Flexible Resource Allocation for Joint Optimization of Energy and Spectral Efficiency in OFDMA Multi-Cell Networks

被引：18
作者：
Jing, Wenpeng [1 ]
Lu, Zhaoming [1 ]
Wen, Xiangming [1 ]
Hu, Zhiqun [1 ]
Yang, Shaoshi [2 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, Beijing 10086, Peoples R China
[2] Univ Southampton, Sch Elect & Comp Sci, Southampton SO17 1BJ, Hants, England
来源：
IEEE COMMUNICATIONS LETTERS | 2015年 / 19卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Energy efficiency; joint optimization; OFDMA multi-cell; resource allocation; spectral efficiency; WIRELESS NETWORKS; TRADEOFF; SYSTEMS;
D O I：
10.1109/LCOMM.2015.2392113
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
The radio resource allocation problem is studied, aiming to jointly optimize the energy efficiency (EE) and spectral efficiency (SE) of downlink OFDMA multi-cell networks. Different from existing works on either EE or SE optimization, a novel EE-SE tradeoff (EST) metric, which can capture both the EST relation and the individual cells' preferences for EE or SE performance, is introduced as the utility function for each base station (BS). Then the joint EE-SE optimization problem is formulated, and an iterative subchannel allocation and power allocation algorithm is proposed. Numerical results show that the proposed algorithm can exploit the EST relation flexibly and optimize the EE and SE simultaneously to meet diverse EE and SE preferences of individual cells.
引用
收藏
页码：451 / 454
页数：4
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