Device-to-device (D2D) communication underlaying cellular wireless networks is a
promising concept to improve user experience and resource utilization by allowing direct
transmission between two cellular devices. In this paper, performance of network-assisted
D2D communication is investigated where D2D traffic is carried through relay nodes.
Considering a multi-user and multi-relay network, we propose a distributed solution for
resource allocation with a view to maximizing network sum-rate. An optimization problem is …

Wireless device-to-device (D2D) communication underlaying cellular network is a promising
concept to improve user experience and resource utilization. Unlike traditional D2D
communication, where two mobile devices in the proximity establish a direct local link
bypassing the base station, in this work, we focus on relay-aided D2D communication. Relay-
aided transmission could enhance the performance of D2D communication when D2D user
equipments (UEs) are far apart from each other and/or the quality of D2D link is not good …