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Energy Efficient Communications with Device-to-Device Links in Cellular Networks

Authors:
Radwa Ahmed Osman
Xiao-Hong Peng
Zuoyin Tang

Keywords: Energy efficiency; cooperative communications; D2D communications.

Abstract:
Device-to-Device (D2D) communications in cellular networks allow devices to communicate directly without going through the base station. The D2D underlaying cellular networks method is aimed to increase network energy efficiency, as specified for Long-Term Evolution Advanced (LTE-A) and 5G systems. In this paper, we examine the performance of both cooperative and non-cooperative communications modes based on the energy models we establish, within a mobile network where both user equipment (UE) to base station and D2D transmission links co-exist. We show that the source-destination distance is an important factor to decide whether to use the cooperative or non-cooperative transmission scheme in order to achieve better energy efficiency. We have also investigated the effects of choosing different numbers of relaying branches and relays in each branch on the performance of the network. This investigation leads to identifying optimal transmission schemes for maximizing energy efficiency under varying environmental conditions.

Pages: 127 to 132

Copyright: Copyright (c) IARIA, 2016

Publication date: November 13, 2016

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-514-2

Location: Barcelona, Spain

Dates: from November 13, 2016 to November 17, 2016