Energy efficiency in cellular networks has received significant attention fromboth academia and industry because of the importance\r\nof reducing the operational expenditures and maintaining the profitability of cellular networks, in addition to making these\r\nnetworks ââ?¬Å?greener.ââ?¬Â Because the base station is the primary energy consumer in the network, efforts have been made to study base\r\nstation energy consumption and to find ways to improve energy efficiency. In this paper, we present a brief review of the techniques\r\nthat have been used recently to improve energy efficiency, such as energy-efficient power amplifier techniques, time-domain\r\ntechniques, cell switching, management of the physical layer through multiple-input multiple-output (MIMO) management,\r\nheterogeneous network architectures based on Micro-Pico-Femtocells, cell zooming, and relay techniques. In addition, this paper\r\ndiscusses the advantages and disadvantages of each technique to contribute to a better understanding of each of the techniques and\r\nthereby offer clear insights to researchers about how to choose the best ways to reduce energy consumption in future green radio\r\nnetworks.
Loading....