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A User's Guide to Compressed Sensing for Communications Systems
Kazunori HAYASHI Masaaki NAGAHARA Toshiyuki TANAKA
Publication
IEICE TRANSACTIONS on Communications
Vol.E96B
No.3
pp.685712 Publication Date: 2013/03/01
Online ISSN: 17451345
DOI: 10.1587/transcom.E96.B.685
Print ISSN: 09168516 Type of Manuscript: INVITED SURVEY PAPER Category: Keyword: compressed sensing, sparse signal, compressible signal, _{1}norm, underdetermined system,
Full Text: FreePDF(1MB)
Summary:
This survey provides a brief introduction to compressed sensing as well as several major algorithms to solve it and its various applications to communications systems. We firstly review linear simultaneous equations as illposed inverse problems, since the idea of compressed sensing could be best understood in the context of the linear equations. Then, we consider the problem of compressed sensing as an underdetermined linear system with a prior information that the true solution is sparse, and explain the sparse signal recovery based on _{1} optimization, which plays the central role in compressed sensing, with some intuitive explanations on the optimization problem. Moreover, we introduce some important properties of the sensing matrix in order to establish the guarantee of the exact recovery of sparse signals from the underdetermined system. After summarizing several major algorithms to obtain a sparse solution focusing on the _{1} optimization and the greedy approaches, we introduce applications of compressed sensing to communications systems, such as wireless channel estimation, wireless sensor network, network tomography, cognitive radio, array signal processing, multiple access scheme, and networked control.

