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Optimal Resource Allocation for Energy-Efficient OFDMA Networks

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  • Fan Wu
  • Yuming Mao
  • Xiaoyan Huang
  • Supeng Leng

Abstract

This paper focuses on radio resource allocation in OFDMA networks for maximizing the energy efficiency subject to the data rate requirements of users. We propose the energy-efficient water-filling structure to obtain the closed-form optimal energy-efficient power allocation for a given subcarrier assignment. Moreover, we establish a new sufficient condition for the optimal energy-efficient subcarrier assignment. Based on the theoretical analysis, we develop a joint energy-efficient resource allocation (JERA) algorithm to maximize the energy efficiency. Simulation results show that the JERA algorithm can yield optimal solution with significantly low computational complexity.

Suggested Citation

  • Fan Wu & Yuming Mao & Xiaoyan Huang & Supeng Leng, 2015. "Optimal Resource Allocation for Energy-Efficient OFDMA Networks," Mathematical Problems in Engineering, Hindawi, vol. 2015, pages 1-10, April.
    • Handle: RePEc:hin:jnlmpe:594024
    DOI: 10.1155/2015/594024
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