On Thu, Apr 22, 2010 at 09:21, Yan Nie <[email protected]> wrote: > I'm modifying the gr-sounder project to transmit a 113-bit legendre sequence > of the bandwith 32kHz and upconvert to certain frequency in the range 1MHz > to 20MHz. At receiver side, the received signal is downconverted to baseband > and store the received sequence into a data file.
There is no way to diagnose what you are doing incorrectly, as you are writing your own modified FPGA code. However, my question to you is--why are you doing this in the FPGA at all? The gr-sounder component was designed as a way of processing a very wide bandwidth signal (up to the full baseband bandwidth of the daughterboard in use). Due to limitations in the transport speed of USB, this can *only* be done on the FPGA. You describe a baseband waveform of 32 ksps, and you are storing the received signal samples to a file. Why don't you just use the stock FPGA image and write a simple GNU Radio application? Johnathan _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
