Energy Efficiency and Spectral Efficiency Tradeoff in Downlink Distributed Antenna Systems

被引：94

作者：

He, Chunlong ^{[1
]}

Sheng, Bin ^{[1
]}

Zhu, Pengcheng ^{[1
]}

You, Xiaohu ^{[1
]}

机构：

[1] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2012年 / 1卷 / 03期

关键词：

Energy efficiency; distributed antenna systems; power allocation;

D O I：

10.1109/WCL.2012.022812.120048

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This letter investigates the tradeoff between energy efficiency (EE) and spectral efficiency (SE) in downlink multiuser distributed antenna systems (DAS). Given the SE requirement and maximum power limit, a constrained optimization problem is formulated to maximize EE. Because of the multi-dimensional and non-convex nature of the problem, we first transform the multicriteria optimization problem with high complexity into a simpler single objective optimization problem. Then a novel power allocation algorithm is proposed to achieve maximum EE. Simulation results demonstrate the effectiveness of the proposed scheme as well as illustrate the fundamental tradeoff between energy efficient and spectral efficient transmission in downlink multiuser DAS.

引用

页码：153 / 156

页数：4

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