News and Announcements

• New IEEE IET Communications article

  October 07, 2024
  
  Our article Survey on Coherent Multiband Splicing Techniques for Wideband Channel Characterization has been accepted for publication in IET Communications. Coherent multi-band splicing is an optimal solution for extending existing band-limited communication systems to support high-precision sensing applications. Conceptually, the communication system performs narrow-band measurements at different center frequencies, which are then concatenated to increase the effective bandwidth without altering the sampling rate. This can be done in parallel for multiple non-contiguous subbands or by hopping across the different bands. However, multi-band splicing poses significant challenges, particularly in compensating for phase offsets and hardware distortions before stitching the acquired samples, which can be distributed in contiguous or non-contiguous manners. In this survey paper, we study the state of the art in coherent multi-band splicing and identify open research questions. For beginners in the field, this review serves as a guide to the most relevant literature, enabling them to quickly catch up with the current achievements. For experts, we highlight open research questions that require further investigation.
  (link to more information)

• New EU project OWTSN

  September 23, 2024
  
  Our joint proposal with R3 Solutions, OWTSN: Open Wireless Time-Sesnsitive Networks for 5G-integrated Industrial Systems, has been accepted for funding by the EU-(co)funded TARGET-X program. In this project, we will enable time-sensitivite communication over wireless technologies, by combining IEEE 802.1 TSN protocols with Wi-Fi and 5G, to address the emerging requirements of industrial systems.
  (link to more information)

• New IEEE Open Journal of Vehicular Technology article

  September 22, 2024
  
  Our article LiFi for Industry 4.0: Main Features, Implementation and Initial Testing of IEEE Std 802.15.13 has been accepted for publication in IEEE Open Journal of Vehicular Technology. As industrial communication is developed further to increase flexibility through wireless communication, networked optical wireless communications (OWC), also known as LiFi, emerges as a promising candidate technology due to its unlicensed spectrum and relatively deterministic propagation. This paper outlines the features of the new IEEE Std 802.15.13-2013 for OWC and presents details of our prototype implementation thereof as well as first experiments. Our prototype includes a central coordinator, realized purely in software, running on commodity server hardware. It connects to distributed ceiling-mounted optical wireless frontends via a packet-switched network (Ethernet) and is able of forming them into adaptive virtual cells on a per-user basis. This approach enables improved reliability through multiple-input multiple-output (MIMO) transmission and smooth mobility. We implemented the Pulsed Modulation PHY (PM-PHY) on a commercially available field programmable gate array (FPGA) evaluation board. Initial test results indicate that the PM-PHY covers typical distances of up to 6 m between the ceiling and the mobile device. The MAC can realize zero packet loss besides deterministic latency values below 4 ms.
  (link to more information)

• Research talks at the Si-Mposium

  September 12, 2024
  
  Our group members Sunasheer Bhattacharjee, Saswati Pal, Lisa Debus, and the research student Laurenz Ebner presented three research topics at Si-Mposium 2024. The event is organized by Der Simulierte Mensch research group in TU Berlin. The topics were related to molecular communication techniques for decoding the human breath, the development of intra-body communication links in the nanoscale, and semantic communication strategies in the multi-scale for in-body applications.
  

• Keynote at IEEE ANDESCON 2024

  September 12, 2024
  
  Falko Dressler gave a keynote titled 6G Edge Computing: Improving Coverage and Resilience at IEEE ANDESCON 2024, which was held in Cusco, Peru.
  (link to more information)

• Paper Presentations at European Wireless 2024

  September 11, 2024
  
  Joana Angjo presented our paper titled "Improving Multi-Operator Coexistence in Distributed-IRS Assisted Networks" and Rathinamala Vijay presented our paper titled "Resilient New Space Communication using Cognitive Radio for LEO Satellites" at European Wireless (EW 2024), which took place in Brno, Czechia.
  

• Paper Presentation at IEEE ANDESCON 2024

  September 11, 2024
  
  Jorge Torres Gómez presented our paper titled Assessing the Interplay between Localization Accuracy and Interference in IRS-assisted Links at IEEE ANDESCON 2024, which took place in Cusco, Peru.
  

• New IEEE Transactions on Communications article

  September 09, 2024
  
  Our article Byzantine Fault Tolerant Consensus in Open Wireless Networks via an Abstract MAC Layer has been accepted for publication in IEEE Transactions on Communications. The openness of wireless networks opens the door to Byzantine attacks on the physical channels, making the communications unreliable and resulting in more challenges in achieving consensus among mobile devices. To address this issue, this paper studies the Byzantine-fault-tolerant (BFT) consensus problem based on an unreliable Byzantine communication model. Different from the previous works requiring stable communications between the honest nodes, considering the unreliable communication makes our problem more realistic but also harder. Based on the unreliable communication model, we first implement a BFT abstract MAC (absMAC) layer with a distributed and randomized multi-channel communication algorithm.
  (link to more information)

• Paper Presentation at IEEE PIMRC 2024

  September 05, 2024
  
  Sascha Rösler presented our paper titled "ResCTC: Resilience in Wireless Networks through Cross-Technology Communication" at the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC 2024), which took place in Valencia, Spain.
  

• Falko Dressler joined WIoT @ Northeastern University as visiting faculty

  September 03, 2024
  
  Falko Dressler spends a sabbatical at the Institute for the Wireless Internet of Things (WIoT) at Northeastern University in Boston, MA during the fall semester 2024. His focus is on intensifying the ongoing and starting new research collaborations.
  (link to more information)

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