Reconfigurable intelligent surfaces for wireless communications: Overview of hardware designs, channel models, and estimation techniques

M Jian, GC Alexandropoulos, E Basar… - Intelligent and …, 2022 - ieeexplore.ieee.org
The demanding objectives for the future sixth generation (6G) of wireless communication
networks have spurred recent research efforts on novel materials and radio-frequency front …

Union bound minimization approach for designing Grassmannian constellations

D Cuevas, J Álvarez-Vizoso, C Beltrán… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
In this paper, we propose an algorithm for designing unstructured Grassmannian
constellations for noncoherent multiple-input multiple-output (MIMO) communications over …

Differential data-aided beam training for RIS-empowered multi-antenna communications

K Chen-Hu, GC Alexandropoulos… - IEEE Access, 2022 - ieeexplore.ieee.org
The Reconfigurable Intelligent Surface (RIS) constitutes one of the prominent technologies
for the next generation of wireless communications. It is envisioned to enhance the signal …

Emergence of energy optimization in MIMO-OFDM communication system with hybrid teamwork-grasshopper optimization

HK Gopadi, PT Rao - Journal of Optical Communications, 2023 - degruyter.com
In the application of mobile multimedia and wireless communication system needs an
enormous amount of data. Due to the usage of a huge data rate, a superior amount of …

Multi-Level Signaling With Noncoherent SIMO Over a Rayleigh Channel

RK Mallik - IEEE Transactions on Wireless Communications, 2024 - ieeexplore.ieee.org
Multi-level signaling for a single-input multiple-output system over a Rayleigh fading
channel with noncoherent detection is considered. The decision rule for the optimum …

Simultaneous RIS tuning and differential data transmission for MISO OFDM wireless systems

K Chen-Hu, GC Alexandropoulos… - … 2022-2022 IEEE …, 2022 - ieeexplore.ieee.org
The Reconfigurable Intelligent Surfaces (RIS) constitute one of the prominent technologies
for the next generation of wireless communications. They are mainly envisioned to efficiently …

Multiplexing With Multi-Level ASK and Noncoherent MIMO in Rayleigh Fading

RK Mallik - IEEE Transactions on Communications, 2024 - ieeexplore.ieee.org
For an N t-input N r-output system, noncoherent reception of spatially multiplexed one-sided
L-level amplitude-shift keying symbols transmitted over a flat Rayleigh fading channel, with …

Diseños avanzados de constelaciones Grassmannianas para comunicaciones MIMO no-coherentes

D Cuevas Fernández - 2024 - repositorio.unican.es
This thesis focuses on Grassmannian constellation design for noncoherent multiple-input
multiple-output (MIMO) wireless communications in both single-user and multi-user …

Union bound minimization approach for designing grassmannian constellations

D Cuevas Fernández, J Álvarez Vizoso… - 2023 - repositorio.unican.es
In this paper, we propose an algorithm for designing unstructured Grassmannian
constellations for noncoherent multiple-input multiple-output (MIMO) communications over …