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Signals, Volume 7, Issue 1

2026 February - 18 articles

Cover Story: The accurate detection of sleep stages and disorders in older adults is essential for the effective diagnosis and treatment of sleep disorders affecting millions worldwide. Although Polysomnography (PSG) remains the primary method for monitoring sleep in medical settings, it is costly and time-consuming. Recent automated models have not fully explored and effectively fused the sleep features that are essential to identify sleep stages and disorders. This study proposes a novel automated model for the detection of sleep stages and disorders in older adults by analyzing PSG recordings. PSG data include multiple channels, and the use of our proposed advanced methods reveals the potential correlations and complementary features across EEG, EOG, and EMG signals. View this paper
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Articles (18)

  • Article
  • Open Access
3 Citations
1,774 Views
17 Pages

19 February 2026

Background: Electrocardiography (ECG), particularly the 12-lead configuration, is a crucial method for identifying heart rhythm abnormalities. However, its effectiveness can be reduced by noise contamination. State-of-the-art denoising methods based...

(This article belongs to the Special Issue Advanced Methods of Biomedical Signal Processing II)
  • Review
  • Open Access
7 Citations
7,532 Views
48 Pages

16 February 2026

Electroencephalography (EEG) has transitioned from a subjective observational method into a data-intensive analytical field that utilises sophisticated algorithms and mathematical models. This review provides a holistic foundation by detailing the ne...

  • Article
  • Open Access
1 Citations
2,111 Views
20 Pages

5 February 2026

Automatic emotion recognition based on EEG has been a key research frontier in recent years, involving the direct extraction of emotional states from brain dynamics. However, existing deep learning approaches often treat EEG either as a sequence or a...

  • Article
  • Open Access
1 Citations
1,065 Views
27 Pages

2 February 2026

Despite successful revascularization, patients with non-ST elevation myocardial infarction (NSTEMI) remain at higher risk of mortality and morbidity. Accurately predicting mortality risk in this cohort can improve outcomes through timely intervention...

  • Review
  • Open Access
2 Citations
1,934 Views
28 Pages

2 February 2026

Foreground segmentation and background subtraction are critical components in many computer vision applications, such as intelligent video surveillance, urban security systems, and obstacle detection for autonomous vehicles. Although extensively stud...

  • Article
  • Open Access
2 Citations
2,386 Views
20 Pages

2 February 2026

Feature extraction and description are fundamental components of visual perception systems used in applications such as visual odometry, Simultaneous Localization and Mapping (SLAM), and autonomous navigation. In resource-constrained platforms, such...

(This article belongs to the Topic Image Processing, Signal Processing and Their Applications)
  • Article
  • Open Access
2,484 Views
19 Pages

2 February 2026

Multitrack music transcription is the task of converting music recordings into symbolic music representations that are assigned to individual instruments. This task requires simultaneous transcription of note onset and offset events for individual in...

  • Article
  • Open Access
1,415 Views
39 Pages

An Experimental Tabletop Platform for Bidirectional Molecular Communication Using Advection–Diffusion Dynamics in Bio-Inspired Nanonetworks

  • Nefeli Chatzisavvidou,
  • Stefanos Papasotiriou,
  • Ioanna Vrachni,
  • Konstantinos Kantelis,
  • Petros Nicopolitidis and
  • Georgios Papadimitriou

2 February 2026

With rapid advances in nanotechnology and synthetic biology, biological nanonetworks are emerging for biomedical and environmental applications within the Internet of Bio-NanoThings. While they rely on molecular communication, experimental validation...

  • Article
  • Open Access
2 Citations
675 Views
16 Pages

2 February 2026

Bearing fault diagnosis is critical in rotating machinery, and collecting and analyzing vibration signals from faulty bearings is a widely employed method in fault diagnosis. To efficiently extract the information of periodic pulse from complex signa...

(This article belongs to the Special Issue Condition Monitoring and Intelligent Fault Diagnosis of Rotor System)
  • Article
  • Open Access
1 Citations
710 Views
31 Pages

21 January 2026

This paper focuses on the design of robust fusion estimators for multi-sensor systems experiencing constrained communications, model uncertainties, and random packet dropouts. To mitigate the impact of modeling errors, a sensitivity-penalized robust...

  • Review
  • Open Access
1 Citations
1,488 Views
34 Pages

Firebug Swarm Optimization Algorithm: An Overview and Applications

  • Faroq Awin,
  • Yasser Alginahi and
  • Esam Abdel-Raheem

13 January 2026

This survey delves into the Firebug Swarm Optimization (FSO) algorithm, an advanced global optimization algorithm that plays a pivotal role in modern swarm intelligence optimization techniques. It explores the core principles of the FSO algorithm and...

  • Article
  • Open Access
4 Citations
2,848 Views
26 Pages

12 January 2026

Self-supervised learning (SSL) models have achieved remarkable success in speaker verification tasks, yet their robustness to real-world audio degradation remains insufficiently characterized. This study presents a comprehensive analysis of how audio...

(This article belongs to the Special Issue Advanced Signal Processing Technologies: Integrating AI, Future Communications, and Innovative Applications)
  • Article
  • Open Access
1,212 Views
12 Pages

12 January 2026

To obtain radar images of a group of small space objects or to resolve individual elements of complex space objects in near-Earth orbit, a radar system must have high spatial resolution. High range resolution is achieved by using complex probing sign...

  • Article
  • Open Access
2 Citations
2,069 Views
15 Pages

9 January 2026

Leg dominance has been linked to an increased risk of lower-limb injuries in sports. This study examined bilateral asymmetry in muscle synergy patterns during one-leg stance on stable and multiaxial unstable surfaces. Twenty-five active young adults...

  • Article
  • Open Access
2 Citations
2,742 Views
22 Pages

8 January 2026

Background and Objective: The accurate detection of sleep stages and disorders in older adults is essential for the effective diagnosis and treatment of sleep disorders affecting millions worldwide. Although Polysomnography (PSG) remains the primary...

(This article belongs to the Special Issue Advanced Methods of Biomedical Signal Processing II)
  • Article
  • Open Access
1,267 Views
16 Pages

A Novel Deterministic Algorithm for Atrial Fibrillation Detection

  • Alessandro Filisetti,
  • Pietro Bia,
  • Germana Luciani,
  • Margherita Losardo,
  • Riccardo Ardoino and
  • Antonio Manna

8 January 2026

The absence of a recognizable P wave in an electrocardiogram (ECG) is a critical indicator for the diagnosis of atrial fibrillation (AF). An algorithm capable of distinguishing between physiological and pathological states in a short period of time c...

(This article belongs to the Special Issue Advanced Methods of Biomedical Signal Processing II)
  • Article
  • Open Access
1,426 Views
17 Pages

7 January 2026

Scene depth information is a key component of any robotic mobile application. Range sensors, such as LiDAR, sonar, or radar, capture depth data of a scene. However, the data captured by these sensors frequently presents missing regions or information...

(This article belongs to the Special Issue Recent Development of Signal Detection and Processing)
  • Article
  • Open Access
2 Citations
2,580 Views
32 Pages

Evaluation of Jamming Attacks on NR-V2X Systems: Simulation and Experimental Perspectives

  • Antonio Santos da Silva,
  • Kevin Herman Muraro Gularte,
  • Giovanni Almeida Santos,
  • Davi Salomão Soares Corrêa,
  • Luís Felipe Oliveira de Melo,
  • João Paulo Javidi da Costa,
  • José Alfredo Ruiz Vargas,
  • Daniel Alves da Silva and
  • Tai Fei

19 December 2025

Autonomous vehicles (AVs) are transforming transportation by improving safety, efficiency, and intelligence through integrated sensing, computing, and communication technologies. However, their growing reliance on Vehicle-to-Everything (V2X) communic...

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Signals - ISSN 2624-6120