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619 Results Found

  • Article
  • Open Access
6 Citations
3,455 Views
20 Pages

5 March 2020

P2V (pedestrian-to-vehicle) communication, in which a pedestrian’s mobile device notifies its position to nearby vehicles in order to prevent pedestrian accidents, has attracted much research interest recently, but its performance largely depen...

  • Article
  • Open Access
268 Views
22 Pages

5 December 2025

Accurate estimation of lithium-ion battery (LIB) state of health (SOH) is critical for prolonging battery life and ensuring safe operation. To address the limitations of existing data-driven models in robustness and feature coupling, this paper prese...

  • Article
  • Open Access
2 Citations
5,828 Views
14 Pages

MIMO Channel-State Estimation in the Presence of Partial Data and/or Intermittent Measurements

  • Marco Donald Migliore,
  • Daniele Pinchera,
  • Mario Lucido,
  • Fulvio Schettino and
  • Gaetano Panariello

We propose a method for estimating the channel matrix in MIMO communication systems from intermittent measurements based on the matrix completion technique. The method requires the minimization of the trace norm of the partially known channel matrix....

  • Article
  • Open Access
35 Citations
9,784 Views
18 Pages

Estimating Angle-of-Arrival and Time-of-Flight for Multipath Components Using WiFi Channel State Information

  • Afaz Uddin Ahmed,
  • Reza Arablouei,
  • Frank De Hoog,
  • Branislav Kusy,
  • Raja Jurdak and
  • Neil Bergmann

29 May 2018

Channel state information (CSI) collected during WiFi packet transmissions can be used for localization of commodity WiFi devices in indoor environments with multipath propagation. To this end, the angle of arrival (AoA) and time of flight (ToF) for...

  • Article
  • Open Access
1 Citations
672 Views
26 Pages

This paper investigates the problem of robust fusion state estimation for multi-sensor systems under the influence of time-correlated fading channels, incorporating a dynamic event-triggered mechanism (DETM). The randomly occurring parameter uncertai...

  • Article
  • Open Access
894 Views
21 Pages

Multi-Task Learning for Joint Indoor Localization and Blind Channel Estimation in OFDM Systems

  • Maria Camila Molina,
  • Iness Ahriz,
  • Lounis Zerioul and
  • Michel Terré

30 June 2025

In contemporary wireless communication systems, achieving precise localization of communicating devices and accurate channel estimation is crucial for enhancing operational efficiency and reliability. This study introduces a novel approach that integ...

  • Article
  • Open Access
4 Citations
2,895 Views
39 Pages

27 March 2025

This study addresses the challenges of real-time channel state estimation and adaptive parameter adjustment in dynamic LoRa networks, where the existing methods often fail to adapt efficiently to highly variable channel conditions. This study present...

  • Article
  • Open Access
799 Views
17 Pages

Task-Based Quantizer for CSI Feedback in Multi-User MISO VLC/RF Systems

  • Fugui He,
  • Congcong Wang,
  • Yao Nie,
  • Xianglin Fan,
  • Chensitian Zhang and
  • Yang Yang

The performance of multiple-input single-output (MISO) transmission is highly dependent on the accuracy of the channel state information (CSI) at the base station (BS), which necessitates precise CSI estimation and reliable feedback from the user equ...

  • Article
  • Open Access
3,903 Views
14 Pages

CSI-Channel Spatial Decomposition for WiFi-Based Human Pose Estimation

  • Jie Deng,
  • Kaiqi Chen,
  • Pengsen Jing,
  • Guannan Dong,
  • Min Yang,
  • Aichun Zhu and
  • Yifeng Li

15 February 2025

WiFi-based human pose estimation has garnered significant interest in deep learning research. However, due to the varying angles of signal transceivers and the differing sensitivities of signal subcarriers to movement, inaccuracies can arise in WiFi-...

  • Review
  • Open Access
11 Citations
7,116 Views
27 Pages

A Survey on Optimal Channel Estimation Methods for RIS-Aided Communication Systems

  • Stamatia F. Drampalou,
  • Nikolaos I. Miridakis,
  • Helen C. Leligou and
  • Panagiotis A. Karkazis

9 March 2023

Next-generation wireless communications aim to utilize mmWave/subTHz bands. In this regime, signal propagation is vulnerable to interferences and path losses. To overcome this issue, a novel technology has been introduced, which is called reconfigura...

  • Article
  • Open Access
5 Citations
2,602 Views
19 Pages

18 July 2022

With the increasing demand for wireless location services, it is of great interest to reduce the deployment cost of positioning systems. For this reason, indoor positioning based on WiFi has attracted great attention. Compared with the received signa...

  • Article
  • Open Access
11 Citations
4,212 Views
14 Pages

Indoor Intruder Tracking Using Visible Light Communications

  • Farah M. Alsalami,
  • Zahir Ahmad,
  • Stanislav Zvanovec,
  • Paul Anthony Haigh,
  • Olivier C. L. Haas and
  • Sujan Rajbhandari

21 October 2019

This paper proposes a comprehensive study of indoor intruder tracking using visible light communication (VLC). A realistic indoor VLC channel was developed, taking into consideration reflections, shadowing, and ambient noise. The intruder was conside...

  • Article
  • Open Access
2 Citations
2,237 Views
18 Pages

30 December 2021

An angle estimation algorithm for tracking indoor moving targets with WiFi is proposed. First, phase calibration and static path elimination are proposed and performed on the collected channel state information signals from different antennas. Then,...

  • Article
  • Open Access
4 Citations
3,765 Views
19 Pages

Wits: An Efficient Wi-Fi Based Indoor Positioning and Tracking System

  • Li-Ping Tian,
  • Liang-Qin Chen,
  • Zhi-Meng Xu and
  • Zhizhang (David) Chen

22 December 2021

With the development of wireless communication technology, indoor tracking technology has been rapidly developed. Wits presents a new indoor positioning and tracking algorithm with channel state information of Wi-Fi signals. Wits tracks using motion...

  • Article
  • Open Access
2,469 Views
25 Pages

Channel State Estimation in LTE-Based Heterogenous Networks Using Deep Learning

  • Krzysztof K. Cwalina,
  • Piotr Rajchowski,
  • Alicja Olejniczak,
  • Olga Błaszkiewicz and
  • Robert Burczyk

19 November 2021

Following the continuous development of the information technology, the concept of dense urban networks has evolved as well. The powerful tools, like machine learning, break new ground in smart network and interface design. In this paper the concept...

  • Article
  • Open Access
9 Citations
5,458 Views
19 Pages

Deep Learning Peephole LSTM Neural Network-Based Channel State Estimators for OFDM 5G and Beyond Networks

  • Mohamed Hassan Essai Ali,
  • Ali R. Abdellah,
  • Hany A. Atallah,
  • Gehad Safwat Ahmed,
  • Ammar Muthanna and
  • Andrey Koucheryavy

2 August 2023

This study uses deep learning (DL) techniques for pilot-based channel estimation in orthogonal frequency division multiplexing (OFDM). Conventional channel estimators in pilot-symbol-aided OFDM systems suffer from performance degradation, especially...

  • Feature Paper
  • Article
  • Open Access
4,269 Views
18 Pages

Device-Free Indoor Location Estimation System Using Commodity Wireless LANs

  • Yuan Zhou,
  • Minseok Kim,
  • Hideaki Momose and
  • Satoru Yasukawa

21 April 2021

In recent years, propagation channel characteristics have been effectively used in several applications such as motion sensing and position detection. Considerable attention has been paid to channel-sounding methods that are easy to utilize using low...

  • Article
  • Open Access
5 Citations
3,438 Views
23 Pages

SWiLoc: Fusing Smartphone Sensors and WiFi CSI for Accurate Indoor Localization

  • Khairul Mottakin,
  • Kiran Davuluri,
  • Mark Allison and
  • Zheng Song

30 September 2024

Dead reckoning is a promising yet often overlooked smartphone-based indoor localization technology that relies on phone-mounted sensors for counting steps and estimating walking directions, without the need for extensive sensor or landmark deployment...

  • Feature Paper
  • Review
  • Open Access
19 Citations
5,367 Views
21 Pages

The aim of this review paper is to discuss some of the advanced sampling techniques proposed in the last decade in the framework of planar near-field measurements, clarifying the theoretical basis of the different techniques, and showing the advantag...

  • Article
  • Open Access
667 Views
16 Pages

Due to the rise of gigascale antenna arrays considered to implement long-range wireless power transfer (WPT), there is a need for a scalable high-efficiency adaptive dynamic beam focusing method. Several methods have been proposed, including methods...

  • Article
  • Open Access
179 Views
17 Pages

1 December 2025

This paper investigates the problems of remote state estimation and instruction adjustment for multi-agent systems (MASs) under simultaneous sensor and instruction attacks, as well as external disturbances. Unlike existing research that primarily foc...

  • Article
  • Open Access
4 Citations
3,781 Views
27 Pages

1 September 2022

Quantum Fisher Information is considered in Quantum Information literature as the main resource to determine a bound in the parametric characterization problem of a quantum channel by means of probe states. The parameters characterizing a quantum cha...

  • Article
  • Open Access
3 Citations
2,088 Views
24 Pages

16 May 2023

Parameter estimation for devices containing or supporting quantum systems is a field of quantum metrology using quantum probe states to reach their characterization. Pauli channels are ideal structures where qubits are transmitted or contained, commo...

  • Feature Paper
  • Article
  • Open Access
1 Citations
1,406 Views
25 Pages

Joint Identification and Sensing for Discrete Memoryless Channels

  • Wafa Labidi,
  • Yaning Zhao,
  • Christian Deppe and
  • Holger Boche

27 December 2024

In the identification (ID) scheme proposed by Ahlswede and Dueck, the receiver’s goal is simply to verify whether a specific message of interest was sent. Unlike Shannon’s transmission codes, which aim for message decoding, ID codes for a...

  • Article
  • Open Access
2,868 Views
19 Pages

21 October 2020

With the rapid development of wireless sensor networks (WSNs) technology, a growing number of applications and services need to acquire the states of channels or sensors, especially in order to use these states for monitoring, object tracking, motion...

  • Article
  • Open Access
2 Citations
3,766 Views
16 Pages

18 February 2022

Channel estimation is a challenging task in a millimeter-wave (mm Wave) massive multiple-input multiple-output (MIMO) system. The existing deep learning scheme, which learns the mapping from the input to the target channel, has great difficulty in es...

  • Article
  • Open Access
2 Citations
2,565 Views
16 Pages

18 June 2023

This paper proposes a reinforcement learning-aided channel estimator for time-varying multi-input multi-output systems. The basic concept of the proposed channel estimator is the selection of the detected data symbol in the data-aided channel estimat...

  • Article
  • Open Access
17 Citations
4,677 Views
22 Pages

24 November 2022

With the development of the underwater acoustic (UWA) adaptive communication system, energy-efficient transmission has become a critical topic in underwater acoustic (UWA) communications. Due to the unique characteristics of the underwater environmen...

  • Article
  • Open Access
2 Citations
1,569 Views
16 Pages

28 January 2024

In recent years, the problem of cyber–physical systems’ remote state estimations under eavesdropping attacks have been a source of concern. Aiming at the existence of eavesdroppers in multi-system CPSs, the optimal attack energy allocatio...

  • Article
  • Open Access
1,889 Views
29 Pages

5 January 2024

Quantum Parameter Estimation (QPE) is commonly led using quantum probe states for the characterization of quantum systems. For these purposes, Quantum Fisher Information (QFI) plays a crucial role by imposing a lower bound for the parametric estimati...

  • Article
  • Open Access
7 Citations
2,230 Views
14 Pages

An Improved SAMP Algorithm for Sparse Channel Estimation in OFDM System

  • Hao Hu,
  • Xu Zhao,
  • Shiyong Chen and
  • Tiancong Huang

25 July 2023

Channel estimation of an orthogonal frequency division multiplexing (OFDM) system based on compressed sensing can effectively reduce the pilot overhead and improve the utilization rate of spectrum resources. The traditional SAMP algorithm with a fixe...

  • Article
  • Open Access
6 Citations
4,590 Views
16 Pages

27 July 2017

A joint-optimization method is proposed for enhancing the behavior of the l 1 -norm- and sum-log norm-penalized NLMS algorithms to meet the requirements of sparse adaptive channel estimations. The improved channel estimation algorithms are rea...

  • Article
  • Open Access
6 Citations
2,811 Views
22 Pages

Compressive Sensing-Based Channel Estimation for Uplink and Downlink Reconfigurable Intelligent Surface-Aided Millimeter Wave Massive MIMO Systems

  • Olutayo Oyeyemi Oyerinde,
  • Adam Flizikowski,
  • Tomasz Marciniak,
  • Dmitry Zelenchuk and
  • Telex Magloire Nkouatchah Ngatched

This paper investigates single-user uplink and two-user downlink channel estimation in reconfigurable intelligent surface (RIS)-aided millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) wireless communication systems. Because of th...

  • Article
  • Open Access
418 Views
12 Pages

6 November 2025

To achieve optimal passive beamforming gains from Intelligent Reflective Surfaces (IRS), accurate Channel State Information (CSI) acquisition is required. However, the IRS, with numerous passive devices, lacks the ability to process signals, resultin...

  • Article
  • Open Access
9 Citations
3,704 Views
18 Pages

For multi-user millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems, the precise acquisition of channel state information (CSI) is a huge challenge. With the increase of the number of antennas at the base station (BS), the t...

  • Article
  • Open Access
1,038 Views
15 Pages

A Novel Autoencoder-Based Design for Channel Estimation in Maritime OFDM Systems

  • Yongjie Yang,
  • Wenming Chao,
  • Li Ma,
  • Fandi Meng and
  • Zhixuan Hu

29 August 2025

This paper introduces a novel autoencoder-based channel estimation framework specifically designed for OFDM systems in the complex and rapidly time-varying maritime channel. We design a novel autoencoder architecture that integrates attention mechani...

  • Review
  • Open Access
14 Citations
9,076 Views
30 Pages

23 July 2023

With the dramatic increase in the number of mobile users and wireless devices accessing the network, the performance of fifth generation (5G) wireless communication systems has been severely challenged. Reconfigurable intelligent surface (RIS) has re...

  • Feature Paper
  • Article
  • Open Access
6 Citations
3,246 Views
40 Pages

Multiparameter Estimation with Two-Qubit Probes in Noisy Channels

  • Lorcán O. Conlon,
  • Ping Koy Lam and
  • Syed M. Assad

26 July 2023

This work compares the performance of single- and two-qubit probes for estimating several phase rotations simultaneously under the action of different noisy channels. We compute the quantum limits for this simultaneous estimation using collective and...

  • Article
  • Open Access
25 Citations
5,281 Views
13 Pages

NLOS Identification in WLANs Using Deep LSTM with CNN Features

  • Viet-Hung Nguyen,
  • Minh-Tuan Nguyen,
  • Jeongsik Choi and
  • Yong-Hwa Kim

20 November 2018

Identifying channel states as line-of-sight or non-line-of-sight helps to optimize location-based services in wireless communications. The received signal strength identification and channel state information are used to estimate channel conditions f...

  • Article
  • Open Access
10 Citations
3,389 Views
21 Pages

18 July 2021

Orthogonal frequency division multiplexing (OFDM) has been widely adopted in underwater acoustic (UWA) communication due to its good anti-multipath performance and high spectral efficiency. For UWA-OFDM systems, channel state information (CSI) is ess...

  • Article
  • Open Access
7 Citations
4,205 Views
18 Pages

This paper deals with the problem of the channel estimation of orthogonal frequency division multiplexing (OFDM) signals transmitted through a time-varying fading channel. We show that an accurate power delay profile (PDP) estimator can be obtained b...

  • Communication
  • Open Access
4 Citations
3,353 Views
11 Pages

12 July 2021

The compressive sensing (CS)-based sparse channel estimator is recognized as the most effective solution to the excessive pilot overhead in massive MIMO systems. However, due to the complex signal processing in the wireless communication systems, the...

  • Article
  • Open Access
38 Citations
4,816 Views
18 Pages

22 August 2017

A group-constrained maximum correntropy criterion (GC-MCC) algorithm is proposed on the basis of the compressive sensing (CS) concept and zero attracting (ZA) techniques and its estimating behavior is verified over sparse multi-path channels. The pro...

  • Article
  • Open Access
11 Citations
4,806 Views
18 Pages

In high-speed railways, the wireless channel and network topology change rapidly due to the high-speed movement of trains and the constant change of the location of communication equipment. The topology is affected by channel noise, making accurate c...

  • Article
  • Open Access
8 Citations
4,770 Views
21 Pages

Elucidating the Structural Basis of the Intracellular pH Sensing Mechanism of TASK-2 K2P Channels

  • Daniel Bustos,
  • Mauricio Bedoya,
  • David Ramírez,
  • Guierdy Concha,
  • Leandro Zúñiga,
  • Niels Decher,
  • Erix W. Hernández-Rodríguez,
  • Francisco V. Sepúlveda,
  • Leandro Martínez and
  • Wendy González

Two-pore domain potassium (K2P) channels maintain the cell’s background conductance by stabilizing the resting membrane potential. They assemble as dimers possessing four transmembrane helices in each subunit. K2P channels were crystallized in “up” a...

  • Article
  • Open Access
41 Citations
4,523 Views
20 Pages

Discrete Fourier Transform with Denoise Model Based Least Square Wiener Channel Estimator for Channel Estimation in MIMO-OFDM

  • Dhanasekaran S,
  • SatheeshKumar Palanisamy,
  • Fahima Hajjej,
  • Osamah Ibrahim Khalaf,
  • Ghaida Muttashar Abdulsahib and
  • Ramalingam S

3 November 2022

Multiple-input Multiple-Output (MIMO) systems require orthogonal frequency division multiplexing to operate efficiently in multipath communication (OFDM). Channel estimation (C.E.) is used in channel conditions where time-varying features are require...

  • Article
  • Open Access
803 Views
20 Pages

4 September 2025

The confined space of coal mines characterized by curved tunnels with rough surfaces and a variety of deployed production equipment induces severe signal attenuation and interruption, which significantly degrades the accuracy of conventional channel...

  • Article
  • Open Access
4 Citations
1,870 Views
17 Pages

24 October 2023

This paper proposes a time- and event-triggered hybrid scheduling for remote state estimation with limited communication resources. A smart sensor observes a physical process and decides whether to send the local state estimate to a remote estimator...

  • Article
  • Open Access
6 Citations
3,098 Views
14 Pages

25 October 2019

Spectrum sensing is the necessary premise for implementing cognitive radio technology. The conventional wideband spectrum sensing methods mainly work with sweeping frequency and still face major challenges in performance and efficiency. This paper in...

  • Article
  • Open Access
940 Views
22 Pages

The use of low-resolution analog-to-digital converters (ADCs) in receivers has emerged as an effective solution for reducing power consumption in millimeter-wave (mmWave) massive multiple-input–multiple-output (MIMO) systems. However, low-resol...

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