| Description |
1 online resource |
| Summary |
"A blend of introductory material and advanced signal processing and communication techniques, of critical importance to underwater system and network developmentThis book, which is the first to describe the processing techniques central to underwater OFDM, is arranged into four distinct sections: First, it describes the characteristics of underwater acoustic channels, and stresses the difference from wireless radio channels. Then it goes over the basics of OFDM and channel coding. The second part starts with an overview of the OFDM receiver, and develops various modules for the receiver design in systems with single or multiple transmitters. This is the main body of the book. Extensive experimental data sets are used to verify the receiver performance. In the third part, the authors discuss applications of the OFDM receiver in i) deep water channels, which may contain very long separated multipath clusters, ii) interference-rich environments, where an unintentional interference such as Sonar will be present, and iii) a network with multiple users where both non-cooperative and cooperative underwater communications are developed. Lastly, it describes the development of a positioning system with OFDM waveforms, and the progress on the OFDM modem development. Closely related industries include the development and manufacturing of autonomous underwater vehicles (AUVs) and scientific sensory equipment. AUVs and sensors in the future could integrate modems, based on the OFDM technology described in this book. Contents includes: Underwater acoustic channel characteristics/OFDM basics/Peak-to-average-ratio control/Detection and Doppler estimation (Doppler scale and CFO)/Channel estimation and noise estimation/A block-by-block progressive receiver and performance results/Extensions to multi-input multi-output OFDM/Receiver designs for multiple users/Cooperative underwater OFDM (Physical layer network coding and dynamic coded cooperation)/Localization with OFDM waveforms/Modem developmentsA valuable resource for Graduate and postgraduate students on electrical engineering or physics courses; electrical engineers, underwater acousticians, communications engineers"-- Provided by publisher |
| Bibliography |
Includes bibliographical references and index. |
| Contents |
Cover; Title Page; Copyright; Contents; Preface; Acronyms; Notation; Chapter 1 Introduction; 1.1 Background and Context; 1.1.1 Early Exploration of Underwater Acoustics; 1.1.2 Underwater Communication Media; 1.1.3 Underwater Systems and Networks; 1.2 UWA Channel Characteristics; 1.2.1 Sound Velocity; 1.2.2 Propagation Loss; 1.2.3 Time-Varying Multipath; 1.2.4 Acoustic Propagation Models; 1.2.5 Ambient Noise and External Interference; 1.3 Passband Channel Input-Output Relationship; 1.3.1 Linear Time-Varying Channel with Path-Specific Doppler Scales. |
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1.3.2 Linear Time-Varying Channels with One Common Doppler Scale1.3.3 Linear Time-Invariant Channel; 1.3.4 Linear Time-Varying Channel with Both Amplitude and Delay Variations; 1.3.5 Linear Time-Varying Channel with Frequency-Dependent Attenuation; 1.4 Modulation Techniques for UWA Communications; 1.4.1 Frequency Hopped FSK; 1.4.2 Direct Sequence Spread Spectrum; 1.4.3 Single Carrier Modulation; 1.4.4 Sweep-Spread Carrier (S2C) Modulation; 1.4.5 Multicarrier Modulation; 1.4.6 Multi-Input Multi-Output Techniques; 1.4.7 Recent Developments on Underwater Acoustic Communications. |
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1.5 Organization of the BookChapter 2 OFDM Basics; 2.1 Zero-Padded OFDM; 2.1.1 Transmitted Signal; 2.1.2 Receiver Processing; 2.2 Cyclic-Prefixed OFDM; 2.2.1 Transmitted Signal; 2.2.2 Receiver Processing; 2.3 OFDM Related Issues; 2.3.1 ZP-OFDM versus CP-OFDM; 2.3.2 Peak-to-Average-Power Ratio; 2.3.3 Power Spectrum and Bandwidth; 2.3.4 Subcarrier Assignment; 2.3.5 Overall Data Rate; 2.3.6 Design Guidelines; 2.4 Implementation via Discrete Fourier Transform; 2.5 Challenges and Remedies for OFDM; 2.5.1 Benefits of Diversity Combining and Channel Coding; 2.6 MIMO OFDM; 2.7 Bibliographical Notes. |
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Chapter 3 Nonbinary LDPC Coded OFDM3.1 Channel Coding for OFDM; 3.1.1 Channel Coding; 3.1.2 Coded Modulation; 3.1.3 Coded OFDM; 3.2 Nonbinary LDPC Codes; 3.2.1 Nonbinary Regular Cycle Codes; 3.2.2 Nonbinary Irregular LDPC Codes; 3.3 Encoding; 3.4 Decoding; 3.4.1 Initialization; 3.4.2 Variable-to-Check-Node Update; 3.4.3 Check-to-Variable-Node Update; 3.4.4 Tentative Decision and Decoder Outputs; 3.5 Code Design; 3.5.1 Design of Regular Cycle codes; 3.5.2 Design of Irregular LDPC Codes; 3.5.3 Quasi-Cyclic Nonbinary LDPC codes; 3.6 Simulation Results of Coded OFDM; 3.7 Bibliographical Notes. |
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Chapter 4 PAPR Control4.1 PAPR Comparison; 4.2 PAPR Reduction; 4.2.1 Clipping; 4.2.2 Selective Mapping; 4.2.3 Peak Reduction Subcarriers; 4.3 Bibliographical Notes; Chapter 5 Receiver Overview and Preprocessing; 5.1 OFDM Receiver Overview; 5.2 Receiver Preprocessing; 5.2.1 Receiver Preprocessing; 5.2.2 Digital Implementation; 5.2.3 Frequency-Domain Oversampling; 5.3 Frequency-Domain Input-Output Relationship; 5.3.1 Single-Input Single-Output Channel; 5.3.2 Single-Input Multi-Output Channel; 5.3.3 Multi-Input Multi-Output Channel; 5.3.4 Channel Matrix Structure. |
| Subject |
Underwater acoustic telemetry.
|
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Orthogonal frequency division multiplexing.
|
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Télémétrie acoustique sous-marine. |
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Multiplexage par répartition orthogonale de la fréquence. |
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Orthogonal frequency division multiplexing |
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Underwater acoustic telemetry |
| Added Author |
Wang, Zhaohui (Electrical engineer)
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| Other Form: |
Print version: Zhou, Shengli. OFDM for underwater acoustic communications. Chichester, West Sussex, United Kingdom ; Hoboken, NJ : John Wiley & Sons Inc., 2014 9781118458860 (DLC) 2013051139 |
| ISBN |
9781118693810 (ePub) |
|
1118693817 (ePub) |
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9781118693858 (Adobe PDF) |
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111869385X (Adobe PDF) |
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9781118693865 (electronic bk.) |
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1118693868 (electronic bk.) |
|
1118458869 |
|
9781118458860 |
|
1306638062 |
|
9781306638067 |
|
(hardback) |
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