2 results listed
Visible light communication (VLC), popularly known as light fidelity (Li-Fi), is a promising alternative to overcome the limitations of radio-wave communication. VLC is a green technology which uses light-emitting diode (LED) illumination to transmit data without needing fibre cables. VLC is applicable for both indoor and outdoor communication. In this study, we investigate the effect of sandstorms on VLC via simulating a vehicular-to-road VLC (V2LC) outdoor application. Sandstorms are a weather phenomenon which frequently occurs in the Arab peninsula and other parts of the world; in this context, researchers have not thus far addressed the effect of sand particles, which absorb and scatter light, on VLC. Our simulation is conducted using MATLAB software, and the results show that the effect of sandstorms on VLC is similar to that of fog and rain as investigated by other researchers. However, sandstorms are also different in terms of the nature of sandstorm particles, with different sizes and refraction indices when compared with rain and fog particles. We also find that high-density-clay sandstorms, among other types of storms, most severely affect VLC communication and limit the transmission range. Other low- and medium-density storms less severely affect VLC while exhibiting a relatively larger communication range.
International Conference on Advanced Technologies, Computer Engineering and Science
ICATCES
K. J. EBRAHIM
Alauddin Al-Omary
In this paper, the performance of two ultra-high frequency for outdoor performance of Multiple Input Multiple Output (MIMO) systems is analyzed. A simulation with realistic scenarios is set up using the Statistical Spatial Channel Model (SSCM) over frequency selective Rayleigh fading channel. The channel behavior of MIMO for two Ultra high frequencies (28 and 73 GHz) using different number of transmitter and receiver antenna, different receiver distance and different propagation scenario is investigated. Parameters are calculated and compared to investigate the MIMO performance for these frequencies such as path loss and received power. The effect of using different antenna is also investigated. The results are analyzed, and a conclusion was drawn about the main characteristics and the usability of these ultra-high frequencies. The investigated frequencies are candidate to become a key component for cellular 5G networks and thus it is vital to investigate them to assist engineers in designing their 5G network.
International Conference on Cyber Security and Computer Science
ICONCS
Alauddin Al-Omary