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pulse Shaping filter

Hi everyone,

 

i've met some problems. There're 4 symbols(-1,0.33,-1,0.33). Now I want to generate the pulse of the symbols. The settings are: 12 samples/symbol, 4-ASK. Theoretically there're 12 samples per symbol. But the first symbol contains only 6 samples and the other symbols are OK. I don't know the reason for that. How can I fix it? The graphs are below.

 

Thank you for your help.

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Hey leature8,

this is a normal behaviour for the "MT Pulse Shaping Filter VI".
I would fix it manually by cut off the first 6 samples of your array (Split 1-D-Array) and generate the first symbol 2 times.

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