Energy Efficiency of 5G Wireless Backhaul Networks.
The energy consumption of cellular networks should include the operating energy and the embodied energy [13]. In this article, the operating energy is defined as EOP = POP ◊ Tlifetime,where POP is the BS operating power and Tlifetime is the BS lifetime. Without loss of generality, the BS operating power is assumed as the linear function of the BS transmission power PTX, which is expressed as POP = a ◊ PTX + b, a > 0 and b > 0. In general, the transmission power depends on the radius of coverage and the signal propagation fading.