Dr. Evangelos Vlachos
Tenure-track Researcher · ATHENA RC
Dr. Evangelos Vlachos
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6G
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
A Hardware Architecture For Reconfigurable Intelligent Surfaces with Minimal Active Elements for Explicit Channel Estimation
Intelligent surfaces comprising of cost effective, nearly pas- sive, and reconfigurable unit elements are lately gaining in- creasing …
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DOI
Joint Localization and Channel Estimation for UAV-Assisted Millimeter Wave Communications
In this paper, we consider millimeter Wave (mmWave) communications between an Unmanned Aerial Ve- hicle (UA V) and a base station. By …
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DOI
Radio-frequency chain selection for energy and spectral efficiency maximization in hybrid beamforming under hardware imperfections
The next-generation wireless communications require reduced energy consumption, increased data rates and better signal coverage. The …
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DOI
Wideband Channel Tracking for Millimeter Wave Massive Mimo Systems with Hybrid Beamforming Reception
Millimeter Wave (mmWave) massive Multiple Input Multi- ple Output (MIMO) channel tracking is a challenging task with Hybrid analog and …
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DOI
Dynamic RF Chain Selection for Energy Efficient and Low Complexity Hybrid Beamforming in Millimeter Wave MIMO Systems
This paper proposes a novel architecture with a framework that dynamically activates the optimal number of radio frequency (RF) chains …
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DOI
Energy Efficiency Maximization of Millimeter Wave Hybrid MIMO Systems with Low Resolution DACs
This paper proposes an energy efficient millimeter wave (mmW ave) hybrid multiple-input multiple-output (MIMO) beamformer with low …
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DOI
Energy Efficient ADC Bit Allocation and Hybrid Combining for Millimeter Wave MIMO Systems
Low resolution analog-to-digital converters (ADCs) can be employed to improve the energy efficiency (EE) of a wireless receiver since …
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DOI
Energy Efficient Transmission of 3D Meshes Over MMWave-Based Massive MIMO Systems
Many mixed reality applications are b ased on the real-time compression and streaming of three-dimensional (3D) mod els. Thus, they …
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DOI
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