This paper presents an ultra-high-speed correlation processor for FPGA (Field-Programmable Gate Array) which is based on MDF (multiplepath delay feedback) pipelined FFT (fast Fourier transform) architecture. In order to decrease the resource cost and processing delay, the FFT processor is based on DIF (Decimation in Frequency) decomposition method, and the IFFT processor is based on DIT (Decima...

We introduce variants of the Ma-Dasgupta renormalization-group (RG) approach for random quantum spin chains, in which the energy-scale is reduced by decimation built on either perturbative or non-perturbative principles. In one non-perturbative version of the method, we require the exact invariance of the lowest gaps, while in a second class of perturbative Ma-Dasgupta techniques, different dec...

The Free-Form Deformation (FFD) methods are a family of intuitive, efficient and versatile free-form modelling techniques, which rely on an ambient warp of the space cocooning an embedded object. However, the distortion caused by FFD significantly degrades the approximation quality of polygon-mesh objects. We present a curvature-based adaptive refinement and decimation algorithm which solves th...

We report on numerical studies of RG decimations in SU(2) gauge theory. We study in particular a class of plaquette actions involving sums of group representations. We measure a number of observables representative of different length scales in order to investigate the transformation of the system under different choices of spin blocking, and examine the flow of the effective action couplings. ...

We report on numerical studies of RG decimations in SU(2) gauge theory. We study in particular a class of plaquette actions involving sums of group representations. We measure a number of observables representative of different length scales in order to investigate the transformation of the system under different choices of spin blocking, and examine the flow of the effective action couplings. ...

This paper briefs an implementation of different CIC filter architectures for decimation. The different decimation filter structures are implemented using cascaded integrator-comb filter to work for the down sampling ratio of 8. The prototype is designed with MATLAB Simulink model and it is converted to VHDL code using Xilinx system generator. Prototype is implemented in Virtex VXC5VLX110T-3ff1...

We propose a modification of the Nightingale renormalization group for lattice spin and gauge models by combining it with the cluster decimation approximation. Essential ingredients of our approach are: 1) exact calculation of the partition and correlation function on a finite lattice strip; 2) preservation of the mass gap or the second moment correlation length, computed in the infinite strip ...

We report on numerical studies of RG decimations in SU(2) gauge theory. We study in particular a class of plaquette actions involving sums of group representations. We measure a number of observables representative of different length scales in order to investigate the transformation of the system under different choices of spin blocking, and examine the flow of the effective action couplings. ...

In this paper we use different decimation strategies in irregular pyramid segmentation framework, to produce perceptually important groupings. These graph decimation strategies, based on the maximum independent set concept, used in Bor̊uvka’s minimum spanning tree based partitioning method, show similar discrepancy segmentation errors. Global and local consistency error measures do not show big ...

This paper presents a design technique for high fidelity multistage decimation filters based on the polyphase and decimator structures presented in [1][2], catering for powers of two sample-rate decreases. The technique is well suited for Analog-to-Digital Converter (ADC) applications in excess of 16 bit resolution. The resulting filter coefficients are constrained to the required bit length us...