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Author

Ke-Feng Guo

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Open access 2026

Covert Communication in Integrated Satellite Aerial Terrestrial Networks: A NOMA-Enhanced Framework With Practical Constraints

Integrated satellite aerial terrestrial networks (ISATNs) are characterized by their wide-area coverage, which, while enabling massive connectivity, also renders the network more vulnerable to eavesdropping attacks. This inherent security threat necessitates the design of covert communication (CC) schemes to safeguard...

Qi Li, Pei-Lin Qi, Ke-Feng Guo et al. · 0 citations
Open access Sep 2026

Covert Communication for NOMA-Based Integrated Satellite-Terrestrial Networks

This paper conducts the covert performance analysis of NOMA-enabled integrated satellite-terrestrial networks (ISTNs) assisted by a random-power terrestrial jammer. By adopting shadowed Rician fading for satellite-ground links and Nakagami-m fading for jammer-user links, we first analyze the eavesdropper’s binary power...

Kejing Ying, Ke-Feng Guo, Shi-Bing Zhu et al. · 0 citations
2026

Hierarchical Resource Optimization for Covert SAGINs: A Stackelberg-Matching Game Approach

To strengthen the security of large-scale space-air-ground integrated networks (SAGINs), this paper investigates covert communication against non-cooperative ground base stations (BSs) that detect satellite transmissions via signal power monitoring. In this scenario, numerous low-earth-orbit (LEO) satellites deployed a...

Min Wu, Ke-Feng Guo, Theodoros A. Tsiftsis et al. · 0 citations
Conference Aug 2026

Downlink Hybrid Non-Orthogonal Multiple Access Energy Minimization Design for Ultra-Massive MIMO Near-Field Communications

This paper proposes a hybrid non-orthogonal multiple access (NOMA) framework for tacking the energy efficiency optimization problem of serving additional users with pre-configured beams in the near-field downlink of ultra-massive multiple-input multiple-output (MIMO) systems. This proposed approach formulates a resourc...

Jing Ye, Ke-Feng Guo, Guang-Xia Li et al. · 0 citations

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