Annonce

PhD position at IMT Nord Europe: Resource allocation for energy sobriety in secure wireless communication systems impaired by nonlinearities

11 Avril 2024

Catégorie : Doctorant

Summary: Energy sobriety, especially in the digital world, is among the key issues to be addressed to tackle the environmental challenges of our time. While the environmental impact of wireless networks has been neglected for years, the paradigm is currently changing, pushing towards the design of energy efficient networks and green communications. In addition, security, relying upon the concept of physical layer security, becomes a vital feature of wireless networks.

We consider here two main research paths: either maximizing the secrecy energy efficiency, defined as a trade-off between the network achievable secrecy sum-rate and the consumed power; or considering just enough networks, where only the necessary amount of power required to meet the end users quality of service (QoS) and security constraints is consumed.

Furthermore, communication systems are composed of many hardware elements presenting nonlinear characteristics, which are rarely taken into account, but nonetheless reduce the signal to noise ratio, leading to lower data rate as well as energy efficiency degradation.

Our research project aims to address these issues by developing new resource allocation algorithms that maximize the secrecy energy efficiency, or minimize the power consumption while reaching end users QoS constraints, when nonlinearities are taken into account.

Objectives: Within this PhD, we intent to focus on the following objectives:

1. Modeling the nonlinearities and deriving the relevant metrics;
2. Designing resource allocation algorithms for SEE maximization and just enough network with security enhanced QoS.

The obtained results will continuously be disseminated through standard scientific channels and open access publications. We will target peer reviewed major international conferences of the domain, such as IEEE ICC, IEEE Globecom, IEEE SPAWC... as well as adequate IEEE, ACM, Springer journals (IEEE Trans. on Wireless Communications, IEEE Trans. on Communications, IEEE Trans. On Green Communications and Networking…). Publications will also be made available on HAL. Moreover, the source codes used for our publications will be accessible in an open manner.

Additional information: The successful candidate will be a member of the CERI Systèmes Numériques (Center for Digital systems) of IMT Nord Europe. IMT Nord Europe is located in Villeneuve d’Ascq, at approximately 1h30 by TGV train from center Paris.

The successful candidate can start as early as September 2024.
Applications are sought from France, EU and international candidates with an outstanding academic background. The applicants should hold a Master degree (BAC+5) and have a strong background in either electrical engineering (with a focus on telecommunications and/or signal processing) or applied mathematics. A good English level in writing, reading and speaking is also required. Finally, having a strong mathematical background and/or computer literacy skills (MatLab, Python, C++, etc.) is a definite plus.

How to apply: Interested candidates have to send their detailed CV, academic records (from Bsc to Msc level), at least two academic referees and a short motivation letter via email to the contacts below.

Application deadline: April 30th, 2024
Applications will be received until April 30th, 2024 and will be considered as they arrive, therefore early application is highly encouraged.

Contacts:

Anne Savard
Email: anne.savard@imt-nord-europe.fr
Webpage: https://recherche.imt-nord-europe.fr/personnel/savard-anne/

Arthur Louchart
Email: arthur.louchart@imt-nord-europe.fr
Webpage: https://recherche.imt-nord-europe.fr/personnel/louchart-arthur/

References:

[1] A. Savard, G. Cervia, M. Alam, and A. Louchart, “Secrecy energy-efficient multi-user NOMA: Closed-form solution to bi-criterion formulation,” Accepted, EuCNC 2024.
[2] A. Louchart, P. Ciblat, and C. Poulliat, “Sum-capacity of Uplink Multiband Satellite Communications with Nonlinear Impairments,” in ICC 2021, Montreal, QC, Canada, Jun. 2021, pp. 1–6.
[3] A. Louchart, E. Tohidi, P. Ciblat, D. Gesbert, E. Lagunas, and C. Poulliat, “Some power allocation algorithms for cognitive uplink satellite systems,” EURASIP JWCN, vol. 2023, no. 1, pp. 32, Apr. 2023.
[4] H. El Hassani, A. Savard, E. V. Belmega, and R. C. de Lamare, “Multi-user downlink NOMA systems aided by ambient backscattering: Achievable rate regions and energy-efficiency maximization,” IEEE Trans. on Green Commun. and Netw., vol. 7, No. 3, pp. 1135–1148, Sept. 2023.
[5] H. El Hassani, A. Savard, E. V. Belmega, "Adaptive NOMA in time-varying wireless networks with no CSIT/CDIT relying on a 1-bit feedback", IEEE Wireless Communications Letters, Vol. 10, No. 4, April 2021, pp. 750-754.
[6] Y. Benatia, A. Savard, R. Negrel, E. V. Belmega, "Unsupervised deep learning to solve power allocation problems in cognitive relay networks", IEEE ICC Workshop, Seoul, South Korea, 2022.