Abstract
In this paper, we suggest to optimize both power allocation coefficients, harvesting and sensing durations for cognitive radio networks using non orthogonal multiple access (CR-NOMA). In the first slot, secondary transmitter harvests energy from radio frequency signal received from node
A
. In the second slot, secondary transmitter sense the channel to check if primary user is active or not. When primary user is idle, secondary transmitter transmits data to
N
NOMA users in the third slot. We derive and optimize the total throughput for Rayleigh channels.