50 citations · 149 across the 38 of their papers we have counts for
3 papers · 1 filter
Adaptive Sensing and Transmission Durations for Cognitive Radios
Wessam Afifi, Ahmed Sultan, Mohammed Nafie
In a cognitive radio setting, secondary users opportunistically access the spectrum allocated to primary users. Finding the optimal sensing and transmission durations for the secon…
Cognitive Radio Transmission Strategies for Primary Erasure Channels
Ahmed El-Samadony, Mohammed Nafie, Ahmed Sultan
A fundamental problem in cognitive radio systems is that the cognitive radio is ignorant of the primary channel state and the interference it inflicts on the primary license holder…
Power Control for Maximum Throughput in Spectrum Underlay Cognitive Radio Networks
John Tadrous, Ahmed Sultan, Mohammed Nafie +1
We investigate power allocation for users in a spectrum underlay cognitive network. Our objective is to find a power control scheme that allocates transmit power for both primary a…