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Relay Selection and Subcarrier-Pair Based Energy-Efficient Resource Allocation for Multirelay Cooperative OFDMA Networks
Joint Authors
Yang, Shouyi
Hao, Wanming
Hao, Wanliang
Source
International Journal of Antennas and Propagation
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-10
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
Energy-efficient resource allocation is investigated for a relay-based multiuser cooperation orthogonal frequency division multiple access (OFDMA) uplink system with amplify-and-forward (AF) protocol for all relays.
The objective is to maximize the total energy efficiency (EE) of the uplink system with consideration of some practical limitations, such as the individual power constraint for the users and relays and the quality of service (QoS) for every user.
We formulate an energy-efficient resource allocation problem that seeks joint optimization of subcarrier pairing, relay selection, subcarrier assignment, and power allocation.
Unlike previous optimization throughput models, we transform the considered EE problem in fractional form into an equivalent optimal problem in subtractive form, which is solved by using dual decomposition and subgradient methods.
To reduce computation costs, we propose two low-complexity suboptimal schemes.
Numerical studies are conducted to evaluate the EE of the proposed algorithms.
American Psychological Association (APA)
Hao, Wanming& Yang, Shouyi& Hao, Wanliang. 2014. Relay Selection and Subcarrier-Pair Based Energy-Efficient Resource Allocation for Multirelay Cooperative OFDMA Networks. International Journal of Antennas and Propagation،Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-1036084
Modern Language Association (MLA)
Hao, Wanming…[et al.]. Relay Selection and Subcarrier-Pair Based Energy-Efficient Resource Allocation for Multirelay Cooperative OFDMA Networks. International Journal of Antennas and Propagation No. 2014 (2014), pp.1-13.
https://search.emarefa.net/detail/BIM-1036084
American Medical Association (AMA)
Hao, Wanming& Yang, Shouyi& Hao, Wanliang. Relay Selection and Subcarrier-Pair Based Energy-Efficient Resource Allocation for Multirelay Cooperative OFDMA Networks. International Journal of Antennas and Propagation. 2014. Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-1036084
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1036084