On Thu, Jun 25, 2009 at 11:41:48AM -0700, Brook Lin wrote: > Thanks Martin for your reply. I gave a larger gain, but still doesn't work. > And I think I was using AM modulation in my tx_path, wasn't it? And I used > usrp_am_mw_rcv.py to receive my transmitted signal. Should I use > gr.interp_fir_filter_fff() on the transmitter side for am modulation? Are > the parameters correct in optfir.low_pass()?
usrp_am_mw_rcv tries to remove a carrier which you have not sent, that's what I meant with AM modulation. MB -- Dipl.-Ing. Martin Braun Phone: +49-(0)721-608 3790 Institut fuer Nachrichtentechnik Fax: +49-(0)721-608 6071 Universitaet Karlsruhe (TH) http://www.int.uni-karlsruhe.de/
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