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Altera_Forum
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17 years ago

Division Approximation In Fm Demodulator

i am a post-graduate student at the university of ioannina greece "physics department". my thesis subject has to do about an implement of sdr receiver and demodulation of fm signal. i already have im...
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Altera_Forum
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17 years ago

Hi,

If you mean how to round up to nearest integer value then:

With 2's complement of any computation result we can do rounding by looking at the remainder's MSB. If this MSB bit is 1 then add 1 to quotient else leave the quotient unchanged. This applies to both positive and negative numbers.

Be careful about overflowing at this addition of 1

If rounding is not enough then you have to increase the bit resolution.

edit:

I am assuming your remainder is not signed which is the case in any truncation of signed values so check the format of your remainder.