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An energy-efficient maximization based path selection and resource allocation scheme in OFDMA-based two-hop relay cellular networks.

Author(s)
Gaoyong Huang School of Information Science & Technology, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; Department of Computer and Communication Engineering, Emei Campus, Southwest Jiaotong University, Emei 614202, Chengdu, China
Xuming Fang School of Information Science & Technology, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; Department of Computer and Communication Engineering, Emei Campus, Southwest Jiaotong University, Emei 614202, Chengdu, China
Bo Xiao Department of Computer and Communication Engineering, Emei Campus, Southwest Jiaotong University, Emei 614202, Chengdu, China
Abstract
In this paper, we investigate the energy efficiency problem in downlink transmission of the OFDMA-based two-hop relay cellular networks. Most of the researches on energy efficiency focus on the transmission in traditional cellular system, especially for the uplink transmission. Our objective is to maximize the system energy efficiency for the downlink transmission of the two-hop relay cellular system. We consider both the circuit power and transmission power consumption, and propose a two-step suboptimal path selection and subchannel allocation scheme to maximize the system energy efficiency. The simulation results show that our proposed scheme have good performance in energy efficiency.
Publication Details
Page(s) 627-633
DOI DOI not available
Published Journal: Journal of Theoretical and Applied Information Technology, Volume: 45, Issue: 2, Year: 2012

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