Quantization is a nonlinear process which generates additional frequency components (Thompson et al. 1986).
This means that the signal is no longer band-limited, so the Sampling Theorem no longer holds. If a signal is sampled at
the Nyquist Frequency, information will be lost. Therefore, sampling faster than the Nyquist Frequency results in
detection of more of the signal and a lower signal-to-noise ratio [SNR]. Let be the Oversampling ratio and define
Thompson, A. R.; Moran, J. M.; and Swenson, G. W. Jr. Fig. 8.3 in Interferometry and Synthesis in Radio Astronomy.
New York: Wiley, p. 220, 1986.