The CORDIC algorithm provides an efficient method of computing trigonometric functions by rotating a vector through some angle, specified by its coordinates. This rotation is obtained by performing a number of micro rotations through elementary rotation angles, into which the total rotation angle has been decomposed. This paper presents the design and implementation of a runtime reconfigurable ...

The COordinate Rotational DIgital Computer (CORDIC) is an arithmetic algorithm widely used in the computing of elementary functions and digital signal processing applications, particularly where large amounts of rotation operations are necessary. After a survey of the principal architectures for the design of a CORDIC processor, a pipeline scheme is presented to achieve performance enhancement ...

The CORDIC (Coordinate Rotation Digital Computer) algorithm is a well-known versatile approach, which can be used to implement a large variety of arithmetic functions. Consequently, it is widely applied in Digital Signal Processing (DSP) on today’s SoCs. Typical tasks comprise Numerically Controlled Oscillator (NCO), phase rotation, equalization, modulation and demodulation, DCT [1], to name a ...

In this paper a multiplierless array architecture of Affine transformation is proposed. The array architecture utilizes CoOrdinate Rotation DIgital Computer (CORDIC) arithmetic unit as the basic Processing Element (PE). To construct the architecture two types of CORDIC units viz. the circular and linear are used. The architecture is flexible and can be configured according to the specification ...

This paper introduces a new approach to direct digital frequency synthesis (DDFS) based on the Coordinate Rotation (CORDIC) algorithm. The modifications to the standard CORDIC algorithm introduced in this paper allow fine frequency resolution, and exhibit significant potential for low power applications. The new architecture does not need a large ROM and can be implemented on a general purpose ...

Coordinate Rotation Digital Computer (CORDIC) algorithm is an established method in complex arithmetic function discovery using shift and add operations. An absolute Scaling-free CORDIC algorithm for cosine and sine function computation function has been implemented. A combination of third order approximation Taylor series and leading-one-bit detection algorithm has been adopted in this impleme...

In this paper we present the FPGA implementation of a new word{serial CORDIC processor working with variable precision. It has been designed in such a way that it allows us to take advantage of the successive shifts in the coordinates involved in the CORDIC algorithm. This signiicatively reduces the total number of cycles required. Special attention has been paid to the design of the critical p...

– The theoretical analysis gives an overview of the functioning of DDS, especially with respect to noise and spurs. Different spur reduction techniques are studied in detail. Four ICs, which were the circuit implementations of the DDS, were designed. One programmable logic device implementation of the CORDIC based quadrature amplitude modulation (QAM) modulator was designed with a separate D/A ...