=> the maximum samples per symbol value that benchmark_tx has is 7. What > happens if I change it to a higher value and reduce the bitrate such that > the usrp constraints are still met. I read somewhere that having a sample > per symbol value greater than 7 is impractical. Why?
>From a strictly 'seat of the pants' point of view, it seems to work fine. You can edit the array (I think in pick_bitrate.py) that limits the search space for bitrates to a sps less than 7. You can add your own like, 50 and 60 for example, and pick_bitrate will then allow for you to use the very low data rates associated. As for why this might be bad, I have no idea, we did it mainly as a 'look what we can do' for testing out a large range of bitrates. When we took experimental data over a range of SNRs using a channel emulator to set the SNR via additive noise we found that the empirical measurements very closely matched the theoretical limits expected from BPSK. Jason _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
