Browsing by Author "El-Keyi A."
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Degrees of Freedom of the Full-Duplex Asymmetric MIMO Three-Way Channel with Unicast and Broadcast Messages
Elmahdy, A.M.; El-Keyi, A.; Mohasseb, Y.; Elbatt, T.; Nafie, M.; Seddik, K.G.; Khattab, T.... more authors ... less authors ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)In this paper, we characterize the total degrees of freedom (DoFs) of the full-duplex asymmetric multiple-input multiple- output (MIMO) three-way channel. Each node has a separate-antenna full-duplex MIMO transceiver with ... -
Energy-efficient cooperative cognitive relaying schemes for cognitive radio networks
El Shafie A.; Khattab T.; El-Keyi A. ( Elsevier B.V. , 2018 , Article)We investigate a cognitive radio network in which a primary user (PU) may cooperate with a cognitive radio user (i.e., a secondary user (SU)) for transmissions of its data packets. The PU is assumed to be a buffered node ... -
Stability and delay analysis for cooperative relaying with multi-access transmission
Salman M.; El-Keyi A.; Nafie M.; Hasna , Mazen ( Springer Verlag , 2015 , Conference Paper)We consider a cooperative relaying system with two source terminals, one full duplex relay, and a common destination. Each terminal has a local traffic queue while the relay has two relaying queues to store the relayed ...