A Cooperative Spectrum Sensing Scheme with an Adaptive Energy Threshold in Cognitive Radios | Zendy

Hiep-Vu Van | Zendy; Insoo Koo | Zendy

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A Cooperative Spectrum Sensing Scheme with an Adaptive Energy Threshold in Cognitive Radios

Author(s) -

Hiep-Vu Van,

Insoo Koo

Publication year - 2011

Publication title -

journal of information and communication convergence engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.28

H-Index - 6

eISSN - 2234-8883

pISSN - 2234-8255

DOI - 10.6109/jicce.2011.9.4.391

Subject(s) - cognitive radio , scheme (mathematics) , computer science , spectrum (functional analysis) , energy (signal processing) , telecommunications , computer network , electronic engineering , wireless , physics , mathematics , statistics , engineering , mathematical analysis , quantum mechanics

Cognitive radio (CR) technique is a useful tool for improving spectrum utilization by detecting and using the vacant frequency bands while avoiding interference to the primary user. The sensing performance in a CR network can be improved by allowing some CR users to perform cooperative spectrum sensing. In this paper, we propose a new sensing algorithm that utilizes an adaptive energy threshold for cooperative spectrum sensing in which a changeable energy threshold is adopted by the CR users for improving local sensing performance. Through the proposed scheme, the reliability of global decision can be enhanced mainly due to the improvement in local sensing performance.

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