Covert Communication for Integrated Satellite–Terrestrial Relay Networks with Cooperative Jamming

Autor:	Zeke Wu, Kefeng Guo, Shibing Zhu
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	power allocation factor covert performance Computer Networks and Communications Hardware and Architecture Control and Systems Engineering Signal Processing integrated satellite–terrestrial relay networks Electrical and Electronic Engineering cooperative jamming
Zdroj:	Electronics Volume 12 Issue 4 Pages: 999
ISSN:	2079-9292
DOI:	10.3390/electronics12040999
Popis:	We explore the influence of cooperative jamming on covert communication for integrated satellite–terrestrial relay networks (ISTRN) in this article, where one full-duplex relay is utilized to support communications and acts as a jammer to confuse eavesdroppers. A cooperative scheme is first proposed to efficiently achieve covert communication in this specific scenario. Further, the probability of detection error (PDE) is derived. Subsequently, the minimum PDE is calculated using the optimal detection threshold. Moreover, a closed-form expression of outage probability (OP) is acquired to quantify the system’s covert performance. Based on this, we design a power optimization algorithm to enhance the effective covert rate under covertness constraints. Lastly, numerical simulation results are given to verify the efficiency of our cooperative jamming scheme when interrupting the eavesdroppers. Notably, an optimal power allocation factor can be obtained, leading to a higher effective covert rate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e9d258af5ad7d4cf03f87b5aa1c40d9 Zobrazit plný text záznamu