Interveled Double Rotation Cordic architecture for improvement of Performance

Very large scale integration made a rapid advance in the research area of DSP in terms of high speed VLSI architecture for real time applications. Numerically intensive calculations are required for real scientific computations. In these calculations round off errors and catastrophic cancellation errors occur, that leads to inaccurate results. In order to control the round off errors and catastrophic cancellation errors interval arithmetic techniques are used which do not use fixed values but works over an interval of values to ensure that the exact solution is within an interval. Thus the efficient tool for monitoring errors is the interval arithmetic method. We propose interval arithmetic CORDIC(Coordinate Rotation Digital Computer) architectures to efficiently support and specify the precision to perform interval sine and cosine functions and to guarantee the correct choice of the bounds of the result with a minimal error for the use of DSP (Digital signal processing) applications. This paper presents interval arithmetic Cordic algorithms for computational accuracy of how it works and its implementation using MATLAB toolbox INTLAB. The results show that the proposed algorithm provides higher computational accuracy and performance.