Joint Bandwidth-Power Allocation for Energy Efficient Transmission in Multi-user Systems

The pressure of the energy bill from operators and the request of the environmental protection from the governments and public results in more urgent requirement on the energy consumption and CO2 emission. Traditionally, the bandwidth and the transmit power are jointly considered to maximize the throughput of the wireless networks, while the energy efficiency of the wireless transmission is ignored. In this paper, we shall introduce a circuit-level power modeling to analyze the above effects and propose the joint bandwidth-power scheduling algorithms for energy efficiency in the wireless communication systems. We show that bandwidth and power shall be considered jointly for different channel statistic to maximize the energy efficiency. In addition, we characterize the bandwidth-power-energy efficiency relationship to obtain the design insights for future energy efficient communication networks.