Japan plays catch-up in high-speed PLC,..
Nine high-speed Internet trials
have recently started in Japan using power lines for
transmission at between 2 MHz and 30 MHz. The trials
will finish at the end of March 2005 and are likely
to lead to the Ministry of Public Management, Home
Affairs, Posts and Telecommunications (MPHPT) permitting
commercial services as early as 2006.
The move comes after the MPHPT modified
its regulatory ordinances in January to permit high-speed
power-line communications
(PLC) experiments following
a study released last August that concluded that "it
is likely that power-line communications equipment will
become a source of harmful interference with radio communications
including air traffic control and short-wave broadcasting."
The main purpose of the trials, which
include both in-building and outdoor access systems,
is simply to demonstrate that the radio interference
problems have been solved....
