A5021373987- Electromagnetic Fields and Biological Effects
- Wireless Communication Security Techniques
- Advanced MIMO Systems Optimization
- Wireless Body Area Networks
- Chaos-based Image/Signal Encryption
- Millimeter-Wave Propagation and Modeling
- Antenna Design and Analysis
- Advanced Wireless Communication Technologies
- Energy Harvesting in Wireless Networks
- Electromagnetic Compatibility and Measurements
- Cryptographic Implementations and Security
- Advanced Antenna and Metasurface Technologies
- Noise Effects and Management
- Health, Environment, Cognitive Aging
- Indoor and Outdoor Localization Technologies
- Underwater Vehicles and Communication Systems
- Wireless Signal Modulation Classification
- Telecommunications and Broadcasting Technologies
- Microwave Engineering and Waveguides
- DNA and Biological Computing
- Child Development and Digital Technology
- Molecular Communication and Nanonetworks
- Advanced Authentication Protocols Security
- Cryptography and Data Security
- Coding theory and cryptography
CEA LETI
2023-2024
Université Grenoble Alpes
2024
CEA Grenoble
2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2023-2024
Institut polytechnique de Grenoble
2024
Télécom Paris
2013-2023
Laboratoire Traitement et Communication de l’Information
2013-2023
Université Paris-Saclay
2013-2023
University of Balamand
2020
Centre National de la Recherche Scientifique
2015
The real-life short-term implications of electromagnetic fields (RF-EMF) on cognitive performance and health-related quality life have not been well studied. SPUTNIC study (Study Panel Upcoming Technologies to Non-Ionizing radiation Cognition) aimed investigate possible correlations between mobile phone human health, including cognition, sleep.Adult participants tracked various daily markers RF-EMF exposures (cordless calls, screen time 4 h prior each assessment) as three health outcomes...
In this paper, we exploit the artificial neural network (ANN) model for a spatial reconstruction of radio-frequency (RF) electromagnetic field (EMF) exposure in an outdoor urban environment. To end, have carried out drive test measurement campaign covering large part Paris, along route approximately 65 Km. The electric (E) strength has been recorded over wide band ranging from 700 to 2700 MHz. From these data, E-field is extracted and computed each frequency telecommunication operator....
Ensuring the precision of channel modeling plays a pivotal role in development wireless communication systems, and this requirement remains persistent challenge within realm networks supported by Reconfigurable In-telligent Surfaces (RIS). Achieving comprehensive reliable understanding statistics RIS-aided is an ongoing complex issue that demands further explo-ration. In paper, we empirically validate recently-proposed impedance-based RIS model accounts for mutual coupling at antenna array...
In this work, we present the results of an experi-mental validation use multiple Reconfigurable Intel-ligent Surfaces (RISs) in indoor scenarios. The setup employs a Transmitting and Reflecting RIS Ka band with more than 400 elements each. Two different 1-bit Unit Cell (UC) based on PIN -diode technologies have been designed to realize RISs. (T-RIS) is used Base Station (BS) side perform steering towards User Equipment (UE), or (R-RIS) acting as extender. channel responses are analysed over...
Paving the path toward fifth generation (5G) of wireless networks with a huge increase in number user equipment has strengthened public concerns on human exposure to radio-frequency electromagnetic fields (RF EMFs). This requires an assessment and monitoring RF EMF exposure, almost continuous way. Particular interest goes uplink (UL) assessed through transmission power mobile phone, due its close proximity body. However, UL transmit (TX) is not provided by off-the-shelf modem devices. In...
In wireless communication systems, in order to respond the perception of risks related electromagnetic field exposure and allocate radio resources, estimation received power map is an essential task a challenge. This paper proposes algorithm for estimating maps using U-net architecture based on convolutional neural networks. The transformed into image reconstruction by color mapping, where every pixel value represents intensity. designed model learns signal propagation characteristics...
Calling via Voice over IP using apps such as Skype, Viber and WhatsApp is common nowadays, but in traffic records, these calls are included with all the other data transfers. may lead to different exposure levels for people than usage since position which phone held could be web surfing. Telecom ParisTech has modified XMobiSense app, previously used several epidemiological settings, record details of The app updates crucial order adapt stunningly rapid evolution Android operating system.
In the recent years, a set of works have addressed inherent characteristics fading propagation channel in an information-theoretic framework oriented towards security. particular, for cryptographic purposes, secure key bits can be extracted from reciprocal radio channels, seen as shared source randomness between any two entities. this paper we intend to assess impact true features on security performance, by quantizing complex coefficients into discrete bits. To end, indoor measurements were...
A few years ago, physical layer based techniques have started to be considered as a way improve security in wireless communications. well known problem is the management of ciphering keys, both regarding generation and distribution these keys. alleviate such difficulties use common source randomness for legitimate terminals, not accessible an eavesdropper. This case fading propagation channel, when exact or approximate reciprocity applies. Although this principle has been long, so many works...
Physical layer security is a method to ensure the confidentiality of wireless communication from encryption keys exploiting randomness reciprocal propagation channel between pair legitimate users, Alice and Bob. This achieved owing decorrelation these channels that experienced by third terminal (Eve), acting as an eavesdropper. In this work, we evaluate secret key capacity simple model, based on disc scatterers. The model allows consider any distance Bob Eve within disc, thus not limited...
Small cells, novel low-powered base stations with local range, are nowadays investigated in order to improve the radio coverage and capacity macro cell layer. The frequency exposure induced such cells is unknown. Hence, we assess this paper, through experimental measurements, impact of an LTE small cluster on by a mobile handset. With respect show that deployment provides better terms throughput while minimizing
In this paper, a new protocol is proposed for securing both authentication and communication in wireless public networks. It relies on the combination of two techniques presented article: Tag Signal (TS) Secret Key Generation (SKG). First, tag signals are used to securely exchange identification information, perform Channel Frequency Response (CFR) provide controlled radio advantage legitimate users. Then secret keys generated using authenticated CFR protect communication. addition...
DEVIN is a miniaturized personal electromagnetic (EM) exposimeter that allows recording powers emitted by the mobile phone as well identifying user activities along day. It simply hardware integrated into shell of smartphone. In context epidemiological studies, required to collect data from volunteers over long period time, e.g., week. This implies critical challenge related autonomy its battery, which should be charged once per One solution extend battery consists on decreasing sampling...
Reconfigurable Intelligent Surfaces (RISs) are announced as a truly transformative technology, capable of smartly shaping wireless environments to optimize next generation communication networks. Among their numerous foreseen applications, Reflective RISs (RRISs) have been shown theoretically beneficial not only enable localization through controlled multipath in situations where conventional systems would fail (e.g., with too few available base stations (BSs) and/or under radio blockages)...
We aim in the present paper to address impact of installing indoor distributed antenna system (distAS) on human exposure radio-frequency electromagnetic field (RF-EMF). note that distAS aims extend coverage and improve wireless communication quality. performed measurement campaigns subway stations, where are deployed. The is studied by considering two scenarios turned either or off. electric strength measured at different distances distAS, for all frequency bands operators. results show DL...
Reconfigurable Intelligent Surfaces (RISs) are announced as a truly transformative technology, capable of smartly shaping wireless environments to optimize next-generation communication networks. Among their numerous foreseen applications, Reflective RISs (RRISs) have been shown theoretically beneficial not only enable localization through controlled multipath in situations where conventional systems would fail (e.g., with too few available base stations (BSs) and/or under radio blockages)...