On 20.05.2015 20:19, Michal Vaclík wrote: > Hi, I am sorry for the delayed response. > > I checked the centering of the OFDM signal and it looks pretty good. > Even looking at the signal's spectrum using SDR# on other computer was > very nice - book-grade example of nicely shaped OFDM spectrum. Today I > upgraded from GNU Radio v 3.7.6.1 to 3.7.7.1 and reception > (syncrhonization and detection) has improved dramatically. Even at > relatively low sample rate (1M, anything lower simply doesn't > synchronizie). Unfortunately the received packets still weren't enough > for any kind of real world transmission. > > Was OFDM improved in some kind of way in v3.7.7.1 (I don't see anything > related to OFDM in changelog)? I simply launched the same flowgraph on > newer version and it works much better.
Hm, not that I recall... but good for you :) I forget, were you using the example codes with default settings? If so, does doubling the sampling rate *without* changing the total bandwidth (i.e. doubling the FFT size) help with sync at lower bandwidths? M _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
