Sichtbare Lichtkommunikation mit Farbverschiebungstastung

Details

Veröffentlichungs-Nr.

EP3340492

Aktenzeichen

EP16206756

Anmeldetag

23. Dezember 2016

Veröffentlichung

30. Oktober 2019

Erteilung

30. Oktober 2019

Rechtsraum

EP

IPC

H04B10/116H01L25/075

Abstract

The present invention provides a visible light communication transmitter (13), a visible light communication receiver (14), a visible light communication system (2), and a method of visible light communication, wherein the transmitter, the receiver, the system and the method are suitable for colour shift keying (CSK), as well as providing a method of colour shift keying. The visible light communication transmitter (13) comprises at least six, preferably seven, and more preferably eight, graphene-based light emitting devices (LED-1, LED-2, ... LED-8) of different peak transmission wavelengths from each other. The visible light communication receiver (14) comprises a corresponding number of graphene-based photodetectors (PD-1, PD-2, ... PD-8) of different peak reception wavelengths from each other. A visible light communication system according to the invention comprises such a transmitter and such a receiver, wherein each respective one of the different peak reception wavelengths of the six graphene-based photodetectors corresponds to a respective one of the different peak transmission wavelengths of the graphene-based light emitting devices. Such a system allows a method of visible light communication, preferably using colour shift keying, with a colour constellation of at least six, maybe seven, or even eight base colours. These can provide an increased number of symbols, a reduced symbol error rate and an improved signal-to-noise ratio in comparison to traditional visible light communication systems for colour shift keying, which use a colour constellation of only three or four base colours.

Anmelder

Firmen

Vestel Elektronik Sanayi ve Ticaret A.S.
Özyegin Üniversitesi

Land

🇹🇷 Türkei

Fachgebiete