Chatting between two computers using FSK modulation

[rocketsumit]

I want to build a chat application so that two computers can transmit text to each other using FSK modulation. But I have no idea how to start with for a dynamics text data transmission. Both the computers should be able to send and receive text messages like a messaging application.

Please help/suggest how to proceed ?

Any help is greatly appreciated.

Thanks in advance!

[altenbach]

How are the computers connected to each other and how do you want to carry the modulated signal (wireless, wire). What hardware are you using?

(If both computers are connected to the internet, TCP/IP might be much simpler and would not require any external hardware.)

[rocketsumit]

I am very sorry. I forgot to mention the most important part. The communication between the computers is to be done wirelessly using NI USRP 2920 hardware.