Hi Jason, I really appreciate your help about the problem that I got. The info related to the GNURadio and the USRP that I'm using is listed in the following. > > Please confirm that you just see the carrier, not your modulated > signal when using the lock()/unlock()
I checked the result of using lock()/unlock() by correlating the down converted signal with the Barker code, at the transmission pause interval, there is no correlation peak. Therefore, it turned out there is no code transmitted during the transmission pause interval. Is it a right way to test if there is Barker code transmitted during the transmission pause interval? Is lock/unlock working for completely turning off the signal transmission for 5ms? However, I'm sure when using lock/unlock method still gives at least carrier signal in the pausing interval, which is observed on the oscilloscope. > > Also, please tell us: > > What version of GNUradio are you using? The version of GNUradio that I'm using is GNURadio 3.2svn > > What hardware are you using? USRP? which daughterboard? I'm using USRP1 with LFTX daughterboard plug-in. (similarly, at the receiver side,USRP1 with LFRX plug-in is utilized. ) > > Are you using UHD? I'm not using UHD. Thank you so much for all of your help! Thanks, Yan
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