On signal detection parameters for energy detection based carrier sense in LPWANs

Abstract

This study investigates the characteristics of signal detection parameters, such as target signal detection probability and false alarm probability of an energy detection based carrier sense, which can effectively avoid interferences in the same frequency band, in low power wide area networks (LPWANs). The aforementioned target probabilities strongly affect the characteristics of energy detection and its application, and revealing the characteristics that enhance the performance of energy detection based carrier sense is important. Two types of numerical example based analysis are presented from the viewpoints of signal detection and wireless networks. The analytical results show the presence of an optimal target false alarm probability.