Browsing by Author "Hazaa, Khalifa"
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Enhancing passive UHF RFID backscatter energy using chirp spread spectrum signals and channel shortening
Ben-Jabeur, Taoufik; Kadri, Abdullah; Hazaa, Khalifa Abdulla ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)Performance of passive ultrahigh frequency radio-frequency identification (UHF RFID) systems depends on the energy level of the backscattered signal from the RF tag to the RFID reader. In the indoor environment, the ... -
Evaluating the Online Learning Experience at Higher Education Institutions
Abdel-Salam, Abdel Salam G.; Hazaa, Khalifa; Abu-Shanab, Emad Ahmed ( IGI Global , 2022 , Article)In light of recent COVID-19 pandemic, universities had to cope by resorting to online learning without previous preparation. This paper tries to investigate student satisfaction with online learning. The literature review ...