Threshold Signal Reception in Electromagnetic Interference Environments: Part II. Receiver Structures and Performance for Class A EMI Environments and Scenarios

摘要

In this second part of a continuing study, the specific problems of determining minimum detectable signals and maximum detection ranges for telecommunication receivers operating in highly nongaussian electromagnetic interference (EMI) environments, are examined in detail. Various characteristic models of Class A interference are developed, along with their EMI scenarios (namely, source distributions, propagation law, waveform structures and statistics). These are needed, in turn, to establish the analytical and quantitative forms of the optimum signal processing algorithms, particularly in the limiting threshold (weak-signal) cases considered here. Various modes of detection are employed: optimum (threshold) coherent and incoherent reception, and the important suboptimum coherent case of cross-correlation detection (well-known to be optimum for gaussian noise).