An Efficient Weight-Based Cooperative Spectrum Sensing Scheme in Cognitive Radio Systems

Thuc KIEU-XUAN  Insoo KOO  

IEICE TRANSACTIONS on Communications   Vol.E93-B   No.8   pp.2191-2194
Publication Date: 2010/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E93.B.2191
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technologies
cognitive radio,  cooperative spectrum sensing,  decision fusion,  

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Cooperation is an attractive approach to improving the spectrum sensing performance of cognitive systems experiencing deep shadowing and fading. In this letter, an efficient weight-based cooperative spectrum sensing scheme is proposed. Simulation results show that the proposed scheme has better accuracy than "AND," "OR," and "half-voting" combination schemes and has similar spectrum sensing accuracy but with lower computational and communication complexity in comparison to the "optimal data fusion" rule.