L1 error criterion based optimal FIR filters
Apoorva Aggarwal, Manjeet Kumar, Tarun Kumar Rawat · 2014
This paper presents an L1optimization method for the design of Nth order finite impulse response (FIR), highpass (HP) and bandstop (BS) digital filters. For the calculation of optimal filter coefficients, L1optimization criterion is adopted. It is seen that filters in L1sense posses flat passband and stopband while retaining a transition band, which is comparable to existing filter design techniques. Simulation results affirm that the proposed L1method outperforms over the existing filter design methods in terms of smaller passband and stopband ripples and sharp transitions.