The Performance Evaluation of Window Functions and Application to FIR Filter Design
Mridula Malhotra · 2011
Abstract — The paper is based upon the performance of various w indows in designing FIR Filter. The cosine hyperbolic w indow has been used to design a better FIR Filter in terms of ripple ratio, side-lobe roll off ratio and main-lobe w idth w ith its advantages of no power series expansion in frequency domain hence need less hardware. The spectral characteristic of cosh window is compared with other windows like Kaiser Window, hamming w indow and their combinations. A modification is also introduced in cosh window to perform better in terms of ripple ratio as compared to Kaiser as well as cosh w indow.