Multirate systems and filter banks
Multirate systems and filter banks
Brief paper: On the indirect approaches for CARMA model identification
Automatica (Journal of IFAC)
Estimation of continuous-time autoregressive model from finelysampled data
IEEE Transactions on Signal Processing
IEEE Transactions on Signal Processing
Blind equalization of time errors in a time-interleaved ADC system
IEEE Transactions on Signal Processing
Estimation of Continuous-Time Stochastic Signals From Sample Covariances
IEEE Transactions on Signal Processing
Filterbank reconstruction of bandlimited signals from nonuniformand generalized samples
IEEE Transactions on Signal Processing
Modeling continuous-time processes via input-to-state filters
Automatica (Journal of IFAC)
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The time-interleaved architecture permits the implementation of high-frequency analog-to-digital converters (ADCs) by multiplexing the output of several time-shifted low-frequency ADCs. An issue in the design of a time-interleaved ADC is the compensation of timing mismatch, which is the difference between the ideal and real sampling instants. In this paper, we propose a compensation method that, as opposite to existing approaches, does not assume that the input signal is band limited but assumes instead that it has a stationary known power spectrum. The compensation is then designed in a statistically optimal sense. This largely reduces the compensation order required to achieve a given reconstruction accuracy. Also, under the band-limited assumption, the proposed method achieves perfect reconstruction if no constraints are imposed on the order of the compensation. Simulation results show that a rough estimate of the input spectrum can be used without much performance loss, showing that an accurate knowledge of the input spectrum is not necessarily required.