2 citations · 3 across the 2 of their papers we have counts for
3 papers
cs.NI2012★ 1 cited
Optimal Random Access and Random Spectrum Sensing for an Energy Harvesting Cognitive Radio
Ahmed El Shafie, Ahmed Sultan
We consider a secondary user with energy harvesting capability. We design access schemes for the secondary user which incorporate random spectrum sensing and random access, and whi…
cs.NI2012
Cooperative Cognitive Relaying with Ordered Cognitive Multiple Access
Ahmed El Shafie, Ahmed Sultan
We investigate a cognitive radio system with two secondary users who can cooperate with the primary user in relaying its packets to the primary receiver. In addition to its own que…
cs.IT2012★ 2 cited
Optimal Spectrum Access for Cognitive Radios
Ahmed El Shafie
In this paper, we investigate a time-slotted cognitive setting with buffered primary and secondary users. In order to alleviate the negative effects of misdetection and false alarm…