Sub-Terahertz (sub-THz) and Terahertz (THz) technologies, which are often referred as beyond-5G communication, are today attracting a great interest from both academia and industry. The transmission of information in the spectrum above 90GHz, up to 300GHz allows the use of huge bandwidths, from ones to tens of GHz. As the millimetre-wave communication systems will become mature with the emergence of 5G technologies, the focus of the research activities is naturally moving to the sub-THz range. The continuous increase in wireless capacity makes the bandwidth requirements always more ambitious. Ultra large bandwidths can be used for terabit-per-second (Tb/s) short-range wireless communications, or ultra-high capacity backhaul or kiosk applications, among others.
Nowadays, the sub-THz/THz techniques are far from the maturity achieved in microwave, millimetre-wave, and photonics. The key issue is that such systems cannot be implemented with existing technology especially when it comes to integrated devices. First concern is the design of high-performance reasonable-cost integrated circuits that include powerful sub-THz/THz sources, high-gain antennas, and sensitive sub-THz detectors.
In addition to those hardware considerations, the characterization and modelling of the PHY-layer components, including the propagation channel (line-of-sight, obstructed line-of-sight, and multi-paths propagation models), RF performance/constraints (e.g., phase noise) and antennas as well as network topologies are of primary importance to assess and optimize the investigated sub-THz/THz communication systems.
Note that many recent advancements with different technologies is finally closing the so-called THz gap. From one hand, we have the electronic approach, where semiconductor technologies have demonstrated record performance in terms of output power, noise figure, and power-added efficiency at sub-THz frequencies. On the other hand, in a photonic approach, optical down-conversion systems and quantum cascade lasers are rising as potential candidates for high-power high-speed THz-band communication systems.

The goal of this GDR-ISIS event, which will be held as a virtual event, is to share the recent progress made in the emerging sub-THz/THz communication domain, relying on innovative transmission and detection techniques. The event includes invited speakers giving talks on main challenges and recent progress in the field of sub-THz/THz, and dedicated short presentations on applications or technologies, selected from an open call based on abstract submissions. Academic and Industry researchers as well as PhD students are welcomed for contributions. The event will be the 20th of May, start time 9:25 and ending time at 17:30.

Please find below the event structure:

• 9:25 – Opening the event
• 9:30 – Invited talks
  • 9:30-10:15 – “BRAVE ANR project advances on THz-Communications”, by Yoann Corre, SIRADEL, France
  • 10:15-10:55 – “THz Communications and Instrumentation Enabled by Photonics” by Prof. Guillaume Ducournau, IEMN-CNRS, Université Lille (France).
• 11:05 – Technical papers
  • P1: Basem Aqlan, Mohamed Himdi, Hamsakutty Vettikalladi, and Laurent Le-Coq, “All-Metal Planer Antenna Using Laser-CuttingTechnology for 6G Sub-THz Wireless Communications”. Institut d’Electronique et des Technologies du numéRique (IETR)-Rennes, Université de Rennes 1 (France). King Saud University, Riyadh, (Saudi Arabia).
  • P2: Daniel Bourreau, Alain Péden, “Characterization of Solids and Non-Solids Materials up to 330 GHz,
  • Modelling of Paints & Rain Effects on a Radome “. IMT Atlantique Département MO LAB-STICC (UMR CNRS 6285).
  • P3: Nicolas Cassiau, Loïc Marnat, “Beam Alignment Strategy Under Hardware Constraints for D-Band Communications (the DRAGON project)“, CEA-Leti, Université Grenoble Alpes, France.
• 12:30 – Lunch break
• 14:00 – Invited talks
  • 14:00-14:45 – “Terabit/s Channel Coding for Next Generation Wireless Communications: Outcomes of the EPIC Project and Future Steps” by Dr. Stefan Weithoffer, from IMT Atlantique, (Bretagne-France).
  • 14:45-15:30 – “Sub-THz: Channel Model, Numerology and Waveform”, by Dr. Sayed Hassan, Nokia-FR/Paris-Saclay (France).
• 15:40 – Technical papers
  • P4: Majed Saad, Jacques Palicot, Faouzi Bader, Ali Chamas Al Ghouwayel, and Hussein Hijazi, “Filter Index Modulation Domain for all 5G and Beyond Applications“. CentraleSupélec-Rennes campus, France. School of Engineering, Lebanese International University LIU, Lebanon. Institut Supérieur d’Electronique de Paris, France. EFREI Paris, France.
  • P5: Laurent Maviel, Yoann Corre, Djamel Amar, “Assessing the Deployment of a Dense Outdoor Wireless Backhaul and Fixed Wireless Access (FWA) Network at 150 GHz Based on Realistic Constraints“. SIRADEL, Saint-Grégoire, France.
  • P6: Alvaro Pascual-Gracia, Adham Mahmoud, Mauro Ettorre, Ronan Sauleau, David González Ovejero, “ Some Recent Developments on Sub-THz and mm-Wave Antennas at IETR “. Institut d’Electronique et des Technologies du numéRique (IETR)-Rennes.
• 17:00 – Panel discussion: THz main applications and challenges
  • Stefan Weithoffer, IMT Atlantique, Brest.
  • Guillaume Ducournau, IEMN, Université de Lille.
  • Philippe Séhier, Nokia Bell Labs, Saclay.
• 17:30 – End of the GDR-ISIS day.

Organisers : Carlos Faouzi Bader (ISEP/CentraleSupélec faouzi.bader@isep.fr), Jean-Baptiste Doré (CEA, jean-baptiste.dore@cea.fr), Yoann Corre (SIRADEL, ycorre@siradel.com), Emmanuel Faussurier (ANFR, emmanuel.faussurier@anfr.fr).

If interested, you can register for the event by this link.