This paper presents a low-cost and high-quality, hardware-oriented, two-dimensional discrete cosine transform (2-D DCT) signal analyzer for image video encoders. In order to reduce memory requirement improve quality, novel Loeffler DCT based on coordinate rotation digital computer (CORDIC) technique is proposed. addition, the proposed algorithm realized by recursive CORDIC architecture instead ...

The fourth-generation (4G) and fifth-generation (5G) wireless communication systems use the orthogonal frequency division multiplexing (OFDM) modulation techniques subcarrier allocations. OFDM modulator demodulator have inverse fast Fourier transform (IFFT) (FFT) respectively. biggest challenge in IFFT/FFT processor is computation of imaginary real values. CORDIC has been proved one best rotati...

The radial artery reflects the largest amount of physiological and pathological information about human body. However, ultrasound signal processing involves a large number complex functions, traditional digital can hardly meet requirements real-time data. research aims to improve computational accuracy reduce hardware complexity systems. Firstly, this paper proposes apply coordinate rotation co...

A Rectangular to Polar coordinate converter based on scaling free vectoring CORDIC is proposed in this research paper. Polar coordinates are most appropriate for the systems displaying radial symmetry. Here scaling free CORDIC algorithm operating in vectoring mode computes Polar coordinate of input vector i.e. absolute magnitude and phase angle from its rectangular coordinate. Using this algori...

Fingerprint applications are widely used to identify person’s authenticity. It is an important part of Biometric system which is widely accepted because of its accuracy. The frequency domain analysis of fingerprint plays an important role for authentication of noisy fingerprint images. In our project we proposed a new technique to extract features of fingerprint image for perfect matching. The ...

This paper presents parameterized module-generators for pipelined function evaluation using lookup tables, adders, shifters and multipliers. We discuss trade-offs involved between (1) full-lookup tables, (2) bipartite (lookup-add) units, (3) lookup-multiply units, and (4) shift-and-add based CORDIC units. For lookup-multiply units we provide equations estimating approximation errors and roundin...

The Discrete Cosine Transform is one of the most widely transform techniques in digital signal processing. In addition, this is also most computationally intensive transforms which require many multiplications and additions. Real time data processing necessitates the use of special purpose hardware which involves hardware efficiency as well as high throughput. Many DCT algorithms were proposed ...

Digital sine and cosine waves have been used in countless applications in the field of vector rotated Digital Signal Processing (DSP). The COordinate Rotation DIgital Computer (CORDIC) algorithm has become very popular due to its simplicity in catering to almost perfect digital sine and cosine waveforms during modulation and demodulation processes in DSP modules. In this paper, we have presente...

CORDIC (COordinate Rotation DIgital Computer) is an algorithm for performing a sequence of iteration computation using the coordinate rotation. It can generate some powerful elementary function only realized by a simple set of adder and shifter. As such, it is suitable to implement high performance chips, which are applied in digital signal processing and image processing fields with high speed...