Multirate Digital Signal Processing
Multirate Digital Signal Processing
Rate conversion of MPEG coded video by re-quantization process
ICIP '95 Proceedings of the 1995 International Conference on Image Processing (Vol. 3)-Volume 3 - Volume 3
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
Handbook of Mathematical Functions, With Formulas, Graphs, and Mathematical Tables,
IEEE Transactions on Signal Processing
On the autocorrelation function of quantized signal plus noise
IEEE Transactions on Information Theory
Decorrelation of quantized signals induced by filtering and requantization
Digital Signal Processing
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A theoretical analysis, aimed at characterizing the degradation induced by the resampling and requantization processes applied to band-limited Gaussian signals with flat power spectrum, available through their digitized samples, is presented. The analysis provides an efficient algorithm for computing the complete joint bivariate discrete probability distribution associated with the true quantized version of the Gaussian signal and with the quantity estimated after resampling and requantization of the input digitized sequence. The use of Fourier transform techniques allows deriving approximate analytical expressions for the quantities of interest, as well as implementing their efficient computation. Numerical experiments are found to be in good agreement with the theoretical results, and confirm the validity of the whole approach.