Outage Performance of Energy Harvesting Assisted Multi-Hop M2M Networks with Partial Relay Selection Methods

Abstract

his paper evaluates outage performance of wireless energy harvesting-assisted multi-hop mobile- to-mobile schemes. In our scheme, a mobile source sends its data to a mobile destination via a pre- established route, utilizing multiple intermediate mo- bile relays. The source and relay nodes harvest energy from a power beacon station deployed in the network, and they use this energy to transmit the data. To en- hance reliability of data transmission, cooperative com- munication is employed at each hop, with assistance of outer mobile nodes (they are not on the source-to- destination route). An incremental cooperation tech- nique is applied at each hop, i.e., cooperative commu- nication is only performed when the direct link is out- age. Moreover, two partial relay selection algorithms are also considered at each hop. This paper calculates end-to-end outage probability of the proposed schemes over double-Rayleigh fading channels. The obtained re- sults show that our schemes can achieve better outage performance, as compared with the conventional multi- hop relay scheme and a corresponding scheme that uses random relay selection at each hop.