An Effective Wideband Spectrum Sensing Method for a Single CR

DOI

10.2991/iiicec-15.2015.143How to use a DOI?

Keywords

cognitive radio; spectrum sensing; temporal smoothing; linear programming

Abstract

This paper presents a wideband spectrum sensing algorithm for a cognitive radio (CR) user equipped with a single receiving antenna. Firstly, the proposed method utilizes the temporal smoothing technique to form a virtual multi-antenna structure. Secondly, the wideband spectrum sensing problem is reformulated as a sparse reconstruction problem by exploiting a sparse representation of the virtual multi-antenna array covariance vector. Finally, the sparse reconstruction problem is modeled as a linear programming (LP) problem and hence can be solved efficiently. The presented method offers a number of advantages over other recently proposed methods. For examples, the unknown noise variances can be eliminated effectively by a linear transformation. It is computationally simpler since it is efficiently formulated in terms of the LP problem, etc. Simulation results are presented to verify the efficiency of the proposed method.

Copyright

© 2015, 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  - Ruiyan Du
AU  - Fulai Liu
AU  - Zixuan Zhang
AU  - Jinkuan Wang
PY  - 2015/03
DA  - 2015/03
TI  - An Effective Wideband Spectrum Sensing Method for a Single CR
BT  - Proceedings of the 2015 International Industrial Informatics and Computer Engineering Conference
PB  - Atlantis Press
SP  - 628
EP  - 632
SN  - 2352-538X
UR  - https://doi.org/10.2991/iiicec-15.2015.143
DO  - 10.2991/iiicec-15.2015.143
ID  - Du2015/03
ER  -