COVID-19 is a highly contagious coronavirus that has caused traumatic global havoc. By September 14, 2021, there were 224+ million confirmed cases and 4.6+ million fatalities world-wide [1]. Intern…
Optical wireless communication (OWC) technology has attracted many attentions recently. Lighting luminaries equipped with red-green-blue (RGB) based light-emitting-diodes (LEDs) or laser-diode (LDs…
Low-power wide area networks (LPWANs) are emerging Internet of Things (IoT) technologies that support smart city development. An individual application inherits distinct features that demand differ…