1 citations · 1 across the 3 of their papers we have counts for
3 papers
Opportunistic Beamforming using Dumb Basis Patterns in Multiple Access Cognitive Channels
Ahmed M. Alaa, Mahmoud H. Ismail, Hazim Tawfik
In this paper, we investigate multiuser diversity in interference-limited Multiple Access (MAC) underlay cognitive channels with Line-of-Sight interference (LoS) from the secondary…
Opportunistic Spectrum Sharing using Dumb Basis Patterns: The Line-of-Sight Interference Scenario
Ahmed M. Alaa, Mahmoud H. Ismail, Hazim Tawfik
We investigate a spectrum-sharing system with non-severely faded mutual interference links, where both the secondary-to-primary and primary-to-secondary channels have a Line-of-Sig…
Spectrum Sensing Via Reconfigurable Antennas: Fundamental Limits and Potential Gains
Ahmed M. Alaa, Mahmoud H. Ismail, Hazim Tawfik
We propose a novel paradigm for spectrum sensing in cognitive radio networks that provides diversity and capacity benefits using a single antenna at the Secondary User (SU) receive…