Resource allocation for green communication in relay-based cellular networks

Abstract

The energy efficiency of wireless communication systems and their impact on the environment have been largely ignored in the past during the design and implementation of existing wireless networks. Increasing energy-consumption in these networks has been recently identified as a global problem due to its adverse effects on the environment and increasing cost of operation [1]–[5]. Cellular systems constitute a major part of wireless communications and their use in daily life is increasing more than ever [6]. Mobile devices are expected to surpass personal computers as the main web-accessing devices in the near future [7]. Therefore, mobile communications can contribute up to 15-20% of the overall energy-consumption in information and communication technologies (ICT) [7], which can no longer be disregarded.