FPGA Implementation of the CORDIC Algorithm for Fingerprints Recognition Systems

Provided by: University of Semnan
Topic: Security
Format: PDF
In this paper, the authors propose a low-cost sequential architecture for the implementation of CORDIC algorithm in two computation modes. It suited for serial operation that performs conversion between polar and rectangular coordinate systems, essentially sin/cos, sinh/cosh and arctan computation. The design targets real time application of fingerprint recognition. they present a VHDL description of CORDIC algorithm. To reduce iteration delay, they used some combinatory blocks. Fixed point arithmetic was considered. To valid their conception and its CORDIC accuracy, they present relative error calculated in convergence range for some trigonometric and hyperbolic functions. All measurements show an enhancement compared with their previous paper. The architecture was implemented and tested. The contribution of the paper includes the CORDIC design flow.

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