167 citations · 577 across the 34 of their papers we have counts for
14 papers · 1 filter
User Scheduling and Power Allocation for Precoded Multi-Beam High Throughput Satellite Systems with Individual Quality of Service Constraints
Trinh Van Chien, Eva Lagunas, Tung Hai Ta +2
For extensive coverage areas, multi-beam high throughput satellite (MB-HTS) communication is a promising technology that plays a crucial role in delivering broadband services to ma…
Simultaneous Control Information and Power Transmission for Reconfigurable Intelligent Surfaces
Steven Kisseleff, Konstantinos Ntontin, Wallace A. Martins +2
Reconfigurable intelligent surfaces (RISs) are planar structures with attached electronic circuitry that enable a partially programmable communication environment. RIS operation ca…
Reconfigurable Intelligent Surface-Assisted Massive MIMO: Favorable Propagation, Channel Hardening, and Rank Deficiency
Trinh Van Chien, Hien Quoc Ngo, Symeon Chatzinotas +1
Massive multiple-input multiple-output (MIMO) and reconfigurable intelligent surface (RIS) are two promising technologies for 5G-and-beyond wireless networks, capable of providing…
On the Optimality of the Stationary Solution of Secrecy Rate Maximization for MIMO Wiretap Channel
Anshu Mukherjee, Vaibhav Kumar, Eduard Jorswieck +2
To achieve perfect secrecy in a multiple-input multiple-output (MIMO) Gaussian wiretap channel (WTC), we need to find its secrecy capacity and optimal signaling, which involves sol…
Uplink Power Control in Massive MIMO with Double Scattering Channels
Trinh Van Chien, Hien Quoc Ngo, Symeon Chatzinotas +2
Massive multiple-input multiple-output (MIMO) is a key technology for improving the spectral and energy efficiency in 5G-and-beyond wireless networks. For a tractable analysis, mos…
Outage Probability Analysis of IRS-Assisted Systems Under Spatially Correlated Channels
Trinh Van Chien, Anastasios K. Papazafeiropoulos, Lam Thanh Tu +3
This paper investigates the impact of spatial channel correlation on the outage probability of intelligent reflecting surface (IRS)-assisted single-input single-output (SISO) commu…
On the Secrecy Capacity of MIMO Wiretap Channels: Convex Reformulation and Efficient Numerical Methods
Anshu Mukherjee, Björn Ottersten, Le-Nam Tran
This paper presents novel numerical approaches to finding the secrecy capacity of the multiple-input multiple-output (MIMO) wiretap channel subject to multiple linear transmit cova…
Transfer Learning and Meta Learning Based Fast Downlink Beamforming Adaptation
Yi Yuan, Gan Zheng, Kai-Kit Wong +2
This paper studies fast adaptive beamforming optimization for the signal-to-interference-plus-noise ratio balancing problem in a multiuser multiple-input single-output downlink sys…
Radio Resource Management Techniques for Multibeam Satellite Systems
Steven Kisseleff, Eva Lagunas, Tedros Salih Abdu +2
Next-generation of satellite communication (SatCom) networks are expected to support extremely high data rates for a seamless integration into future large satellite-terrestrial ne…
Coverage Probability and Ergodic Capacity of Intelligent Reflecting Surface-Enhanced Communication Systems
Trinh Van Chien, Lam Thanh Tu, Symeon Chatzinotas +1
This paper studies the performance of a single-input single-output (SISO) system enhanced by the assistance of an intelligent reflecting surface (IRS), which is equipped with a fin…
NOMA-Enabled Multi-Beam Satellite Systems: Joint Optimization to Overcome Offered-Requested Data Mismatches
Anyue Wang, Lei Lei, Eva Lagunas +3
Non-Orthogonal Multiple Access (NOMA) has potentials to improve the performance of multi-beam satellite systems. The performance optimization in satellite-NOMA systems can be diffe…
Random Access based Reliable Uplink Communication and Power Transfer using Dynamic Power Splitting
Steven Kisseleff, Symeon Chatzinotas, Björn Ottersten
Large communication networks, e.g. Internet of Things (IoT), are known to be vulnerable to co-channel interference. One possibility to address this issue is the use of orthogonal m…
Trajectory Design for Energy Minimization in UAV-enabled Wireless Communications with Latency Constraints
Dinh-Hieu Tran, Thang X. Vu, Symeon Chatzinotas +2
This paper studies energy-efficient unmanned aerial vehicle (UAV)-enabled wireless communications, where the UAV acts as a flying base station (BS) to serve the ground users (GUs)…
Energy-Efficient Multi-Cell Multigroup Multicasting with Joint Beamforming and Antenna Selection
Oskari Tervo, Le-Nam Tran, Harri Pennanen +3
This paper studies the energy efficiency and sum rate trade-off for coordinated beamforming in multi-cell multi-user multigroup multicast multiple-input single-output systems. We f…