General CRC Generator - How to determine generator polynomial

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Pascal Viertel
Pascal Viertel 2024-5-13
评论： Piyush Kumar 2024-5-22
Hello everyone,
In my current project I have to perform a CRC check. At first I had to do this using a regular block diagram, but now I would like to use the CRC generator block provided by Matlab. Unfortunately, I don't know how to determine the polynomial from a given block diagram.
Like here in the example: How do I get the given polynomial from the diagram? (https://de.mathworks.com/help/comm/ref/generalcrcgenerator.html#)

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回答（1 个）

Piyush Kumar
Piyush Kumar 2024-5-20
编辑：Piyush Kumar 2024-5-20
Hi Pascal,
If you double click on the "General CRC Generator" block to get the "Block Parameters", you will find the generator polynomial.
I found this from the Parameters sections of the documentation for the block.
  2 个评论
Pascal Viertel
Pascal Viertel 2024-5-21
编辑：Pascal Viertel 2024-5-21
My question is how I can get from here:
To here:
So basically how is it possible to determine from a given blockdiagram the generator polynomial.
Piyush Kumar
Piyush Kumar 2024-5-22
If you refer to the "Algorithm section" and check the algorithm for "Indirect CRC Algorithm", it has explained the steps involved in detail. There is also a diagram. I am talking about this documentation link.

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