Abstract: With the rapid growth of technology in intelligent city networks, navigating inside complex buildings has become increasingly difficult. The indoor Global Positioning System (GPS), which ...

Abstract: Given the exponential surge in data traffic and the proliferation of connected smart devices, traditional radio frequency (RF)-based wireless communication systems have to confront mounting ...

Clean air vents are one of the simplest ways to protect your indoor air quality, keep energy bills in check, and extend the ...