Active Reconfigurable Repeater-Assisted NOMA Networks in Internet-of-Things: Reliability, Security, and Covertness

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F25%3A10257534" target="_blank" >RIV/61989100:27240/25:10257534 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989100:27740/25:10257534

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/10766410" target="_blank" >https://ieeexplore.ieee.org/document/10766410</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/JIOT.2024.3503278" target="_blank" >10.1109/JIOT.2024.3503278</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Active Reconfigurable Repeater-Assisted NOMA Networks in Internet-of-Things: Reliability, Security, and Covertness

Popis výsledku v původním jazyce

In the present paper, we describe a novel active reconfigurable repeater-aided non-orthogonal multiple access networks within the context of the Internet of Things. The study focuses on a scenario, where a source simultaneously transmits public information to an untrusted user and a covert signal to a legitimate user in the surveillance of an external warden or eavesdropper. We develop comprehensive analytical and optimization frameworks to evaluate the reliability, security, and covertness of the proposed system&apos;s performance, measuring three respective key metrics: outage probability (OP), secrecy OP (SOP), and detection error probability (DEP). First, we derive exact closed-form and asymptotic expressions for OP, SOP in internal and external eavesdropping scenarios, and DEP in external monitoring situations. Based on an asymptotic analysis of the OP, we propose two optimization methods for power allocation (PA) to achieve fairness in outage among users: a convex approximation method and an approximate closed-form solution. We then introduce an alternative method for optimizing PA to improve SOP in both eavesdropping scenarios while maintaining minimal OP requirements. In addition, we propose an effective approach for determining the warden&apos;s detection threshold to minimize the DEP, with low complexity and fast convergence, thereby improving communications covertness. Finally, we validate the theoretical and optimization frameworks through extensive Monte-Carlo simulations, exploring the impact of key system parameters on each performance metric. © 2014 IEEE.

Název v anglickém jazyce

Active Reconfigurable Repeater-Assisted NOMA Networks in Internet-of-Things: Reliability, Security, and Covertness

Popis výsledku anglicky

In the present paper, we describe a novel active reconfigurable repeater-aided non-orthogonal multiple access networks within the context of the Internet of Things. The study focuses on a scenario, where a source simultaneously transmits public information to an untrusted user and a covert signal to a legitimate user in the surveillance of an external warden or eavesdropper. We develop comprehensive analytical and optimization frameworks to evaluate the reliability, security, and covertness of the proposed system&apos;s performance, measuring three respective key metrics: outage probability (OP), secrecy OP (SOP), and detection error probability (DEP). First, we derive exact closed-form and asymptotic expressions for OP, SOP in internal and external eavesdropping scenarios, and DEP in external monitoring situations. Based on an asymptotic analysis of the OP, we propose two optimization methods for power allocation (PA) to achieve fairness in outage among users: a convex approximation method and an approximate closed-form solution. We then introduce an alternative method for optimizing PA to improve SOP in both eavesdropping scenarios while maintaining minimal OP requirements. In addition, we propose an effective approach for determining the warden&apos;s detection threshold to minimize the DEP, with low complexity and fast convergence, thereby improving communications covertness. Finally, we validate the theoretical and optimization frameworks through extensive Monte-Carlo simulations, exploring the impact of key system parameters on each performance metric. © 2014 IEEE.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20203 - Telecommunications

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

IEEE Internet of Things Journal

ISSN

2327-4662

e-ISSN

2327-4662

Svazek periodika

12

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

14

Strana od-do

8759-8772

Kód UT WoS článku

001453366200029

EID výsledku v databázi Scopus

2-s2.0-85210921512