A novel energy harvesting scheme for mixed fso-rf relaying systems

In this correspondence paper, we consider the performance of a mixed free-space optical and radio frequency (FSO-RF) relaying system with energy harvesting in the existence of both atmospheric turbulence and pointing errors. More specially, we assume that the direct current component of the FSOsignal, which is generally filtered out, can be used for energy harvesting at the relay. We derive the exact closed-form expression for the outage probability of this setup in terms of the bivariate Fox-H function.We also provide the asymptotic analysis to obtain the diversity order. Finally, Monte Carlo simulations are carried out to verify the correctness of our analytical results.National Natural Science Foundation of China;Guangzhou Science and Technology Program key projects;Natural Science Foundation of Hunan Province; Department of Education of Guangdong Province; Fundamental Research Funds for the Central UniversitiesScopu