Dynamic power allocation in the cognitive radio system
Wang Jing-jing · 2016
The precoding based on signal-to-leakage-and-noise ratio (SLNR) improves the system performance because it makes a balance between eliminating the co-channel interference (CCI) and the noise in cognitive radio system. The channel quality effects the performance of the system because the channel state of every cognitive user is different. This paper uses a dynamic power allocation which can get a better performance. It will multiply a coefficient of power allocation after the precoding. Simulation results prove that the performance will improve after using the dynamic power allocation.