Optimizing the performance of a quantizer
William A. Struzinski · The Journal of the Acoustical Society of America · 1983
In a previous paper [W. A. Struzinski, IEEE Trans. Acoust., Speech, Signal Process. ASSP-30 (4), 668–671 (1982)], a mathematical model was developed to compute the ORing loss for a system composed of quantizers followed by an ORing device and an accumulator. The quantizer investigated was an eight level (3-bit) device spanning from the noise-only mean, m0 to m0+2σ. The subject paper examines different spans for the same 3-bit quantizer to determine the span that yields the optimal performance. It is determined that the optimal performance is obtained when the quantizer spans the range m0 to m0+3σ. The ORing loss and the input signal-to-noise ratio requirements for the ORing device are computed for this quantizer. Then, these results are compared with those for the quantizer spanning the range m0 to m0+2σ. Based on this comparison, it is concluded that the performance difference increases with a decrease in the false alarm probability and the number of samples in the accumulator and with an increase in the number of channels ORed.