This brief presents a reconfigurable fast filter bank (RFFB) with less gate counts for wireless communication applications such as spectrum sensing and channelization. This is designed with an improved modified frequency transformation-based variable digital filter (MFTVDF) at the first stage of the multistage implementation. The low-pass MFT-VDF offers unabridged control over the cutoff freque...

The present paper depicts a prototype developed to test and verify functioning of digital filters easily. The minimumphase Finite Impulse Response (FIR) filter was a target-filter to develop such a system. The experimental setup was technologically advanced in such a way that, it compares the magnitude and phase responses of a filter; shown by Frequency Visualization tool (fvtool) of the MATLAB...

The purpose of this paper is to present several filter topologies used for decimation of sigma delta modulated digital signals in order to choose the optimised filter architecture with regards to an efficient implementation. The filter is suited for data conversion and measurement applications. A second order 1-bit sigma delta modulator will be considered as the front-end A/D converter. The sub...

In this paper a proposed of design and analysis of Finite impulse response filter using Hyperbolic Cosine window (Cosh window for short). This window is very useful for some applications such as beam forming, filter design, and speech processing. Digital FIR filter designed by Kaiser window has a better far-end stop-band attenuation than filter designed by the other previously well known adjust...

Abstract The digital down converter (DDC) is used in the front-end of a multiple-antenna radar. This conversion requires several digital filters working at very high sample rates with low power consumption. The input sample rate is 160 MHz and the output sample rate is 40 MHz. To find suitable filter structures for the implementation of the DDC, several filter structures were evaluated. Both re...

Matched-filter is widely used in real time signal processing, especially in Radar Signal Processing. This paper provides a novel structure of digital matched-filter used in tracking radar system. This design applies block-floating-point arithmetic to improve the precision. The whole digital matched-filter is implemented in only one chip of FPGA. This ASIC has two work modes: 512 points pulse co...

Digital VLSI implementation of an auditory filter for speech processor of cochlear implant (CI) is proposed. Optimized design for hardware implementation of the filter with respect to area, power and speed is the significant criterion for the implementation of auditory filter for a CI. A digital filter is designed using the System Generator10.1 through the mathematical model of the FIR filter d...

We propose a new digital diffusion-reaction filter for denoising of digital images and data living on graphs. The construction of this filter is motivated by the regularization and diffusion approach to edge detection by Nordström. Properties and convergence of the iteration scheme are studied and numerical results are given. §

A solution methodology for the design of digital infinite impulse response (IIR) filter considering multiple conflicting objectives has been proposed. The nucleus of the method is that multiple objectives can be attuned suitably, to optimize the performance in pass bands, stop bands and transition bands of IIR digital filters. The proposed method uses multiobjective optimization approach for de...

This paper presents a novel approach for designing a linear phase digital high pass FIR filter using Improved Particle Swarm Optimization (IPSO) algorithm. Design of FIR f ilter is a multi-modal optimization problem. The conservative gradient based optimization techniques are not efficient for digital filter design. Given the specifications for the filters to be realized, IPSO algorithm generat...