I'm dealing with very small numbers in matlab and I came across this problem .. I have a vector (x) that I add a D.C. Value to it ( constant number around 0.5) and then I subtract the number to get y.. the problem is x is not equal to y, why?

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Diana on 22 Nov 2016

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Answered: Star Strider on 22 Nov 2016

The problem also extends to the demodulation where if I sent 1+J I get 1-j since I'm using hard decision

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KSSV on 22 Nov 2016

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Read about floating point numbers.

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Star Strider on 22 Nov 2016

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Why is 0.3 - 0.2 - 0.1 (or similar) not equal to zero?

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