Outage Performance of Relay-assisted Parasitic Backscatter Communication Networks
The existing parasitic backscatter communications rely on the direct links between transceivers and do not work when the direct links are blocked or fade deeply.To solve this problem,a relay-assisted parasitic backscatter communication network is proposed,base on which its outage performance is analyzed.Specifically,according to the proposed network,the instantaneous signal-to-noise ratios to decode the primary and secondary systems are given,and then the outage probabilities of primary and secondary systems on the basis of the energy-causality constraint of the secondary user are defined.Under the Rayleigh channel fading model,the expressions for the outage probability of the primary and secondary systems can be obtained by exploiting mathematical theory.Computer simulations validate the accuracy of the derived primary and secondary system outage probabilities,on which the impacts of different system parameters are analyzed.
Backscatter communicationsEnergy harvestingRelayOutage probability