A mixed-radix CORDIC architecture implements sigmoid on Xilinx Virtex-7 FPGA with 835 logic slices, zero DSP blocks, and 4.23e-4 mean absolute error.
Electronics Letters49(25), 1598–1600 (Dec 2013)
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Hardware-Efficient FPGA Implementation of Sigmoid Function Using Mixed-Radix Hyperbolic Rotation CORDIC
A mixed-radix CORDIC architecture implements sigmoid on Xilinx Virtex-7 FPGA with 835 logic slices, zero DSP blocks, and 4.23e-4 mean absolute error.