Underwater Acoustic Communications And Adaptive Signal Processing
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Novel Adaptive Signal Processing Techniques For Underwater Acoustic Communications
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Author : Teyan Chen
language : en
Publisher:
Release Date : 2011
Novel Adaptive Signal Processing Techniques For Underwater Acoustic Communications written by Teyan Chen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
Underwater Acoustic Communications And Adaptive Signal Processing
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Author : Mohammadhossein Behgam
language : en
Publisher:
Release Date : 2019
Underwater Acoustic Communications And Adaptive Signal Processing written by Mohammadhossein Behgam and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
"This dissertation proposes three new algorithms for underwater acoustic wireless communications. One is a new tail-biting circular MAP decoder for full tail-biting convolution (FTBC) codes for very short data blocks intended for Internet of Underwater Things (IoUT). The proposed algorithm was evaluated by ocean experiments and computer simulations on both Physical (PHY) and Media access control (MAC) layers. The ocean experimental results show that without channel equalization, the full tail-biting convolution (FTBC) codes with short packet lengths not only can perform similarly to zero-tailing convolution (ZTC) codes in terms of bit error rate (BER) in the PHY layer. Computer simulation results show that the FTBC codes outperform the ZTC codes in terms of MAC layer metrics, such as collision rate and bandwidth utilization, in a massive network of battery powered IoUT devices. Second, this dissertation also proposes a new approach to utilizing the underwater acoustic (UWA) wireless communication signals acquired in a real-world experiment as a tool for evaluating new coding and modulation schemes in realistic doubly spread UWA channels. This new approach, called passband data reuse, provides detailed procedures for testing the signals under test (SUT) that change or add error correction coding, change bit to symbol mapping (baseband modulation) schemes from a set of original experimental data"--Abstract, page iv.
Underwater Acoustic Digital Signal Processing And Communication Systems
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Author : Robert Istepanian
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-09
Underwater Acoustic Digital Signal Processing And Communication Systems written by Robert Istepanian and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-09 with Technology & Engineering categories.
Underwater acoustic digital signal processing and communications is an area of applied research that has witnessed major advances over the past decade. Rapid developments in this area were made possible by the use of powerful digital signal processors (DSPs) whose speed, computational power and portability allowed efficient implementation of complex signal processing algorithms and experimental demonstration of their performance in a variety of underwater environments. The early results served as a motivation for the development of new and improved signal processing methods for underwater applications, which today range from classical of autonomous underwater vehicles and sonar signal processing, to remote control underwater wireless communications. This book presents the diverse areas of underwater acoustic signal processing and communication systems through a collection of contributions from prominent researchers in these areas. Their results, both new and those published over the past few years, have been assembled to provide what we hope is a comprehensive overview of the recent developments in the field. The book is intended for a general audience of researchers, engineers and students working in the areas of underwater acoustic signal processing. It requires the reader to have a basic understanding of the digital signal processing concepts. Each topic is treated from a theoretical perspective, followed by practical implementation details. We hope that the book can serve both as a study text and an academic reference.
Channel Adaptive Receiver Test Bed Software Controlled Hardware For Studying Underwater Acoustic Communication Receivers Uses An Adaptive Filter And Can Emulate Other Adaptive Systems
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Author : M. D. Juniper
language : en
Publisher:
Release Date : 1978
Channel Adaptive Receiver Test Bed Software Controlled Hardware For Studying Underwater Acoustic Communication Receivers Uses An Adaptive Filter And Can Emulate Other Adaptive Systems written by M. D. Juniper and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.
This document describes a software-controlled experimental test-bed designed primarily to implement a receiver for underwater acoustic communications. It is also useful in evaluating the feasibility of incorporating adaptive filtering in various other signal processing systems. A least-mean-square filter provides the major source of processing; a minicomputer and peripheral devices are used for the transfer, storage, input, and output of data. Concurrent Pascal is used to implement a flexible user-specified real-time operating system. (Author).
Underwater Acoustics
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Author : Salah Bourennane
language : en
Publisher: BoD – Books on Demand
Release Date : 2012-03-28
Underwater Acoustics written by Salah Bourennane and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-03-28 with Technology & Engineering categories.
The field of acoustic engineering has many various potential applications, such as in ocean science research and homeland security. This book provides cutting-edge knowledge in current techniques and technologies, such as the adaptive technique for underwater communication, array processing and the CI/OFDM system. One chapter takes inspiration from the natural world in proposing a new bio-inspired ranging approach for resolution purposes. Technologies such as high-resolution array processing methods can also be used to locate underwater objects in sediment, as one chapter shows. Finally, two contributions cover the applications of narrowband interference suppression and iterative equalization, and decoding schemes. Given the scope of the book, it will be required reading for researchers and engineers in the field.
Digital Underwater Acoustic Communications
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Author : Lufen Xu
language : en
Publisher: Academic Press
Release Date : 2016-09-16
Digital Underwater Acoustic Communications written by Lufen Xu and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-16 with Technology & Engineering categories.
Digital Underwater Acoustic Communications focuses on describing the differences between underwater acoustic communication channels and radio channels, discusses loss of transmitted sound in underwater acoustic channels, describes digital underwater acoustic communication signal processing, and provides a comprehensive reference to digital underwater acoustic communication equipment. This book is designed to serve as a reference for postgraduate students and practicing engineers involved in the design and analysis of underwater acoustic communications systems as well as for engineers involved in underwater acoustic engineering. Introduces the basics of underwater acoustics, along with the advanced functionalities needed to achieve reliable communications in underwater environment Identifies challenges in underwater acoustic channels relative to radio channels, underwater acoustic propagation, and solutions Shows how multi-path structures can be thought of as time diversity signals Presents a new, robust signal processing system, and an advanced FH-SS system for multimedia underwater acoustic communications with moderate communication ranges (above 20km) and rates (above 600bps) Describes the APNFM system for underwater acoustic communication equipment (including both civil and military applications), to be employed in active sonar to improve its performance
Underwater Acoustic Signal Processing
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Author : Douglas A. Abraham
language : en
Publisher: Springer
Release Date : 2019-02-14
Underwater Acoustic Signal Processing written by Douglas A. Abraham and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-02-14 with Technology & Engineering categories.
This book provides comprehensive coverage of the detection and processing of signals in underwater acoustics. Background material on active and passive sonar systems, underwater acoustics, and statistical signal processing makes the book a self-contained and valuable resource for graduate students, researchers, and active practitioners alike. Signal detection topics span a range of common signal types including signals of known form such as active sonar or communications signals; signals of unknown form, including passive sonar and narrowband signals; and transient signals such as marine mammal vocalizations. This text, along with its companion volume on beamforming, provides a thorough treatment of underwater acoustic signal processing that speaks to its author’s broad experience in the field.
High Resolution Spatial Processing In Underwater Acoustics
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Author : Ronald A. Wagstaff
language : en
Publisher:
Release Date : 1985
High Resolution Spatial Processing In Underwater Acoustics written by Ronald A. Wagstaff and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Beamforming categories.
Aspects Of Signal Processing
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Author : G. Tacconi
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Aspects Of Signal Processing written by G. Tacconi and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
The summer school held in Portovenere followed a tutorial format with the purpose of familiarizing postdoctoral or postgraduate students in the basic theories and up-to-date applications of present knowledge. Although, from a teaching point of view, a certain areount of overlapping is always useful, in order to avoid excessive duplication direct contact between lecturers expert in the same subject was encouraged during the preparation phase. In recent years computer facilities and theoretical implementa tion have considerably increased the possibility of solving problems relating to signal detection in noise. Any type of communication may take advantage of signal processing principles, including any type of physical measurement that can be considered as a non-semantic and/or quasi-semantic communication. Since signal processing techniques are common to many branches of science (telecommunications, radar, sonar, seismology, geophysics, nuclear research, space research and others), the advanced and sophisticated levels reached singularly in anyone of them could be used to the advantage of the others. In particular, underwater acoustics is a discipline which, to some extent, represents a practical general model that has permitted the development of signal processing techniques suitable to meet data reduction and interpretation needs of other branches of science. This ASI consequently underlined the inter-disciplinarity of signal proces sing in order that the principles of outstanding methods developed in one field may be adapted to others.
Adaptive Reception For Underwater Communications
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Author : Spyridon Dessalermos
language : en
Publisher:
Release Date : 2011
Adaptive Reception For Underwater Communications written by Spyridon Dessalermos and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Algorithms categories.
This research concerns the development of an adaptive receiver for underwater communication. In this type of wireless link, the radio channel is replaced by an underwater acoustic channel, which is strongly dependent on the physical properties of the ocean medium and its boundaries, the link geometry and the ambient noise. Traditional acoustic communications have involved a priori matching of the signaling parameters to the expected characteristics of the channel. To achieve more robust communications, as well as high quality of service, it is necessary to develop a type of adaptive receiver for the acoustic link. This process involves estimating the channel scattering function by processing the received Direct Sequence Spread Spectrum (DSSS) acoustic signal. This information is used by an innovative receiver introduced for usage in the underwater environment. The research also involves the development of a robust acquisition system for the acoustic communication signal. The major design goal is the receiver's robustness on a Doppler distorted fast varying multipath fading channel, for applications in multiuser environments. Another important design goal is low complexity in signal processing. The proposed receiver is able to adapt in the acoustic channel variations. Experimental results prove the effectiveness of the receiver.