Today, fog computing plays an essential role in human life. One of the challenges in the fog and cloud environment is the hierarchical service process. Requests are sent to Fog, and if Fog cannot provide service, they are ...

In the recent research on Vehicular Ad-hoc Networks (VANETs), new practical goals are pursued. They provide real-world communications between vehicles and make them reliable and easily used. The VANETs have a fundamental ...

Creating a secure communication channel in hierarchical networks is a very important issue and several algorithms have been proposed for it. Unfortunately, due to limited resources in fog networks, which are a special type ...

A new circularly polarized (CP) dielectric resonator (DR) antenna is addressed in this research. A cross-shaped slot embedded on the ground plane is used as a feed of a sandglass-shaped dielectric resonator (SSDR). An ...

Receiver structure either coherent or non-coherent in a relay channel with amplify and forward (AF) and decode and forward (DF) relaying schemes is studied and a new receiver is proposed for both relaying schemes. In the ...

Cyber-physical systems (CPSs) are deeply intertwining and integrating the physical processes with cyber components. In these intelligent systems, a process is monitored and controlled by cyber systems and different types ...

Three ultra-compact half-mode substrate integrated waveguide (HMSIW) equal/unequal filtering power dividers (FPDs) based on the metamaterial concept and the evanescent mode technique are recommended in this paper. The ...

For Orthogonal Frequency Division multiplexing (OFDM) systems in environments with high mobility and non-stationary channel characteristics, channel estimation is a very challenging task. To handle this issue, a deep ...