Digital signal processing (3rd ed.): principles, algorithms, and applications
Digital signal processing (3rd ed.): principles, algorithms, and applications
Numerical Accuracy and Hardware Tradeoffs for CORDIC Arithmetic for Special-Purpose Processors
IEEE Transactions on Computers
Fourier Transform Computers Using CORDIC Iterations
IEEE Transactions on Computers
A unified algorithm for elementary functions
AFIPS '71 (Spring) Proceedings of the May 18-20, 1971, spring joint computer conference
50 years of CORDIC: algorithms, architectures, and applications
IEEE Transactions on Circuits and Systems Part I: Regular Papers
IEEE Transactions on Circuits and Systems Part I: Regular Papers
Modified virtually scaling-free adaptive CORDIC rotator algorithm and architecture
IEEE Transactions on Circuits and Systems for Video Technology
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One of the most important steps in spectral analysis is filtering, where window functions are generally used to design filters. In this paper, we modify the existing architecture for realizing the window functions using CORDIC processor. Firstly, we modify the conventional CORDIC algorithm to reduce its latency and area. The proposed CORDIC algorithm is completely scale-free for the range of convergence that spans the entire coordinate space. Secondly, we realize the window functions using a single CORDIC processor as against two serially connected CORDIC processors in existing technique, thus optimizing it for area and latency. The linear CORDIC processor is replaced by a shift-add network which drastically reduces the number of pipelining stages required in the existing design. The proposed design on an average requires approximately 64% less pipeline stages and saves up to 44.2% area. Currently, the processor is designed to implement Blackman windowing architecture, which with slight modifications can be extended to other widow functions as well. The details of the proposed architecture are discussed in the paper.