Design of Cosine Modulated Filter Bank using Computationally Efficient Multiplier-less FIR Filters
Jyotsna V. Ogale, Alok Jain · 2013
This research work presents a computationally efficient and multiplier-less design approach for cosine modulated filter bank. The prototype filter is designed using rounding and sharpening technique to provide multiplier-less filter. The rounding factors, requiring minimum to maximum number of multipliers, are used to show the performance of the designed filter bank with the fixed sharpening polynomials. Linear iterative optimization algorithm is used for minimization of distortion function. Several examples are given to illustrate the performance of the proposed method.