Title :
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
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;
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
DOI :
10.1109/CSNDSP.2008.4610760
