Optimized power allocation approach in relay-based cognitive radio network

In this paper, we address the issue of power allocation in a relay-based cognitive radio network. The power allocation approach analyzed here maximizes the system throughput while maintaining interference to a tolerable limit. We modify the approach to achieve a higher convergence rate. Later we further propose a near optimal power allocation approach that significantly lowers the computational complexity. A detailed analysis has been done before simulation. The simulated results validate the theoretical analysis.