Abstract: With the evolution of communication technology, a corresponding requirement for optimization in energy consumption is also growing. With the emergence of 5G technology the importance of energy efficiency (EE) for wireless networks has been realized even more. The major concern is to improve EE without compromising on user experience. So in this paper, we address various energy issues and provide an analysis of various techniques which will be adopted in the 5G networks to improve the energy efficiency of the devices. We have focused our attention on the following areas to improve the energy efficiency which include EE improvement using radio access techniques like Simultaneous wireless energy and power transfer, EE improvement by use of Small Cells and Massive MIMO, EE improvement by using relays and D2D communication.
Keywords: Energy Efficiency, 5G, D2D, Small cells, Massive MIMO, SWIPT.