NONLINEAR STATISTICAL SIGNAL PROCESSOR

A signal processor is for receiving an input signal y. The input signal y has in it a signal x and has a conditional density function, given that the signal x is present, p(y.vertline.x). The signal processor includes a memory for storing the amplitude-density-function of the signal x, p(x). The memory is coupled to the processor input so that the memory is addressed by the input signal y. An amplitude-density-function generator is coupled to the processor input and to the memory generates the product of the conditional density function p(y.vertline.x) and the density function p(x). The processor of the invention also includes apparatus for detecting the peak of that product.