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About PLC(Power Line
Communications)
Phrases like
"Invisible Wiring Communication" and "No New Wire
Communication" refer to Power Line Communication (PLC). PLC utilizes infrastructure present
almost everywhere, both in the indoor and outdoor environments, eliminating
the unnecessary expense and inconvenience of new wires or antenna-based
networks.
While many have
attempted to use the power line as a communication medium in the past, it
has not lived up to expectations, earning a reputation for questionable
reliability. The fact is that the power line is an extremely difficult and
noisy communications medium, characterized by several unpredictable and
strong forms of interference. Every appliance that is connected to an
outlet contributes line interference, which can be approximated as Additive
White Gaussian Noise (AWGN). Dimmer switches, motorized electrical
appliances and computers, also introduce pulse interference into the
communications environment, making it a perilous channel for non-robust
communications. Fast fading also corrupts power line communicationd
channels, which have non-flat frequency responses and suffer from
unpredictable jamming and the presence of carrier wave signal interference.
All the forgoing make it exceedingly difficult to ensure reliable power
line communication and help explain the difficulties technologies have had
in delivering reliable power line communication.
Reliable, low cost
Power Line Communication (“PLC”)
technology enables ubiquitous narrowband and broadband
applications for the residential and business markets. PLC opens a whole
new world of business opportunities to appliance and electric devices
manufacturers, utilities and service providers, with no need to run and
install new cables or jacks. Every electrical outlet is now a communication
node, part of a PLC network.
Power line
communication and networking provides the benefits of having a wired
connection while maintaining the flexibility of ubiquitous connection.
Yitran’s patented and patent pending
solutions to the problems of power line communication overcome the
interference and reliability problems that plague the power line and offer
superior performance over this harsh medium.
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