| Ericsson’s 500 Megabit DSL |
| Written by Dave Burstein |
It’s a proof of concept rather than production equipment, but the six lines of VDSL made one heck of a demonstration. While VDSL lines can offer 100 megabits each, no one has demonstrated so many bonded together. While companies like Aktino cancel noise for increased performa nce, no one has come close to these speeds. While few wireless towers need hundreds of megabits today, 4G is shipping. That makes backhaul crucial to the mobile carriers, especially in cities where laying fiber is brutally expensive and wireless line of site not always available. The 500 meters of this demonstration isn’t enough to reach most cell towers, but similar vectorized DSL can deliver important speed up to two or three kilometers. The next step includes developing silicon that can perform the intense calculations fast enough. Aktino uses three FPGAs while running at a quarter of the speed. Swedish company UpZide ran out of funding before they could produce a dedicated DSM chip, one of the many casualties of the cutback in tech research and investment. Rajesh Chundury of Ericsson is joining Imran Hajimusa of Infineon and four DSL competitors at the CTIA/IEC wireless show Thursday. http://www.bbwfunwired.com/schedule/E3.asp |
