Power Allocation Based on Convex Optimization for Cognitive Radio Networks
Guangming Liu · Video Engineering · 2009
In order to satisfy the interference constraint from secondary user to primary user and maximize secondary user' s transmission rate,the optimal power allocation scheme based on convex optimization theory is proposed.Considering the complexity of optimal scheme,a suboptimal scheme with low complexity is also proposed.The simulation results show that the performance of suboptimal scheme is close to the optimal one under the tolerable interference power constraint of primary user.