A novel multiple relay selection technique for rf energy harvested relay networks

Abstract

The utilization of Radio Frequency (RF) for Energy Harvesting (EH) in wireless communication networks has become popular in recent time. RF can be used for powering the network nodes which has limited energy, as well as to perform data transmission. Signal transmission is very much affected by the channel fading. Cooperative communication could be used to reduce the effects of channel fading. In cooperative communication, relaying technique is used to transmit the data from source to destination in smaller hops. This improves the transmission reliability and the radio coverage of the wireless network. The performance of a relay-assisted cooperative network greatly depends on the selection strategies of a set of best performing relays or a best relay, whichever applicable, from a given set of relays. However, only one selected relay based on optimized performance may not provide the best performance constantly in the network. Keeping this point in mind, a dual-hop relay-assisted network with energy harvesting capability is taken into consideration in this thesis. The best relays are chosen to serve the high-quality communication in a set transmission block time. In order to address afore mentioned problem, a new relay selection algorithm to select best four relays, has been discussed in this thesis work. The proposed model has been simulated using MATLAB R2015a platform. The throughput performances of this new algorithm have been analyzed. A comparative study of the proposed algorithm and the existing algorithms has also been presented.