Hi
Can any one plz tell me about the Protocol designing for power Line Communication.
the purpose of the project where these protocols are require is to communicate the PC using existing power line
There is no such a thing like protocol or standard for communication over power lines.
People try to use power lines with or without success.
What you need to connect 2 PC are power lines modems.
Examples here: http://www.hth.com/plm-24/plm-24.htm **broken link removed**
Or if you wish to create your own modems have a look at this:
**broken link removed**
Added after 52 minutes:
Another option comes from Microchip:
**broken link removed**