A weighted hard combination scheme for cooperative spectrum sensing in cognitive radio sensor networks

Citation

Mustapha, Ibrahim and Mohd Ali, Borhanuddin and A. Rasid, Mohd Fadlee and Sali, Aduwati and Mohamad, Hafizal (2015) A weighted hard combination scheme for cooperative spectrum sensing in cognitive radio sensor networks. In: 2015 IEEE 12th Malaysia International Conference on Communications (MICC 2015), 23-25 Nov. 2015, Kuching, Sarawak, Malaysia. (pp. 12-17).

Abstract

Multi-user spatial sensing diversity exploration through cooperation spectrum sensing greatly improves sensing performance. However, high communication overhead and energy costs for exchanging sensing results may limit its viability in a realistic large scale resource constraint network such as cognitive radio wireless sensor networks. This paper presents a Weighted Hard Combination (WHC) scheme that combines features of both quantized and hard combining schemes to minimize energy cost for reporting sensing result and improve primary user detection performance in cooperative sensing. We evaluate the effectiveness of the scheme through simulation. Performance comparison of the WHC scheme in terms of detection performance, reporting energy cost and reporting time ratio with conventional hard combination, soft combination and quantized schemes indicates viability of the scheme. The results indicate that the WHC scheme minimizes reporting energy cost by 70% and improves detection performance by 5.6% compared to the quantized 3-bits scheme.

Download File

Preview

PDF (Abstract)
A weighted hard combination scheme for cooperative spectrum sensing in cognitive radio sensor networks.pdf
Download (35kB) | Preview

Additional Metadata

Item Type:	Conference or Workshop Item (Paper)
Divisions:	Faculty of Engineering
DOI Number:	https://doi.org/10.1109/MICC.2015.7725399
Publisher:	IEEE
Keywords:	Cognitive radio sensor node; Cooperative spectrum sensing; Fusion centre; Probability of detection
Depositing User:	Nabilah Mustapa
Date Deposited:	16 Jan 2018 04:35
Last Modified:	16 Jan 2018 04:35
Altmetrics:	http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1109/MICC.2015.7725399
URI:	http://psasir.upm.edu.my/id/eprint/58411
Statistic Details:	View Download Statistic

Actions (login required)

View Item