A Joint Optimal Algorithm of Spectrum Sensing Time and Sensing Period in Cognitive Radio Systems
Wang Jiong-ta · Journal of Ningbo University · 2013
The traditional spectrum sensing time and sensing period optimal algorithms ignore the appearance of the primary user,which leads to low sensing performance and spectrum using rate.To tackle this problem,we propose a joint optimal algorithm of spectrum sensing time and sensing period based on the probability of the primary user.It first uses the total system loss probability as constraint condition,then optimizes the sensing time followed by optimizing the sensing period at different appearance probability of the primary user so as to maximize the spectrum use rate.The proposed algorithm gives full play to the system in using the best spectrum sensing time and sensing period during different appearance probabilities of the primary user.As a result,the sensing performance and spectrum using rate efficiently can be improved.