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Treats joint source and channel decoding in an integrated way Gives a clear description of the problems in the field together with the mathematical tools for their solution C… Read more
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Traditionally, cross-layer and joint source-channel coding were seen as incompatible with classically structured networks but recent advances in theory changed this situation. Joint source-channel decoding is now seen as a viable alternative to separate decoding of source and channel codes, if the protocol layers are taken into account. A joint source/protocol/channel approach is thus addressed in this book: all levels of the protocol stack are considered, showing how the information in each layer influences the others.
This book provides the tools to show how cross-layer and joint source-channel coding and decoding are now compatible with present-day mobile and wireless networks, with a particular application to the key area of video transmission to mobiles. Typical applications are broadcasting, or point-to-point delivery of multimedia contents, which are very timely in the context of the current development of mobile services such as audio (MPEG4 AAC) or video (H263, H264) transmission using recent wireless transmission standards (DVH-H, DVB-SH, WiMAX, LTE).
This cross-disciplinary book is ideal for graduate students, researchers, and more generally professionals working either in signal processing for communications or in networking applications, interested in reliable multimedia transmission. This book is also of interest to people involved in cross-layer optimization of mobile networks. Its content may provide them with other points of view on their optimization problem, enlarging the set of tools which they could use.
Pierre Duhamel is director of research at CNRS/ LSS and has previously held research positions at Thomson-CSF, CNET, and ENST, where he was head of the Signal and Image Processing Department. He has served as chairman of the DSP committee and associate Editor of the IEEE Transactions on Signal Processing and Signal Processing Letters, as well as acting as a co-chair at MMSP and ICASSP conferences. He was awarded the Grand Prix France Telecom by the French Science Academy in 2000. He is co-author of more than 80 papers in international journals, 250 conference proceedings, and 28 patents.
Michel Kieffer
is an assistant professor in signal processing for communications at the Université Paris-Sud and a researcher at the Laboratoire des Signaux et Systèmes, Gif-sur-Yvette, France. His research interests are in joint source-channel coding and decoding techniques for the reliable transmission of multimedia contents. He serves as associate editor of Signal Processing (Elsevier). He is co-author of more than 90 contributions to journals, conference proceedings, and book chapters.1. Introduction: Context1.1 MultimediaWireless: The Need for NewTools1.2 Example Applications1.3 Joint Source-Channel Coding and Decoding1.4 Outline
2. Why Joint Source and Channel Decoding?2.1 Information Theoretic Preliminaries2.2 To Separate or Not To Separate?2.3 To Code or Not To Code?2.4 Back to the Separation Paradigm2.5 Conclusion
3. Source-Coding Primer3.1 Components of Source Coders3.2 Entropy Coding3.3 Quantization3.4 Differential Coding3.5 Transform Coding3.6 Wavelet-Based Coding3.7 Packetization of Compressed Data3.8 Conclusion
4. Identifying Residual Redundancy4.1 Stochastic Redundancy4.2 Deterministic Redundancy4.3 Comparing Various Sources of Redundancy4.4 Conclusion
5. Exploiting the Residual Redundancy5.1 Estimators5.2 Element-by-Element MAP Estimation Algorithms5.3 Sequence Estimation Algorithms5.4 Example: Decoding MPEG-4 AAC Scale Factors5.5 Possible Extensions
6. Toward Practical Implementations6.1 State Aggregation6.2 Projected Trellises6.3 Grouping CodeWords6.4 Sequential Decoders6.5 Conclusion
7. Protocol Layers7.1 General Architecture7.2 Identifying the Redundancy7.3 General Properties7.4 Conclusion
8. Joint Protocol-Channel Decoding8.1 Permeable Layer Mechanism8.2 MAP Estimator for Robust Header Recovery8.3 Robust Burst Segmentation8.4 Computing APPs of Inputs of Block Codes8.5 Discussion
9. Joint Cross-Layer Decoding9.1 Network and PHY Layers May Jointly Help the Application Layer9.2 Iterative Decoding9.3 Discussion
10. Introduction to Joint Source-Channel Coding10.1 Traditional View of JSCC10.2 Design of Robust Entropy Codes10.3 Overcomplete Representations10.4 Conclusion
11. Open Challenges11.1 Joint Source-Channel Decoding11.2 Joint Source-Channel Coding11.3 Joint Source-Channel Coding/Decoding
A. Format of 802.11 PacketsA.1 PHY Packets FormatA.2 Format of the MAC Packets Associated to the DCF ProtocolA.3 Format of IP PacketsA.4 The Transport Layer (UDP/RTP)
Bibliography