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

Xiaomao Chen | Zendy; Shan Ouyang | Zendy

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

Author(s) -

Xiaomao Chen,

Shan Ouyang

Publication year - 2014

Publication title -

international journal of distributed sensor networks

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.324

H-Index - 53

eISSN - 1550-1477

pISSN - 1550-1329

DOI - 10.1155/2014/782648

Subject(s) - computer science , subcarrier , efficient energy use , spectral efficiency , quality of service , cognitive radio , resource allocation , computer network , transmitter power output , energy (signal processing) , orthogonal frequency division multiple access , resource (disambiguation) , wireless , telecommunications , orthogonal frequency division multiplexing , transmitter , channel (broadcasting) , statistics , mathematics , electrical engineering , engineering

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.

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