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A cluster‐based sequential cooperative spectrum sensing scheme utilizing reporting framework for cognitive radios
Author(s) -
VuVan Hiep,
Koo Insoo
Publication year - 2014
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.21968
Subject(s) - cognitive radio , overhead (engineering) , fusion center , scheme (mathematics) , computer science , control channel , computer network , channel (broadcasting) , process (computing) , power consumption , real time computing , electronic engineering , power (physics) , telecommunications , wireless , engineering , base station , mathematical analysis , physics , mathematics , quantum mechanics , operating system
The cognitive radio ( CR ) technology is being considered as a novel approach for improving the spectrum utilization by detecting and using the vacant spectrum bands of licensed users. Cooperative spectrum sensing ( CSS ) is the most promising method for offering more reliable sensing performance compared to individual sensing. However, in a large CR network, CSS requires a huge number of sensing result transmissions from cognitive radio users ( CU s) to the fusion center ( FC ), which can result in overhead traffic of the control channel and lack of power consumption of the CU s. In this paper, we propose a cluster‐based sequential cooperative spectrum sensing ( SCSS ) scheme utilizing a reporting framework to reduce the number of direct reports from CU s to FC while keeping similar sensing performance as the conventional CSS . By using the proposed scheme, the power consumption in the sensing process and the overhead of the control channel can be significantly reduced. Simulation proves the efficiency of the proposed scheme. © 2014 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.