Dr. Evangelos Vlachos
Tenure-track Researcher · ATHENA RC
Dr. Evangelos Vlachos
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Quantum Computing-Assisted Channel Estimation for Massive MIMO mmWave Systems
Quantum computing (QC)-assisted algorithms promise exponential increase in the computational efficiency, enabling instant solution of …
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DOI
Towards 6G: Spectrally efficient joint radar and communication with radio frequency selection, interference and hardware impairments
The joint radar‐comm unication (JRC) system is env isioned as an emerging sixth gener- ation (6G) technolog y to tack le spectral …
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DOI
New Paper: Joint bit allocation and hybrid beamforming optimization for energy efficient millimeter wave MIMO systems
The paper jointly optimizes digital-to-analog converter bit resolutions and hybrid beamforming matrices to achieve energy-efficient millimeter wave MIMO systems, introducing a novel decomposition of the hybrid precoder and combiner.
Mar 1, 2021
1 min read
Paper
New Paper: Energy-efficiency maximization of hybrid massive MIMO precoding with random-resolution DACs via RF selection
This research introduces a novel hybrid massive MIMO precoding architecture using random-resolution DACs and RF selection to maximize energy-efficiency while preserving spectral-efficiency.
Feb 1, 2021
1 min read
Paper
Energy-Efficiency Maximization of Hybrid Massive MIMO Precoding With Random-Resolution DACs via RF Selection
Energy-efficiency (EE) is identified as a key 5G metric and will have a major impact on the hybrid beam- forming system design. The most …
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DOI
Joint Bit Allocation and Hybrid Beamforming Optimization for Energy Efficient Millimeter Wave MIMO Systems
In this article, we aim to design highly energy efficient end-to-end communication for millimeter wave multiple- input multiple-output …
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DOI
New Paper: Privacy preservation in industrial IoT via fast adaptive correlation matrix completion
This study develops a fast adaptive method for completing correlation matrices in industrial IoT networks, preserving privacy by adding noise that maximizes uncertainty while maintaining structural information.
Dec 1, 2020
1 min read
Paper
New Paper: Radio-frequency chain selection for energy and spectral efficiency maximization in hybrid beamforming under hardware imperfections
Researchers develop an algorithm to optimize radio-frequency chain selection for efficient wireless transmission while minimizing hardware imperfections.
Dec 1, 2020
1 min read
Paper
New Paper: Joint localization and channel estimation for UAV-assisted millimeter wave communications
This research develops a novel joint localization and channel estimation framework for UAV-assisted mmWave communications, enabling accurate positioning and MIMO channel coefficient estimation through beam-space representation and matrix completion.
Nov 1, 2020
1 min read
Paper
New Paper: Energy efficiency maximization in millimeter wave hybrid MIMO systems for 5G and beyond
A novel energy-efficient beamformer maximizes millimeter wave hybrid MIMO system performance by optimizing DAC resolution and RF chain selection using Dinkelbach method and subset selection optimization.
Oct 27, 2020
1 min read
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