VLSI Implementation of Coordinate Rotation Based Design Methodology using Verilog HDL

Abstract

In digital signal processing, the arithmetic operations like square root, division, trigonometric functions, logarithmic function are used in various appliances. It’s challenging to build on FPGA because of their complicated algorithm. This research work offers a low-complexity, fixed-point based approach for computing square-root, division and trigonometric function (sin and cos) on a digital computer with circular coordinate rotation (CORDIC). Without sacrificing calculation speed, throughput, or accuracy, the technique removes the need of a separate hardware for arithmetic operation computation in CORDIC-based systems. They undergo a lot iteration to get a precise output. Thus, main benefit of this design is that it can handle any number range, where the inputs must lie inside a specific range. By adopting a digital computer with circular coordinate rotation, it provides a low-complexity design technique for computing arithmetic operations. Instead of requiring a separate piece of hardware for square root calculation in CORDIC-based systems, as is the case with state-of-the-art approaches, the suggested methodology achieves the same computational speed, throughput, and accuracy. Significant timing improvement without any additional area overhead was seen when the methodology's performance was compared to the stated literature.