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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.
This newly revised and expanded edition of an Artech House classic builds on its success as far and away the most comprehensive guide to digital modulation techniques used in communications today. The second edition adds a wealth of up-to-date, critical material, including: Five new chapters devoted to orthogonal frequency division multiplexing (OFDM) covering its basics and practical implementation issues: peak-to-average power ratio (PAPR) reduction, synchronization, fading channel performance, and mitigation methods, as well as the newest developments such as wavelet OFDM schemes; New modulations for optical communications; Enhanced coverage of M-ary amplitude shift keying (ASK); More accurate bit error rate (BER) equations for quaternary phase shift keying (QPSK) and quadrature amplitude modulation (QAM); Enhanced coverage of fading channel mitigation methods such as channel estimate and diversity techniques; Fast-access comparison of all modulation schemes; New appendixes covering trigonometry identities, Fourier transform pairs and properties, and Q-function and error function values.
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From CHAPTER I. Modulation, in general. 1. To modulate, in the strict sense, is, in general, to pass by means of appropriate harmonies from one key to another. For the sake of terseness we will call the key just left the Old Key, the other one the New Key. By "appropriate harmonies" we mean in general such chords as form, in connection with a short harmonic formula called Cadence (see Chapter IX), a bond of union between the old Key and the new. The harmonies used in this work are exclusively major and minor Triads, as being the easiest chords to manage. 2. We may touch upon the domains of a foreign key without intending to leave the original key, - this would not be to modulate, in the strict sense. If, however, we not only pass over into the domains of a foreign key, but settle down in the key by means of its characteristic harmonies embodied in a Cadence, this plainly indicates the relinquishment of the original key, or, in other words, Digressive Modulation. Our means of modulation is, then, the Cadence, in conjunction with certain preceding Triads connecting it with the old key. 3. In our method we reach the new key in every case by means of one and the same simple Cadence-formula, which varies only according as it is to be used for the Major or the Minor Mode. The manner of proceeding is perfectly simple. The determination of the new key to which we are going, of course, also determines the Cadence as being in that key, and our task is to leave the old key by such of its harmonies as can be - as shortly as possible - properly connected (either immediately or mediately) with the Cadence itself. A homely illustration may serve to make this clear. We may imagine a railway-train, carrying with it an arrangement in the form of a movable switch, which can be laid down and stretched out as may be required, to enable the train to leave the main track and connect with auxiliary roads, each leading to a particular station, more or less remote. The Cadence may be likened to one of these auxiliary roads; for, as soon as we have safely made the connection (from the old key to the initial Triad of the Cadence) by means of the movable switch (the intermediate Triads, few or many), we leave the main track (the old key), and our task is as good as done, - the auxiliary road (the Cadence) will unerringly conduct us to the desired new station (the new key).
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.
The high level of technical detail included in standards specifications can make it difficult to find the correlation between the standard specifications and the theoretical results. This book aims to cover both of these elements to give accessible information and support to readers. It explains the current and future trends on communication theory and shows how these developments are implemented in contemporary wireless communication standards. Examining modulation, coding and multiple access techniques, the book is divided into two major sections to cover these functions. The two-stage approach first treats the basics of modulation and coding theory before highlighting how these concepts are defined and implemented in modern wireless communication systems. Part 1 is devoted to the presentation of main L1 procedures and methods including modulation, coding, channel equalization and multiple access techniques. In Part 2, the uses of these procedures and methods in the wide range of wireless communication standards including WLAN, WiMax, WCDMA, HSPA, LTE and cdma2000 are considered. An essential study of the implementation of modulation and coding techniques in modern standards of wireless communication Bridges the gap between the modulation coding theory and the wireless communications standards material Divided into two parts to systematically tackle the topic - the first part develops techniques which are then applied and tailored to real world systems in the second part Covers special aspects of coding theory and how these can be effectively applied to improve the performance of wireless communications systems
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