Simple approach to nonlinear prediction

A simple procedure for improving linear prediction is presented. A zero mem ory nonlinear step at the output of the linear predictor may be adequate to obtain significant improvements. Two techniques are proposed for designing the nonlinearity, the object of each being to achieve the conditional mean of the nonlinear prediction given the linear one. The technique is applied to improve the signal-to-noise ratio in the automatic detection of lire by infrared signal processing.