Characterization of LEDs for visible-light communications

Name: Characterization of LEDs for visible-light communications
Author: Kısacık, Rıfat, Yalcinkaya, A. D., Pusane, A. E., Baykas, T., Uysal, Murat

İsim	Characterization of LEDs for visible-light communications
Yazar	Kısacık, Rıfat, Yalcinkaya, A. D., Pusane, A. E., Baykas, T., Uysal, Murat
Basım Tarihi:	2021-02
Basım Yeri	- SPIE
Konu	3-dB bandwidth, Light-emitting diodes, Modulation bandwidth characteristics, Visible-light communication
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0091-3286
Kayıt Numarası	d3006c8f-f8d1-4bc3-9d86-e67948aa9f81
Lokasyon	Electrical & Electronics Engineering
Tarih	2021-02
Örnek Metin	Recent advances in solid-state technologies have enabled the development of light-emitting diodes (LEDs) with favorable features such as long life expectancy, low-power consumption, and reduced heat dissipation. Visible-light communication (VLC) is a short-range wireless access technology that deploys LEDs as wireless transmitters in addition to their primary task of illumination. The major limitation for the design of high-speed VLC systems is the electrical (modulation) bandwidth of the LED. In this study, we investigate the electrical characteristics of a number of off-the-shelf LEDs. Specifically, we determine their frequency responses and match them to their small-signal models. The electrical bandwidths of measured LEDs vary from 250 kHz to 20 MHz and depend on the emitted color and internal circuitry. As a verification of our measurements, we use the sample LEDs as a transmitter in a VLC system setup and determine the supported data rates. The equivalent circuit model is utilized to compare with the measured modulation characteristic of the LED. Furthermore, the bias current effect on the modulation bandwidth is presented.
DOI	10.1117/1.OE.60.2.024102
Cilt	60

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Characterization of LEDs for visible-light communications

Yazar Kısacık, Rıfat, Yalcinkaya, A. D., Pusane, A. E., Baykas, T., Uysal, Murat

Basım Tarihi 2021-02

Basım Yeri - SPIE

Konu 3-dB bandwidth, Light-emitting diodes, Modulation bandwidth characteristics, Visible-light communication

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0091-3286

Kayıt Numarası d3006c8f-f8d1-4bc3-9d86-e67948aa9f81

Lokasyon Electrical & Electronics Engineering

Tarih 2021-02

Örnek Metin Recent advances in solid-state technologies have enabled the development of light-emitting diodes (LEDs) with favorable features such as long life expectancy, low-power consumption, and reduced heat dissipation. Visible-light communication (VLC) is a short-range wireless access technology that deploys LEDs as wireless transmitters in addition to their primary task of illumination. The major limitation for the design of high-speed VLC systems is the electrical (modulation) bandwidth of the LED. In this study, we investigate the electrical characteristics of a number of off-the-shelf LEDs. Specifically, we determine their frequency responses and match them to their small-signal models. The electrical bandwidths of measured LEDs vary from 250 kHz to 20 MHz and depend on the emitted color and internal circuitry. As a verification of our measurements, we use the sample LEDs as a transmitter in a VLC system setup and determine the supported data rates. The equivalent circuit model is utilized to compare with the measured modulation characteristic of the LED. Furthermore, the bias current effect on the modulation bandwidth is presented.

DOI 10.1117/1.OE.60.2.024102

Cilt 60