Institute of Electrical & Electronic Engineers
Radio Frequency (RF) energy harvesting is a promising technique to sustain operations of wireless networks. In a cognitive radio network, a secondary user can be equipped with RF energy harvesting capability. In this paper, the authors consider such a network where the secondary user can perform channel access to transmit a packet or to harvest RF energy when the selected channel is idle or occupied by the primary user, respectively. They present an optimization formulation to obtain the channel access policy for the secondary user to maximize its throughput.