Author : Binu M Philip and Arun P

The fixed and known angle vector rotations have many applications in animation, graphics, games, robotics and digital signal processing. CORDIC requires only simple shift add operation to estimate the basic elementary functions like trigonometric operations, multiplication, division and some other operations like logarithmic functions, square roots and exponential functions. But, there are not many optimized coordinate rotation digital computer (CORDIC) designs for the rotation of vectors through specific angles. Therefore, in this paper, different architectures of CORDIC with different accuracy levels are discussed and present a modified CORDIC architecture. The proposed CORDIC design is synthesized by Xilinx field-programmable gate-array platforms, and shown that the proposed architecture offer higher throughput, less latency and less area-delay product than the reference CORDIC design for fixed and known angles of rotation.

Keywords: Coordinate rotation digital computer (CORDIC), digital signal processing (DSP) chip, VLSI

Article published in International Journal of Current Engineering and Technology, Vol.5, No.6 (Dec-2015)