12.5. AC Power Wiring-Based Home Networks
Local communication using the power wiring within a premises has seen widespread use in homes and business since 1978 for low-speed signals to control lights, HVAC (heating, ventilation, air conditioning), and appliances. New systems are now addressing power line LANs at much higher data rates. Premises LANs using inside power wires are distinct from WANs using the public power line grid to communicate data between homes and a public data network. Whereas power line communications with a premises have proved to be reliable (at least a lower bit rates), the feasibility of WANs using outside power lines to communicate more than a few kb/s are in doubt due to electromagnetic interference (EMI), and network ...
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