[EMAIL PROTECTED] wrote: > I'm pretty new to gnu radio and I want to transmit an OFDM signal > using different modulation types (BPSK, QPSK, and 64-QAM). The > concept is pretty simple: read data, map it to a specified > constellation map, and then send it through an IFFT. I don't know if > this code already exists but I could use some help.
There is work underway in this area to create a parameterized OFDM modulator/demodulator pair, but it is incomplete and not yet merged into the trunk. You can see the code in: http://gnuradio.org/trac/browser/gnuradio/branches/developers/n4hy/ofdm2/gnuradio-examples/python/ofdm These examples depend on C++ elsewhere in the tree in this developer branch so they won't run as-is. You can, however, see how the transmit path is put together. By the way, you're right--the modulator is the easy part. It's the receiver synchronization that always turns out to be the black magic part. (Why is this always glossed over? :-) Johnathan Corgan Corgan Enterprises LLC http://corganenterprises.com _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
