I find it hard to describe the LPF. This is an exercise from the book Software Receiver Design Build Your Own Digital Communications System in Five Easy Steps chapter 4.23.

The problem statement is in the picture.

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    $\begingroup$ Hi My_LuLu- I think you will need to explain in more detail what it is you don’t understand and what you are asking. $\endgroup$ – Dan Boschen Feb 19 at 13:00

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