Reconstruction of N-th order nonuniformly sampled signals using digital filter banks

A digital filter bank structure is proposed to reconstruct uniformly sampled bandlimited signals from their N-th order nonuniform samples, based on an existing filter bank structure in the literature. The proposed structure utilizes polyphase domain filtering operations and discrete Fourier transform (DFT) modulation matrices to improve the computational efficiency of the existing filter bank structure. The proposed structure finds applications in time-interleaved analog-to-digital converters (TIADCs), digital flight control, etc.