• JYOTI PATEL
• SILKY PAREYANI

This paper represents the design of linear phase finite impulse response (FIR) digital filter under optimization framework, which uses least squares design method for minimizing magnitude response error and thereby reducing the ripple content. In this work we present least squares (LS) approach to design linear phase Finite Impulse Response (FIR) filter. Since the design of FIR digital filters is non-analytic, we aim at ideal zero-phase magnitude response and minimize the weighted error in passband and stopband. The problem of least squares can then be solved non-iteratively by solving system of linear equations. Solution of which yields impulse response that is both real and symmetric. Frequency response of the proposed LS FIR filter shows a flat passband, and higher stop-band attenuation than traditional FIR design.

"LOW PASS FIR FILTER DESIGN USING OPTIMAL LS METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 7, page no.a610-a615, July-2022, Available :http://www.jetir.org/papers/JETIR2207074.pdf

"LOW PASS FIR FILTER DESIGN USING OPTIMAL LS METHOD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 7, page no. ppa610-a615, July-2022, Available at : http://www.jetir.org/papers/JETIR2207074.pdf