Hi, > On 10 May 2015, at 04:21, Jeon <sjeon87+gnura...@gmail.com> wrote: > I missed one another thing. > > `if(((d_count + o) % 64) == 0)` statement in > https://github.com/bastibl/gr-ieee802-11/blob/master/lib/ofdm_sync_long.cc#L141 > > Is this because of a length of an OFDM signal being a multiple of 64, which > is the number of subcarriers? (Except cyclic prefix)
Yes, the next step is the FFT that works on blocks of 64 samples. The line you quoted is executed when a new frame is about to start. It’s to ensure that the new frame starts at a multiple of 64 samples. Best, Bastian _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
