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IEICE TRANSACTIONS on Fundamentals

Sparse-Graph Codes and Peeling Decoder for Compressed Sensing

Weijun ZENG, Huali WANG, Xiaofu WU, Hui TIAN

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Summary :

In this paper, we propose a compressed sensing scheme using sparse-graph codes and peeling decoder (SGPD). By using a mix method for construction of sensing matrices proposed by Pawar and Ramchandran, it generates local sensing matrices and implements sensing and signal recovery in an adaptive manner. Then, we show how to optimize the construction of local sensing matrices using the theory of sparse-graph codes. Like the existing compressed sensing schemes based on sparse-graph codes with “good” degree profile, SGPD requires only O(k) measurements to recover a k-sparse signal of dimension n in the noiseless setting. In the presence of noise, SGPD performs better than the existing compressed sensing schemes based on sparse-graph codes, still with a similar implementation cost. Furthermore, the average variable node degree for sensing matrices is empirically minimized for SGPD among various existing CS schemes, which can reduce the sensing computational complexity.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E99-A No.9 pp.1712-1716
Publication Date
2016/09/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E99.A.1712
Type of Manuscript
LETTER
Category
Digital Signal Processing

Authors

Weijun ZENG
  PLA University of Science and Technology
Huali WANG
  PLA University of Science and Technology
Xiaofu WU
  Nanjing University of Posts and Telecommunications
Hui TIAN
  PLA University of Science and Technology

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