Presentation of bpl
- 1. BROAD BAND OVER POWER LINE(BPL) BY:- B.ALMAS TARANNUM
- 2. What is BPL? Broadband over power lines (BPL) is a method of power line communication . High-speed digital data transmission over the public electric power distribution wiring. Signalling frequencies higher than the electrical signals. Home networks can be run at speeds of 1 to 3 Mbps with full Internet access. Transmission Line Generating Plant Substation Distribution End User System
- 3. History of BPL BPL is an old technology that has struggled with interference issues since it was first rolled out in Manchester, England in 1997. Many countries adopted BPL technology. Due to interference issues BPL transmission had to be ceased Test site with 7,000 user’s was started in Europe in 2003
- 4. Current status of BPL in the world Number of foreign governments are currently studying BPL technology. Some of the countries have also permitted equipment trials.
- 5. Main features of BPL It operates at higher frequencies than traditional range(600kHZ) between 2 and 80 MHz Modulation technique used is orthogonal frequency division multiplexing(OFDM) Provides broadband access over medium voltage power lines. The technology transports data ,voice and videos at broadband speed to the end user’s connection
- 7. Working of BPL Uses power line communication technology Only a BPL “modem” is to be plugged in to get high speed internet access. Internet signals are dropped at medium voltage with a device called ‘head end’ This signal gets degraded during transmission so repeaters are installed. Injector coupler Repeater coupler Extractor distributio n transform er Destinatio
- 8. Function of BPL modem Uses silicon chipsets These modems are capable of handling power noise on a wide spectrum. These modems are capable of speeds comparable to cable modems
- 9. Power line communication (PLC) technology PLC is a technique for sending high speed data through the medium voltage power distribution network PLC is based in OFDM technique mainly because of immunity of OFDM towards interference
- 10. OFDM Modulation Is a frequency multiplexing scheme utilized as a digital multi carrier modulation method Orthogonal sub carriers are used to carry data. It eliminates issues of cross talk and interference between sub channels.
- 11. Advantages of BPL over other connections High speed home networking system Can also reach remote areas Broadband at every outlet Cost effectiveness and large scale broadband penetration. Low cost equipment More secured BPL can be used by power companies to solve their problems in the line
- 12. Issues and challenges Compatibility problems with other users of the radio spectrum Signal attenuation. Turning on and off every time of any electrical device introduces a click into the line. Coordination among Telecom & Power service providers LV transformers act as a low-pass filter, allowing electricity through it with low losses at low frequencies but not higher frequencies etc.
- 13. Conclusion and recommendations In our Country where serious financial constraints exist in terms of heavy investments to be made for laying copper or installing satellite as a mode of final broad band transmission, giving serious consideration and priority to BPL would be worthwhile Besides, low maintenance costs and lesser installation time make BPL a worth technology for increasing broad band penetration. The Broad Band over Power Line communication network technologies are new for Indian telecom network and will grow extensively in near future for higher capacity applications e.g. Triple Play services (telephony, data and TV etc.). Also BPL is a better option with less cost for network operators.
- 14. Reference Wikipedia 2011 URL: http://en.wikipedia.org/wiki/Power_line_c ommunication Valdes, Robert. "How Broadband Over Power lines Works", HowStuffWorks.com.<http://computer.ho wstuffworks.com/bpl.htm>24 February 2010.
- 16. Thank you