : Alexander M. Wyglinski
Publisher : Artech House
Page : 375 pages
File Size : 40,9 MB
Release : 2018-04-30
Category : Technology & Engineering
ISBN : 1630814598
Based on the popular Artech House classic, Digital Communication Systems Engineering with Software-Defined Radio, this book provides a practical approach to quickly learning the software-defined radio (SDR) concepts needed for work in the field. This up-to-date volume guides readers on how to quickly prototype wireless designs using SDR for real-world testing and experimentation. This book explores advanced wireless communication techniques such as OFDM, LTE, WLA, and hardware targeting. Readers will gain an understanding of the core concepts behind wireless hardware, such as the radio frequency front-end, analog-to-digital and digital-to-analog converters, as well as various processing technologies. Moreover, this volume includes chapters on timing estimation, matched filtering, frame synchronization message decoding, and source coding. The orthogonal frequency division multiplexing is explained and details about HDL code generation and deployment are provided. The book concludes with coverage of the WLAN toolbox with OFDM beacon reception and the LTE toolbox with downlink reception. Multiple case studies are provided throughout the book. Both MATLAB and Simulink source code are included to assist readers with their projects in the field.
Author : Xinping Huang
Publisher : Artech House
Page : 231 pages
File Size : 29,79 MB
Release : 2014-09-01
Category : Technology & Engineering
ISBN : 1608075729
A wireless communication system employs a radio frequency (RF) wave to transmit information bearing signals. In modern digital communication systems, sophisticated modulation techniques are developed to modulate information onto an RF carrier waveform, so as to transmit more information. This new book presents signal processing techniques for reducing impairments of analog and RF circuits in wireless communications systems. Engineers, researchers, and students will find full coverage of the topic, including vector modulators, power amplifiers, vector demodulators, group delay distortion in analog/RF filters, digital beamforming networks, and dual polarization systems. Several applications are discussed, including both single carrier and multi-carrier scenarios.
Author : Christopher H. Sterling
Publisher : Univ of North Carolina Press
Page : 336 pages
File Size : 41,19 MB
Release : 2009-09-15
Category : Social Science
ISBN : 0807877557
When it first appeared in the 1930s, FM radio was a technological marvel, providing better sound and nearly eliminating the static that plagued AM stations. It took another forty years, however, for FM's popularity to surpass that of AM. In Sounds of Change, Christopher Sterling and Michael Keith detail the history of FM, from its inception to its dominance (for now, at least) of the airwaves. Initially, FM's identity as a separate service was stifled, since most FM outlets were AM-owned and simply simulcast AM programming and advertising. A wartime hiatus followed by the rise of television precipitated the failure of hundreds of FM stations. As Sterling and Keith explain, the 1960s brought FCC regulations allowing stereo transmission and requiring FM programs to differ from those broadcast on co-owned AM stations. Forced nonduplication led some FM stations to branch out into experimental programming, which attracted the counterculture movement, minority groups, and noncommercial public and college radio. By 1979, mainstream commercial FM was finally reaching larger audiences than AM. The story of FM since 1980, the authors say, is the story of radio, especially in its many musical formats. But trouble looms. Sterling and Keith conclude by looking ahead to the age of digital radio--which includes satellite and internet stations as well as terrestrial stations--suggesting that FM's decline will be partly a result of self-inflicted wounds--bland programming, excessive advertising, and little variety.
Author : Raed Mesleh
Publisher : John Wiley & Sons
Page : 284 pages
File Size : 11,53 MB
Release : 2018-06-19
Category : Technology & Engineering
ISBN : 1119375657
Explores the fundamentals required to understand, analyze, and implement space modulation techniques (SMTs) in coherent and non-coherent radio frequency environments This book focuses on the concept of space modulation techniques (SMTs), and covers those emerging high data rate wireless communication techniques. The book discusses the advantages and disadvantages of SMTs along with their performance. A general framework for analyzing the performance of SMTs is provided and used to detail their performance over several generalized fading channels. The book also addresses the transmitter design of these techniques with the optimum number of hardware components and the use of these techniques in cooperative and mm-Wave communications. Beginning with an introduction to the subject and a brief history, Space Modulation Techniques goes on to offer chapters covering MIMO systems like spatial multiplexing and space-time coding. It then looks at channel models, such as Rayleigh, Rician, Nakagami-m, and other generalized distributions. A discussion of SMTs includes techniques like space shift keying (SSK), space-time shift keying (STSK), trellis coded spatial modulation (TCSM), spatial modulation (SM), generalized spatial modulation (GSM), quadrature spatial modulation (QSM), and more. The book also presents a non-coherent design for different SMTs, and a framework for SMTs’ performance analysis in different channel conditions and in the presence of channel imperfections, all that along with an information theoretic treatment of SMTs. Lastly, it provides performance comparisons, results, and MATLAB codes and offers readers practical implementation designs for SMTs. The book also: Provides readers with the expertise of the inventors of space modulation techniques (SMTs) Analyzes error performance, capacity performance, and system complexity. Discusses practical implementation of SMTs and studies SMTs with cooperative and mm-Wave communications Explores and compares MIMO schemes Space Modulation Techniques is an ideal book for professional and academic readers that are active in the field of SMT MIMO systems.
