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Low-Resolution Scalar Quantization for Gaussian Sources and Absolute Error

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2 Author(s)
Marco, D. ; Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA ; Neuhoff, D.L.

This correspondence considers low-resolution scalar quantization for a memoryless Gaussian source with respect to absolute error distortion. It shows that slope of the operational rate-distortion function of scalar quantization is infinite at the point Dmax where the rate becomes zero. Thus, unlike the situation for squared error distortion, or for Laplacian and exponential sources with squared or absolute error distortion, for a Gaussian source and absolute error, scalar quantization at low rates is far from the Shannon rate-distortion function, i.e., far from the performance of the best lossy coding technique

Published in:

Information Theory, IEEE Transactions on  (Volume:53 ,  Issue: 3 )

Date of Publication:

March 2007

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