MATLAB: Does the demo model BPSKDOC fail to run for an infinite duration even when I set the final time to inf in Communications Blockset 3.4 (R2006b)

communications blockset

I have modified the BPSKDOC demo model inside the AWGN block:
 Es/No = 16
 Input Signal Power = 1
When running the model in this configuration, it will run for an infinite duration. However, when the parameters of the AWGN block are as follows, the model stops running after a small finite time period.
 Es/No = 16
 Input Signal Power = 16

Best Answer

The model BPSKDOC uses an Error Rate Calculation block, which is set to terminate the simulation after 100 errors are collected. When the AWGN block has its Input signal power set to 1, then a certain level of noise is created. However, when the Input signal power is set to 16, and the Es/No is unchanged, then the power of the generated noise is 16 times greater than it was before. That translates to a 10*log10(16) = 12 dB increase in noise. With that increased noise, many more errors are generated, and the Error Rate Calculation block terminates the simulation after 100 errors are counted.
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