Chinese Researchers Transmit 150 Mb/s Over Li-Fi

[doomtomb]

Correction: The article reads 622 MB/s to and from the moon using lasers. NASA actually only managed 622 MEGABITS per second, not MEGABYTES. If it were 622 MB/s, they would need a laser capable of switching on/off at least 5 billion times a second, that's with no error correction coding.

SOURCE: http://www.engadget.com/2013/10/24/nasa-llcd-data-transmission-record/

 

[hang-the-9]

Moon, huh? How was the latency?

One way to the moon is 1.282 light seconds at average distance, so assuming things go at light speed without issues, about 3,000ms.

 

[coolitic]

Wifi uses radiowaves, which is a kind of "light" itself.
Normally light is referred to ones in or near the visible spectrum. Li-fi seems much more supceptible to interference.

 

[tolham]

that doesn't sound practical. using light beams means it can't go through walls, which means you still have to use wires or wifi to get your internet around the house. so why not just use wires or wifi?

 

[mman74]

Pardon my stupidity, but LiFi needs line of sight but is secure. Cat 6/7 is blinding fast and doesn't need line of sight and is secure. It's a great concept but how many people are really going to use it? Does it work through thick glass say in a secure room with an infectious disease that you're not going to run a LAN cable in and the Wifi isn't penetrating?

 

[brythespy]

Seeing this new technology, and learning that NASA transmitted 622MB/s!!! All the way to the fricken moon using lasers, gives me slight more hope for humanity.

 

[Colt Nrg]

um "" Maby they use mirror prizumes to bend the light to little mirror's around the house.

 

[Colt Nrg]

and the light has to be inadvisable or it will look like a disco ball room .good luck with that

 

[brythespy]

Pardon my stupidity, but LiFi needs line of sight but is secure. Cat 6/7 is blinding fast and doesn't need line of sight and is secure. It's a great concept but how many people are really going to use it? Does it work through thick glass say in a secure room with an infectious disease that you're not going to run a LAN cable in and the Wifi isn't penetrating?

You should know by now that you cannot have that mentality when it comes to technological advances. What seems impractical, useless, "never going to be used", could be the norm 10 years from now lol.