Some Practical Limitations on the Use of Perturbation Signals for Resolution Enhancement

The application of a triangular perturbation signal as a means of improving the resolution of quantizers is discussed. The particular problems which occur with digital processing are examined. Inaccuracies caused by discrete sampling, and imprecise triangle wave amplitude are investigated, and relationships which bound the errors caused by these factors are established. These relationships are useful in designing the resolution-enhancement system.