On 03/11/2014 04:40 AM, zhenhua han wrote: > Hi all, > > As Martin Braun noticed in the mail list yesterday, I haven't open my > proposal here. > > Here is the link: > https://github.com/hzhua/grgsm_proposal > > If you have any suggestions, please don't be hesitate to contact me. > > Thanks to Sylvain Munaut for his help on reviewing my first draft. > Thanks to Piot Krysik for his suggestions on gr-gsm.
Hey, congrats on publishing the first proposal! It looks quite good. It's unclear if you have good algorithms to implement your deliverables. A few hints: - The FCH detection can be efficiently implemented using an adaptive filter. Here's a paper that explains the technique, although it's very poorly written: http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=1404796&url=http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1404796 There's also some code for this somewhere... can't find it right now. - A CEL student wrote a highly optimized MLSE, specifically for GSM, a while back (a *long* while back, it still uses autotools). Still, the code is very good, and there's a lot to be taken out of this. He tried out a lot of compiler switches, too, so check out lib/Makefile.am. https://github.com/pgoeser/gnuradio-mlse.git It assumes frame synchronization (i.e. post-SCCH sync), but you just drop in a frame, and it returns the equalized result. MB _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
