Canonical and quasi-canonical probability models of class A interference

It is pointed out that most electromagnetic interference (EMI) phenomena include highly non-Gaussian random processes, whose effects on telecommunication system performance can be severely degrading. In this connection, attention has been given to the development of methods for operating telecommunication equipment in EMI environments. Middleton (1953, 1979, 1981) has developed various forms of canonical interference models. Berry (1980, 1981) has shown that the earlier so-called 'strictly canonical' forms do not cover all situations of practical importance. It is the principal aim of the present investigation to extend work conducted by Middleton (1977, 1979), to include additional source distributions, such as interfering sources at widely distributed distances. A second aim is to establish more precisely the conditions under which the earlier strictly canonical form can still be employed with ignorable error.