Energy-Efficient Power Allocation for Uplink SC-FDMA

Author

Zhengguang Zheng ; Qiuyue Ji ; Lilin Dan ; Shaoqian Li

Author_Institution

Nat. Key Lab. of Sci. & Technol. on Commun., Univ. of Electron. Sci. & Technol. of China, Chengdu, China

fYear

2012

fDate

21-23 Sept. 2012

Firstpage

1

Lastpage

4

Abstract

Energy-efficiency (EE) of wireless communication is becoming one of the key performance evaluation criteria for battery-driven system. In this paper, an optimization problem to maximize the instantaneous bits-per-Joule metric with given spectral-efficiency (SE) requirement and maximum power constraint is formulated for uplink SC-FDMA system over frequency-selective channels. Based on this optimization model, a novel low-complexity energy-efficient optimal power allocation (PA) algorithm for each user is proposed to achieve maximum EE. Numerical results demonstrate that the proposed scheme has a better tradeoff between SE and EE than conventional power allocation schemes.

Keywords

channel allocation; energy conservation; frequency division multiple access; frequency selective surfaces; optimisation; spectral analysis; EE; SC-FDMA; SE; battery driven system; bits-per-Joule metric; energy efficient power allocation; frequency selective channel; optimization; spectral efficiency; wireless communication; Frequency division multiaccess; OFDM; Optimization; Resource management; Throughput; Uplink; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing (WiCOM), 2012 8th International Conference on

Conference_Location

Shanghai

ISSN

2161-9646

Print_ISBN

978-1-61284-684-2

Type

conf

DOI

10.1109/WiCOM.2012.6478514

Filename

6478514