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http://dx.doi.org/10.4218/etrij.16.2616.0007

Channel Selection for Spectrum Sharing in Wireless Networks  

Park, Jae Cheol (Broadcasting Media Research Laboratory, ETRI)
Kang, Kyu-Min (Broadcasting Media Research Laboratory, ETRI)
Park, Seungkeun (Broadcasting Media Research Laboratory, ETRI)
Publication Information
ETRI Journal / v.38, no.5, 2016 , pp. 952-961 More about this Journal
Abstract
In this paper, we study a spectrum sharing network (SSN) where a spectrum sharing device (SSD) coexists with multiple wireless communication systems (WCSs) in the same channel. The SSD can operate with either a duty cycle (DC) channel access mechanism or a listen-before-talk (LBT) channel access mechanism, whereas WCSs operate with an LBT mechanism. An opportunistic channel selection scheme for the SSD in the SSN is first proposed to minimize the outage probability. The optimal data transmission time for the DC-based SSD is derived to further improve the outage probability. We also derive the exact and closed-form outage probability of the proposed channel selection in the SSN by assuming that the number of WCSs operating in each channel is uniformly distributed. The simulation results show that the proposed channel selection scheme outperforms other channel selection schemes. It was also observed that a DC-based SSD with an optimal data transmission time provides a better outage performance than an LBT-based SSD. As the number of available channels increases, the channel selection scheme plays an important role in minimizing the outage probability of the SSNs.
Keywords
Channel selection; Duty cycle; Listen-before-talk; Outage probability; Spectrum sharing;
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Times Cited By KSCI : 3  (Citation Analysis)
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