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http://dx.doi.org/10.3837/tiis.2014.11.005

A Dynamic QoS Model for improving the throughput of Wideband Spectrum Sharing in Cognitive Radio Networks  

Manivannan, K. (Department of Computer Science and Engineering, PSNA College of Engineering & Technology)
Ravichandran, C.G. (Principal, SCAD Institute of Technology)
Durai, B. Sakthi Karthi (Department of Information Technology, Latha Madhavan Engineering College)
Publication Information
KSII Transactions on Internet and Information Systems (TIIS) / v.8, no.11, 2014 , pp. 3731-3750 More about this Journal
Abstract
This paper considers a wideband cognitive radio network (WCRN) which can simultaneously sense multiple narrowband channels and thus aggregate the detected available channels for transmission and studies the ergodic throughput of the WCRN that operated under: the wideband sensing-based spectrum sharing (WSSS) scheme and the wideband opportunistic spectrum access (WOSA) scheme. In our analysis, besides the average interference power constraint at PU, the average transmit power constraint of SU is also considered for the two schemes and a novel cognitive radio sensing frame that allows data transmission and spectrum sensing at the same time is utilized, and then the maximization throughput problem is solved by developing a gradient projection method. Finally, numerical simulations are presented to verify the performance of the two proposed schemes.
Keywords
wideband sensing based spectrum sharing; wideband opportunistic spectrum access; cognitive radio networks; Quality of Service;
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