Transmission quality improvement by LED back-off optimization for visible light wireless communications

Takahiro Chikamori; Shigeru Tomisato; Satoshi Denno; Kazuhiro Uehara

doi:10.1109/WPMC.2017.8301814

Transmission quality improvement by LED back-off optimization for visible light wireless communications

Takahiro Chikamori, Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This paper proposes an LED back-off optimization method for visible light wireless communications. The method changes the set back-off value and controls LED saturation according to Noise-to-Carrier power ratios (N/C) of a receiver. Signal-to-Noise and Distortion Ratio (SNDR) of a receiver with the proposed method is evaluated by computer simulation. In this evaluation, a wireless system with OFDM signals is assumed and an LED linearization method which uses clipping followed by inband filtering and pre-distortion is employed. The evaluation results show that the back-off optimization can improve transmission quality in a receiver. The result also shows that the linearization method can enhance the improvement.

Original language	English
Title of host publication	Proceedings - 20th International Symposium on Wireless Personal Multimedia Communications, WPMC 2017
Publisher	IEEE Computer Society
Pages	229-233
Number of pages	5
Volume	2017-December
ISBN (Electronic)	9781538627679
DOIs	https://doi.org/10.1109/WPMC.2017.8301814
Publication status	Published - Feb 22 2018
Event	20th International Symposium on Wireless Personal Multimedia Communications, WPMC 2017 - Bali, Indonesia Duration: Dec 17 2017 → Dec 20 2017

Other

Other	20th International Symposium on Wireless Personal Multimedia Communications, WPMC 2017
Country	Indonesia
City	Bali
Period	12/17/17 → 12/20/17

Keywords

Back-off
LED
Non-linear distortion compensation
Saturation control
Visible light communication

ASJC Scopus subject areas

Computer Networks and Communications
Computer Science Applications
Human-Computer Interaction

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Transmission quality improvement by LED back-off optimization for visible light wireless communications. / Chikamori, Takahiro; Tomisato, Shigeru ; Denno, Satoshi ; Uehara, Kazuhiro.

Proceedings - 20th International Symposium on Wireless Personal Multimedia Communications, WPMC 2017. Vol. 2017-December IEEE Computer Society, 2018. p. 229-233.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Chikamori, T, Tomisato, S , Denno, S & Uehara, K 2018, Transmission quality improvement by LED back-off optimization for visible light wireless communications. in Proceedings - 20th International Symposium on Wireless Personal Multimedia Communications, WPMC 2017. vol. 2017-December, IEEE Computer Society, pp. 229-233, 20th International Symposium on Wireless Personal Multimedia Communications, WPMC 2017, Bali, Indonesia, 12/17/17. https://doi.org/10.1109/WPMC.2017.8301814

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