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

Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

127
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
127
Relative Motion Analysis - Acceleration01:10

Relative Motion Analysis - Acceleration

401
A slider-crank mechanism converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider. The movement of the slider-crank is an example of general plane motion as the fluctuating angle between the crank and the connecting rod. Consider a segment AB where point A is at the end of the slider and point B is on the diametrically opposite end to point A, on a crack. The variance in...
401
Relative Motion Analysis using Rotating Axes - Acceleration01:22

Relative Motion Analysis using Rotating Axes - Acceleration

378
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
Time differentiation is...
378
Propagation of Uncertainty from Systematic Error01:10

Propagation of Uncertainty from Systematic Error

750
The atomic mass of an element varies due to the relative ratio of its isotopes. A sample's relative proportion of oxygen isotopes influences its average atomic mass. For instance, if we were to measure the atomic mass of oxygen from a sample, the mass would be a weighted average of the isotopic masses of oxygen in that sample. Since a single sample is not likely to perfectly reflect the true atomic mass of oxygen for all the molecules of oxygen on Earth, the mass we obtain from this...
750

You might also read

Related Articles

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

Sort by
Same author

Novel strategies for mitigating hepatic ischemia-reperfusion injury: targeting MICU1 and calcium-glycolytic homeostasis with acteoside.

International journal of biological sciences·2026
Same author

Spatial-quantitative profiling of intrahepatic HBsAg heterogeneity and clustered distribution in chronic HBV infection.

JHEP reports : innovation in hepatology·2026
Same author

NUDT7 Modulates the UBA52-SREBF1 Signaling Axis to Promote PRRSV Replication via Lipid Synthesis.

International journal of biological sciences·2026
Same author

Precise subcellular organelle-targeted analyses of hepatotoxicity of <i>Polygonum multiflorum</i>.

Chinese herbal medicines·2026
Same author

Robust Low-Complexity WMMSE Precoding Under Imperfect CSI with Per-Antenna Power Constraints.

Sensors (Basel, Switzerland)·2026
Same author

Recent advances in structural and functional diversities of cancer lncRNA-encoded peptides: current opportunities and challenges for enhancing cancer diagnosis and treatment.

Cancer cell international·2026

Related Experiment Video

Updated: Aug 25, 2025

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
09:57

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

Published on: July 25, 2022

4.0K

Accelerated PARAFAC-Based Channel Estimation for Reconfigurable Intelligent Surface-Assisted MISO Systems.

Haoqi Xiao1, Honggui Deng1, Aimin Guo1

  • 1School of Physics and Electronics, Central South University, Lushan South Road, Changsha 410083, China.

Sensors (Basel, Switzerland)
|October 14, 2022
PubMed
Summary
This summary is machine-generated.

We developed an Accelerated Bilinear Alternating Least Squares (ABALS) algorithm for faster and more accurate channel estimation in reconfigurable intelligent surface (RIS)-assisted MISO systems. This method significantly reduces iterations compared to traditional ALS, maintaining high accuracy.

Keywords:
PARAFAC decompositionchannel estimationreconfigurable intelligent surface

More Related Videos

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
06:25

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

8.5K
Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

8.1K

Related Experiment Videos

Last Updated: Aug 25, 2025

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy
09:57

Multiplex Chemical Imaging Based on Broadband Stimulated Raman Scattering Microscopy

Published on: July 25, 2022

4.0K
Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform
06:25

Time Multiplexing Super Resolving Technique for Imaging from a Moving Platform

Published on: February 12, 2014

8.5K
Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
05:57

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

8.1K

Area of Science:

  • Wireless communication
  • Signal processing
  • Optimization algorithms

Background:

  • Reconfigurable intelligent surfaces (RIS) offer enhanced wireless communication by controlling signal propagation.
  • Accurate channel estimation is critical for the performance of RIS-assisted MISO systems.
  • Existing methods like Alternating Least Squares (ALS) can be computationally intensive.

Purpose of the Study:

  • To propose a novel, accelerated algorithm for fast and accurate channel estimation in RIS-MISO systems.
  • To improve the efficiency of channel estimation without sacrificing accuracy.
  • To provide insights into receiver design for unique channel estimation.

Main Methods:

  • Developed an Accelerated Bilinear Alternating Least Squares (ABALS) algorithm.
  • Utilized parallel factor decomposition to model the received signal as a tensor.
  • Transformed the channel estimation into a cost function problem solvable via iterative optimization and linear interpolation.
  • Derived receiver design strategies based on feasibility conditions.

Main Results:

  • The ABALS algorithm demonstrates a faster estimation speed compared to the standard ALS algorithm.
  • ABALS requires fewer iteration steps than ALS for convergence.
  • The accuracy of ABALS is comparable to that of the ALS algorithm.
  • The proposed receiver design strategy ensures the uniqueness of the channel estimation.

Conclusions:

  • The ABALS algorithm provides a significant improvement in speed and efficiency for channel estimation in RIS-MISO systems.
  • The method offers a practical solution for real-time applications requiring rapid channel estimation.
  • The study contributes to the advancement of efficient signal processing techniques for intelligent wireless environments.