I'm trying to implement a method used by Mr. Jeff Miller in a Matlab training session entitled "Fixed Point Made Easy," and had a question regarding his use of look-up tables
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Michael Kussmaul
on 8 Aug 2023
Commented: Michael Kussmaul
on 9 Aug 2023
My question is regarding the splitting of the sfix18 angle value into two numbers, one composed of the upper 9 bits the other composed of the lower 9 bits. Isn't the LUT_HIGH for angles =>pi, and the LUT_LOW for angles <pi so that only one LUT is being used at a time? I was also wondering what the workings of the HDL_Complex_Multiplier would look like. Thank you for your attention to my question.
Sincerely, Michael
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Kiran Kintali
on 8 Aug 2023
Edited: Kiran Kintali
on 8 Aug 2023
Can you share the training material and models you are referring to?
Looking at the picture you attached the two LUTs are not two sets of angles but upper and lower bits of the angle input.
You may find attached models helpful.
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