How to test the BER on a demodulator itself?

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I have a new demodulator design. In order to assess the performance I want to simulate/ measure its BER. This is only a demodulator using a simple PLL, no wireless involve. In this case, how to get the BER number from it? I mean either simulation or measurement. Thanks
 

You can try to simulate it in ADS using the ptolomy with ENV method. Please be sure noise sources are included in your PLL blocks.
 

thank you.

How to measure the BER?

The input is just a inverter buffer, and the output is the demodulated signal. The modulation is BPSK.
 


You need to derive the decision rule for your demodulator and simulate the decision statistics.
 

There is a component in ADS named "BER" that is used to compare the input data and the demodulated data to give the ber number. Please search it in ADS documents.
 

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