Design and Simulation of Two Channel QMF Filter Bank using Equiripple Technique
M.E student, ECE Deptt ,NITTTR,Chandigarh, Meena Kohli, Rajesh Mehra · IOSR Journal of VLSI and Signal processing · 2014
In this paper a design of a two channel FIR QMF bank for perfect reconstruction is presented.The QMF design has multicriterion constraints such as minimal of reconstruction error and minimal of iterations are among the most important problems in filter bank design.The main problem of filter bank design is to find adequate coefficients for the prototype filter H 0 such that the prototype filter has minimum error in stopband, passband and transition band.The proposed QMF filter bank has been developed using equiripple linear phase FIR filters with MATLAB.The developed equiripple linear phase filter bank performance has been compared with kaiser window based filter bank in terms of peak reconstruction error.The results show that equiripple based filter bank provides better PRE ranging from 16.45% to 17.31% as compared to kaiser window based filter bank.