Study of Sum-rate Optimization in Device-to-Device communication under different resource sharing modes

Abstract

The Device to Device communication acting as an underlay to the cellular networks is a promising technology which greatly improves the local services. This system thoroughly optimizes the system throughput over all the shared resources, without compromising the cellular service constraints which are prioritized. Under various resource sharing modes, the same resources which are shared between a D2D user and cellular user are optimized by power control and resource allocation. The optimality is subjected to various practical real constraints like maximum transmit power and energy constraint, spectral efficiency constraints. The significance of D2D underlay system is considered under a single cell and Manhattan grid environment which has many WINNER II office setup buildings. After simulation, the results indicate, that by effective and judicious management of resources, Device to Device communication can cater to the total throughput without attributing unnecessary interference to the cellular system.