Securing Cooperative Spectrum Sensing against DC-SSDF Attack Using Trust Fluctuation Clustering Analysis in Cognitive Radio Networks

Table 1

Abbreviations used in this paper.

Abbreviations	Explanation
CSS	Cooperative spectrum sensing
SU	Secondary user
C	Set of Cooperating SUs
	The i-th SU
PU	Primary user
SSDF	Spectrum sensing data falsification
DC-SSDF	Dynamic-collusive SSDF
TFCA	Trust fluctuation clustering analysis
FC	Fusion center
	DC-SSDF samples
	Honest samples
	Set of DC-SSDF attackers
	Set of honest SUs