167 citations · 577 across the 34 of their papers we have counts for
36 papers
Multi-Domain Optimization Framework for ISAC: From Electromagnetic Shaping to Network Cooperation
Rang Liu, Ming Li, Mehdi Zafari +2
Integrated sensing and communication (ISAC) has emerged as a key feature for sixth-generation (6G) networks, providing an opportunity to meet the dual demands of communication and…
GNN-enabled Precoding for Massive MIMO LEO Satellite Communications
Huibin Zhou, Xinrui Gong, Christos G. Tsinos +3
Low Earth Orbit (LEO) satellite communication is a critical component in the development of sixth generation (6G) networks. The integration of massive multiple-input multiple-outpu…
Exploiting Symmetric Non-Convexity for Multi-Objective Symbol-Level DFRC Signal Design
Ly V. Nguyen, Rang Liu, Nhan Thanh Nguyen +3
Symbol-level precoding (SLP) is a promising solution for addressing the inherent interference problem in dual-functional radar-communication (DFRC) signal designs. This paper consi…
Channel-Coded Precoding for Multi-User MISO Systems
Ly V. Nguyen, Junil Choi, Bjorn Ottersten +1
Precoding is a critical and long-standing technique in multi-user communication systems. However, the majority of existing precoding methods do not consider channel coding in their…
Opportunities for Intelligent Reflecting Surfaces in 6G-Empowered V2X Communications
Wali Ullah Khan, Asad Mahmood, Arash Bozorgchenani +7
This paper first describes the introduction of 6G-empowered V2X communications and IRS technology. Then it discusses different use case scenarios of IRS enabled V2X communications…
Backscatter-Aided NOMA V2X Communication under Channel Estimation Errors
Wali Ullah Khan, Muhammad Ali Jamshed, Asad Mahmood +3
Backscatter communications (BC) has emerged as a promising technology for providing low-powered transmissions in nextG (i.e., beyond 5G) wireless networks. The fundamental idea of…
When RIS Meets GEO Satellite Communications: A New Sustainable Optimization Framework in 6G
Wali Ullah Khan, Eva Lagunas, Asad Mahmood +2
Reflecting intelligent surfaces (RIS) is a low-cost and energy-efficient solution to achieve high spectral efficiency in sixth-generation (6G) networks. The basic idea of RIS is to…
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…
Widely-distributed Radar Imaging Based on Consensus ADMM
Ruizhi Hu, Bhavani Shankar Mysore Rama Rao, Ahmed Murtada +2
A widely-distributed radar system is a promising architecture to enhance radar imaging performance. However, most existing algorithms rely on isotropic scattering assumption, which…
Multi-Antenna Data-Driven Eavesdropping Attacks and Symbol-Level Precoding Countermeasures
Abderrahmane Mayouche, Wallace A. Martins, Christos G. Tsinos +2
In this work, we consider secure communications in wireless multi-user (MU) multiple-input single-output (MISO) systems with channel coding in the presence of a multi-antenna eaves…
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…
System Modelling and Design Aspects of Next Generation High Throughput Satellites
Shree Krishna Sharma, Jorge Querol, Nicola Maturo +2
Future generation wireless networks are targeting the convergence of fixed, mobile and broadcasting systems with the integration of satellite and terrestrial systems towards utiliz…
Reconfigurable Intelligent Surfaces for Smart Cities: Research Challenges and Opportunities
Steven Kisseleff, Wallace A. Martins, Hayder Al-Hraishawi +2
The concept of Smart Cities has been introduced as a way to benefit from the digitization of various ecosystems at a city level. To support this concept, future communication netwo…
Short-Packet Communications for MIMO NOMA Systems over Nakagami-m Fading: BLER and Minimum Blocklength Analysis
Duc-Dung Tran, Shree Krishna Sharma, Symeon Chatzinotas +2
Recently, ultra-reliable and low-latency communications (URLLC) using short-packets has been proposed to fulfill the stringent requirements regarding reliability and latency of eme…
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…
Joint User Grouping, Scheduling, and Precoding for Multicast Energy Efficiency in Multigroup Multicast Systems
Ashok Bandi, Bhavani Shankar Mysore R, Symeon Chatzinotas +1
This paper studies the joint design of user grouping, scheduling (or admission control) and precoding to optimize energy efficiency (EE) for multigroup multicast scenarios in singl…