Tag Archives: li-fi

Connect with a New Type of Li-Fi

Many of us are stuck with slow Wi-Fi, and eagerly waiting for light-based communications to be commercialized, as Li-Fi promises to be more than 100 times faster than the Wi-Fi connections we use today. As advertised so far, most Li-Fi systems depend on the LED bulb to transmit data using visible light. However, this implies limitations on the technology being applied to systems working outside the lab. Therefore, researchers are now using a different type of Li-Fi using infrared light instead. Read more [...]

Wi-Fi or Li-Fi, What Should You Choose?

Although difficult to believe, but Wi-Fi is running out of steam, or more technically speaking, running out of spectrum. With almost all devices connected with Wi-Fi, our consumption of ever-increasing amounts of information is actually pushing the capacity of Wi-Fi to handle data, to its limits. Presently, we use radio waves for transmitting information using Wi-Fi, but this method has its limits and it can only transfer so much at a time. According to the latest estimates, by 2019, we will Read more [...]

Why is Li-Fi better than Wi-Fi?

Imagine wandering through an art gallery with your PDA. As you reach an interesting canvas, your PDA starts downloading information about the painting. When you move to another, your PDA displays content relative to the current piece of art. This is called content fencing – tailoring information to specific locations so that users receive information relevant to their current location. Content fencing is impossible to achieve with Wi-Fi – radio waves have a far greater spreading power. However, Read more [...]

Connecting to the web via LEDs: Li-Fi

Connecting to the Internet is best done through copper wire or high-speed wireless connections. Not many are aware of an additional method – using light beams. This is accomplished not by the usual optical fiber stuff, but by using LEDs. Communication with lights is nothing new - it has been done before. The Scottish scientist, Sir Alexander Graham Bell had invented an arsenal of instruments for communication and these included Photophones. The first instruments to use light for communication Read more [...]