500M Bps Soon in a Copper Line Near You, Ericsson Says
By Mikael Ricknäs and IDG News Service
Next-generation DSL systems will enable bandwidths of more than 500M bits per second by bonding many copper lines and using advanced noise cancellation, Ericsson said on Monday.
The company has performed the world’s first live demonstration, at least according to Ericsson, of vectorized very high bit rate DSL2 at speeds of more than 500M bps. Products using the technology will likely be available by the end of the year, according to Don McCullough, head of product marketing at Ericsson Broadband Networks, who came to Ericsson when it acquired Entrisphere in February 2007.
The key to getting more capacity is having many copper lines at your disposal instead of just one, which traditional DSL has to make due with. The Ericsson demonstration used six copper lines over 500 meters. Vectoring technology is used to cancel out the noise among them by being able to predict where it will occur, allowing for higher rates than what would be naturally possible.
“We have found many places where six copper pairs make a difference, and they are available. On the other hand; in some buildings they aren’t, and in those buildings you have to go with fiber all the way to the resident if you want to provide these applications,” McCullough said.
The introduction of vectoring, and the capacity improvements that comes with it, will help copper stay a viable option to fiber for broadband networks. The question when that will no longer be the case always gets the same answer: a couple of years from now, according to McCullough. Then stuff like this comes along, he said.
But in the end fiber is the option to go with if it’s economically feasible. “Of course, if you can get fiber; you should get fiber,” said McCullough.