An Analysis of the Privacy Threat in Vehicular Ad Hoc Networks due to Radio Frequency Fingerprinting

Table 2

Identifiers of the statistical features.

Statistical feature	Feature description	Related equation	Feature identifier
Variance	The variance is the mean squared variance of a distribution from its mean	Equation (3)	1
Skewness	The skewness characterizes the degree of asymmetry of a distribution around its mean	Equation (4)	2
Kurtosis	Kurtosis measures the relative peakedness or flatness of a distribution	Equation (5)	3
Shannon Entropy	Shannon Entropy is the expected value of the information contained in a signal based on the definition by Shannon	Equation (6)	4
Log Energy Entropy	Log Energy Entropy is the expected value of the information contained in a signal based on a logarithmic scale	Equation (7)	5