Browsing Faculty Contributions by Title
Now showing items 14905-14924 of 18163
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Space vector pulse width modulation techniques for a five-phase impedeance source and quazi impedeance source inverters
( IEEE , 2015 , Conference Paper)Impedance source inverter (ZSI) and its variant quasi impedance source inverter (qZSI) are single stage inverters that transform dc to ac and boost the source voltage at the same time. These topologies have attracted great ... -
Space vector pulse-width modulation technique for an eleven-phase voltage source inverter with sinusoidal output voltage generation
( IET , 2015 , Article)This study discusses the space vector pulse-width modulation (SVPWM) scheme for an eleven-phase two-level voltage source inverter, aimed at producing a sinusoidal output voltage waveform. Generalised space vector theory ... -
Space vector PWM for a three-phase to six-phase direct AC/AC converter
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper a generalized multi-phase space vector theory is considered for developing the space vector modulation of a three-phase to six-phase AC to AC converter. The modulation is based on the control of the voltage ... -
Space vector vs. sinusoidal carrier-based pulse width modulation for a seven-phase voltage source inverter
( China Power Supply Society , 2019 , Article)The paper presents an extensive comparison between two pulse width modulation (PWM) control schemes, namely carrier-based and space vector based PWM for a seven-phase voltage source inverter. Sinusoidal carrier-based PWM ... -
Spam Detection Approach for Secure Mobile Message Communication Using Machine Learning Algorithms
( Hindawi , 2020 , Article)The spam detection is a big issue in mobile message communication due to which mobile message communication is insecure. In order to tackle this problem, an accurate and precise method is needed to detect the spam in mobile ... -
Spammer Detection and Fake User Identification on Social Networks
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)Social networking sites engage millions of users around the world. The users' interactions with these social sites, such as Twitter and Facebook have a tremendous impact and occasionally undesirable repercussions for daily ... -
Spark ignition of a turbulent shear-less fuel-air mixing layer
( Elsevier Ltd , 2016 , Article)A planar methane-air mixing layer with equal velocity in the two streams has been used to examine the ignition probability and the non-premixed edge flame speed following spark ignition. The mixing layer has approximately ... -
Sparse Equalizers for OFDM Signals with Insufficient Cyclic Prefix
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)The cyclic prefix (CP) is appended in orthogonal frequency division multiplexing (OFDM) signals to combat inter-symbol interference (ISI) and inter-carrier interference (ICI) induced by the communication channel, which ... -
Sparsifying dictionary analysis for FIR MIMO channel-shortening equalizers
( IEEE , 2016 , Conference Paper)In this paper, we propose a general framework that transforms the problems of designing sparse finite-impulse response channel-shortening equalizers and target impulse response filters for multiple antenna systems into the ... -
Sparsity-aware joint frame synchronization and channel estimation: Algorithm and USRP implementation
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)Conventional correlation-based frame synchronization techniques can suffer significant performance degradation over multi-path frequency-selective channels. As a remedy, in this paper we consider joint frame synchronization ... -
Sparsity-aware Multiple Relay Selection In Large Decode-and-forward Relay Networks
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)Cooperative communication is a promising technology that has attracted significant attention recently thanks to its ability to achieve spatial diversity in wireless networks with only single-antenna nodes. The different ... -
Sparsity-Aware multiple relay selection in large dual-hop decode-And-forward broadband relay networks
( IEEE , 2016 , Conference Paper)In this paper, three novel techniques are proposed and investigated for multiple relay selection in dual hop OFDM networks. These techniques are based on the exploitation of sparse signal recovery theory and on carefully-designed ... -
Sparsity-aware multiple relay selection in large multi-hop decode-and-forward relay networks
( Springer International Publishing , 2016 , Article)In this paper, we propose and investigate two novel techniques to perform multiple relay selection in large multi-hop decode-and-forward relay networks. The two proposed techniques exploit sparse signal recovery theory to ... -
Sparsity-aware narrowband interference mitigation and subcarriers selection in OFDM-based cognitive radio networks
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)In this paper, the performance of an orthogonal frequency division multiplexing overlay cognitive radio network with subcarrier selection schemes is investigated. We propose three subcarrier selection techniques that reduce ... -
Sparsity-Based Joint NBI and impulse noise mitigation in hybrid PLC-Wireless transmissions
( IEEE , 2018 , Article)We propose a new sparsity-aware framework to model and mitigate the joint effects of narrow-band interference (NBI) and impulsive noise (IN) in hybrid powerline and unlicensed wireless communication systems. The proposed ... -
Sparsity-cognizant multiple-access schemes for large wireless networks with node buffers
( IEEE , 2015 , Conference Paper)This paper proposes efficient multiple-access schemes for large wireless networks based on the transmitters' buffer state information and their transceivers' duplex transmission capability. First, we investigate the case ... -
Spatial and temporal changes in electricity demand regulatory during pandemic periods: The case of COVID-19 in Doha, Qatar
( Elsevier , 2022 , Article)The propagation of the pandemic times, especially during COVID-19, has caused millions of morbidity and mortality cases across the world, forcing people to change their lifestyles and governments to take different measures ... -
Spatial assessment of audience accessibility to historical monuments and museums in Qatar during the 2022 FIFA World Cup
( Elsevier , 2022 , Article)Hosting mega sports events is a key driver for sustainable development, particularly through fostering tourism marketing and planning. Although the 2022 FIFA World Cup has received considerable attention, as the first ... -
Spatial Assessment of COVID-19 First-Wave Mortality Risk in the Global South
( Routledge , 2022 , Article)The coronavirus disease (COVID-19) that appeared in 2019 gave rise to a major global health crisis that is still topping global health, socioeconomic, and intervention program agendas. Although the outbreak of COVID-19 has ... -
Spatial Associations between COVID-19 Incidence Rates and Work Sectors: Geospatial Modeling of Infection Patterns among Migrants in Oman
( Routledge , 2022 , Article)Migrants are among the groups most vulnerable to infection with viruses due to the social and economic conditions in which they live. Therefore, spatial modeling of virus transmission among migrants is important for ...