Energy- and Spectral-Efficiency Trade-Off in OFDMA-Based Cooperative Cognitive Radio Networks

Energy- and Spectral-Efficiency Trade-Off in OFDMA-Based Cooperative Cognitive Radio Networks

We study the trade-off between energy efficiency (EE) and spectral efficiency (SE) in cooperative cognitive radio networks (CCRN); joint power and subcarrier allocation scheme is proposed. Resource is assigned to each user in a way which ensures maximizing energy efficiency, maintaining primary and...

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Veröffentlicht in:International journal of distributed sensor networks 2014-01, Vol.10 (2), p.782648
Hauptverfasser: Chen, Xiaomao, Ouyang, Shan
Format: Artikel
Sprache:eng
Schlagworte:
Algorithms
Allocations
Analysis
Cognitive radio
Energy efficiency
Energy management
Energy use
Engineering research
Methods
Networks
Optimization
Resource allocation
Spectra
Spectrum allocation
Studies
Tradeoffs
Wireless communications
Wireless networks
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Zusammenfassung:We study the trade-off between energy efficiency (EE) and spectral efficiency (SE) in cooperative cognitive radio networks (CCRN); joint power and subcarrier allocation scheme is proposed. Resource is assigned to each user in a way which ensures maximizing energy efficiency, maintaining primary and second user quality of service (QoS) requirements. Optimum transmit power of user is got by analysis; validity of theory is verified by simulation, and the proposed algorithm can adaptively allocate resource for CCRN.
ISSN:1550-1329
1550-1477
1550-1477
DOI:10.1155/2014/782648