Multi spectral capacitive sensor (MSCS) is a sensor that is formed based on the concept of white noise impedance spectroscopy. This concept utilizes the spectral noise frequency approach of the frequency domain signal resulting from the field effect on the dielectric. As a sensor, the consistency results obtained is stable, so that it can facilitate analysis. In this study, we tried to compare data groups, starting with 100 data sets and 300 data sets from a total of 600 data sets for H2O and H2O mixed with NaOH materials and H2O mixed with HCl using a new transformation, namely Tamsir statistical transformation (TST). Furthermore, grouping data uses the total amplitude value of each data set obtained. We obtain the results in the form of differences between groups of data with fluctuations in response patterns that are close together which are shown in 2D graphics. Hence, we can implement the data groups as a reference pattern of fluctuations in a material.
Visible Light Communication (VLC) has been attracting many researchers in the last decade to develop a lighting system as well as a communication system simultaneously. Light Emitting Diode (LED) for lighting systems are becoming more popular and widespread. It offers low consumption energy due to its energy transfer efficiency from electric to light. LED also offers a high response for modulation that makes it is also possible for communication purposes. Therefore, an improved configuration can provide a green communication system by reducing power consumption through combining lighting and communication system. Detection responsivity is a challenging issue to realize a VLC system. It will affect covered areas and obtained signal quality. This paper discusses the use of PIN photodiode and Avalanche Photo Diode (APD) for a detection device in a digital transmission data. This detector is generally used for fiber optic systems and offers an avalanche effect that can increase the obtained photocurrent. The obtained proper configuration and multiplication effect characteristics will be useful for designing a VLC system for green communication.
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