Cooperative jamming in downlink satellite network with hardware impairments

Abstract

In this article, a land mobile satellite communication network with an external jammer to fight against the eavesdropper is investigated, where the hardware impairments are introduced to make the analyses more practical. It is worth noting that three jamming schemes, that is, the Gaussian noise jamming, the friendly jamming, and the scheme without jamming, are taken into account to explore the effect of the jammer comprehensively. The secrecy metrics such as the connectivity outage probability (COP), the security outage probability, and the secrecy throughput (ST), are derived for the passive eavesdropping scenario, while the ergodic secrecy capacity is analyzed for the active eavesdropping scenario. Moreover, to get intuitive insight from the closed-form expressions, the asymptotic ST and the asymptotic COP under the condition of high signal-to-noise ratio are also considered. Finally, all the derivations are validated by Monte Carlo simulations, and the effects of different parameters on the performance of the network are analyzed.

Physical layer security of reconfigurable intelligent surface empowered wireless network with cooperative jammer

“…Since the COP expression derived in ( 14) is complicated, it is necessary to perform asymptotic analysis of the system at high SNR assuming 𝛾̅ 𝑆𝐷 → ∞ in order to understand the system performance. At high SNR, the asymptotic expression for the S-to-D CDF in ( 16) can be defined as [26]: (16) by putting ( 16) and ( 9) into ( 13), then the COP asymptotic expression can then be expressed as:…”

“…This is adopted in wireless communication system to measure the average rate of information that is transmitted reliably and securely. Mathematically, it is defined as the product of secrecy rate and the probabilities of reliability and security transmission as follows [26]: 3373…”

Secure transmission in smart grid dynamic wide area network by exploiting full‐duplex jamming scheme

“…This evaluates the average rate of information that are reliably and securely transmitted and can be mathematically defined as the product of secrecy rate and the probabilities of reliability and security of the transmission as follows 20 : $$$$ {\tau}_{ST}={R}_s{P}_{\mathrm{cop}\&\mathrm{sop}}, $$$$ where $$$$ {P}_{\mathrm{cop}\&\mathrm{sop}}=\left(1-{P}_{\mathrm{COP}}\right)\left(1-{P}_{\mathrm{SOP}}\right). $$$$ …”

“…To provide more insight about the network performance due to complexity of the derived COP expression in given (25), it necessary to conduct asymptotic analysis for the network at high SNR by assuming that 𝛾 RD → ∞. At high SNR, the asymptotic expression for the S-to-D CDF given in ( 12) can be defined as 20 :…”

“…This evaluates the average rate of information that are reliably and securely transmitted and can be mathematically defined as the product of secrecy rate and the probabilities of reliability and security of the transmission as follows 20 :…”