Equalisation for high-speed Visible Light Communications using white-LEDs

Author

Zeng, Lubin ; Le Minh, Hoa ; Brien, Dominic O. ; Faulkner, Grahame ; Lee, Kyungwoo ; Jung, Daekwang ; Oh, Yunje

Author_Institution

Dept. of Eng. Sci., Univ. of Oxford, Oxford

fYear

2008

fDate

25-25 July 2008

Firstpage

170

Lastpage

173

Abstract

The performance of visible light communications (VLC) system that uses white LEDs is limited by the bandwidth of the LED emitters. In this paper we report LED equalisation techniques that can improve the data transmission rate in VLC systems significantly. Equalisation is employed in the VLC transmitter and receiver and both experiment and simulation results show a significant improvement in the OOK-NRZ data rate when compared with the unequalised devices. This increases from 15 Mbit/s to 75 Mbit/s, whilst maintaining a low bit error rate (BER).

Keywords

equalisers; light emitting diodes; optical communication; LED emitters; OOK NRZ data rate; bit error rate; bit rate 15 Mbit/s to 75 Mbit/s; data transmission rate; equalisation; high speed visible light communications; white LED; Bandwidth; Bit error rate; Light emitting diodes; Optical arrays; Optical noise; Optical receivers; Optical refraction; Optical transmitters; Optical variables control; Reflectivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication Systems, Networks and Digital Signal Processing, 2008. CNSDSP 2008. 6th International Symposium on

Conference_Location

Graz

Print_ISBN

978-1-4244-1875-6

Electronic_ISBN

978-1-4244-1876-3

Type

conf

DOI

10.1109/CSNDSP.2008.4610760

Filename

4610760