Volume 15, Issue 1 (2015)
MJEE 2015, 15(1): 1-8 |
Back to browse issues page
Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:
Vatanpour S, Jvan M R. A Cooperative Spectrum Leasing Scheme with Guaranteed Secrecy Rate for Primary Link. MJEE 2015; 15 (1) :1-8
URL: http://mjee.modares.ac.ir/article-17-3740-en.html
URL: http://mjee.modares.ac.ir/article-17-3740-en.html
1- M.Sc. student, Department of Electrical Engineering, Shahrood University of Technology, Iran.
2- Assistant Professor, Department of Electrical Engineering, Shahrood University of Technology, Iran
2- Assistant Professor, Department of Electrical Engineering, Shahrood University of Technology, Iran
Abstract: (5547 Views)
In this paper, we consider a cooperative cognitive radio network in which there is an OFDM primary link and multiple single carrier secondary links.The primary link is required to maintain its secrecy rate above a predefined threshold. If the secrecy rate requirement is not satisfied, the secondary system help primary link to maintain its secrecy rate requirement. In doing so, the secondary transmitters work as decode and forward (DF) relays and hence, as a reward, gains access to network resources to transmit its own information. Our objective is to maximize the data rate of secondary system while satisfying the primary secrecy rate constraint and individual transmit power constraints for primary link and secondary system. We solve our proposed optimization problem using dual Lagrange approach to find the set of cooperating secondary link, subcarrier assignments, and transmit power over each subcarrier. Using simulations, we evaluate our proposed scheme in various situations.
Keywords: Secure communications, cognitive radio network, Cooperative communications, OFDM, resource allocation, dual approach
Received: 2016/07/13 | Accepted: 2016/11/21 | Published: 2038/01/19
| Rights and permissions | |
 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. |