New adaptive dynamic channel allocation algorithm in cognitive Radio
Fangwei Li · Journal of Computer Applications · 2011
According to the characteristics of primary users' service,this paper applied mixed Poisson distribution to primary users' service modeling,evaluating the probability density of non-occupied duration of channel by using Expectation-Maximization(EM) algorithm to estimate the parameters of mixed Poisson distribution model and putting forward a multi-channel allocation algorithm based on channel estimation.The simulation results indicate that the proposed algorithm has excellent performance on conflict rate and throughput.Meanwhile,the proposed algorithm has lower implementation complexity for practical use.