I guess we all have heard of Wi-Fi or also known as Wireless Local Area Network (WLAN) as defined by Wi-Fi Alliance where the communication protocol is based on IEEE 802.11standards.
Now comes a new term called "Li-Fi" where it uses light as a medium to transmit data. It had been demonstrated at the University of Edinburgh where the Li-Fi technology was used to stream high definition video. It uses light as medium instead of electromagnetic waves.
The technology behind the Li-Fi is basically using Orthogonal Frequency Division Multiplexing or also known as OFDM with a little modification. With this technology one able to split the data stream into thousand of parallel streams with using multiple carrier frequencies to modulate the light sources in order to achieve high throughput transmission.
You can imagine with the light source around us such as light bulb, tube light, street light, etc. able to transmit data. When ever there is light one able to transmit and receive data. I will investigate into this technology further and maybe build some working prototype.
Now comes a new term called "Li-Fi" where it uses light as a medium to transmit data. It had been demonstrated at the University of Edinburgh where the Li-Fi technology was used to stream high definition video. It uses light as medium instead of electromagnetic waves.
The technology behind the Li-Fi is basically using Orthogonal Frequency Division Multiplexing or also known as OFDM with a little modification. With this technology one able to split the data stream into thousand of parallel streams with using multiple carrier frequencies to modulate the light sources in order to achieve high throughput transmission.
You can imagine with the light source around us such as light bulb, tube light, street light, etc. able to transmit data. When ever there is light one able to transmit and receive data. I will investigate into this technology further and maybe build some working prototype.
