2010/9/15 intermilan <tianxia...@hotmail.com>: > hi all: > I want to make the symbol rate of the data which is transmited by > the USRP at the 270.833kb/s.I know the OpenBTS had already make it come > true. but what I want to know is that can I use the resampler block to make > this happen? (put the resampler block after the GMSK Mod block )and the > value of the interpolation and decimation of the resampler block can be the > same as them in the OpenBTS which are 65 and 96.and the interpolation of the > USRP is 320 which is make the sample rate of the usrp is 400k.I have not do > it now ,just want to ask here if it is possible.
You should be able to use the gr.pfb_arb_resampler_ccf block to accomplish this. It's an arbitrary resampler and so doesn't rely on integer relationships. It can be a bit tricky to use, so look at the examples in gnuradio-examples/src/python/pfb for help in designing the filter for it. ... One of these days, I need to make a convenience wrapper for this block that designs the filter for the half sample rate automatically... Tom _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
