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Topic: Broadband over Power Lines

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	Power line communication - Wikipedia, the free encyclopedia
		Typically home-control power line communications devices operate by modulating in a carrier wave of between 20 and 200 kHz into the household wiring at the transmitter.
		Broadband over power lines (BPL), also known as power-line internet or Powerband, is the use of PLC technology to provide broadband Internet access through ordinary power lines.
		Power lines are unshielded and will act as transmitters for the signals they carry, and have the potential to completely wipe out the usefulness of the 10 to 30 MHz range for shortwave communications purposes.
	en.wikipedia.org /wiki/Broadband_over_Power_Lines (4312 words)

	illumin : article : Broadband over Power Lines
		In power plants across the United States, three-phase AC (alternating current) power is generated at 60 Hz.
		After generation, the power leaves the plant and travels a short distance to a transmission substation where the voltage component of the power is increased to anywhere from 36 to 300 kV to reduce the current, thereby reducing overall loss in the power lines.
		At the power substation, the voltage is stepped down by transformers to a voltage in the range of 1 to 36 kV and also "split" by buses to be delivered along multiple MV (medium voltage) lines into cities and towns.
	illumin.usc.edu /article.php?articleID=125 (519 words)

	Broadband over Power Lines (BPL)
		Consequently, data is typically transmitted over fibre optic cables for the length of the high-voltage lines, before being converted to electrical signals and being added to the medium-voltage or low-voltage lines.
		The power lines would need repeaters to maintain signal integrity [1] and since the data signal cannot pass through transformers (in which case it would be lost), they must be bypassed.
		Power company Scottish Hydro Electric is currently offering BPL in three towns for £35.99 and £29.99 per month for 1 Mbps and 512 kbps connections respectively [19].
	ntrg.cs.tcd.ie /undergrad/4ba2.05/group13 (2273 words)

	FCC To Probe Broadband Delivery Over Power Lines - Technology News by TechWeb
		The "broadband over power line" review will look at ways to provide consumers with access to broadband services from any room in a house without adding or paying for additional connections.
		Broadband over power lines "may be able to provide an additional means for 'last-mile' delivery of broadband services and may offer a competitive alternative to digital subscriber line and cable modem services," the FCC said.
		Two types of broadband delivery would be covered in the FCC review: "access," which uses medium voltage (1,000 to 40,000 volts) power lines to deliver Internet and broadband services to homes and offices; and "in-house," which would use existing utility wiring to link computers and printers in local-area networks.
	www.techweb.com /wire/story/TWB20030424S0002 (387 words)

	Birds-Eye.Net Broadband Over Power Lines (BPL)
		Broadband over Power Lines (BPL) was just a pipe dream only a few short years ago, but during the past year has made enormous strides in moving beyond lab trials and technical trials and into production rollouts.
		Having ISPs take over the management of offering Internet as a “service” on BPL allows electric utilities to focus on core competencies, such as building-out and servicing power lines rather than worrying about constructing data centers, hiring specialized technical staff, or negotiating peering agreements.
		Providing broadband services that are ubiquitous presents some interesting challenges for BPL because its end users will roam around within the system (take their BPL or wireless enabled laptops to the library, parks, work, home, public meetings).
	www.birds-eye.net /article_archive/broadband_over_power_lines_bpl.htm (2208 words)

	Broadband Over Power Lines - Technology - Network Computing
		Even better, Broadband over Power Line (BPL) promises to use the existing electricity infrastructure, which is already more ubiquitous than anything the telecom or computer industries could ever hope to achieve.
		The problem is that sending broadband data over high-voltage overhead wires can turn the electric grid into a giant radio transmitter, and one tuned to the particularly valuable shortwave band.
		Power companies first tested it for their own control applications 50 years ago, and baby monitors have been built around analog versions of the same technology since the 1960s.
	www.networkcomputing.com /channels/networkinfrastructure/160401689 (2495 words)

	Broadband over Power Lines
		For years now some power companies have been using communication signals over the power lines to 'talk' to things such as substations and transformers and even your home electric service meter.
		In the case of Broadband over Power Lines (BPL) [Power Line Communications PLC in Europe] the radio waves carry the Net signal through the power system to be picked up by a filter on the customer premises.
		The frequencies used to transmit broadband over the power lines is right in the middle of the HF spectrum up to the low VHF frequencies.
	www.themediadesk.com /newfiles/bpl.htm (1279 words)

	Broadband Over Power Lines Gets Attention - Connected Home News - Digital Trends
		Every power outlet in your house could be a portal to the internet using broadband power line technology.
		The ability to send high-speed digital data over the power lines between substations and homes and offices is attracting increasing attention because it can make every wall outlet a portal to the Internet.
		Power companies face a number of issues in doing this, for example, how to assess the performance and safety of repeaters/routers, medium- and low-voltage coupling hardware, and other equipment before buying.
	news.digitaltrends.com /article4771.html (542 words)

	Technology Review: An Update: Broadband over Power Lines
		Broadband over power line, or BPL, is in danger of becoming an also-ran in the race to bring broadband Internet to the American home, even as it's overcoming some of its technical hurdles.
		BPL hasn't lived up to its early promise as a rural broadband alternative, either, because of a technical quirk that is also the source of the ham radio frustrations.
		For broadband, a radio-frequency signal is applied to the power line, much like a high-frequency signal is applied to telephone copper wires to create a digital subscriber line, or DSL.
	www.technologyreview.com /TR/wtr_16614,323,p1.html (791 words)

	CommsDesign - FCC adopts rules for broadband over power lines
		The action is designed to both foster broadband penetration and increase competition while enhancing management of the national power grid.
		As a result of the ruling, power utilities can now provide broadband to their customers, competing with traditional last-mile-access schemes such as DSL and cable as well as newer options such as meshed Wi-Fi networks and upcoming WiMax deployments.
		In addition, the distribution of broadband to home would be simplified since users need only a single device plugged into a socket to obtain broadband access.
	www.commsdesign.com /showArticle.jhtml?articleID=49901747 (493 words)

	VON Magazine :: January 2005 :: Broadband over Power Lines, by Jim Barthold. (Site not responding. Last check: 2007-10-04)
		Broadband over Power Line (BPL) technology, which has hardly been static for the past several years, will turn up the juice in 2005 and start delivering high-speed data and voice services over low and medium voltage electrical wires.
		Various methods have been developed to jump broadband data from the medium voltage lines running through utility wires onto low voltage lines entering and traversing the premise.
		The vendors might be on their way; the customers who will provide networks on which their technology runs, however, are utilities and "they take their time in terms of making decisions and they're very careful and methodical about evaluating technology," Pristas says.
	www.vonmag.com /issue/2005/jan/features/broadband_over_power_lines.asp (1974 words)

	Broadband Over Power Lines
		Power line communications (PLC), or Broadband over Power Line (BPL) -- the practice goes by either name -- uses an RF signal sent over medium- and low-voltage AC power lines to allow end users to connect to the internet.
		By "medium- and low voltage," the power companies mean the residential power lines that deliver AC power from the nearest substation at about 7,200 VAC, and the 220 VAC that is usually available at the service entrance to a home or small business.
		Some power line equipment in my semi-rural area was installed during the Rural Electrification Act era of the 1930s.It has been allowed to operate with minimal maintenance, except for repair of catastrophic failures and storm damage.
	www.antennex.com /shack/Aug03/plc.htm (739 words)

	Addressing the Digital Divide with IPv6-enabled Broadband Power Line Communications - ISOC Member Briefing #13
		Power Line Communications has been around since the 1930's but was never seriously thought of as a medium for communication due to its low speed, low functionality and high deployment cost.
		The use of PLC technology as an access technology to deliver broadband capabilities has several key benefits, mainly related to the fact that power wires are already installed in any location where information could be delivered.
		Broadband PLC with IPv6 and QoS could provide the means for new service providers (electricity suppliers) to enter a difficult market, increasing the user perception of the "quality of the service" and either increasing competition or saving the massive cost of dedicated communications cabling.
	www.isoc.org /briefings/013 (2216 words)

	Wired News: Broadband Over Power Lines?
		While existing providers of broadband through cable TV lines or phone wires consider the technology intriguing, they stress that talk of it has been around for years, with nothing to show for it.
		Existing broadband providers such as St. Louis-based Charter Communications, the nation's third-largest cable company, believe they have the edge because they are known commodities and can bundle high-speed Internet with video and even telephone service in some markets.
		Digital power lines are believed to be able to carry data at roughly the same speeds as cable or DSL lines.
	www.wired.com /news/technology/0,1282,57605,00.html (1026 words)

	Broadband over Power Lines: Challenging existing broadband dynamics
		Broadband over Power Lines, also known as the "third wire" for delivering broadband communications to users, has been gaining traction on a global basis.
		The ubiquity of electric power lines as the means of providing access to the Internet is of particular benefit in rural areas, where the biggest promise lies for BPL.
		But visiongain warns that unless governments are willing to subsidise the substantial infrastructure costs required to enable a BPL system, the technology of providing broadband access over power lines may not be economically viable in these areas.
	www.electronics.ca /reports/global/bpl.html (617 words)

	Broadband over Power Lines (Site not responding. Last check: 2007-10-04)
		In my August 12 column, I discussed a new technology for sending data at high speeds over long distances: BPL, or broadband over power lines.
		Unlike cable system whose wires are 'covered' with shielding, power lines are 'bare antennas'.
		Those days are over, heathkit is gone, and there are only a very few kit companies still around.
	www.kantor.com /usatoday/broadband_over_power_lines.shtml (463 words)

	Texas to get broadband over its power lines \| Tech News on ZDNet
		The broadband network will be laid on top of the existing power infrastructure, and TXU will then lease this infrastructure to broadband providers such as Current.
		The emergence of BPL as a viable alternative to DSL and cable modem service comes at a time when the nation's cable operators and phone companies are spending billions of dollars to upgrade their networks.
		The battle for control of the broadband pipe into the home has intensified: telephone companies are moving into the TV business, and cable operators are offering voice service.
	news.zdnet.com /2100-1035_22-5995234.html (737 words)

	CommsDesign - FCC to probe broadband delivery over power lines
		WASHINGTON — The Federal Communications Commission said Wednesday (April 23) it is opening an inquiry into the feasibility of supplying broadband network access over power lines.
		The review is part of an FCC effort to promote spectrum flexibility as well as multiple platforms for the delivery of Internet and broadband services to homes and offices.
		"The availability of faster chip sets and the development of sophisticated modulation techniques have produced new digital power line designs that use multiple carriers, spread over a wide frequency range—2 to 80 MHz—and are capable of high data rates," the agency said in a statement.
	www.commsdesign.com /story/OEG20030423S0042 (485 words)

	Broadband Horizons - Broadband Over Power Lines and Wireless Networks
		Broadband Horizons offers a full spectrum of ISP support services from initial service inquiries, order processing, configuration, installation, and ongoing technical and user support, etc. Our range of services include: Initial configuration and ongoing support for your customers.
		Broadband Horizons can provide the capital investment or arrange capital for Municipalities and Utilities for engineering and construction of BPL networks and communications infrastructure.
		DSL lines increased from 5.1million to 7.7 million lines Cable Modem lines 9.2 million to 13.7 million lines Over 60% of Americans do not have a broadband connections The Internet is rapidly moving in a direction that will make high-speed connections critical to business success.
	www.broadbandhorizons.com /index.htm (1346 words)

	BPL (Broadband over power lines)
		BPL refers to technologies for using power lines to deliver broadband services, in particular in remote rural areas not served by DSL or cable-modem services.
		Because new digital power line designs use a large frequency range (between 2 and 80 MHz), unlike most radio frequency devices, the FCC wants assurances BPL would not interfere with existing home electronic devices, such as garage-door openers.
		Power lines are not because they are unbalanced, unshielded, and usally very large antennas.
	www.networkworld.com /details/6121.html (1365 words)

	Broadband over power lines closer to reality - Network World
		And it's not alone: power line communication (PLC) is being tested in a dozen states in field trials conducted by utilities such as Pepco in Washington, D.C., Ameren in St. Louis and Pennsylvania Power and Light.
		For example, to transmit data along noisy electric lines, the signals had to be turned up so high that it interfered with emissions from other devices such as radios and military equipment.
		As a result, PLC - or broadband over power line, as the FCC refers to it - is getting more attention as a possible third pipe to deliver broadband access to homes and businesses.
	www.networkworld.com /news/2003/0602carrspecialfocus.html (1360 words)

	The Future of Broadband
		BPL is basically the use of your existing power lines to deliver high speed broadband and other data services.
		What providers hope to achieve is broadband so convenient, all you have to do is plug a BPL modem into any power socket, and you instantly have a high speed connection which, on paper, sounds almost too good to be true.
		BPL, on the other hand, works over the existing power lines that feed electricity to every house and business (according to providers), so there is no need to lay new infrastructure.
	www.ugo.com /channels/tech/features/futureofbroadband/bpl.asp (756 words)

	Trial runs broadband over power lines - ZDNet UK
		The Internet signals are sent at high frequencies over the mains wires: as mains power is very low frequency the two can coexist on the same line without interference.
		Power lines are also an attractive broadband delivery system, because they are already in place and reach more homes than either cable systems or telephone lines.
		The power lines act as aerials and transmit the data signals as radio, interfering with services already allocated the same frequency bands under international treaty.
	news.zdnet.co.uk /communications/0,1000000085,39160545,00.htm (618 words)

	Cincinnati plugs into broadband over power lines. - By David S. Bennahum - Slate Magazine
		Known as "broadband over power lines," or BPL, the service is currently available to 16,000 homes in Cincinnati.
		The first is that power lines are designed not to interfere with other electromagnetic signals, such as radio and television.
		Correction, March 26, 2004: The original version of this article stated that broadband Internet services that have different upload and download speeds were "asynchronous," rather than the correct term, "asymmetrical." Also, it stated that all cable and DSL connections are asymmetrical.
	www.slate.com /id/2097131 (1282 words)

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