This work has investigated the feasibility of applying inverse distance weight (IDW), ordinary
kriging (OK) and K-nearest neighbour (K-NN) interpolation to capture the three dimensional …

Indoor positioning and navigation increasingly have become popular, and there are many
different approaches, using different technologies. In nearly all of the approaches, the …

Accurate estimation of the spatial distribution of pollutants, such as heavy metals, is
indispensable in investigation of contaminated sites. In this paper, we develop a novel deep …

In the fifth-generation (5G) high-speed train (HST) system operating in the millimeter-wave
(mmWave) band, a much higher Doppler shift occurs. Doppler shift severely degrades …

Spectrum resources are becoming harder to come by for wireless communications. The
spectrum environment map (SEM), which depicts the electromagnetic environment's current …

Radio maps can enhance the capability of wireless sensor networks and improve the
efficiency of spectrum utilization. However, the construction of an accurate radio map in the …

Radio maps are a promising technology that can boost the capability of wireless networks by
enhancing spectrum efficiency. Since spatial interpolation is a critical challenge to construct …

This work has investigated the feasibility of using cluster ordinary kriging (OK) interpolation
to speed up indoor three-dimensional (3D) radio environment map (REM) generation time …

To achieve highly efficient spectrum usage, dynamic sharing of scarce spectrum resources
has recently become the subject of intense discussion. The technologies of dynamic …

Radio map or radio coverage prediction in indoor and outdoor remains a challenge of great
interest due to the large number of applications it allows. Many techniques such as data …