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Question asked by H.ELGALA on Feb 26, 2006
Latest reply on Feb 27, 2006 by H.ELGALA
I am a new user to ADS and studying the examples presented in the BER Validation Guide, I have some problems understanding some things:
1. If I change the rolloff to 0.22 the simulated SER curve deviates significantly from theory. Why does changing the Rolloff factor affect the SER performance? I did not find anywhere any information on the impact of the rolloff on delay.
2. When plotting the Eye diagram to determine the optimal sampling instant, I have the TK sample delay slider to zero and in the Eye diagram I see that the best sample should be at a different value than what I know to be the optimal one from looking at the received samples and from the BERStart equation. How can I determine what the best sample is from the Eye diagram?
I look forward to hearing from you.  

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