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Energy harvesting (EH) based on ambient radio frequency (RF) has recently become advanced method to prolong the lifetime of the wireless networks. This paper deals with energy harvesting architecture of the full duplex relaying networks. By applying time switching based relaying (TSR) protocol and Amplify-and-Forward (AF) scheme, we derive the closed-form expression of the outage probability and hence compute the optimal throughput. An important result can be seen clearly that the time fraction in TSR impacts on the optimal throughput. Finally, numerical results show an efficient relaying strategy in full duplex cooperative networks.