Investigation on available bandwidth in visible-light communications

Marcu, Alina-Elena; Dobre, Robert Alexandru; Vladescu, Marian

doi:10.1109/siitme.2016.7777287

Cited by 6 publications

(1 citation statement)

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“…There are many research about comparative study in VLC system that is interesting to be discussed to gain deeper understanding to develop VLC system, such as different modulation technique in VLC system [1], comparison study of OFDM multiplexing schemes (DCO, ACO, ADO) [2], placement optimization of LED-array as emitter [3], available bandwidth through red, green and blue phosphor LED [4], effect of color filter in VLC physical layer system using mica paper [5]- [6], noise analysis using variety Op-Amp and photodiode for VLC system [7]- [8], single versus multicarrier performance analysis [9], performance comparison using variety QAM modulation from 4 to 512 based RGB LED [10], analysis of different LED array spacing [11], VLC system performance within and without analog filters [12], decoder performance within and without Viterbi [13], and so on.…”

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Analysis of Received Power Characteristics of Commercial Photodiodes in Indoor Los Channel Visible Light Communication

Putra¹,

Adiono²

2017

ijacsa

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Abstract-To date, the photodiode still the first choice component is used in optical communication, especially for visible light communication (VLC) system. It has advantages of speed, energy consumption, and sensitivity, compared to other devices (e.g. image sensor). There are many practical implementations of high-speed VLC which uses photodiode. Commercially available photodiode typically have specific characteristics, so that it needs some consideration to be used as optimal receiver devices in VLC system. In this paper, analysis of received power characteristics of the photodiode in indoor lineof-sight (LoS) channel of VLC system is discussed. MATLAB® simulation is used as approach model (student version). The experiments are done by changing several parameters such as the semi-angle half power of the transmitter, distance from the transmitter to receiver, room size, field-of-view (FOV), lens index and optical filter gain. From the results, it can be known that distance, room size, FOV and LED power factor to have linear characteristic against the received power of commercial photodiode. Also in LoS channel model, the gain of optical filter and lens index plays an important role in defining the characteristics of received power.

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