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BER MC simualtion problems in examples

Question asked by dangerous on Jan 5, 2015
I plan to do some BER test for a transceiver, and come to some questions when consulting the Example>>BER_Validation_wrk.

For the Pi4DQPSK, the schematic and the result are displayed in figure 1 and 2, it use the auto synchronization in the BER MC sink, as “Delay Bound=3*SymTime". But when I add the exact delay between the Ref and Test signal as show in figure sch_2 -- "Ref_Delay=9 * SymTime +22*TStep", and "Delay Bound=-1", I didn't get the same result. So someone can explain it, thank you.

Edited by: Dangerous on Jan 5, 2015 9:30 AM