Let be a bandlimited signal with fixed bandwidth B and variance
(a) Show that the signal-to-quantization noise ratio, in-creases by 3 dB each time we double the sampling frequency Assume that the quantization noise model discussed in Section 6.3.3 is valid.
(b) If we wish to increase the SQNR of a quantizer by doubling its sampling fre-quency, what is the most efficient way to do it? Should we choose a linear multibit A/D converter or an oversampling one?
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