I use GNURadio as a prototyping tool to build a receiver for a digital signal of a home appliance. The signal itself looks good so far.
Also the symbol synchronization works well using the symbol sync block (and a dsp library in the result application):
However, both synchronizers (GNURadio and DSP library) have problems with data packets that follow other packets closely. Sometimes every second or third one is out of sync completely with the source data being of the same quality and amplitude.
Is there something I can change to prevent this? I already tried to change all parameters of the sync block, but no success so far.