radix 4 complex fft :: Overview
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Details
Name: cfft
Created: Oct 29, 2002
Updated: Dec 20, 2009
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Category: Arithmetic core
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Development status: Stable
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Description
This is synthesizeable radix 4 complex fft processor. Input data width and points are configurable. Output data width = Input data width + 2. Some necessary limited and shift have been done at every butterfly.
A sample implementation of a 1024 point 12 bit FFT runs at about 97MHz in a Spartan2e100 -6 device and occupies 1,271 LUTs (about 52%) and 1,144 registers (about 47%) of the device.