An energy efficiency power allocation algorithm in cognitive radio networks

作者：Zhou Mingyue^*; Wang Hongzhi; Zhao Xiaohui; Chen Wanzhong

来源：Journal of Information and Computational Science, 2015, 12(2): 825-831.

DOI：10.12733/jics20105288

• Cognitive radio network
• Fractional programming
• Interference constraints
• Maximum through-put
• Power allocation algorithms
• Power allocations
• Resource allocation schemes
• Total transmit power

Traditional resource allocation schemes of OFDM-based cognitive radio systems mainly focus on maximum throughput. Since nowadays the energy efficiency power allocation becomes more and more important. This paper studies an energy efficiency power allocation algorithm in OFDM-based cognitive radio networks. The algorithm adapts both total transmit power and interference constraint to maximize the energy efficiency. It is a nonlinear constrained fractional programming problem, which can be solved by Lagrange dual theory. In simulation results, the performance of the proposed algorithm is investigated.

• 出版日期2015