A Novel Approach to Improve the Frequency Resolution Based on Sparse Representation

DOI

10.2991/iccia.2012.137How to use a DOI?

Keywords

Fast Fourier Transform,Matching Pursuit, sparse represantion, frequency resolution, MPTK,

Abstract

How to improve the frequency resolution, especially in the low frequency bands, is an important problem for many applications. A novel approach based on sparse representation was proposed for this problem. In this work, we first discussed the design of the over-completed dictionary with the high frequency resolution, and then Matching Pursuit was advised to perform sparse decomposition using Matching Pursuit Tool Kit. Next, the frequency information was extracted from the code book of the results of Matching Pursuit. Finally, the experiments demonstrated the improvement of the frequency resolution for the proposed approach.

Copyright

© 2013, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Wenming Gui
AU  - Ruifan Liu
AU  - Guangyi Bai
AU  - Xi Shao
PY  - 2014/05
DA  - 2014/05
TI  - A Novel Approach to Improve the Frequency Resolution Based on Sparse Representation
BT  - Proceedings of the 2012 2nd International Conference on Computer and Information Application (ICCIA 2012)
PB  - Atlantis Press
SP  - 566
EP  - 569
SN  - 1951-6851
UR  - https://doi.org/10.2991/iccia.2012.137
DO  - 10.2991/iccia.2012.137
ID  - Gui2014/05
ER  -