Nagahara

[psi gopt] = dfdesign_w_lmi(phi, w, d, n);DFDESIGN_W_LMI computes the H-infinity optimal inverse FIR filter of phi(z).The resulting filter minimizes the H-infinity norm of the error system E_w(z) = [z^(-d) - psi(z)phi(z)]w(z).The LMI method based on KYP lemma is used in this function.[INPUT]phi:... Platforms: Matlab

Computes the H-infinity optimal causal filter (indirect B-spline filter) for the cubic spline.[INPUT]d: delay[OUTPUT]psi: the optimal filter psi(z) in a TF objectgopt: optimal valueThis file is based on the following paper:M. Nagahara and Y. Yamamoto,H-infinity optimal approxmation for causal... Platforms: Matlab

[psi gopt] = dfdesign_w(phi, w, d);DFDESIGN_W computes the H-infinity optimal inverse filter of a given filter phi(z).The resulting filter psi(z) minimizes the H-infinity norm of the error systemE_w(z) = [z^(-d) - psi(z)phi(z)]w(z).If an error occurs, use "dfdesign_w_lmi.m".[INPUT]phi: target... Platforms: Matlab

Matlab codes are provided for min-max optimization for loop-filter design in delta-sigma modulators.The MATLAB codes are based on our recent paper:M. Nagahara and Y. Yamamoto,Frequency-Domain Min-Max Optimization of Noise-Shaping Delta-Sigma Modulators,to appear in IEEE Trans. SP, 2012.A draft... Platforms: Matlab