{rfName}
Ma

Indexed in

License and Use

Icono OpenAccess

Altmetrics

Analysis of institutional authors

Penarrocha, Vicent Miquel RodrigoAuthorRubio, LorenzoAuthorReig, JuanAuthor

Share

February 18, 2026
Publications
>
Article

Machine Learning-Based Method for LOS/NLOS Identification in V2V Environment

Publicated to: IEEE Access. 14 4189-4207 - 2026-01-01 14(), DOI: 10.1109/ACCESS.2026.3650940

Authors:

Chakkour, Yousra; Penarrocha, Vicent Miquel Rodrigo; Rubio, Lorenzo; Fernandez, Herman; Reig, Juan
[+]

Affiliations

Univ Pedag & Tecnol Colombia, Escuela Ingn Elect, Sogamoso 15221, Colombia - Author
Univ Politecn Valencia, iTEAM Res Inst, Antennas & Propagat Lab, Valencia 46022, Spain - Author

Abstract

Accurate identification of line-of-sight (LOS) and non-line-of-sight (NLOS) conditions is a critical challenge in wireless communication, particularly the vehicle-to-vehicle (V2V) channels, owing to the high dynamics inherent to V2V environments. This study explores the use of machine learning (ML) techniques for LOS/NLOS classification based on wireless channel features extracted from both the measured received power level and the difference between the measured attenuation and free space loss (FSL). Feature correlation, importance analysis, and cumulative scoring are applied to derive a compact and informative feature set. A performance analysis with varying numbers of input features, along with an ablation study, showed that reliable classification can be maintained even with a reduced feature set. In addition, per-class evaluation is performed to capture distinct LOS and NLOS behaviors, which is particularly relevant when prioritizing specific outcomes such as minimizing false LOS or false NLOS detection. Balanced datasets were created through random sampling from the LOS and NLOS classes, with training and testing performed using K-fold cross-validation (CV). Three models, random forest (RF), support vector machines (SVM), and LogitBoost, were evaluated based on recall, specificity, precision, and the F1-score metric. The results indicate that the RF model outperforms the others and that a minimal yet balanced training dataset from both the LOS and NLOS classes is sufficient to achieve high classification reliability. The proposed method offers interpretability, a low computational load framework, and flexibility to address specific classification needs. This aspect provides valuable insights into improving the performance of vehicular communication systems.
[+]

Keywords

AccuracyArtificial intelligenceChannel modelingCross-validationData modelsFeature extractionLos/nlos classificationLoss measurementMachine learningPer-class analysisPower measurementRadio frequencyReal-time systemsSupervised learningSupport vector machinesTrainingTraining dataset sizeV2v channelsVehicular communicationsWireless communication

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal IEEE Access due to its progression and the good impact it has achieved in recent years, according to the agency Scopus (SJR), it has become a reference in its field. In the year of publication of the work, 2026, it was in position , thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering (Miscellaneous).

[+]

Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-08:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 2 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
[+]

Leadership analysis of institutional authors

This work has been carried out with international collaboration, specifically with researchers from: Colombia.

There is a significant leadership presence as some of the institution’s authors appear as the first or last signer, detailed as follows: First Author (Chakkour, Yousra) and Last Author (Reig Pascual, Juan Ribera).

the author responsible for correspondence tasks has been Chakkour, Yousra.

[+]

Awards linked to the item

This work was supported in part by the Vicerrectorado de Investigacion de la Universitat Politecnica de Valencia under Grant PAID-11-24, and in part by MCIN/AEI/10.13039/501100011033 through the I+D+i Projects under Grant PID2024-158965OB-C21.
[+]