Good day everyone,

My sincere apology in advance if this question has been asked before, but i 
tried search thru the archives but to no avail.


Currently, I am trying to calculate the BER for GMSK, But first I started off 
on a perfect channel without USRP.


My current block diagram is as follows:

"Random Source"
0s and 1s, 10^6 windows -> "Throttle" -> "GMSK Mod (default settings)" -> "GMSK 
Demod (default settings)" -> "Error Rate Block"

I am feeding in "Error Rate block" with the random source and the "GMSK Demod" 
Output.

I am getting BER of 50%... Anyone knows what is wrong?

In fact, I saved the input and output as binary files. I found out that they 
are not very identical especially in terms of binary length. I tried input 9 
bits of binary and I obtained 63 bits from the GMSK Demod Output.
Is there something that is missing? 
Hope someone can advise me. Thank you :)

Best Regards,Sun                                          
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