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Minimized Group Delay FIR Low Pass Filter Design Using Modified Differential Search Algorithm

Prajapati Sonelal, Rai Sanjeev, Tiwari Manish, Dwivedi Atul Kumar

Journal of Telecommunications and Information Technology

2023

nr 3

78--84

Designing a finite impulse response (FIR) filter with minimal group delay has proven to be a difficult task. Many research studies have focused on reducing pass band and stop band ripples in FIR filter design, often overlooking the optimization of group delay. While some works have considered group delay reduction, their approaches were not optimal. Consequently, the achievement of an optimal design for a filter with a low group delay value still remains a challenge. In this work, a modified differential search optimization algorithm has been used for the purpose of designing a minimal group delay FIR filter. The results obtained have been compared with the classical techniques and they turned out to be promising.