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Power line data transmission capacity: Bigger than DSL or cable

January 5, 2005

Penn State engineers have developed a new model for high-speed broadband transmissions over U.S. overhead electric power lines and estimate that, at full data rate handling capacity, the lines can provide bit rates that far exceed DSL or cable over similar spans. Dr. Mohsen Kavehrad, the W. L. Weiss professor of electrical engineering and director of the Center for Information and Communications Technology Research, led the investigation. He says, "Although broadband power line (BPL) service trials are now underway on a limited basis in some locations in the U.S., these trials run at DSL- comparable rates of 2 or 3 megabits per second.

Dolphin-like laser 'chirps' could boost outdoor optical wireless performance

October 27, 2004

Multi-rate, ultra-short laser pulses -- with wave forms shaped like dolphin chirps -- offer a new approach to help optical wireless signals penetrate clouds, fog and other adverse weather conditions, say Penn State engineers. The new approach could help bring optical bandwidth, capable of carrying huge amounts of information, to applications ranging from wireless communication between air and ground vehicles on the battlefield to short links between college campus buildings to metropolitan area networks that connect all the buildings in a city.



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