CORDIC Architectures: A Survey
نویسندگان
چکیده
منابع مشابه
CORDIC Algorithms and Architectures Herbert Dawid Heinrich
Digital signal processing (DSP) algorithms exhibit an increasing need for the e cient implementation of complex arithmetic operations. The computation of trigonometric functions, coordinate transformations or rotations of complex valued phasors is almost naturally involved with modern DSP algorithms. Popular application examples are algorithms used in digital communication technology and in ada...
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In this work we present a new CORDIC algorithm for the vectoring mode, based on the use of radix-4, preserving a complexity in the microrotations that is similar to that of the conventional radix-2 CORDIC. The use of this radix, together with the inclusion in the CORDIC algorithm of the zero skipping technique, reduces by more than half the number of iterations with respect to the conventional ...
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In this paper we propose a generic algorithm to calculate the rotation parameters of CORDIC angles required for the Discrete Cosine Transform algorithm (DCT). This leads us to increase the precision of calculation meeting any accuracy.Our contribution is to use this decomposition in CORDIC based DCT which is appropriate for domains which require high quality and top precision. We then propose a...
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The CORDIC algorithm is used in many fields of signal processing for computation of elementary functions. Its main advantages are versatility and simplicity. When implemented in a word parallel pipeline it yields the highest possible throughput. However, this solution is accompanied with increased hardware complexity and chip area requirements. The goal of this paper is to develop redundant COR...
متن کاملHigh Precision DCT CORDIC Architectures for Maximum PSNR
This paper proposes two optimal Cordic Loeffler based DCT (Discrete Cosine Transform algorithm) architectures: a fast and low Power DCT architecture and a high PSNR DCT architecture. The rotation parameters of CORDIC angles required for these architectures have been calculated using a MATLAB script. This script allows the variation of the angle’s precision from 10−1 to 10−4. The experimental re...
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ژورنال
عنوان ژورنال: VLSI Design
سال: 2010
ISSN: 1065-514X,1563-5171
DOI: 10.1155/2010/794891