Abstarct: Adding cognition to the network user equipment and RF energy harvesting technique are new methods to overcome the limitations in frequency bandwidth and power resources in wireless networks. In this thesis, at first we proposed a cooperative communication scheme for orthogonal frequency division multiple access energy harvested cognitive radio network and investigate resource allocation. In this case primary baxse station wants to transmit information to some distanced destination in the present of secondary users. The station lease its spectrum to secondary users to benefit the cooperation of theme. Secondary users harvest energy from primary network signals and consume the energy to relay the primary baxse station information to its destination. Meanwhile, they transmit their own information to the secondary baxse station using the remaining resources. We formulate the problem to an optimization one to meet the maximum rate in secondary network and solve it by dual Lagrange approach. Then we evaluate the effect of different network parameters such as total number of secondary users, primary rate and transmied power on secondary network rate. In the following, another system model is presented in order to control an energy harvested cooperative cognitive radio network outage probability. We provide reliable communication via retransmission baxsed on automatic repet request. Outage analysis for primary network as well as average transmission rate for secondary network are derived. Finally numerical results are presented and the comparison of the network performance in different modes are discussed.