Implementation of Speech Simplex Communication using Visible Light

The visible light used by many humans as lighting only. However, in some studies have been shown that visible light can be used also for other needs that the communication system. Visible Light Communication (VLC) using white Light Emitting Diode (LED) is a promising technology for next generation communication for short range and high speed wireless transmission. In this paper, implementation of speech simplex communication using visible light is presented. Speech simplex communication using visible light needed in area where communication cannot be done easily using a technology that uses electromagnetic waves. Inexpensive transmitter and receiver of VLC system is designed and its performance is evaluated. Performance analysis is done with respect to color filter, photo sensitivity of photodiode at the receiver and the increase in distance between the transmitter and receiver. The result shows the system can receiving signal in speech frequency between 300 Hz until 3400 Hz. Test by transmitting the signal at a fixed distance results the voltage of the signal has increased almost two times that of the input signal, with the strengthening of 1.66 times. Experimental results show that the data transmission distance achieved up to 2,3 m and pair of red color filter mounted on the transmitter and the red color filter in the receiver has a voltage received relatively good compared with most other colors.

Dibuat oleh : Lita Lidyawati, Lucia Jambola, Arsyad Ramadhan Darlis
Alamat e-mail: lita.sunoko@gmail.com
Kata kunci : visible light communication, light emitting diode, photodiode, color filter pair
Keterangan: Karya ilmiah ini disampaikan pada The 2016 International Symposium on Electronics and Smart Devices, November 2016, InstitutTeknologi Bandung (ITB)

Implementation of Speech Simplex Communication using Visible Light