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6778 results in Communications and signal processing

Page 56 of 339

Geometry of the Phase Retrieval Problem
  • Graveyard of Algorithms
  • Alexander H. Barnett, Charles L. Epstein, Leslie Greengard, Jeremy Magland
  • Published online:
    21 April 2022
    Print publication:
    05 May 2022
  • Recovering the phase of the Fourier transform is a ubiquitous problem in imaging applications from astronomy to nanoscale X-ray diffraction imaging. Despite the efforts of a multitude of scientists, from astronomers to mathematicians, there is, as yet, no satisfactory theoretical or algorithmic solution to this class of problems. Written for mathematicians, physicists and engineers working in image analysis and reconstruction, this book introduces a conceptual, geometric framework for the analysis of these problems, leading to a deeper understanding of the essential, algorithmically independent, difficulty of their solutions. Using this framework, the book studies standard algorithms and a range of theoretical issues in phase retrieval and provides several new algorithms and approaches to this problem with the potential to improve the reconstructed images. The book is lavishly illustrated with the results of numerous numerical experiments that motivate the theoretical development and place it in the context of practical applications.

Information Theoretic Perspectives on 5G Systems and Beyond
  • Edited by Ivana Marić, Shlomo Shamai (Shitz), Osvaldo Simeone
  • Published online:
    19 April 2022
    Print publication:
    05 May 2022
  • Experience a guided tour of the key information-theoretic principles that underpin the design of next-generation cellular systems with this invaluable reference. Written by experts in the field, the text encompasses principled theoretical guidelines for the design and performance analysis of network architectures, coding and modulation schemes, and communication protocols. Presenting an extensive overview of the most important ideas and topics necessary for the development of future wireless systems, as well as providing a detailed introduction to network information theory, this is the perfect tool for researchers and graduate students in the fields of information theory and wireless communications, as well as for practitioners in the telecommunications industry.

Page 56 of 339