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

作者：Huang Gaoyong^*; Fang Xuming; Xiao Bo

来源：Journal of Theoretical and Applied Information Technology, 2012, 45(2): 627-633.

• Cellular network
• Cellular system
• Downlink transmissions
• Energy efficient
• Multi-hop relay networks
• OFDMA
• Path selection
• Resource allocation schemes
• Subchannel allocation
• Transmission power
• Two-hop relays
• Up-link transmissions

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.

• 出版日期2012
• 单位西南交通大学