English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Emerging intelligent reflecting surfaces (IRSs) significantly improve systemperformance, while also pose a huge risk for physical layer security. A discoIRS (DIRS), i.e., an illegitimate IRS with random time-varying reflectionproperties, can be employed by an attacker to actively age the channels oflegitimate users (LUs). Such active channel aging (ACA) generated by theDIRS-based fully-passive jammer (FPJ) can be applied to jam multi-usermultiple-input single-output (MU-MISO) systems without relying on eitherjamming power or LU channel state information (CSI). To address the significantthreats posed by the DIRS-based FPJ, an anti-jamming strategy is proposed thatrequires only the statistical characteristics of DIRS-jammed channels insteadof their CSI. Statistical characteristics of DIRS-jammed channels are firstderived, and then the anti-jamming precoder is given based on the derivedstatistical characteristics. Numerical results are also presented to evaluatethe effectiveness of the proposed anti-jamming precoder against the DIRS-basedFPJ.

An Anti-Jamming Strategy for Disco Intelligent Reflecting Surfaces Based Fully-Passive Jamming Attacks