In this paper, the architecture and the implementation of a complex fast Fourier transform (CFFT) processor using 0.6 m gallium arsenide (GaAs) technology are presented. This processor computes a 1024-point FFT of 16 bit complex data in less than 8 s, working at a frequency beyond 700 MHz, with a power consumption of 12.5 W. The architecture of the processor is based on the COordinate Rotation ...

This paper presents a study of the suitability for FPGA design of full custom based CORDIC implementations. Since all these methods are based on redundant arithmetic, the FPGA implementation of the required operators to perform the different CORDIC methods has been evaluated. Efficient mappings on FPGA have been performed leading to the fastest implementations. It is concluded that the redundan...

The modern communication systems and software radio based applications demands fully digital receivers, consisting of only an antenna and a fully programmable circuit with digital modulators and demodulators. A basic communication system’s transmitter modulates the amplitude, phase or frequency proportional to the signal being transmitted. An efficient solution (that doesn’t require large table...

An unified array architecture is described for computation of DFT, DHT, DCT and DST using a modified CORDIC (CoOrdinate Rotation DIgital Computer) arithmetic unit as the basic Processing Element (PE). All these four transforms can be computed by simple rearrangement of input samples. Compared to five other existing architectures, this one has the advantage in speed in terms of latency and throu...

1 Abstract This paper describes the design and simulation of an 8-bit dedicated processor for calculating the Sine and Cosine of an Angle using CORDIC Algorithm (COordinate Rotation DIgital Computer), a simple and efficient algorithm to calculate hyperbolic and trigonometric functions. We have proposed a dedicated processor system, modeled by writing appropriate programs in VHDL, for calculatin...

In the field of digital signal processing, such as in navigation and radar, a significant number high-precision arctangent function calculations are required. Lookup tables, polynomial approximation, single/double-precision floating-point Coordinate Rotation Digital Computer (CORDIC) algorithms insufficient to meet demands practical applications, where both high precision low latency essential....

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...

CORDIC (Coordinate Rotation Digital Computer) is a class of shift add algorithms for rotating vectors in a plane, which is usually used for the calculation of trigonometric functions, multiplication, division and conversion between binary and mixed radix number systems of DSP applications, such as Fourier Transform. The CORDIC algorithm has become a widely used approach to elementary function e...

16 Abstract— The current research in the design of high speed VLSI architectures for real-time digital signal processing (DSP) algorithms has been directed by the advances in the VLSI technology, which have provided the designers with significant impetus for porting algorithm into architecture. Many of the algorithms used in DSP and matrix arithmetic require elementary functions such as trigono...

We present the design of parallel architectures for the computation of the Hough transform based on application-specific CORDIC processors. The design of the circular CORDIC in rotation mode is simplified by the a priori knowledge of the angles participating in the transform and a high throughput is obtained through a pipelined design combined with the use of redundant arithmetic (carry save ad...