On Sat, Nov 29, 2008 at 9:55 AM, Qi Chen <[EMAIL PROTECTED]> wrote: > 1. The gr-sounder default transmit amplitude is 4096, is there a particular > reason why this number is chosen? My guess is because a 12-bit DAC is used.
You are correct. This app uses a custom FPGA image for transmission, and unlike most GNU Radio applications, the amplitude here is directly converted to the DAC output values. This is the maximum amplitude. > 3. I did a indoor measurement with TX-RX separation of 50 meters (w/ LOS), > the received channel impulse response has 5 chunks of CIRs instead of one, > and the number of samples between each chunk is always 800 chips, I am sure > those CIRs are not multipath delays since in an indoor environment the > corresponding delays can't be 800-chips apart from each other(way too long). > Am I missing something here? You need to post your command line parameters for the transmitter and receiver. -Johnathan _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
