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Scientists Use LEDs to Broadcast Wireless Internet

MikeChino (1640221) writes | more than 4 years ago

The Internet 2

MikeChino (1640221) writes "A group of scientists from Germany’s Fraunhofer Institute have devised a way to encode a visible-frequency wireless signal in light emitted by plain old desklamps and other light fixtures. The team was able to achieve a record-setting data download rate of 230 megabits per second, and they expect to be able to double that speed in the near future. While the regular radio-frequency wi-fi most of us use currently is perfectly fine, it does have its flaws — it has a limited bandwidth that confines it to a certain spectrum and if you’ve ever had someone leech off of your connection, you know that it also leaks through walls. LED wireless signals would theoretically have none of these downsides."
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Problem, or benefit? (1)

Spitfirem1 (1124377) | more than 4 years ago | (#31442308)

To many, transmission through walls or otherwise out of line-of-sight is a benefit. I know I'd prefer not to have to buy and set up an LED transmitter for every room in my home.

Re:Problem, or benefit? (1)

natehoy (1608657) | more than 4 years ago | (#31443892)

It all depends on how inexpensive it is, and the layout of your home.

In city apartments, this could be absolutely brilliant - one or two rooms, no worries about the 12 apartment units adjacent to you all munging up every available frequency, and 230 megabits of speed. Your signal stays inside your apartment (no leeches), you aren't bothered by nearby networks (less interference), you get over 20% of the speed of gigabit wired Ethernet but without the wires, or somewhere over double the speed of 802.11n.

In a country house with 14 sprawling rooms, no neighbors, and a desire to sit out on the porch with your Netbook? Not so much. WiFi is your best bet.

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