VLC vs Wifi | Difference between VLC and Wifi
This page compares VLC vs Wifi and describes difference between VLC and Wifi wireless technologies.
|Full form||Visible Light Communication||Wireless Fidelity|
|Maturity of system||Less||More|
|Coverage Range||short (few meters)||Higher (tens of meters)|
|External Power||Do not require external power as it has power for LED lamp.||Need external power|
|Backhaul||Ethernet or powerline communication is used.||It is provided using ethernet or broadband connection.|
|RF and Antenna Front end||Do not required, moreover illumination power is used as transmit power.||Required, as wifi operates using EM waves.|
|Security||More secure as it confines the data transmission to one area.||Less secure as EM waves can not be confined to one particular region, Separate encryption techniques are to be employed in order to make wifi connection more robust.|
|Data density/Frequency re-use||Interference is bounded and hence reuse efficiency is higher.||WiFI prone to co-channel interference and hence more wifi nodes do not lead to increase in the data capacity linearly as it can be.|
|NLOS performance||communication can not be established in non line of sight if reflected signal is poor.||communication is possible but performance gets degraded if attenuation is more due to signal fading.|
|BOM (i.e. Bill of Materials)||Do not require expensive components such as RF devices and antenna. It is cheaper system.||RF and antenna are must for wifi to be exist. Hence it is costly compare to VLC.|
The table above provides comparison between VLC and Wifi wireless technologies. From these one can derive conclusion about VLC and Wifi technologies based on application of use.