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Mobile Broadband to Hit 42Mb/sec In 2009
Barence writes "Mobile broadband speeds could hit a blistering 42Mb/sec as early as next year, according to Ericsson's chief technology officer. The idea seems far-fetched given that even the fastest dongles currently hover at around 7.2Mb/sec, but the technology to smash that barrier is thought to be just around the corner. One of the methods is very similar to the MIMO technology already used in draft-N wireless routers, but Ericsson believes a combination of factors may even squeeze that figure to 80Mb/sec in the longer term."
42 Mb/sec.... standing next to the tower.
Everywhere else, a tenth of that or less.
ha ha
I guess Your DONGLE isn't long enough.
A Good Troll is better than a Bad Human.
More information about it is found here:
http://en.wikipedia.org/wiki/3GPP_Long_Term_Evolution
The article doesn't mention a lot of facts and it also fails to mention that speeds upto 100 Mbit/s is the goal for LTE. So this will be the next step in broadband services over wireless mobile networks.
As the average connection speed has gotten faster, the average webpage has gotten more and more bloated to use up that faster connection.
Spelling and Grammar errors have been added to this post for your enjoyment
As someone who works in the field of wireless cellular physical layer (MIMO, FEC, etc.) I would offer a bit of a reality check. As a rule of thumb in a wireless mobile environment with large cells even with MIMO, LDPC or Turbo coding, advanced QAM modulation, etc one should not expect spectral efficiency more than 4 bits/second/Hertz for an average user. And even this number is optimistic and assumes low mobility speeds and low interference.
For a 40MHz full-duplex channel (half the resources in uplink, half in downlink) one would optimistically expect 80Mbits/sec per cell downlink or uplink. This capacity will be shared amoung all the users served by the cell. If, as a user, you get 8Mbits/second sustained throughput, consider yourself lucky.
HSDPA 3G is the technology we have now that's 7.2 Mbps. It has a interface latency of 150 ms round trip.
HSPA+ is the technology coming out in 2009 that this article is talking about which has a downstream capacity of 44 Mbps, and I think they're trimming the latency down to about 90ms round trip.
LTE is the next gen technology launching in 2010 and it will go 85 Mbps downstream on 2xMIMO using 10 MHz of frequency. It can go 300+ Mbps using 20 MHz 4xMIMO. They're getting the air interface latency down to 20 ms round trip which is getting really good and it's only 10 ms higher latency than wired DSL. It all depends on your application requirements. If you only care about VoIP and online gaming, you don't even need 100 Kbps and all you want is the lowest ping times. You only need the burst speed for web surfing and downloading new maps, etc.
It's what we called the internet before we started using trucks.
Station-Wagon"
Sneakernet:
http://en.wikipedia.org/wiki/Sneakernet
In 2006 the largest backup tape available is the DLT-S4, with a capacity of 800GB. If a tape of this capacity were sent by overnight mail and were to arrive around 20 hours after it was sent, the effective data rate would be 89 Mb/s.
14.4 Mbps is already live in Australia nationwide on Telstra's NextG network. Telstra demonstrated 21 Mbps at their investor day in November and have committed to the market to have it available across the network early 2009. This isn't roadmap its real. Check their website and view the demo which was performed on the investor day.
Roadmap they promised the market was to have 42 Mbps in 12 months time.
If they don't meet these commitments the market will hammer them and that's not roadmap either, that's real.
Shannon's limit states that you can't go faster than 1-7 bits/sec/Hz, but that applies to a single spatial stream. If you have 4 spatial streams with good multipath, then it is possible to go 4 times faster. This is why LTE 4xMIMO with a 20 MHz channel can go past 300 Mbps which is 15 bits/sec/Hz.