Faculty of Electronics Technology Industrial University of Ho Chi Minh City Ho Chi Minh City Vietnam;
Faculty of Electronics Technology Industrial University of Ho Chi Minh City Ho Chi Minh City Vietnam;
Wireless Communcations Research Group Faculy of Electrical and Electronics Engineering Ton Duc Thang University Ho Chi Minh City Vietnam;
Energy harvesting; Two-way relay; Energy efficiency; Hardware impairments; Cognitive network;