A.M. Cailean

Stefan cel Mare University of Suceava | USV · Faculty of Electrical Engineering and Computer Sciences

Wireless communication represents the basis for the next generation of vehicle safety systems, whereas visible light communication (VLC) is one of the most suitable technologies for this purpose. In this context, this work introduces a novel VLC receiver architecture that integrates a field-of-view (FoV) adaptation mechanism in accordance with the...

This chapter follows challenges, policies, and research directions shaping the digital transformation of the transport sector towards smart and sustainable mobility. Urban mobility, facing growing number of vehicles, increasing urbanization, and environmental concerns, actively seeks solutions through information and communication technologies. In-...

Severe visual impairment and blindness significantly affect a person’s quality of life, leading sometimes to social anxiety. Nevertheless, instead of concentrating on a person’s inability, we could focus on their capacities and on their other senses, which in many cases are more developed. On the other hand, the technical evolution that we are witn...

Visible light communications (VLC) are an emerging technology that is increasingly demonstrating its ability to provide wireless communications in areas where radio frequency (RF) technology might have some limitations. Therefore, VLC systems offer possible answers to various applications in outdoor conditions, such as in the road traffic safety do...

Visible Light Communications (VLC) are developing as an omnipresent solution for inter-vehicle communications. Based on intensive research efforts, the performance of vehicular VLC systems has significantly improved in terms of noise resilience, communication range, and latencies. Nevertheless, in order to be ready for deployment in real applicatio...

Due to its unique advantages, the integration of Visible Light Communications (VLC) in vehicle safety applications has become a major research topic. Nevertheless, as this is an emergent technology, several challenges must be addressed. One of the most important of these challenges is oriented toward increasing vehicular VLC systems' communication...

Vehicular visible light communications (VLC) are considered a suitable technology for vehicular platooning applications. Nevertheless, this domain imposes strict performance requirements. Although numerous works have shown that VLC technology is compatible with platooning applications, existing studies are mainly focused on the physical layer perfo...

In the context in which pedestrians are the most exposed road user category in urban areas, this paper presents the results of an experimental demonstration of a new system designed to assist pedestrians in safely using a crosswalk. The proposed architecture consists of a pedestrian detection and localization unit that detects pedestrians in the cr...

Visible light communications emerges as a promising wireless communication technology that has been found suitable for numerous indoor and outdoor applications. In this article, a new in-vehicle VLC system is designed, implemented, and experimentally evaluated. The purpose of this new system is to provide car passengers with optical wireless commun...

In urban areas, pedestrians are the road users category that is the most exposed to road accident fatalities. In this context, the present article proposes a totally new architecture, which aims to increase the safety of pedestrians on the crosswalk. The first component of the design is a pedestrian detection system, which identifies the user’s pre...

The use of Visible Light Communications (VLC) in vehicular applications has become a major research area due to its simplicity, high performance to cost ratio, and great deployment potential. In this context, this article provides one of the very few analyses and experimental evaluations concerning the integration of a light dimming function in veh...

The use of visible light communications technology in communication-based vehicle applications is gaining more and more interest as the research community is constantly overcoming challenge after challenge. In this context, this article addresses the issues associated with the use of Visible Light Communications (VLC) technology in Vehicle-to-Vehic...

Visible light communications are considered as a promising solution for inter-vehicle communications, which in turn can significantly enhance the traffic safety and efficiency. However, the vehicular visible light communications (VLC) channel is highly dynamic, very unpredictable, and subject to many noise sources. Enhancing VLC systems with self-a...

As the interest toward communication-based vehicle safety applications is increasing, the development of secure wireless communication techniques has become an important research area. In this context, the article addresses issues that are related to the use of the visible light communication (VLC) technology in vehicular applications. Thus, it pro...

The usage of Visible Light Communications (VLC) technology in automotive applications is very promising. Nevertheless, in outdoor conditions, the performances of existing VLC systems are strongly affected by the sun or other sources of light. In such situations, the strong parasitic light can saturate the photosensitive element and block data commu...

The area of wireless communications is facing major transformations as the mobile communication is transitioning to the fifth-generation technology while local area networks to the sixth-generation of Wi-Fi. In this paper, the status and complementarity of radiofrequency and light communications systems are discussed in the context of indoor and ve...

Optical Wireless Communications are emerging as promising alternative to radiofrequency and microwave communications in order to respond to the increasing demand for data transfer and to the expanding area of wireless applications. In this context, this paper provides a short overview of OWC technologies and focuses on their usage in automotive app...

Wireless communications technologies have the potential to significantly improve the safety and the efficiency of the transportation system. Nevertheless, supporting the requirements imposed by the usage in vehicle safety applications is rather challenging. In such a context, this paper provides an overview of some of the most promising technologie...

Due to numerous advantages, Visible Light Communications are considered to have high potential in providing support for communication-based vehicle safety applications. In this area, Infrastructure-to-Vehicle communications are one of the main use cases. Nevertheless, the outdoor communication channel is very problematic affecting the reliability o...

This article proposes a cost efficient and easy to implement frequency stabilization method orientated toward communication systems operating in an extensive temperature range, as the automotive or the aerospace applications. The proposed solution uses off-the-shelf components and it is optimized for very low power consumption. The novelty of this...

Communication-based vehicle safety technology represents one of the most promising solutions to enhance the safety and the efficiency of the transportation system. For this purpose, visible light communications (VLC) have great potential of development due to low-cost, widespread distribution, and unregulated radiation spectrum. Nevertheless, exist...

As communication-based safety applications are developed for the next generation of vehicle active safety systems, this article focuses on the benefits of using adaptive hysteresis circuits toward the development of environmental-adaptive VLC sensors with significantly enhanced performances. Thus, analytical and numerical approaches to analyse hyst...

In the context of an increasing preoccupation to reduce the number of road accidents, wireless communications have been identified as a promising solutions in this area. This paper presents the simulation results for a Visible Light Communications (VLC) sensor envisioned for vehicular communication applications. Since the outdoor VLC channel can be...

In the context of an increasing number of satellites orbiting around the Earth, developing a vast ground stations network becomes very important in order to be able to receive the satellite transmitted data. Consequently, this paper presents the aspects related to the implementation of a ground station for LEO satellites, located in Suceava city. T...

As the number of satellites orbiting around the Earth is significantly increasing, it is important to extend the ground station network, in order to be able to receive as much of the satellite transmitted data. In this context, this paper addresses the aspects related to the implementation of a ground station for LEO satellites, located in Suceava...

In the context of an increasing interest toward reducing the number of traffic accidents and of associated victims, communication-based vehicle safety applications have emerged as one of the best solutions to enhance road safety. In this area, visible light communications (VLC) have a great potential for applications due to their relatively simple...

As the demand for wireless communication technologies is exponentially increasing, using the visible light electromagnetic spectral region is a logical option. This article provides a general analysis of the IEEE 802.15.7 standard for optical communications using visible light, focusing on the PHY I, intended for outdoor applications. Moreover, the...

As the demand for wireless communication technologies is exponentially increasing, using the visible light electromagnetic spectral region is a logical option. This article provides a general analysis of the IEEE 802.15.7 standard for optical communications using visible light, focusing on the PHY I, intended for outdoor applications. Moreover, the...

This article presents a novel visible light communications receiver architecture, designed for automotive applications. A crucial problematic in this area is the design of a suitable receiver able to face the problems caused by the dynamic situations, by the long distances and also by the environmental conditions. In such circumstances, a solution...

Since more and more vehicles are using the transportation infrastructure, the safety and the efficiency of roads are of absolute importance. A solution to enhance the security of road transportation is by enabling wireless communications between vehicles and also with the traffic infrastructures (e.g. traffic lights, street lighting or traffic sign...

This paper presents an easy-to-use sensor aimed for traffic safety applications using visible light communications. A central problem in this area is the design of a suitable sensor able to enhance the conditioning of the signal and to avoid disturbances due to the environmental conditions. The visible light communication sensor proposed in this pa...

The scientific problematic of this PhD is centered on the usage of Visible Light Communications (VLC) in automotive applications. By enabling wireless communication among vehicles and also with the traffic infrastructure, the safety and efficiency of the transportation can be substantially increased. Considering the numerous advantages of the VLC t...

This paper addresses the issues related with the employment of wireless communication in vehicle safety applications. It focuses on the usage of the 5.9 GHz dedicated short range communications (DSRC) under the 802.11p standard. By analyzing the theoretical and experimental literature, the paper highlights the vulnerabilities associated with the DS...

This paper proposes a new architecture for outdoor low data rate visible light communication applications. Considering the performances of the digital filtering, the proposed architecture considers the usage of digital signal processing (DSP) as an alternative to the analog signal treatment. The key aspects related with the implementation of the VL...

This paper approaches the issues concerning the usage of the delay modulation as a coding technique used for outdoor Visible Light Communications (VLC) under PHY I layer of the IEEE 802.15.7 standard. We perform a comparative analysis between the Manchester code, as a traditional code, specified by the upper mentioned standard and the Miller code a...

This paper presents the investigation results concerning the negative effects of noise on the data signal in the case of Visible Light Communications (VLC). The motivation of this work was to offer a better understanding of the modifications of the data pulse in the presence of noise. Better understanding of the noise effect on the pulse width can...

This paper presents a visible light communication system, focusing mostly on the aspects related with the hardware design and implementation. The designed system is aimed to ensure a highly-reliable communication between a commercial LED-based traffic light and a receiver mounted on a vehicle. Enabling wireless data transfer between the road infras...

This paper presents the experimental results for a cooperative system that uses Infrastructure-to-Vehicle (I2V) and Vehicle-to-Vehicle (V2V) communication to increases the traffic safety, efficiency and adaptability. The wireless communication technique chosen to enable the data transmission is Visible Light Communication (VLC) due to its numerous...

In this paper, we present the second version of our system which is dedicated to Visible Light Communication (VLC) for automotive applications. It exhibits improved performances compared to the first version regarding the distance for which data are transmitted. It also includes real time variable gain adjustment in order to increase robustness aga...

The last couple of years, the vehicle industry tends to increase the performance of lights based on led technologies. Nowadays, led systems are used as a standard by motor vehicles manufacturers. Led lights present higher reliability and are more flexible regarding design or power adjustments. Furthermore, led systems are also very convenient for i...