Research Article
Energy/bandwidth-Saving Cooperative Spectrum Sensing for Two-hopWRAN
@ARTICLE{10.4108/cogcom.1.1.e5, author={Ming-Tuo Zhou and Chunyi Song and Chin Sean Sum and Hiroshi Harada}, title={Energy/bandwidth-Saving Cooperative Spectrum Sensing for Two-hopWRAN}, journal={EAI Endorsed Transactions on Cognitive Communications}, volume={1}, number={1}, publisher={ICST}, journal_a={COGCOM}, year={2014}, month={7}, keywords={TV White Space, Cognitive radio, IEEE 802.22, Wireless Regional Access Network, Cooperative Spectrum Sensing, Energy saving}, doi={10.4108/cogcom.1.1.e5} }- Ming-Tuo Zhou
Chunyi Song
Chin Sean Sum
Hiroshi Harada
Year: 2014
Energy/bandwidth-Saving Cooperative Spectrum Sensing for Two-hopWRAN
COGCOM
ICST
DOI: 10.4108/cogcom.1.1.e5
Abstract
A two-hop wireless regional area network (WRAN) providing monitoring services operating in Television White Space (TVWS), i.e., IEEE P802.22b, may employ a great number of subscriber customer-premises equipments (S-CPEs) possibly without mains power supply, leading to requirement of cost-effective and power-saving design. This paper proposes a framework of cooperative spectrum sensing (CSS) and an energy/bandwidth saving CSS scheme to P802.22b. In each round of sensing, S-CPEs with SNRs lower than a predefined threshold are excluded from reporting sensing results. Numerical results show that the fused missed-detection probability and false alarmprobability could remainmeeting sensing requirements, and the overall fused error probability changes very little. With 10 S-CPEs, it is possible to save more than 40% of the energy/bandwidth on a Rayleigh channel. The principle proposed can apply to other advanced sensing technologies capable of detecting primary signals with low average SNR.
Copyright © 2014 Ming-Tuo Zhou et al., licensed to ICST. This is an open access article distributed under the terms of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/),which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.
