Linear and non-linear processes

Abstract

In communications engineering there is theoretically — as I have already pointed out — an infinite number of signal processes. This is another good example that clearly demonstrates the discrepancy between theory and practice because only roughly two or three dozen of these processes are usable and of relevance for practical work. This number roughly corresponds to the number of letters in our alphabet. As we have learned to read and write by using letters and words in a meaningful way we should not have any problems doing the same with the relevant processes in signalling.