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Author Topic: Gigabit Wireless Ethernet  (Read 3103 times)

  • Offline Sara

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Gigabit Wireless Ethernet
on: April 01, 2006, 23:32:00 PM
Did this ever come to fruition? Theres lot of talk about it in early 2004 - but nothing since, it seems. Did they give up?
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  • Offline BigSoy

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Re:Gigabit Ethernet
Reply #1 on: April 01, 2006, 23:43:34 PM
Unless Im having an utter brain-lapse here, yep, its out there being used right now and has been for a good while. Current applications mostly in the network backbone sphere rather than to-desktop pipes, although gigabit desktop kit is available if you so desire.
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  • Offline Sara

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Re:Gigabit Ethernet
Reply #2 on: April 02, 2006, 00:04:34 AM
Argh, Im being totally thick... Hang on...

Edit, should have been "wireless" in there somewhere :)
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  • Offline Serious

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Re:Gigabit Wireless Ethernet
Reply #3 on: April 02, 2006, 01:57:44 AM
Wireless networks are still at about 108megabits maximum dispite attempts to create faster systems. IIRC the main problem is the faster you send data the more interviening obstacles cause signal degridation.
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  • Offline Tongy

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Gigabit Wireless Ethernet
Reply #4 on: April 02, 2006, 09:18:55 AM
Netgear do a 240mbps system and USR and Buffalo do 125mbps.

108 is a standard though. Gigabit wireless is a way off I reckon. They need to make sure that the encryption CANNOT be cracked... I hear that WPA2 is about good enough.

Cheers
Tongy
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Re:Gigabit Wireless Ethernet
Reply #5 on: April 02, 2006, 09:27:21 AM
Whats the throughput on the latest MIMO gear??
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  • Offline BigSoy

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Re:Gigabit Wireless Ethernet
Reply #6 on: April 02, 2006, 12:17:38 PM
Quote from: Serious
Wireless networks are still at about 108megabits maximum dispite attempts to create faster systems. IIRC the main problem is the faster you send data the more interviening obstacles cause signal degridation.


Any more info on that?
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  • Offline Sara

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Re:Gigabit Wireless Ethernet
Reply #7 on: April 02, 2006, 12:52:03 PM
Quote from: BigSoy
Quote from: Serious
Wireless networks are still at about 108megabits maximum dispite attempts to create faster systems. IIRC the main problem is the faster you send data the more interviening obstacles cause signal degridation.


Any more info on that?

Yeah - intrigued. I guess also the higher the frequency, the less easy it is to penetrate obstacles in its way? Not that Im writing a report on this stuff of anything...

(we need an eyes-to-the-sky whistling smiley, wasnt me guv...)
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  • Offline BigSoy

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Re:Gigabit Wireless Ethernet
Reply #8 on: April 02, 2006, 13:21:45 PM
Quote from: Sara
Quote from: BigSoy
Quote from: Serious
Wireless networks are still at about 108megabits maximum dispite attempts to create faster systems. IIRC the main problem is the faster you send data the more interviening obstacles cause signal degridation.


Any more info on that?

Yeah - intrigued. I guess also the higher the frequency, the less easy it is to penetrate obstacles in its way? Not that Im writing a report on this stuff of anything...

(we need an eyes-to-the-sky whistling smiley, wasnt me guv...)


Mmm, would be useful if I could remember more physics I suppose, but Im not sure the frequency of the signal is directly proportionate to the amount of data you send, I guess the frequency has to go up to encode more data, but not in direct proportion.

Could be wrong though, would be interesting to read more.

My guess is that the current speeds are something to do with the amount of packet loss that ethernet can sustain while maintaining whatever quoted speeds, so even if you could send more data, if you cant cope with the packet loss youre a bit screwed.
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"Within your 'purview'? Where do you think you are, some f**king regency costume drama? This is a government department, not some f**king Jane f**king Austen novel!"
Re:Gigabit Wireless Ethernet
Reply #9 on: April 02, 2006, 13:21:56 PM
That said if your looking for high speed wireless, have you thought about laser systems? Our university uses it to maintain inter-building links. They are highly directional and line of sight, however they dont tend to be affected by weather, atmospheric conditions, and are high speed. Heck its just light. :D (Not sure on the speed its just something Ive come across in my uni).
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  • Offline Beaker

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Re:Gigabit Wireless Ethernet
Reply #10 on: April 02, 2006, 20:17:52 PM
Quote from: M3ta7h3ad
That said if your looking for high speed wireless, have you thought about laser systems? Our university uses it to maintain inter-building links. They are highly directional and line of sight, however they dont tend to be affected by weather, atmospheric conditions, and are high speed. Heck its just light. :D (Not sure on the speed its just something Ive come across in my uni).


yeah,out uni used ot use those, and when it rained the windows used to mist up, resulting in no-connection errors.  BUt as you said, they are _highly_ directional anyway.  For wide-area 11x wireless they still havent broken the 125Mb cap IIRC, even then you still have issues with atmospherics and interference, plus when it gets to a large area security becomes a real bitch.

For longer point-to-point Microwave transmitter/reciever dishes are the way to go if i remember my lectures correctly.  
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  • Offline Serious

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Re:Gigabit Wireless Ethernet
Reply #11 on: April 02, 2006, 22:12:31 PM
Quote from: Sara
Quote from: BigSoy
Quote from: Serious
Wireless networks are still at about 108megabits maximum dispite attempts to create faster systems. IIRC the main problem is the faster you send data the more interviening obstacles cause signal degridation.


Any more info on that?

Yeah - intrigued. I guess also the higher the frequency, the less easy it is to penetrate obstacles in its way? Not that Im writing a report on this stuff of anything...

(we need an eyes-to-the-sky whistling smiley, wasnt me guv...)


It was an article in a mag I was reading in the libuary basically saying what Sara has, the present frequencies arent getting anywhere near the throughput they should and pushing them up means more energy needed per wave and reduces penitration through materials. It also means more power used and heat generated.

A 54mbps system will put through about 18mbps while a 108 or 125mbps system will give you 22 to 24mbps, a bit more but not significantly so compared to double the theoretical maximum.

ADSL has the same kind of problem, the longer the cable connection the less data you can push through it and the higher the frequency the shorter distance you can send it.

There were also reports of wi-fi affecting mobile phones, microwave ovens and military radar?

http://www.usatoday.com/tech/news/2005-01-28-wifi-vs-afb_x.htm
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  • Offline Sara

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Gigabit Wireless Ethernet
Reply #12 on: April 02, 2006, 22:27:31 PM
Thanks Serious, useful info...
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