Spectrum sensing performance analysis based on primary user probability access/leave model

DOI

10.2991/amcce-15.2015.352How to use a DOI?

Keywords

cognitive radio; spectrum sensing; detection probability; probability accessing; probability leaving

Abstract

In cognitive radio system, secondary user’s self-sensing properties to the spectrum occupy is the start and basis of the whole cognitive process. The classical analysis of self-sensing properties has the hypothesis that the Primary user signal occupies the whole sensing slot. However, in the actual, primary user may access or leave anytime in the sensing slot. This paper does some discussion and analysis at this fact. Firstly, model according to behavior characteristics of primary user’s probability accessing and leaving. Secondly, derive the probability of primary user’s different length of sample points' appearance in sensing slot. Meanwhile, derive the function expression of secondary user’s average detection probability theoretically in the theoretical framework of energy detection. Finally, the results of numerical simulation verify the rationality of theoretical derivation. Compared with the classical method, the behavior of primary user’s probability accessing and leaving not only changes the trend of self-sensing properties but also makes detection probability of secondary user reduced by more than 50%.

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  - Song Chen
AU  - Shuainan Gu
AU  - Ke Li
AU  - Peng Dong
PY  - 2015/04
DA  - 2015/04
TI  - Spectrum sensing performance analysis based on primary user probability access/leave model
BT  - Proceedings of the 2015 International Conference on Automation, Mechanical Control and Computational Engineering
PB  - Atlantis Press
SN  - 1951-6851
UR  - https://doi.org/10.2991/amcce-15.2015.352
DO  - 10.2991/amcce-15.2015.352
ID  - Chen2015/04
ER  -