Optimal Resource Allocation for Energy-Efficient OFDMA Networks

被引：0
|
作者：
Wu, Fan [1 ]
Mao, Yuming [1 ]
Huang, Xiaoyan [1 ]
Leng, Supeng [1 ]
机构：
[1] Univ Elect Sci & Technol China, Sch Commun & Informat Engn, Key Lab Opt Fiber Sensing & Commun, Chengdu 611731, Peoples R China
来源：
MATHEMATICAL PROBLEMS IN ENGINEERING | 2015年 / 2015卷
关键词：
DOWNLINK;
D O I：
10.1155/2015/594024
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
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页数：10
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