Energy-Efficient Resource Allocation for Downlink OFDMA Systems

被引：0

作者：

Zheng, Zhengguang ^{[1
]}

Dan, Lilin ^{[1
]}

Gong, Saidang ^{[1
]}

Li, Shaoqian ^{[1
]}

机构：

[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 610054, Peoples R China

来源：

2013 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (IEEE ICC) | 2013年

基金：

美国国家科学基金会;

关键词：

Energy-efficiency; power allocation; subcarrier allocation; OFDMA;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a new energy efficient resource allocation is designed to maximize the system throughput per unit-energy over frequency selective channels in OFDMA downlink transmissions. Based on a fixed optimization model, the base station allocates transmit power to subcarriers using Water-Filling method and each user has its own water level. The optimal solution of power allocation with a given subcarrier assignment is derived according to the relationship between energy efficiency (EE) and water level. Furthermore, a suboptimal algorithm for subcarrier scheduling is presented which can achieve a better EE with desirable transmission rate. Simulation results show that the proposed scheme can get a better balance between spectral efficiency (SE) and EE compared to the existing schemes.

引用

页码：391 / 395

页数：5

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