Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Transmit 2 bits of 1MHz (modulation)

Hello, Y have one signal of 2 bits and with one bandwidth about 1MHz and I need send this bits using one fiber optic (FO) cable. Transmit one signal over fiber optic is easy because I ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Hi,

You better first try your design in quartus and it will tell you if it then fits any other device.

It is not clear what modulation scheme you want to do. You haven't stated your carrier frequency(this is different from bandwidth) and you haven't stated your bit rate.

If your bits are available as input then you need to map them to symbols then generate a carrier(sinusoid) at the target frequency then multiply your symbols with the carrier(mult can be complex or not depending on your modulation scheme) then convert it to analogue and through the cable...

edit: you will also need pulse shaping filter to avoid ISI