Optimizing cooperative cognitive radio networks with opportunistic access

Zafar, A; Alouini, MS; Chen, Y; Radaydeh, RM

Optimizing cooperative cognitive radio networks with opportunistic access

Zafar, A

Alouini, MS Chen, Y Radaydeh, RM

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Publication Type:: Journal Article
Citation:: Journal of Computer Networks and Communications, 2012
Issue Date:: 2012-06-12

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Field	Value	Language
dc.contributor.author	Zafar, A https://orcid.org/0000-0001-8382-7625	en_US
dc.contributor.author	Alouini, MS	en_US
dc.contributor.author	Chen, Y	en_US
dc.contributor.author	Radaydeh, RM	en_US
dc.date.issued	2012-06-12	en_US
dc.identifier.citation	Journal of Computer Networks and Communications, 2012	en_US
dc.identifier.issn	2090-7141	en_US
dc.identifier.uri	http://hdl.handle.net/10453/114041
dc.description.abstract	Optimal resource allocation for cooperative cognitive radio networks with opportunistic access to the licensed spectrum is studied. Resource allocation is based on minimizing the symbol error rate at the receiver. Both the cases of all-participate relaying and selective relaying are considered. The objective function is derived and the constraints are detailed for both scenarios. It is then shown that the objective functions and the constraints are nonlinear and nonconvex functions of the parameters of interest, that is, source and relay powers, symbol time, and sensing time. Therefore, it is difficult to obtain closed-form solutions for the optimal resource allocation. The optimization problem is then solved using numerical techniques. Numerical results show that the all-participate system provides better performance than its selection counterpart, at the cost of greater resources. © 2012 Ammar Zafar et al.	en_US
dc.relation.ispartof	Journal of Computer Networks and Communications	en_US
dc.relation.isbasedon	10.1155/2012/294581	en_US
dc.title	Optimizing cooperative cognitive radio networks with opportunistic access	en_US
dc.type	Journal Article
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CRIN - Realtime Information Networks
utslib.copyright.status	open_access
pubs.publication-status	Published	en_US

Abstract:

Optimal resource allocation for cooperative cognitive radio networks with opportunistic access to the licensed spectrum is studied. Resource allocation is based on minimizing the symbol error rate at the receiver. Both the cases of all-participate relaying and selective relaying are considered. The objective function is derived and the constraints are detailed for both scenarios. It is then shown that the objective functions and the constraints are nonlinear and nonconvex functions of the parameters of interest, that is, source and relay powers, symbol time, and sensing time. Therefore, it is difficult to obtain closed-form solutions for the optimal resource allocation. The optimization problem is then solved using numerical techniques. Numerical results show that the all-participate system provides better performance than its selection counterpart, at the cost of greater resources. © 2012 Ammar Zafar et al.

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http://hdl.handle.net/10453/114041