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Altera_Forum
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11 years ago

How to implement a code that uses floating-point?

Hello, How should I do to implement in VHDL, a code that calculates the following equation: u(k) = 622,5u(k-1) + 0,6279u(k-2) + 651,2e(k) + 0,000814e(k-1) - 651,2e(k-2). I am a beginner in VHDL and d...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

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The IIR filter structure can be only implemented if the latency is smaller than the sample period. This might be a problem with float IP.

Generally I assume that a fixed point implementation will better serve the intended purpose.

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I think it not possible to represent the coefficients ranging from 651.2 to 0.000814 with fixed point. Unless I do the staggering numbers. Am I right?? Fixed point representation uses 32 bit, right??