Reliability‐Security Trade‐Off Analysis of Cognitive Radio Networks with Jamming and Licensed Interference

Abstract

Cognitive radio networks (CRNs) allow coexistence of unlicensed users (UUs) and licensed users (LUs) and hence, mutual interference between UUs and LUs is neither ignored nor considered as Gaussian-distributed quantity. Additionally, exploiting jamming signals to purposely interfere with signal reception of eavesdroppers is a feasible solution to improve security performance of CRNs. This paper analyzes reliability-security trade-off, which accounts for maximum transmit power constraint, interference power constraint, jamming signal, and Rayleigh fading, and considers interference from LUs as non-Gaussian-distributed quantity. Toward this end, exact closed-form expressions of successful detection probability and successful eavesdropping probability, from which reliability-security trade-off is straightforwardly visible, are first suggested and then validated by Monte-Carlo simulations. Various results demonstrate that interference from LUs considerably decreases both probabilities while jamming signal enlarges the difference between them, emphasizing its effectiveness in improving security performance.

Relay Selection for Security Improvement in Cognitive Radio Networks with Energy Harvesting

“…The function Λðb, c, g, lÞ has an accurate closed form as ( [42], eq. ( 19)) by setting the argument a of ( [42], eq. ( 19)) to zero.…”

Secrecy outage analysis of energy harvesting two‐way relaying networks with friendly jammer

“…Other publications without mentioning all three characteristics (EH, TWR, PLS) of wireless networks should not be surveyed (e.g. [9][10][11][12][13][14][15][16][17][18] should not be reviewed because they did not mention EH in their system models).…”

“…Meanwhile, S 1 , S 2 , and J can cooperate with each other [Following the widely accepted assumption in various publications (e.g. [10,[13][14][15][16][17][18]26]), this paper also assumes that the relay and two sources have the knowledge of jamming signals. This can be feasibly implemented by, for instance, sharing the seed of the random noise generator in a secure manner among the relay and two sources, or using some pseudo-random codes which are known to the relay and two sources but not open to the eavesdropper.].…”