Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Carrier Generation and Recombination01:22

Carrier Generation and Recombination

835
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...
835
Design Example01:23

Design Example

375
The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
375
Carrier-Mediated Transport01:06

Carrier-Mediated Transport

564
Carrier-mediated transport is a pivotal process in drug absorption, particularly for lipid-insoluble drugs, and encompasses facilitated diffusion and active transport. Facilitated diffusion allows drugs to move along their concentration gradient without energy expenditure, while active transport utilizes ATP to drive drug movement against this gradient.
Active transport involves two types of membrane-spanning transporters: uptake and efflux. Uptake transporters are expressed in the small...
564
Mesh Analysis for AC Circuits01:12

Mesh Analysis for AC Circuits

430
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...
430
Maximum Power Transfer01:16

Maximum Power Transfer

430
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...
430
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

74.4K
Overview
74.4K

You might also read

Related Articles

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

Sort by
Same author

An Unsupervised Detection-to-Mitigation Framework for Resource Exhaustion Attacks in 5G/6G Network Slicing.

Sensors (Basel, Switzerland)·2026
Same author

Modeling the relationship between sensory attributes and liking using generalized additive mixed models: a case study of plant-based meat alternatives.

NPJ science of food·2026
Same author

Intratumoral spatiotemporal heterogeneity of HPV DNA status in HPV-associated oropharyngeal squamous cell carcinoma with clinical record.

Journal of translational medicine·2026
Same author

Biobanking of gynecologic cancer biospecimens: Development, quality control, and translational applications.

PloS one·2026
Same author

Enhancing cancer killing and natural killer cell persistence by targeting NOXA, a predictor of poor patient survival.

Molecular therapy. Oncology·2026
Same author

Germline functional variants contribute to neurodevelopmental trajectories in children with autism spectrum disorder or intellectual disability.

Progress in neuro-psychopharmacology & biological psychiatry·2026

Related Experiment Video

Updated: Sep 21, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.0K

Efficient User-Serving Scheme in the User-Centric Cell-Free Massive MIMO System.

Ji-Hye Oh1,2, Beom-Sik Shin1,2, Min-A Kim1,2

  • 1Department of Information and Communication Engineering, Sejong University, Seoul 05006, Korea.

Sensors (Basel, Switzerland)
|May 28, 2022
PubMed
Summary

This study introduces a novel scheme for user-centric cell-free massive MIMO systems, ensuring service for all users without extra access points. The proposed method enhances spectral efficiency and bit error rate performance, improving overall throughput.

Keywords:
5Gcell-free massive MIMOunserved usersuser-centric cell-free massive MIMO

More Related Videos

Integration of 5G Experimentation Infrastructures into a Multi-Site NFV Ecosystem
10:15

Integration of 5G Experimentation Infrastructures into a Multi-Site NFV Ecosystem

Published on: February 3, 2021

3.9K
Author Spotlight: Cistrome Analysis in Mouse Muscle Stem Cells
10:10

Author Spotlight: Cistrome Analysis in Mouse Muscle Stem Cells

Published on: July 7, 2023

2.6K

Related Experiment Videos

Last Updated: Sep 21, 2025

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

10.0K
Integration of 5G Experimentation Infrastructures into a Multi-Site NFV Ecosystem
10:15

Integration of 5G Experimentation Infrastructures into a Multi-Site NFV Ecosystem

Published on: February 3, 2021

3.9K
Author Spotlight: Cistrome Analysis in Mouse Muscle Stem Cells
10:10

Author Spotlight: Cistrome Analysis in Mouse Muscle Stem Cells

Published on: July 7, 2023

2.6K

Area of Science:

  • Wireless Communication Systems
  • Telecommunications Engineering
  • Signal Processing

Background:

  • Cell-free massive MIMO is a key technology for 5G and beyond, offering significant advantages.
  • Existing user-centric cell-free massive MIMO models struggle with scalability and ensuring service for all users as density increases.
  • High computational complexity remains a challenge for traditional cell-free massive MIMO systems.

Purpose of the Study:

  • To develop a scheme that provides connectivity for unserved users in a user-centric cell-free massive MIMO system.
  • To improve the performance of cell-free massive MIMO systems without requiring additional access point installations.
  • To enhance spectral efficiency, bit error rate (BER), and overall user throughput in dense network environments.

Main Methods:

  • Derivation of the downlink spectral efficiency formula for user-centric cell-free massive MIMO.
  • Application of a novel scheme and power control algorithm to the derived formula.
  • Simulation of a downlink user-centric cell-free massive MIMO model with geographically distributed access points and users.

Main Results:

  • The proposed scheme successfully eliminates unserved users within the coverage area.
  • Significant improvements in bit error rate (BER) performance and sum rate compared to existing schemes.
  • Demonstrated effectiveness even with a very large number of users, ensuring service for the worst-performing 10% and improving throughput for the bottom 70% of users.

Conclusions:

  • The proposed scheme effectively addresses the issue of unserved users in user-centric cell-free massive MIMO systems.
  • The method offers substantial performance gains in spectral efficiency, BER, and user throughput.
  • This approach provides a scalable and feasible solution for future wireless communication networks.