Optimal design of nonlinear-phase FIR filters with prescribed phase error
IEEE Transactions on Signal Processing
Design of arbitrary complex coefficient WLS FIR filters with group delay constraints
IEEE Transactions on Signal Processing
CCDC'09 Proceedings of the 21st annual international conference on Chinese control and decision conference
Realization of reduced-delay finite impulse response filters for audio applications
Digital Signal Processing
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This paper presents a method for the frequency-domain design of digital finite impulse response filters with arbitrary magnitude and group delay responses. The method can deal with both the equiripple design problem and the peak constrained least squares (PCLS) design problem. Consequently, the method can also be applied to the equiripple passbands and PCLS stopbands design problem as a special case of the PCLS design. Both the equiripple and the PCLS design problems are converted into weighted least squares optimization problems. They are then solved iteratively with appropriately updated error weighting functions. A novel scheme for updating the error weighting function is developed to incorporate the design requirements. Design examples are included in order to compare the performance of the filters designed using the proposed scheme and several other existing methods.