Click here to find out more!
Reuters.com   About  |  For Reuters professional and media products  |  For Reuters professional and media clients only  |  Careers
Login/Register  | Help & Info
Jump to
YOU ARE HERE: Home > News > Technology & Science > Technology > Article
advertisement
Researchers See Gigabit Data Over Power Lines
Wed Jan 5, 2005 04:23 PM ET
Printer Friendly | Email Article | Reprints | RSS   
Top News
UN Warns Tsunami Death Toll Could Double
Suicide Bombers Kill 21 People in Iraq
U.N. Warns Against Fighting, Tsunami Pledges Rise

WASHINGTON (Reuters) - Engineers at Penn State University said on Wednesday they had found a way for power lines to transmit data to homes at rates far faster than high-speed Internet connections from cable and telephone companies.

Broadband service over power lines has been highly touted by equipment makers and federal regulators as a possible competitor to cable and telephone services that handle nearly all of the 30 million U.S. residential broadband connections.

But despite dozens of trials, few electric utilities have attempted to sell the service to customers, citing cost and technical problems. The Penn State researchers said while the technology would improve, lowering the costs of power-line broadband would remain challenging.

Power-line broadband systems available today typically promise data speeds of roughly one megabit to three megabits per second, similar to cable and digital subscriber line, or DSL, service.

The Penn State engineers, Pouyan Amirshahi and Mohsen Kavehrad, estimated in a research paper released Wednesday that their system could deliver data at close to one gigabit per second over medium-voltage electrical lines in ideal conditions, with speeds of hundreds of megabits per second available to home users.

Their system would uses repeaters placed every one kilometer, (0.62 miles) and requires power lines to have been modified to reduce interference with the data signals. The engineers said their estimates were based on computer models, and that the data speeds available in a real-world version would depend on how many repeaters a power company used.

The Penn State study was funded with a grant from AT&T Corp. (T.N: Quote, Profile, Research) , which has taken part in prior trials of power-line broadband.

© Reuters 2005. All Rights Reserved.

More Technology
Pricey Big Screen TVs Headline Tech Trade Show
Comcast, Delphi to Explore In-Car Video
Researchers See Gigabit Data Over Power Lines
Sirius Video Service Now Planned for 2006
Samsung Launches Wide TVs, Long-Life MP3s


Reuters.com Help & Info. | Contact Us | Feedback | Advertise | Disclaimer | Copyright | Privacy | Corrections | Partner Newspapers