LiFi: Wireless At Light Speed Comes With Drawbacks - InformationWeek

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LiFi: Wireless At Light Speed Comes With Drawbacks
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moarsauce123
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moarsauce123,
User Rank: Ninja
12/5/2015 | 8:33:43 AM
Good for noisy areas
Yes, line of sight is an issue, but I wonder if the LEDs can be coupled with fiber which will allow the light to go around a curve and through walls (well, same as a cable). A huge beneift of LiFi will be that it is not impacted by any RF noise as it is often encountered in production settings. Line of sight might not be an issue on the shop floor.
shakeeb
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shakeeb,
User Rank: Ninja
11/30/2015 | 9:35:17 PM
Re: Excellent first try. Go again.
It's good to see we are looking beyond the radio signals. I am wondering if someone could hold a flashlight and disrupt the connection to bring a network down. If so do we have any ways to avoid that?
shakeeb
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shakeeb,
User Rank: Ninja
11/30/2015 | 9:32:40 PM
Re: Long distance
@tzubair – Think this is also good for point to point out door network. You could use a laser beam to project the light signals over 5miles. Some lasers have the strength of reaching about 50km. 
tzubair
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tzubair,
User Rank: Ninja
11/30/2015 | 9:30:37 PM
Re: Power Required?
"I wonder how much power will be required at the remote devices, as opposed to the hub? If it is very low, it might be useful for some Internet of things applications, where small size and low power are critical"

@Gary: I am not sure about the exact power requirements, but given the technological details, it seems less power-consuming to me. The reason being the fact that the medium is using LED lights for transmission which is generally an efficient medium.
shakeeb
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shakeeb,
User Rank: Ninja
11/30/2015 | 9:30:07 PM
Re: Power Required?
@Gray_EL - I think the LEDs would consume very less power, they could also use a lens to improve the strength and distance of the beam.
shakeeb
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shakeeb,
User Rank: Ninja
11/30/2015 | 9:28:23 PM
Re: Power Required?
It's an amazing technology to wirelessly transfer at high speed. Hope they come out of the point to point barrier. 
tzubair
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tzubair,
User Rank: Ninja
11/30/2015 | 9:26:04 PM
Re: Excellent first try. Go again.
"This is an impressive development. I hope to see better results in future iterations -- if it's even possible. LiFi is a very interesting concept taken on its own."

@Michelle: Interesting it indeed is. Particularly, there can be so many applications of it in the area of IoT. Recerntly, all IoT related development is taking place via Bluetooth or WiFi but to have an alternate medium in the same setting can be a very useful development.

 
tzubair
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tzubair,
User Rank: Ninja
11/30/2015 | 9:24:19 PM
Long distance
I think LiFi is a useful technology when it comes to indoor transmission, but from a broader perspective, speed is an issue over the outdoor side and not so much on the indoor side. Currently, getting high-speed broadband speed via cable or wirless into a house or a building is the bottleneck. WiFi itself has speed up to 50 Mbps which is not being fully utilized at most places. So while LiFi will offer a better indoor transmission speed, I wonder how useful will that be in enhancing the overall browsing speed.
Michelle
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Michelle,
User Rank: Ninja
11/30/2015 | 4:03:03 PM
Excellent first try. Go again.
This is an impressive development. I hope to see better results in future iterations -- if it's even possible. LiFi is a very interesting concept taken on its own.
Gary_EL
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50%
Gary_EL,
User Rank: Ninja
11/30/2015 | 2:53:06 PM
Power Required?
I wonder how much power will be required at the remote devices, as opposed to the hub? If it is very low, it might be useful for some Internet of things applications, where small size and low power are critical.


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