SEMINAR ON BROADBAND OVER POWERLINES presented by Gyana Ranjan Sethi Electrical Engg Roll no-403022 Regd no-04199ty01857 Topics to be discussed… What is BPL ? Types of BPL Service. The operation. BPL Modems. Advantages limitations Challenges. What is BPL ? An emerging technology in the competitive world of broadband Internet service offering high- speed access to your home through the most unlikely path: a common electrical outlet. Combines technological principles of radio, wireless networking, and modems. What is BPL ?(contd..) Data sent over power lines into homes at speeds between 500 kilobits and 3 megabits per second (equivalent to DSL and cable). BPL is already being tested in several cities around the United States and the United Kingdom. Developed by current communications group and Enikia. Types of BPL Service. In-House BPL Access BPL The big idea Idea is to transfer data using AC. RF is bundled with current without the need of separate data line. Used by Electrical companies to monitor performance of power grids. There are even networking solutions available today that transfer data using the electrical wiring in a home or business. Operation Power transmission Operation (contd..) Different parts of operation REPEATER CT COUPLER CT BRIDGE The whole operation (contd..) 1. REPEATERS: The repeaters are special devices that take in the data and repeat it in a new transmission, amplifying it for the next leg of the journey. 2. CT COUPLER: The CT Coupler is a device that allows the data on the line to bypass transformers. Operation (contd..) 3. CT BRIDGE: It is the device capable of carry the signal with the electricity on the power line as well as putting wireless links on the poles and sending the data wirelessly into homes. Other Functions of CT Coupler Manage symmetric data transmission Manage subscriber information Support security encryption of all transmissions BPL MODEMS use silicon chips designed to send signals over electric power lines. Capable of handling powerline noise on a wide spectrums BPL Modems OVER ALL VIEW OF WORKING OF B.P.L advantages it is enexpensive It required no new wiring The network add no cost on your electric bills Cheapest method of connecting computers in differenet rooms It is fast rated at 14 megabits per second Acessing internet in rural areas limitations BPL tends to generate much radio interference over the utility lines it runs . the costs for utility companies to prepare their grids to support BPL can be high. BPL Affecting VHF/UHF Public Safety Frequencies Challenges Problem of INTERFERENCE The bandwidth needed for BPL directly interferes with ham radio and short-wave radio transmissions. Developers of BPL say that these interference issues have been solved. Only tests and time will tell. Until then, the advancement of BPL moves forward slowly as it waits for standards and logistics to be decided by regulating bodies. Conclusion The potential of this new technology is exciting and its prospects are very bright. By providing high-speed data transmission between all of the electrical plugs in a house, there is the potential to network all kinds of common appliances in a household.
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