Broadband over power lines


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Broadband over power lines

  1. 1.     It’s an emerging technology. The newest heavy hitter in the competitive world of broadband service. It offers high-speed access. Broadband over Power Lines (BPL) is also known as Power line communication , power line carrier (PLC),Power line Digital Subscriber Line (PDSL), mains communication, power line telecom (PLT), power line networking (PLN).
  2. 2.  Digital Subscriber Line(DSL)  Fiber Technologies  Coaxial Cable  Wireless
  3. 3. Coaxial cable: Cable tv get a high speed connection to the internet. Performance does not depend on distance from central cable office. Disadvantage of sharing the bandwidth involved in it. Wireless: Send and receive data from any location within signal reach of an access point.
  4. 4. Broadband over Power Line (BPL) is a technology that allows voice and Internet data to be transmitted over utility power lines.  It is an access solution that transmits data over electricity wiring. 
  5. 5.  In-House BPL : Electrical wiring is to network computers and devices within in a buildings.  Access BPL : It is a technology that provides broadband access over medium voltage power lines.
  6. 6.  The idea is not new.  Electric companies have used this technology for years to monitor the performance of power grids.  The transmission speed was slow.
  7. 7. Most BPL systems are designed to operate in the frequency spectrum from 1.705 to 30 MHz, but occasionally up to 80 MHz, using MV and LV power distribution network lines.
  8. 8. POWERLINE INFRASTRUCTURE In addition to lines, power grids use generators substations transformers and other distributors that carry electricity from the power plant all the way to a plug in the wall.
  9. 9. Access BPL equipment consists of:  Injectors: BPL signals may be injected onto MV power lines with the injectors.  Extractors: Provide interface between the medium power lines & the customers.BPL extractors are usually located at each LV distribution transformer feeding a group of homes  Repeaters: For long runs of MV power lines, repeaters are employed to maintain the required signal strength.
  10. 10. BPL SYSTEM
  11. 11.  The last mile is the final step that carries Internet into the subscriber's home or office.  In the various approaches to last-mile solutions for BPL, some companies carry the signal in with the electricity on the power line, while others put wireless links on the poles and send the data wirelessly into homes.
  13. 13. BPL MODEM The signal is received by a power line modem that plugs into the wall. BPL modems use silicon chipsets specially designed to handle the work load of pulling data out of an electric current. BPL modem has roughly the size of a common power adapter.  It plugs into a common wall socket, and an Ethernet cable running to your computer finishes the connection
  14. 14.  High Speed Internet Access to Rural areas as well.  Upload speed that’s as fast as your download speed  Flexible of modification  Simplicity of installation
  15. 15.  There would be no need to build a new infrastructure. Anywhere there is electricity there could be broadband. So cheaper.  Secure data-encryption:The signals are not in the air where neighbours or others could potentially snoop your service. Powerline adapters are sold with encryption turned on . Secured network through a simple password-setting process .
  16. 16.  Improves the competitiveness of the market for broadband services.  One wire offers both power and your highspeed communications needs.
  17. 17. Broadband Services  High Speed Internet Access  Voice Over IP  Video Streaming  Home Networking  Home Automation  Home Security Systems  Telemedicine Applications
  18. 18. Interference issue: The system is expected to use frequencies of 1 to 30 MHZ which has been used by radio operators. Power lines are shielded & have potential to interfere with radio communications.  Harmonics & Intermodulation: The interference caused by BPL harmonics is not reduced even if the fundamental frequency is notched. Intermodulation products are frequently encountered in power lines at bad joints, which readily produce mixing. 
  19. 19.  Noise: The power lines are inherently a very noisy environment. Every time a device turns on or off, it introduces a pop or click into the line.  BPL signals cannot readily pass through transformers, as their high inductance makes them act as low-pass filters.  The system is based on shared bandwidth, in part due to the tree design of the infrastructure.
  20. 20. COMPARISON Product Feature Dial up ADSL BPL Slow Fast Faster No No Yes Cheap Expensive Cheap Phone/data cabling required Yes Yes No No added costs – no expensive in-house data cabling required or expensive wireless router Access to the Internet Yes Yes Yes Web browsing VoIP phone access included No No Yes Cost savings Integrated Internet and VoIP No No Yes Ease of use and cost savings Always on No Yes Yes Convenience Cheap VoIP calls No No Yes Cost savings, no additional hardware or software required Suitable for video No Some higher speeds Yes Value for money, fun to use Speed Convenient access Cost Customer Benefit Saves time Convenience, available through virtually all power points Cost effective service
  21. 21. •BPL has been considered as a potential 3rd wire that can compete with cable & DSL internet services . •Electrical power lines offer a clear benefit ,but it is important to remember that BPL provisioning does not come without the additional infrastructure costs. • As required, further refinements will be made to BPL technologies to enable them to reduce harmful emissions.
  22. 22. ANY QUERIES ?