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broadband over power lines
Broadband over power lines (BPL) is a method of power line communication that allows relatively high-speed digital data transmission over the public electric power distribution wiring. BPL uses higher frequencies, a wider frequency range and different technologies from other forms of power-line communications to provide high-rate communication over longer distances. BPL uses frequencies which are part of the radio spectrum allocated to over-the-air communication services therefore the prevention of interference to, and from, these services is a very important factor in designing BPL systems.
== Standards ==
Two BPL standards are:
* The IEEE 1901 standard is usable by all classes of BPL devices, including BPL devices used for the first-mile/last-mile connection (<1500m to the premise) as well as in buildings for LANs, Smart Energy applications, transportation platforms (vehicle) applications, and other data distribution (<100m between devices).
* The G.hn (Gigabit Home Networking) standards maintained by the ITU-T define networking over power lines, phone lines and coaxial cables for home networking applications 〔(【引用サイトリンク】title=Homegrid - About )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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