Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Transmission Line Design Considerations

Transmission Line Design Considerations

Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...

Maximum Power Transfer

Maximum Power Transfer

Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...

Reducing Line Loss

Reducing Line Loss

In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...

Receiver Operating Characteristic Plot

Receiver Operating Characteristic Plot

A ROC (Receiver Operating Characteristic) plot is a graphical tool used to assess the performance of a binary classification model by illustrating the trade-off between sensitivity (true positive rate) and specificity (false positive rate). By plotting sensitivity against 1 - specificity across various threshold settings, the ROC curve shows how well the model distinguishes between classes, with a curve closer to the top-left corner indicating a more accurate model. The area under the ROC curve...

Carrier Generation and Recombination

Carrier Generation and Recombination

Carrier generation is the process by which electron-hole pairs (EHPs) are created within the semiconductor. In direct-bandgap semiconductors, such as gallium arsenide (GaAs), this occurs efficiently when energy absorption prompts valence electrons to leap into the conduction band, leaving behind holes.
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...

Mesh Analysis for AC Circuits

Mesh Analysis for AC Circuits

In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Evolutionary applications of electrical stimulation in bone repair: bibliometric trends and temporal dynamics.

EFORT open reviews·2026

Same author

Exosomal Oleic Acid Promotes Lymphangiogenesis and Nodal Metastasis in Cervical Cancer via the AKT/mTOR Pathway.

Journal of extracellular vesicles·2026

Same author

Two decades of AI-driven motion capture in rehabilitation: Mapping research networks, thematic hotspots, and future trajectories.

Digital health·2026

Same author

Effect of High-Fat Meal on the Pharmacokinetics and Safety of Lansoprazole Enteric-Coated Capsules in Healthy Chinese Subjects.

Clinical pharmacology in drug development·2026

Same author

An injectable, rapidly photo-crosslinkable hybrid hydrogel with temporally coordinated release and attenuation of inflammatory activation for potential extraction socket management.

Biomaterials advances·2026

Same author

Apical Periodontitis May Exacerbate Ulcerative Colitis via Neutrophil Extracellular Trap-Mediated Systemic Inflammation and Intestinal Barrier Disruption in Mice.

International endodontic journal·2026

Same journal

Correction: Kang et al. Fluid Flow to Electricity: Capturing Flow-Induced Vibrations with Micro-Electromechanical-System-Based Piezoelectric Energy Harvester. <i>Micromachines</i> 2024, <i>15</i>, 581.

Micromachines·2026

Same journal

Femtosecond Laser Texturing of Wood Coatings with Bio-Based Epoxy and Wax Additives for Enhanced Hydrophobicity.

Micromachines·2026

Same journal

Engineering of Optoelectronic Devices for Renewable Energy Applications.

Micromachines·2026

Same journal

Phase Transformation and Electrochemical Behavior of Hexagonal TiO<sub>2</sub> Nanotubes Under Different Annealing Temperatures and Heating Rates.

Micromachines·2026

Same journal

Process Optimization and Predictive Modeling of Femtosecond Laser Precision Milling for Commercial PMMA Slices.

Micromachines·2026

Same journal

A Hybrid Preprocessing Multi-Objective Surrogate Model for Thermal MEMS Actuators.

Micromachines·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Aug 8, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Transceiver Optimization for mmWave Line-of-Sight MIMO Systems Using Hybrid Arrays.

Junwen Deng¹, Hang Li¹, Jian Andrew Zhang²

¹School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China.

|February 25, 2023

Summary

This summary is machine-generated.

Millimeter wave (mmWave) systems with hybrid planar subarrays enhance spectral efficiency and effective degree of freedom (EDoF) in line-of-sight (LOS) MIMO communications. These arrays offer superior robustness compared to traditional systems, overcoming previous performance limitations.

Keywords:

hybrid arrays line-of-sight multiple input multiple output quantization transceiver optimization

More Related Videos

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

Related Experiment Videos

Last Updated: Aug 8, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

Area of Science:

Wireless communication systems
Antenna array design
Signal processing

Background:

Millimeter wave (mmWave) communication systems offer high bandwidth but face challenges with signal propagation and array design.
Line-of-sight (LOS) multiple-input multiple-output (MIMO) systems are crucial for mmWave, but traditional arrays have performance limitations.
Hybrid arrays offer a potential solution to improve the performance of mmWave LOS MIMO systems.

Purpose of the Study:

To investigate the performance of mmWave LOS MIMO systems utilizing hybrid arrays of planar subarrays.
To characterize the spatial multiplexing gain using spectral efficiency and effective degree of freedom (EDoF).
To derive optimal design parameters and analyze their sensitivity for improved system performance.

Main Methods:

Development of a joint plane-wave and spherical-wave-based 3D channel model.
Derivation of optimal analog domain design parameters (subarray separation products).
Analytical eigenvalue expressions for the equivalent LOS MIMO channel matrix and EDoF bounds.
Design of a piecewise uniform quantization codebook for phase shifters.

Main Results:

Planar subarrays demonstrate superior spectral efficiency and EDoF compared to traditional arrays in Ricean fading channels.
Hybrid arrays of planar subarrays exhibit greater robustness to communication distance variations and deviations from optimal design.
The use of planar subarrays removes the conventional Rayleigh distance limitation for optimal performance in mmWave LOS MIMO systems.

Conclusions:

Hybrid arrays of planar subarrays represent a significant advancement for mmWave LOS MIMO systems.
These systems achieve higher performance and robustness, overcoming limitations of traditional array designs.
The proposed channel model and design parameters provide a framework for optimizing future mmWave communication systems.