Voice over Powerline (Full-duplex)

[teotsky]

Im a 5th year ECE student. I am working on a project that allows voice communication over powerline (full-duplex) on a small building. Can anyone help me whats the best modem to use? I wanted to try Consumer-band BPSK 7.2 kbps PLM PICtail of MICROCHIP and MAX2990 EVKIT of MAXIM.

Thank you!

 

[HTA]

The transmission over PLM needs to be digital voice I think. Maybe this metering application helps to find a good approach: https://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/DM00051173.pdf .

Enjoy your design work in the new year!

 

[YanivS]

Hi teotsky,

Check the following link: https://www.yamar.com/sig60.php, it provides communication up to 115Kbps however the communication is only half duplex.
If you need more information let me know.

 

[ALERTLINKS]

There are commercial duplex intercoms which use power line. Range is within same 220V feed after hi voltage power transformer. It uses around 100KHz-120KHz FM signal. Rx and Tx is some 20KHz apart. I have seen usage more than a mile apart. These were popular a decade ago. LM567 was used for Rx, Tx and call detection. I have repaired hundreds of them.