Hi, We are experimenting with two USRP1's (each with RFX2400) and noticed some strange behavior. We use the /usr/local/share/gnuradio/examples/digital/benchmark_rx[tx].py. We run it once and the number of corrupted/lost packets is rather small, say 0-2%. Without modifying any default values of parameters, or touching the USRP's, we start it again and the number goes up to, say 40%. We run it again and the number of lost packets is about 90% and those that make it through are mostly corrupted. It doesn't always occur in this pattern, sometimes we get good ratio for a few runs of the benchmark and then it goes down again. Sometimes it no packets are received at all. All within the same parameters and physical positions of the radios. We tried different values of Tx amplitude and Rx gain, but radios keep behaving in this way. We attached the FFT sink on the receiver side and see that the signal is coming in, but packets are still mostly lost after a few runs, sometimes even after the first run.
What could be the reason for this behavior? What is the optimal setup for two USRP's -- in terms of physical distance and values of parameters? Thanks, Jakub _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
