Cognitive Spectrum Sharing Algorithm Based On Secondary Users Grouping

Aiming at the problem of spectrum sharing in cognitive radio systems, a spectrum sharing game algorithm model based on secondary users grouping is proposed. Group the secondary users according to certain characteristics such as the demand for spectrum resources and service types, and obtain the average spectrum efficiency factor of each group, thereby improving the secondary user benefit function. The secondary marginal cost of the primary user system is considered, through the dynamic game, the primary users can obtain satisfactory spectrum prices, and the spectrum competition among the secondary users is modeled as a dynamic Cournot game to ensure maximum efficiency of the secondary user. Through simulation analysis of static game, dynamic game and its stability, the results shown that the proposed algorithm can improve the rationality of spectrum allocation while ensuring system stability.