On the overflow probability and cross-layer secondary user selection in spectrum leasing of cognitive radio networks

Haqiqatnejad, Ali R.; Shahtalebi, Kamal

doi:10.1109/iraniancee.2015.7146255

Cited by 1 publication

(1 citation statement)

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“…Overall, because the fairness indexes slightly differ from each other, the disjoint SU selection may not significantly affect the fairness considerations for the secondary network. However, in order to tackle the problem, we have employed a cross‐layer approach to SU selection as part of our subsequent work .…”

Section: Numerical and Simulation Resultsmentioning

confidence: 99%

Efficient spectrum leasing in cognitive radio networks: Disjoint secondary user selection and protocol selective relaying

Haqiqatnejad

Shahtalebi

Forouzan

2016

Trans. Emerging Tel. Tech.

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In this paper, we propose an efficient spectrum leasing scheme for cognitive radio networks in which the leasing process is carried out by employing two generally non‐identical secondary users. The first secondary user is selected for cooperating with the primary network, and the second one is offered the released spectrum to perform the secondary transmission. The two mentioned secondary users are selected independently. Both the decode‐and‐forward and the amplify‐and‐forward relaying protocols are considered in this paper. Moreover, a protocol selective relaying scheme named decode‐ or amplify‐and‐forward (DAF), which smartly switches between the two protocols, is applied. We show that the disjoint secondary user selection and the protocol selective relaying result in an enhanced outage performance for both the primary and secondary networks as well as an increased achievable transmission rate for the secondary network. Numerical and simulation results are presented to evaluate the performance improvement of the proposed scheme. Using the simulation results, we also investigate the effect of disjoint secondary user selection on fairness considerations of the secondary network. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Numerical and Simulation Resultsmentioning

confidence: 99%