Complex approximation for FIR filters with equiripple magnitude and phase response. - Masaaki Ikehara; Masahiro Okuda; Kageyuki Kiyose; Shin-ichi Tikahashi (ISCAS, 2000)

Complex approximation of FIR digital filters by updating desired responses. - Masahiro Okuda; Masahiro Yoshida; Kageyuki Kiyose; Masaaki Ikehara; Shinichi Takahashi (IEEE Trans. Signal Process., 2005)