EESS: An Energy-Efficient Spectrum Sensing Method by Optimizing Spectrum Sensing Node in Cognitive Radio Sensor Networks

Table 1

Table of notations.

Notation	Parameters
	The total number of nodes
	The number of SSNs
	SSNs ratio defined as
	The density of SSNs defined as
	The density of all nodes defined as
	Transmission radius of the network
	Transmission radius of SSNs