Hi Glen, We don't need to use the same chain for digital demodulation, since we are not software constrained. Using Gnuradio, we can simply reuse a flowgraph and connect/disconnect blocks on a click of a button to switch from one mode to another. What I don't want to do, is write a custom Gnuradio out-of-tree block like the gr-ysf. I would like to create the flowgraph using only the default blocks, and do that efficiently enough to have lots of room to spare on an ARM CPU like the one I have on my phone. That's because there will be other stuff coming, including a TDMA scheduler which is very sensitive re. the CPU frequency scaling implemented by the (Linux) kernel, as well as H264 decoding - which I'm not sure I can do on the dedicated metal because of proprietary stuff which depends on phone brand. Please don't get me started on reverse engineering Qualcomm qmux device communication :)
I guess what I'm asking for is one volunteer for the 4FSK demodulator, which I would like to use soft symbol decoding and Viterbi. Any takers? Also, for people who like to test even buggy things, I might have an SD card image ready to pop into a phone and play with. Cheers, Adrian ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Freetel-codec2 mailing list Freetel-codec2@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freetel-codec2
