9 papers
Uplink MIMO Performance Analysis for Diverse HAPS Antenna Array Architectures
Shasha Liu, Abla Kammoun, Mohamed-Slim Alouini
High-altitude platform stations (HAPS) are promising components of 6G and beyond networks, where antenna array configuration is critical for achieving wide-area coverage and high c…
Three-Dimensional Spatial Correlation Modeling for Cylindrical mMIMO Arrays in HAPS
Shasha Liu, Abla Kammoun, Mohamed-Slim Alouini
High-altitude platform stations (HAPS) are envisioned as a key component of future wireless networks, enabling ultra-wide coverage and providing direct connectivity to users with c…
CRB-Based Resource Allocation in Multi-User Uplink Transmissions
Xue Zhang, Abla Kammoun, Mohamed-Slim Alouini
In this work, we study the design of receivers for uplink multi-user systems, aiming to estimate both the channel and the transmitted symbols. We consider two estimation strategies…
Sum Rate and Worst Case SINR Optimization in Multi HAPS Ground Integrated Networks
Shasha Liu, Hayssam Dahrouj, Abla Kammoun +1
Balancing throughput and fairness promises to be a key enabler for achieving large-scale digital inclusion in future vertical heterogeneous networks (VHetNets). In an attempt to ad…
Optical Intelligent Reflecting Surfaces Empowering Non-Terrestrial Communications
Shunyuan Shang, Emna Zedini, Abla Kammoun +1
In this work, we propose an innovative system that combines high-altitude platforms (HAPs) and optical intelligent reflecting surfaces (OIRS) to address line-of-sight (LOS) challen…
Asymptotic Analysis of One-bit Quantized Box-Constrained Precoding in Large-Scale Multi-User Systems
Xiuxiu Ma, Abla Kammoun, Mohamed-Slim Alouini +1
This paper addresses the design of multi-antenna precoding strategies, considering hardware limitations such as low-resolution digital-to-analog converters (DACs), which necessitat…