Performance Evaluation of White LED-based OFDM-VLC Systems with Blue Filters: Experimental Study

Sezer Can Tokgoz, Noha Anous, Serhan Yarkan, Ali Boyaci, Khalid A. Qaraqe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper experimentally evaluates the performance of visible light communications (VLC) systems employing phosphor-coated white light emitting diodes (LEDs). Phosphor-coated white LEDs though widely used commercially, are known to limit the system's maximum data rate. Such a limitation is conventionally treated by two methods: either adding a blue filter at the receiver or using orthogonal frequency multiplexing (OFDM) digital modulation technique. Adding a blue filter at the receiver is controversial in current literature and claimed to decrease the signal-to-noise-ratio (SNR) or to be inefficient if OFDM is employed. Hence, in this work, we experimentally evaluate the above OFDM based VLC system with and without a blue filter. Results are compared to prove that adding a blue filter at the receiver boosts SNR and bit-error-rate (BER) values. This, in turn, helps maximize the data rates supported by such systems. The addition of a blue filter is tested with different modulation techniques. Results in this work remove the controversy around employing a blue filter in OFDM based VLC systems with phosphor-coated white LEDs. Improved BERs and SNRs at high data rates are observed. Specifically, this experimental work demonstrates a BER enhancement of ∼40% and ∼15% for data rates up to 12 Mbps when a blue filter is added.

Original languageEnglish
Title of host publication16th International Multi-Conference on Systems, Signals and Devices, SSD 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages686-690
Number of pages5
ISBN (Electronic)9781728118208
DOIs
Publication statusPublished - Mar 2019
Event16th International Multi-Conference on Systems, Signals and Devices, SSD 2019 - Istanbul, Turkey
Duration: 21 Mar 201924 Mar 2019

Publication series

Name16th International Multi-Conference on Systems, Signals and Devices, SSD 2019

Conference

Conference16th International Multi-Conference on Systems, Signals and Devices, SSD 2019
CountryTurkey
CityIstanbul
Period21/3/1924/3/19

Fingerprint

Orthogonal Frequency Division multiplexing (OFDM)
Diode
Orthogonal frequency division multiplexing
Communication Systems
Light emitting diodes
optical communication
Performance Evaluation
telecommunication
Experimental Study
Communication systems
light emitting diodes
Phosphors
Filter
filters
evaluation
Phosphor
Bit error rate
Signal to noise ratio
phosphors
Modulation

Keywords

  • blue filters
  • experimental study
  • OFDM
  • phosphor LEDs
  • VLC

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Signal Processing
  • Control and Systems Engineering
  • Control and Optimization
  • Instrumentation

Cite this

Tokgoz, S. C., Anous, N., Yarkan, S., Boyaci, A., & Qaraqe, K. A. (2019). Performance Evaluation of White LED-based OFDM-VLC Systems with Blue Filters: Experimental Study. In 16th International Multi-Conference on Systems, Signals and Devices, SSD 2019 (pp. 686-690). [8893211] (16th International Multi-Conference on Systems, Signals and Devices, SSD 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/SSD.2019.8893211

Performance Evaluation of White LED-based OFDM-VLC Systems with Blue Filters : Experimental Study. / Tokgoz, Sezer Can; Anous, Noha; Yarkan, Serhan; Boyaci, Ali; Qaraqe, Khalid A.

16th International Multi-Conference on Systems, Signals and Devices, SSD 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 686-690 8893211 (16th International Multi-Conference on Systems, Signals and Devices, SSD 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Tokgoz, SC, Anous, N, Yarkan, S, Boyaci, A & Qaraqe, KA 2019, Performance Evaluation of White LED-based OFDM-VLC Systems with Blue Filters: Experimental Study. in 16th International Multi-Conference on Systems, Signals and Devices, SSD 2019., 8893211, 16th International Multi-Conference on Systems, Signals and Devices, SSD 2019, Institute of Electrical and Electronics Engineers Inc., pp. 686-690, 16th International Multi-Conference on Systems, Signals and Devices, SSD 2019, Istanbul, Turkey, 21/3/19. https://doi.org/10.1109/SSD.2019.8893211
Tokgoz SC, Anous N, Yarkan S, Boyaci A, Qaraqe KA. Performance Evaluation of White LED-based OFDM-VLC Systems with Blue Filters: Experimental Study. In 16th International Multi-Conference on Systems, Signals and Devices, SSD 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 686-690. 8893211. (16th International Multi-Conference on Systems, Signals and Devices, SSD 2019). https://doi.org/10.1109/SSD.2019.8893211
Tokgoz, Sezer Can ; Anous, Noha ; Yarkan, Serhan ; Boyaci, Ali ; Qaraqe, Khalid A. / Performance Evaluation of White LED-based OFDM-VLC Systems with Blue Filters : Experimental Study. 16th International Multi-Conference on Systems, Signals and Devices, SSD 2019. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 686-690 (16th International Multi-Conference on Systems, Signals and Devices, SSD 2019).
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