Browsing by Author "Nafie, Mohamed"
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On the coexistence of a primary user with an energy harvesting secondary user: A case of cognitive cooperation
Shafie, Ahmed El; Khattab, Tamer; El-Keyi, Amr; Nafie, Mohamed ( John Wiley and Sons Ltd , 2016 , Article)In this paper, we consider a cognitive scenario where an energy harvesting secondary user shares the spectrum with a primary user. The secondary source helps the primary source in delivering its undelivered packets during ... -
Transmit and receive cooperative cognition: Protocol design and stability analysis
El Shafie, Ahmed; El-Keyi, Amr; Khattab, Tamer; Nafie, Mohamed ( IEEE Computer Society , 2013 , Conference Paper)In this paper, we investigate the stability of a cooperative cognitive system. We propose a cooperative secondary transmitter-receiver system (CSTR), where, the secondary transmitter (ST) and the secondary receiver (SR) ...