Zaka Ullah Sheikh

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The coefficient decimation technique for reconfigurable FIR filters was recently proposed as a filter structure with low computational complexity. In this brief, we propose to design these filters using linear programming taking all configuration modes into account, instead of only consider the initial reconfiguration mode as in previous works. Minimax(More)
In this work a new technique for design of narrow-band and wide-band linear-phase finite-length impulse response (FIR) frequency-response masking based filters is introduced. The technique is based on a sparse FIR filter design method for both the model (bandedge shaping) filter as well as the masking filter using mixed integer linear programming(More)
This correspondence introduces efficient realizations of wide-band LTI systems. They are single-rate realizations but derived via multi-rate techniques and sparse bandpass filters. The realizations target mid-band systems with narrow don't-care bands near the zero and Nyquist frequencies. Design examples for fractional-order differentiators demonstrate(More)
This correspondence introduces a technique for efficient realization of wide-band finite-length impulse response (FIR) linear and time-invariant (LTI) systems. It divides the overall frequency region into three subregions through lowpass, bandpass, and highpass filters realized in terms of only one filter. The actual function to be approximated is in the(More)
Commonly used design procedures for design of digital differentiators are based on various optimization techniques and are also iterative in nature. The order estimation, for differentiators is important from design point of view as it can help in reducing the design time by providing a good initial guess of the order to the iterative design procedures.(More)
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