Screen LibraryOFDM for underwater acoustic communications /
"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 sectio...
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| Main Authors: | |
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| Group Author: | |
| Published: |
Wiley,
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| Publisher Address: | Chichester, West Sussex, United Kingdom : |
| Publication Dates: | 2014. |
| Literature type: | eBook |
| Language: | English |
| Subjects: | |
| Online Access: |
http://onlinelibrary.wiley.com/book/10.1002/9781118693865 |
| 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 des |
| Carrier Form: | 1 online resource. |
| Bibliography: | Includes bibliographical references and index. |
| ISBN: |
9781118693810 (ePub) 1118693817 (ePub) 9781118693858 (Adobe PDF) 111869385X (Adobe PDF) 9781118693865 (electronic bk.) 1118693868 (electronic bk.) 1118458869 9781118458860 |
| Index Number: | TK5103 |
| CLC: | U666.7 |
| 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. 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. 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. 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. 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. |