Author: Qiang ZhuPublisher:
ISBN:
Category :
Languages : en
Pages : 290
Book Description
Modulation Recognition Over Multipath-fading Channels
Author: Qiang ZhuCoded-Modulation Techniques for Fading Channels
Author: Seyed Hamidreza JamaliPublisher: Springer Science & Business Media
ISBN: 1461527287
Category : Technology & Engineering
Languages : en
Pages : 494
Book Description
Coded-Modulation Techniques for Fading Channels provides the reader with a sound background for the application of bandwidth-efficient coded-modulation techniques in fading channels. The book systematically presents recent developments in the field, which has grown rapidly in recent years, and provides a solid frame of reference for further research in this area. During the past decade there has been a proliferation of research in the area of bandwidth-efficient coded-modulation techniques. The primary advantage of these schemes over modulation schemes employing traditional error correcting codes is their ability to improve the performance of the communication system without bandwidth expansion. This property makes them a suitable choice for channels which are limited in both power and bandwidth. A typical example of such channels is a mobile satellite channel, where it is desired to accommodate a large number of users in a given bandwidth with a power which is constrained by the physical size of the satellite and by the vehicle's antenna. Coded-Modulation Techniques for Fading Channels is an excellent reference for researchers and practicing engineers, and may be used as a text for advanced courses on the subject.
Classification of Digital Modulation Types in Multipath Environments
Author: Andrew F. YoungPublisher:
ISBN:
Category : Classification
Languages : en
Pages : 65
Book Description
As the digital communications industry continues to grow and evolve, the applications of this discipline continue to grow as well. This growth, in turn, has spawned an increasing need to seek automated methods of classifying digital modulation types. This research is a revision of previous work, using the latest mathematical software including MATLAB version 7 and Simulink ®. The program considers the classification of nine different modulation types. Specifically, the classification scheme can differentiate between 2, 4, and 8 PSK, 256-QAM from other types of M-QAM signals, and also M-FSK signals from PSK and QAM signals in various types of propagation channels, including multipath fading and a variety of signal-to-noise levels. This method successfully identifies these modulation types without the benefit of a priori information. Higher-order statistical parameters are selected as class features and are tested in a classifier for their ability to identify the above modulation types. This study considers the effects due to realistic multipath propagation channels and additive white Gaussian noise. Using these features, and considering all fading conditions, it was determined that the classifier was correct for a randomly sent signal under randomly high or low SNR levels (low: 0dB to 8dB; high: 50dB to 100dB) over 83.9% of the time.
Digital Communication over Fading Channels
Author: Marvin K. SimonPublisher: John Wiley & Sons
ISBN: 0471715239
Category : Science
Languages : en
Pages : 936
Book Description
The four short years since Digital Communication over Fading Channels became an instant classic have seen a virtual explosion of significant new work on the subject, both by the authors and by numerous researchers around the world. Foremost among these is a great deal of progress in the area of transmit diversity and space-time coding and the associated multiple input-multiple output (MIMO) channel. This new edition gathers these and other results, previously scattered throughout numerous publications, into a single convenient and informative volume. Like its predecessor, this Second Edition discusses in detail coherent and noncoherent communication systems as well as a large variety of fading channel models typical of communication links found in the real world. Coverage includes single- and multichannel reception and, in the case of the latter, a large variety of diversity types. The moment generating function (MGF)-based approach for performance analysis, introduced by the authors in the first edition and referred to in literally hundreds of publications, still represents the backbone of the book's presentation. Important features of this new edition include: * An all-new, comprehensive chapter on transmit diversity, space-time coding, and the MIMO channel, focusing on performance evaluation * Coverage of new and improved diversity schemes * Performance analyses of previously known schemes in new and different fading scenarios * A new chapter on the outage probability of cellular mobile radio systems * A new chapter on the capacity of fading channels * And much more Digital Communication over Fading Channels, Second Edition is an indispensable resource for graduate students, researchers investigating these systems, and practicing engineers responsible for evaluating their performance.
Automatic Modulation Recognition of Communication Signals
Author: Elsayed AzzouzPublisher: Springer Science & Business Media
ISBN: 1475724691
Category : Science
Languages : en
Pages : 233
Book Description
Automatic modulation recognition is a rapidly evolving area of signal analysis. In recent years, interest from the academic and military research institutes has focused around the research and development of modulation recognition algorithms. Any communication intelligence (COMINT) system comprises three main blocks: receiver front-end, modulation recogniser and output stage. Considerable work has been done in the area of receiver front-ends. The work at the output stage is concerned with information extraction, recording and exploitation and begins with signal demodulation, that requires accurate knowledge about the signal modulation type. There are, however, two main reasons for knowing the current modulation type of a signal; to preserve the signal information content and to decide upon the suitable counter action, such as jamming. Automatic Modulation Recognition of Communications Signals describes in depth this modulation recognition process. Drawing on several years of research, the authors provide a critical review of automatic modulation recognition. This includes techniques for recognising digitally modulated signals. The book also gives comprehensive treatment of using artificial neural networks for recognising modulation types. Automatic Modulation Recognition of Communications Signals is the first comprehensive book on automatic modulation recognition. It is essential reading for researchers and practising engineers in the field. It is also a valuable text for an advanced course on the subject.
An Investigation on the Effect of Multipath Fading on Digital Modulation Signals Using Time Frequency Signal Analysis
Author: Ahmad Zuri Sha'ameriPublisher:
ISBN: 9781864352023
Category : Signal processing
Languages : en
Pages :
Book Description
On Optimum and Suboptimum Coherent Detection of Continuous Phase Modulation Transmitted Over a Simple Two-ray Multipath Fading Channel
Author: Arne SvenssonSimulation of Different Modulation Techniques in COFDM System in a Multipath Fading Channel
Author: Osama S. MohammedAdvances in Signal Processing, Embedded Systems and IoT
Author: V.V.S.S.S. ChakravarthyPublisher: Springer Nature
ISBN: 981198865X
Category : Technology & Engineering
Languages : en
Pages : 692
Book Description
The book discusses the latest developments and outlines future trends in the fields of microelectronics, electromagnetics and telecommunication. It contains original research works presented at the International Conference on Microelectronics, Electromagnetics and Telecommunication (ICMEET 2022), held in Bheemavaram, West Godavari (Dist), Andhra Pradesh, India during 22 – 23 July 2022. The papers were written by scientists, research scholars and practitioners from leading universities, engineering colleges and R&D institutes from all over the world, and share the latest breakthroughs in and promising solutions to the most important issues facing today’s society.
Symmetry Measures on Complex Networks
Author: Angel GarridoPublisher: MDPI
ISBN: 3038424986
Category : Mathematics
Languages : en
Pages : 509
Book Description
This book is a printed edition of the Special Issue "Symmetry Measures on Complex Networks" that was published in Symmetry