On Wed, May 13, 2009 at 12:31:23PM +0200, José Carlos Reyes wrote: > Hi all, > > I would like to ask you a basic question. > I receive the BCCH and CCCH (PCH and AGCH) GSM channels with gsm-tvoid and > gsmdecode. I use USRP. For instance, to do that, I type something like: > > ./gsm_scan.py -p d -r e -c 104 | ../../../gsmdecode/src/gsmdecode -i > > myfile.txt > > The problem is that a lot of messages are missed. While I am receiving I can > see warning messages like the followings: > > sch.c:254 ERR: conv_decode 7 > gsmstack.c:162 cannot decode fnr=0x002921c8 ts=0 > gsmstack.c:162 cannot decode fnr=0x002921ce ts=0 > gsmstack.c:162 cannot decode fnr=0x002921e2 ts=0 > gsmstack.c:162 cannot decode fnr=0x002921ed ts=0 > gsmstack.c:162 cannot decode fnr=0x002921f1 ts=0 > .... > ... > sch.c:254 ERR: conv_decode 7 > gsmstack.c:162 cannot decode fnr=0x00292229 ts=0 > sch.c:254 ERR: conv_decode 1 > .... > > The BTS (Base Station) from I am receiving is really near my USRP. > What Could I do to solve this? Any Suggestion? > > Thanks in advance for your time. > Cheers > > Jose
Jose, The airprobe list is most likely a better place to ask this question. AFAIK the people who wrote gsm_scan.py are not on this list, or if they are they have been very quiet. Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
