Chapter6_powerline

  • Số trang: 13 |
  • Loại file: PDF |
  • Lượt xem: 21 |
  • Lượt tải: 0
tranphuong5053

Đã đăng 6896 tài liệu

Mô tả:

Power Line Chapter 6 Powerline Network Korea-Vietnam Friendship IT College Power Line Overview • Introduction • Broadband over Powerline (BPL) technology • Equipments • Standards 2 Korea-Vietnam Friendship IT College Power Line Introduction • Broadband over power line is a method for sending highspeed communications information over electric utility lines. 3 Korea-Vietnam Friendship IT College Power Line Benefits • No more wires, just plug in • Share your internet connection with other home devices • Move your computer anywhere you want to in your house • Easy to install • High transmission rate – Up to 100Mbps • Secure data-encryption • Utilizes existing power source 4 Korea-Vietnam Friendship IT College Power Line Broadband over Powerline technology End-to-end BPL technology 5 Korea-Vietnam Friendship IT College Power Line Broadband over Powerline technology • Through "conditioning" of the existing electricity infrastructure, electrical utilities can transmit regular low frequency signals at 50 to 60Hz and much higher frequency signals above 1MHz without affecting either signal. The lower frequency signals carry power, while the higher frequency signals can transmit data 6 Korea-Vietnam Friendship IT College Power Line Broadband over Powerline technology • The signal modulation technique used in Access BPL is OFDM (Orthogonal Frequency Division Multiplexing). • The important characteristic of OFDM is its ability to spread the data signals over a much greater bandwidth allowing it to adaptively overcome noise in the communication system. 7 Korea-Vietnam Friendship IT College Power Line Equipments • Base station server • Conditioning Unit • Service Unit 8 Korea-Vietnam Friendship IT College Power Line Base Station Server • Designed for basic street electrical cabinets • Typically, one street cabinet contains 12 base station units • Base stations typically serve approximately 50 customers • The server operates via IP to create a LAN type environment for each local service area 9 Korea-Vietnam Friendship IT College Power Line Conditioning Unit • Placed near the electric meter at each customer’s home • The CU uses band pass filters to separate the electricity and data signals 10 Korea-Vietnam Friendship IT College Power Line Service Unit • The service unit is a wall or table mountable multipurpose data communications box 11 Korea-Vietnam Friendship IT College Power Line Standards • IEEE, standard P1675, installation and safety of BPL. • HomePlug 1.0 specification called HomePlug AV that is capable of 200 Mbps. 12 Korea-Vietnam Friendship IT College Power Line Summary 13 Korea-Vietnam Friendship IT College
- Xem thêm -