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Spectrum Sensing for Wireless Communication Systems

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Communications".

Deadline for manuscript submissions: closed (31 August 2023) | Viewed by 7095

Special Issue Editors


E-Mail Website
Guest Editor
Department of Engineering, University of Messina, Messina, Italy
Interests: signal processing; speech coding and recognition; biomedical signal processing; biometric identification; signal processing for telecommunications; wireless mesh network; voice transmission over IP; wireless sensor nodes
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Department of Engineering, University of Messina, Messina, Italy
Interests: reliability and availability analysis of distributed systems; wireless sensor networks; algorithms for management of opportunistic access in cognitive radio systems; algorithms for solution of non Markovian stochastic Petri net; phase type distributions; software performance evaluation techniques especially applied to distributed systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nowadays, billions of devices proliferate in the Internet of Things (IoT) ecosystem in an all-embracing perspective, including several sub-applications: smart cities, Industry 4.0, e-government, etc.

Most IoT devices operate in wireless mode and need to coexist with high-level mobile devices such as smartphones and tablets; therefore, they have to share the available telecommunication bandwidth to ensure their connectivity.

IoT-designed devices mainly operate in unlicensed and limited industrial, scientific, and medical (ISM) bands. With the proliferation of IoT devices, the ISM band is congested, and there is a need to explore the use of other bands.

In order to overcome this issue, software-defined radio (SDR) and cognitive radio (CR) technologies are considered important innovations in wireless communications and play an important role in 5G networks. In a CR scenario, communication transceivers can be divided into two categories: primary users (PUs) have the priority to use the spectrum band, while secondary users (SUs) are opportunistic users that can transmit on that band whenever it is left vacant by primary users.

Spectrum sensing (SS) allows SU devices to detect the presence or absence of a PU signal in the frequency band, and is classified under the more general problem of pattern recognition.

Recently, several approaches based on artificial intelligence (AI) and machine learning (ML) have been proposed in order to perform pattern recognition, which can also be performed by means of consolidated or innovative techniques based on classical statistical approaches.

This Special Issue aims to highlight advances in the development and comparisons of spectrum sensing techniques, specifically pointing out any support of IA and ML to solve this issue and its advantages/drawbacks compared to classical statistical approaches.

Potential topics include but are not limited to:

  • Machine learning, deep learning or (deep) reinforcement learning algorithms for spectrum sensing;
  • Statistical approaches to spectrum sensing;
  • Artificial intelligence applied to spectrum sensing;
  • Feature selection for spectrum sensing;
  • Random sampling applied to spectrum sensing;
  • Distributed algorithms applied to spectrum sensing;
  • Federated learning and federated reinforcement learning for spectrum sensing;
  • Performance analysis of spectrum sensing algorithms.

Dr. Salvatore Serrano
Dr. Scarpa Marco
Guest Editors

Manuscript Submission Information

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Keywords

  • spectrum sensing
  • cognitive radio
  • software-defined radio
  • statistical classification
  • artificial intelligence
  • machine learning
  • feature selection
  • reinforcement learning

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Published Papers (2 papers)

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Research

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14 pages, 3146 KiB  
Article
Spectrum Sensing Method Based on Residual Dense Network and Attention
by Anyi Wang, Qifeng Meng and Mingbo Wang
Sensors 2023, 23(18), 7791; https://doi.org/10.3390/s23187791 - 11 Sep 2023
Cited by 3 | Viewed by 1074
Abstract
To address the problems of gradient vanishing and limited feature extraction capability of traditional CNN spectrum sensing methods in deep network structures and to effectively avoid network degradation issues under deep network structures, this paper proposes a collaborative spectrum sensing method based on [...] Read more.
To address the problems of gradient vanishing and limited feature extraction capability of traditional CNN spectrum sensing methods in deep network structures and to effectively avoid network degradation issues under deep network structures, this paper proposes a collaborative spectrum sensing method based on Residual Dense Network and attention mechanisms. This method involves stacking and normalizing the time-domain information of the signal, constructing a two-dimensional matrix, and mapping it to a grayscale image. The grayscale images are divided into training and testing sets, and the training set is used to train the neural network to extract deep features. Finally, the test set is fed into the well-trained neural network for spectrum sensing. Experimental results show that, under low signal-to-noise ratios, the proposed method demonstrates superior spectral sensing performance compared to traditional collaborative spectrum sensing methods. Full article
(This article belongs to the Special Issue Spectrum Sensing for Wireless Communication Systems)
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Review

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19 pages, 6979 KiB  
Review
Spectrum Sensing, Clustering Algorithms, and Energy-Harvesting Technology for Cognitive-Radio-Based Internet-of-Things Networks
by Xavier Fernando and George Lăzăroiu
Sensors 2023, 23(18), 7792; https://doi.org/10.3390/s23187792 - 11 Sep 2023
Cited by 52 | Viewed by 5542
Abstract
The aim of this systematic review was to identify the correlations between spectrum sensing, clustering algorithms, and energy-harvesting technology for cognitive-radio-based internet of things (IoT) networks in terms of deep-learning-based, nonorthogonal, multiple-access techniques. The search results and screening procedures were configured with the [...] Read more.
The aim of this systematic review was to identify the correlations between spectrum sensing, clustering algorithms, and energy-harvesting technology for cognitive-radio-based internet of things (IoT) networks in terms of deep-learning-based, nonorthogonal, multiple-access techniques. The search results and screening procedures were configured with the use of a web-based Shiny app in the Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) flow design. AMSTAR, DistillerSR, Eppi-Reviewer, PICO Portal, Rayyan, and ROBIS were the review software systems harnessed for screening and quality assessment, while bibliometric mapping (dimensions) and layout algorithms (VOSviewer) configured data visualization and analysis. Cognitive radio is pivotal in the utilization of an adequate radio spectrum source, with spectrum sensing optimizing cognitive radio network operations, opportunistic spectrum access and sensing able to boost the efficiency of cognitive radio networks, and cooperative spectrum sharing together with simultaneous wireless information and power transfer able increase spectrum and energy efficiency in 6G wireless communication networks and across IoT devices for efficient data exchange. Full article
(This article belongs to the Special Issue Spectrum Sensing for Wireless Communication Systems)
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