Satellite-based Internet of Things (IoT) is recognized as a cost-effective approach for global
access. In this article, we aim at improving the spectrum efficiency of satellite systems to …

Two of the main problems to achieve ultra-reliable low-latency communications (URLLC)
are related to instantaneous channel state information (I-CSI) acquisition and the …

In this letter, we investigate an intelligent reflecting surface (IRS) empowered robust secure
transmission approach for an integrated satellite and terrestrial network (ISTN) with multiple …

Intelligent reflecting surface (IRS), with a large number of reflective elements, is a promising
technology to achieve both spectrum and energy efficient wireless communication. The IRS …

Integrating non-orthogonal multiple access (NOMA) in intelligent reflecting surface (IRS) is
expectedly an effective solution to enhance system's spectrum efficiency. In this paper, we …

In this paper, we investigate hybrid beamforming, user scheduling, and resource allocation
optimization based on spectrum coexisting forward transmission in integrated terrestrial …

In this article, we investigate the issue of massive access in a beyond fifth-generation (B5G)
multibeam low-Earth orbit (LEO) satellite Internet-of-Things (IoT) network in the presence of …

Satellite Communication (SatCom) systems will be a key component of 5G and 6G networks
to achieve the goal of providing unlimited and ubiquitous communications and deploying …

In this paper, we investigate a geosynchronous earth orbit (GEO) and low earth orbit (LEO)
coexisting satellite communication system. To decrease the interference imposed on the …

This paper studies the beamforming design problem to achieve max-min fairness (MMF) in
multibeam satellite communications. Contrary to the conventional linear precoding (NoRS) …