Error using measurement of Constellation diagram in r2022a

Question

Raphael Cannatà 2022-5-24

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https://ww2.mathworks.cn/matlabcentral/answers/1725955-error-using-measurement-of-constellation-diagram-in-r2022a

编辑： Divyanshu 2024-2-2

I've been using the 'Constellation diagram' Simulink block and I noticed that the measurements performed by the block, such as EVM, are not consistent over different simulations. I then tried going back to the r2021b, since some of my colleagues were succesful with that version and the measurements are accurate at each simulation. I also noticed that the block has changed a bit from 2021 to 2022.

Has anyone else experienced the same problems? How can I solve them?

I will attach some results of the same simulation with the same parameters, but different measurements

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Answer 1

Divyanshu 2024-2-2

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https://ww2.mathworks.cn/matlabcentral/answers/1725955-error-using-measurement-of-constellation-diagram-in-r2022a#answer_1401666

编辑：Divyanshu 2024-2-2

Hi Raphael,

Since the 'Constellation Diagram' was giving consistent results in R2021b and you are facing issues in R2022a, then most probably it is due to some release specific bug associated with the block.

You can refer the following Bug Report which is related to 'Constellation Diagram Block':

https://www.mathworks.com/support/bugreports/details/2668471

A workaround is also provided in the bug report to resolve the issue.

Thanks!