Fig. 6
From: Modeling and performance analysis for mobile cognitive radio cellular networks
a–c CHT statistics as a function of the interruption probability for different distributions of the UST when CDT is hyper-exponentially distributed. In this figure, red, blue, yellow, and green lines represent the scenarios where the UST is exponentially, Erlang, hyper-exponentially of order 2, and hyper-Erlang of order (2, 2) distributed, respectively. Solid-lines (dashed-lines) corresponds to CHTn (CHTh) statistics