On Mon, Apr 14, 2008 at 8:03 PM, Wireless Monster <[EMAIL PROTECTED]> wrote: > Hi All, > > I am new to gnuradio and the USRP board and I have a basic question. > > I want to transmit a GSM signal. Once It is encoded I have a 270833.333 > symbols/sec signal. Then, it is up-converted (x8) and GMSK filtered, so I > get a 2.1666 Ms/s complex signal. > > Now the question: How to adapt this rate to the DAC converter on the USRP > board?
Well, if you don't use your x8 upconversion, you can get away with a rational resampling (I believe). Taking 270833.333, and upconverting by 3x makes the sample rate 812500. If you then rationally resample this by 16/13, you get a nice 1Msps signal which you can upconvert by a nice power of 2 for the USRP. Try it out and let us know how it works out? Brian _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
