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japanesse 4g network

wombough

Sep 17, 2007, 4:43 AM
The Japanese company NTT DoCoMo has been testing a 4G communication system prototype with 4x4 MIMO called VSF-OFCDM at 100 Mbit/s while moving, and 1 Gbit/s while stationary. NTT DoCoMo recently reached 5 Gbit/s with 12x12 MIMO while moving at 10 km/h,[7] and is planning on releasing the first commercial network in 2010.

I hear they are going to do it sooner late 2008 or early 2009.
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nextel18

Sep 17, 2007, 5:53 AM
Nice find on Wikipedia but that is actually old news. Docomo has been doing a lot of testing with all kinds of technologies from VSF-OFCDM and others. I just wanted to note that to achieve those speeds they need to have ideal conditions and actually designate a lot of spectrum per carrier. The most important to the test and announcement, although it is old, that they obtained those speeds while actually moving, which is slow but still moving. That is key.
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wombough

Sep 17, 2007, 8:22 AM
yeah I was talking to a japanesse local and he is seeing speeds of 10mbs around toyko on his handset. So they are way ahead of us in speed with data.
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nextel18

Sep 17, 2007, 8:27 AM
Exactly.
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AttAgentX

Sep 17, 2007, 10:21 AM
At least our military is 20 years advanced compared to there 3 years tech on us!
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wombough

Sep 17, 2007, 10:44 AM
meaning?
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expectpwnage

Sep 17, 2007, 12:01 PM
4g coverage in Tokyo won't help you when a cruise missle is heading at your a$$.
Laughing
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wombough

Sep 17, 2007, 10:23 PM
well check your history. Japan has a very formiable defense force. However since we only have cruise missles and we are bound to defend Japan like it was part of the US I don't think that will happen ever!
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redz

Nov 30, 2007, 8:22 PM
The Japanese are always ahead in technology . period Very Happy
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Scytherend

Oct 24, 2008, 7:34 AM
Reason #234 why people in other countries think we're all narrowminded hilljacks.
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ajlineman

Nov 28, 2008, 5:19 PM
wombough said:
So they are way ahead of us in speed with data.

lol this clears it all up right here... so true
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Hayate392

Dec 6, 2008, 1:39 PM
japan is cellphone capitol anyways....
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StoreLead

Sep 20, 2007, 8:49 PM
that's really impressive! i'd like to see this in action!
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wombough

Sep 21, 2007, 8:19 AM
they already have a very impressive data speed now. anywhere from 3 to 10mbps. If you are were I am in the middle of nowhere then its like 3mbps which is good as I am surprised they even have 3g here. And toyko you see around 10mbps!
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