backtop


Print 32 comment(s) - last by skyyspam.. on Oct 29 at 9:41 PM


1Gbps over DSL copper lines may be in our future
Realistic connectivity with DSL will be in the 390Mbps range

Broadband speeds for internet users in America are often woeful in comparison to the speeds found in other countries around the world. The FCC is working hard to get faster broadband connections all around the country, especially to the poor and those that live in rural areas.

Vendors are also working hard to increase the speed of our web connections using existing methods while other firms work on faster speeds with new technology like fiber optic and wireless connectivity. Today, the majority of fixed-line internet is served by copper cables that have been around for decades.

As various vendors that make the hardware that allows broadband over cable wires using DSL technology make technological breakthroughs, the speeds consumers can get are growing. Nokia Siemens recently announced that it could transmit data at up to 825Mbps using copper wires for a distance of 400 meters. Huawei has also announced that it has been able to transmit data at up to 700Mbps over the same distance.

The fastest speeds in tests have been from Alcatel-Lucent with the ability to send data at 910Mbps over 400 meters. These fast speeds are achieved using different methods. One of the methods reports
PC World is VDSL2 (Very high bit-rate digital subscriber Line) that sends data over several copper pairs at one time. The VDSL2 method also uses DSL Phantom Mode to create a third virtual copper pair to send more data over along with the two copper pairs.

Phantom Mode reportedly causes crosstalk that the vendor then has to eliminate using noise canceling tech very similar to the tech used by noise canceling headphones. The tech monitors noise on the copper pairs continuously and generates its own signal to cancel the noise out. The vendors getting some of the highest speeds are using copper wire with four pairs inside, but that wiring is not readily available making the dual pair approach more realistic. 

Sending data across two copper pairs is good for data speeds up to 390Mbps over 400 meters and vectoring can increase that distance to 1,000 meters. Products using these new techniques are starting field trials with providers now and should be in the commercial space for consumers next year.

Fiber optic web connections are already available at 1Gbps speeds in some areas.



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

With AT&T but....
By ICBM on 10/27/2010 1:22:18 PM , Rating: 2
We have a 6Mbps line from AT&T and it has been incredibly stable for years. We are in a small town, and we had to fight to get DSL here in the first place. For the new tech to ever filter down to smaller towns looks bleak. Small and rural towns just don't interest telcos at all. Heck we are lucky to even have regular DSL, as most of the towns around us don't have that. BTW cable modem is not even an option, as everyone is using satellite for tv. Our cable company doesn't offer digital cable, and has been offering the same 36 channels for the past 20 years.

I thought our best bet would be using 3G or 4G, however that is a joke as well. Verizon and Sprint offer 3G everywhere, and I was hoping 4G would be similar. However apparently the 4G plans seem to mimic AT&T's 3G of only offering it bigger cities. Our AT&T coverage is 2G only here still. So we are stuck in the same boat, wired or wireless.

I am grateful for our 6Mbps, but don't have any hopes of faster speeds in the next 10 years.




RE: With AT&T but....
By ICBM on 10/27/2010 1:24:38 PM , Rating: 2
Oh I forgot to mention, to even get the 6Mbps plan was an enormous pain. I ended up having to talk to the vice president of the region to have them validate the proper wire distance we were from the CO. Their validation sucks, and they have shrunk the coverage, so only the center of town is even able to get a meager 768kbps.


RE: With AT&T but....
By gfredsen on 10/27/2010 7:36:21 PM , Rating: 2
Geez, I was going to post, but ICBM said it all for me, just substitute Embarq Century Link for AT&T..though Century Link continues to provide good service at 5megs. It just took half a dozen tech visits over two years.


"If you look at the last five years, if you look at what major innovations have occurred in computing technology, every single one of them came from AMD. Not a single innovation came from Intel." -- AMD CEO Hector Ruiz in 2007

Related Articles













botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki