Reconstruction of Nonuniformly Sampled Bandlimited Signals Using Digital Fractional Delay Filters: Error and Quantization Noise Analysis

This paper deals with the problem of reconstructing nonuniformly sampled bandlimited signals. This problem arises in, e.g., time-interleaved analog-to-digital converter (ADC) systems due to time-skew errors. A synthesis system composed of (ideal) digital fractional delay filters for the reconstruction was recently proposed in [1]. In this paper, we briefly recapitulate the theory and continue with error and quantization noise analysis. The results of the error analysis are useful in the filter design (when optimizing practical digital filters that approximate the ideal ones) and quantization noise analysis.