Um Mecanismo Cooperativo Com Relays Cognitivos Híbridos Para Compartilhamento Espectral em Redes Heterogêneas

Cognitive Radio and In-band Full-Duplex technologies have proven to be promising for the development of heterogeneous communications systems. In this work, we explored cooperation between primary and secondary users (PU-SU) through hybrid cognitive relays (HD/FD), as a new approach to spectral sharing, characterizing system aggregated interference and solving the Leasing Time Problem. Our results show that, under low aggregated interference, FD mode is able to overcome HD mode to promote PU-SU cooperation in the primary uplink, meeting system requirements for fairly resource sharing.