We present a parametrization of discrete finite biorthogonal wavelets with linear phase. Our approach is similar to Zou and Tewfik’s for orthogonal wavelets in the way that we utilize a lattice factorization of polyphase matrices of twochannel PR filter banks. However in the biorthogonal case we are faced with the additional possibilitiy of having length differences between the lowand high-pass...

In this paper, we present a structure for implementing the polyphase filters of biorthogonal modulated filter banks that automatically guarantees perfect reconstruction of the filter bank and furthermore allows to specifiy the values of the filters’ frequency responses at certain frequencies. Thus, modulated filter banks without DC leakage can be designed. The new stucture is based on lifting s...

This paper is concerned with design of cascading CIC filter and FIR filter to improve the passband droop and stopband attenuation for decimation filter. Decimation filter has wide application in both analog and digital systems for data rate conversion as well as filtering. We have three class of filters FIR, IIR and CIC filters. IIR filters are simpler in structure, but not satisfy linear phase...

Orthogonal Frequency Division Multiplexing (OFDM) systems are sensitive to timing and frequency estimation errors, which causes inter-symbol-interference (ISI) and intercarrier-interference (ICI), leading to degradation in the system performance. An algorithm is presented in this paper, based on modified polyphase sequences; proposed for timing and frequency synchronization of OFDM system which...

The method for reconstruction and restoration of super resolution images from low resolution sequences presented here is an extension of Irani and Peleg's algorithm (“Improving Resolution by Image Registration”, CVGIP: Graphical Models and Image Processing, Vol. 53, No. 3, pp. 231-239, 1991). The input is a set of low resolution images that have been registered to a pixel translation accuracy. ...