Digital Signal Processing and Artificial Intelligence for Automatic Learning Yakim Mihov and Boris Tsankov 2 3 2023 https://doi.org/10.6025/dspaial/2023/2/3/79-84 https://www.dline.info/dspai/fulltext/v2n3/dspaiv2n3_3.pdf To ensure better access to the VoIP service to all end-users, we need a better performance of cognitive radio networks for dynamic spectrum. In this paper, we presented a new cognitive network paradigm, where some licensed channels are available to unlicensed users by cognitive functionality. We have presented the extensive results and further highlighted the meaningful inferences.