R
Raja Ahmad
Researcher at Khalifa University
Publications - 105
Citations - 2490
Raja Ahmad is an academic researcher from Khalifa University. The author has contributed to research in topics: Optical fiber & Chalcogenide. The author has an hindex of 23, co-authored 99 publications receiving 1767 citations. Previous affiliations of Raja Ahmad include McGill University & COMSATS Institute of Information Technology.
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A survey on virtual machine migration and server consolidation frameworks for cloud data centers
TL;DR: This paper reviews state-of-the-art bandwidth optimization schemes, server consolidation frameworks, DVFS-enabled power optimization, and storage optimization methods over WAN links and investigates the critical aspects of virtual machine migration schemes.
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Decentralized Consensus for Edge-Centric Internet of Things: A Review, Taxonomy, and Research Issues
TL;DR: This paper scrutinizes the pros and cons of state-of-the-art decentralized consensus systems for edge-centric Internet of Things and proposes a thematic taxonomy, which highlights centralization risk and deficiencies in blockchain/blockchainless solutions.
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All-optical wavelength conversion in an integrated ring resonator
Alessia Pasquazi,Raja Ahmad,Martin Rochette,Michael R. E. Lamont,Brent E. Little,Sai T. Chu,Roberto Morandotti,David J. Moss +7 more
TL;DR: The first system penalty measurements for all-optical wavelength conversion via four wave mixing in an integrated, CMOS compatible, ring resonator are presented, obtaining < 0.3 dB system penalty at 2.5Gb/s for ∼22dBm average pump power.
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Sustainable Cloud Data Centers: A survey of enabling techniques and technologies
TL;DR: This paper examines sustainable CDCs from various aspects to survey the enabling techniques and technologies, and presents case studies from both academia and industry that demonstrate favorable results for sustainability measures in CDCs.
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The role of blockchain technology in telehealth and telemedicine.
TL;DR: This study has explored the key role that blockchain technology can play to provide necessary information security and privacy, operational transparency, health records immutability, and traceability to detect frauds related to patients' insurance claims and physician credentials.