Title
Overlay secondary spectrum sharing with independent re-attempts in cognitive radios
Abstract
Opportunistic spectrum access (OSA) is a promising reform paradigm envisioned to address the issue of spectrum scarcity in cognitive radio networks (CRNs). While current models consider various aspects of the OSA scheme, the impact of retrial phenomenon in multi-channel CRNs has not yet been analyzed. In this work, we present a continuous-time Markov chain (CTMC) model in which the blocked/preempted secondary users (SUs) enter a finite retrial group (or orbit) and re-attempt independently for service in an exponentially distributed random manner. Taking into account the inherent retrial tendency of SUs, we numerically assess the performance of the proposed scheme in terms of dropping probability and throughput of SUs.
Year
DOI
Venue
2016
10.1109/SARNOF.2016.7846750
2016 IEEE 37th Sarnoff Symposium
Keywords
DocType
Volume
dropping probability,snite retrial group,continuous-time Markov chain model,multichannel CRN,cognitive radio networks,opportunistic spectrum access,overlay secondary spectrum sharing
Conference
abs/1607.08450
ISBN
Citations 
PageRank 
978-1-5090-1541-2
0
0.34
References 
Authors
5
4
Name
Order
Citations
PageRank
Muthukrishnan Senthil Kumar184.23
Aresh Dadlani29813.04
K. C. Kim356785.37
Richard O. Afolabi4985.11