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Electric Vehicles (EVs) are gradually becoming more attractive, as they offer economically viable and environmentally friendly transportation solutions when compared to their gas-powered counterparts. This trend requires wide deployment of fast charging stations to extend EV driving ranges. However, the operation of such facilities could become a bottleneck, as the power demand from the grid, especially...
In this paper, we investigate channel modeling for visible light communications using ray tracing approach. The simulation environment is created in Zemax® and enables us to specify the geometry of the environment, the objects inside, the reflection characteristics of the surface materials as well as the specifications of the light sources and receivers. The received optical power and the delay of...
In this paper, we characterize visible light communication channels through Zemax®13 software. In our approach, we create a three dimensional indoor environment with specified dimensions in Zemax® and integrate the lighting source (i.e., LED). Using the ray tracing features of Zemax®, we compute the received optical power and the delays of direct/indirect rays. This information is then imported into...
This work presents the impact of reconfigurable antenna on radio channel characteristics of IEEE 802.11ac system, which is the next evolution of Wi-Fi systems. Reconfigurable antennas (RA) can be used to change radio channel characteristics in favor of receiver design. The results show that RA can be used to reduce power of some of the delay clusters, which lead to minimizing excess delays of these...
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