Power and Time Slot Allocation in Cognitive Relay Networks Using Particle Swarm Optimization
Joint Authors
Derakhshan-Barjoei, Pouya
Dadashzadeh, Gholamreza
Razzazi, Farbod
Razavizadeh, S. Mohammad
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-08
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Medicine
Information Technology and Computer Science
Abstract EN
The two main problems in cognitive radio networks are power and time slot allocation problems which require a precise analysis and guarantee the quality of service in both the primary and secondary users.
In this paper, these two problems are considered and a method is proposed to solve the resulting optimization problem.
Our proposed method provides an improved performance in solving the constrained nonlinear multiobject optimization for the power control and beamforming in order to reach the maximum capacity and proper adaption of time slots, and as a result a new scheme for joint power and time slot allocation in cognitive relay networks is proposed.
We adopt space diversity access as the secondary users access scheme and divide the time between multiple secondary users according to their contribution to primary user’s transmission.
Helping primary users provides more opportunities for secondary users to access the channel since the primary users can release the channel sooner.
In contrast, primary network leases portion of channel access time to the secondary users for their transmission using particle swarm optimization (PSO).
Numerical studies show good performance of the proposed scheme with a dynamic cost function in a nonstationary environment.
American Psychological Association (APA)
Derakhshan-Barjoei, Pouya& Dadashzadeh, Gholamreza& Razzazi, Farbod& Razavizadeh, S. Mohammad. 2013. Power and Time Slot Allocation in Cognitive Relay Networks Using Particle Swarm Optimization. The Scientific World Journal،Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1012263
Modern Language Association (MLA)
Derakhshan-Barjoei, Pouya…[et al.]. Power and Time Slot Allocation in Cognitive Relay Networks Using Particle Swarm Optimization. The Scientific World Journal No. 2013 (2013), pp.1-9.
https://search.emarefa.net/detail/BIM-1012263
American Medical Association (AMA)
Derakhshan-Barjoei, Pouya& Dadashzadeh, Gholamreza& Razzazi, Farbod& Razavizadeh, S. Mohammad. Power and Time Slot Allocation in Cognitive Relay Networks Using Particle Swarm Optimization. The Scientific World Journal. 2013. Vol. 2013, no. 2013, pp.1-9.
https://search.emarefa.net/detail/BIM-1012263
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1012263