25 citations · 41 across the 18 of their papers we have counts for
27 papers
Ballistic transport and crystallographic control in altermagnetic quantum rings
Edilberto O. Silva
We study coherent two-terminal transport through a finite-width -wave altermagnetic quantum ring with nonmagnetic leads. A confined Aharonov--Bohm flux remains exactly per…
Autonomous Discovery of Wireless Communications Algorithms
Fayçal Aït Aoudia, Jakob Hoydis, Sebastian Cammerer +4
Large language model (LLM)-driven evolutionary search is an emerging algorithm-discovery paradigm that has already produced novel results in several scientific fields. Yet its appl…
The AI Telco Engineer: Toward Autonomous Discovery of Wireless Communications Algorithms
Fayçal Aït Aoudia, Jakob Hoydis, Sebastian Cammerer +3
Agentic AI is rapidly transforming the way research is conducted, from prototyping ideas to reproducing results found in the literature. In this paper, we explore the ability of ag…
A 0.32 mm 100 Mb/s 223 mW ASIC in 22FDX for Joint Jammer Mitigation, Channel Estimation, and SIMO Data Detection
Jonas Elmiger, Fabian Stuber, Oscar Castañeda +2
We present the first single-input multiple-output (SIMO) receiver ASIC that jointly performs jammer mitigation, channel estimation, and data detection. The ASIC implements a recent…
A Jammer-Resilient 2.87 mm 1.28 MS/s 310 mW Multi-Antenna Synchronization ASIC in 65 nm
Flurin Arquint, Oscar Castañeda, Gian Marti +1
We present the first ASIC implementation of jammer-resilient multi-antenna time synchronization. The ASIC implements a recent algorithm that mitigates jamming attacks on synchroniz…
Sparse MIMO-OFDM Channel Estimation via RKHS Regularization
James Delfeld, Gian Marti, Chris Dick
We propose a method for channel estimation in multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) wireless communication systems. The method exp…
Joint Jammer Mitigation and Data Detection
Gian Marti, Christoph Studer
Multi-antenna (or MIMO) processing is a promising solution to the problem of jammer mitigation. Existing methods mitigate the jammer based on an estimate of its spatial signature t…
GNSS Jammer and Spoofer Mitigation via Multi-Antenna Processing
Jonas Elmiger, Gian Marti, Christoph Studer
Modern positioning relies on radio signals from global navigation satellite systems (GNSS). Their low receive power renders these radio signals susceptible to jamming attacks, in w…
Universal MIMO Jammer Mitigation
Gian Marti, Christoph Studer
Multi-antenna processing enables jammer mitigation through spatial filtering, provided that the receiver knows the spatial signature of the jammer interference. Estimating this sig…
PyJama: Differentiable Jamming and Anti-Jamming with NVIDIA Sionna
Fabian Ulbricht, Gian Marti, Reinhard Wiesmayr +1
Despite extensive research on jamming attacks on wireless communication systems, the potential of machine learning for amplifying the threat of such attacks, or our ability to miti…
A Jammer-Mitigating 267 Mb/s 3.78 mm 583 mW 328 Multi-User MIMO Receiver in 22FDX
Florian Bucheli, Oscar Castañeda, Gian Marti +1
We present the first multi-user (MU) multiple-input multiple-output (MIMO) receiver ASIC that mitigates jamming attacks. The ASIC implements a recent nonlinear algorithm that perfo…
Fundamental Limits for Jammer-Resilient Communication in Finite-Resolution MIMO
Gian Marti, Alexander Stutz-Tirri, Christoph Studer
Spatial filtering based on multiple-input multiple-output (MIMO) processing is a powerful method for jammer mitigation. In principle, a MIMO receiver can null the interference of a…
Accurate Direct Positioning in Distributed MIMO Using Delay-Doppler Channel Measurements
Benjamin J. B. Deutschmann, Christian Nelson, Mikael Henriksson +5
Distributed multiple-input multiple-output (D-MIMO) is a promising technology for simultaneous communication and positioning. However, phase synchronization between multiple access…
Jammer-Resilient Time Synchronization in the MIMO Uplink
Gian Marti, Flurin Arquint, Christoph Studer
Spatial filtering based on multiple-input multiple-output (MIMO) processing is a promising approach to jammer mitigation. Effective MIMO data detectors that mitigate smart jammers…
LoFi User Scheduling for Multiuser MIMO Wireless Systems
Alexandra Gallyas-Sanhueza, Gian Marti, Victoria Palhares +2
We propose new low-fidelity (LoFi) user equipment (UE) scheduling algorithms for multiuser multiple-input multiple-output (MIMO) wireless communication systems. The proposed method…
Active Eavesdropper Mitigation via Orthogonal Channel Estimation
Gian Marti, Christoph Studer
Beamforming is a powerful tool for physical layer security, as it can be used for steering signals towards legitimate receivers and away from eavesdroppers. An active eavesdropper,…
High Dynamic Range mmWave Massive MU-MIMO with Householder Reflections
Victoria Palhares, Gian Marti, Oscar Castañeda +1
All-digital massive multiuser (MU) multiple-input multiple-output (MIMO) at millimeter-wave (mmWave) frequencies is a promising technology for next-generation wireless systems. Low…
Single-Antenna Jammers in MIMO-OFDM Can Resemble Multi-Antenna Jammers
Gian Marti, Christoph Studer
In multiple-input multiple-output (MIMO) wireless systems with frequency-flat channels, a single-antenna jammer causes receive interference that is confined to a one-dimensional su…
Universal MIMO Jammer Mitigation via Secret Temporal Subspace Embeddings
Gian Marti, Christoph Studer
MIMO processing enables jammer mitigation through spatial filtering, provided that the receiver knows the spatial signature of the jammer interference. Estimating this signature is…
Joint Jammer Mitigation and Data Detection for Smart, Distributed, and Multi-Antenna Jammers
Gian Marti, Christoph Studer
Multi-antenna (MIMO) processing is a promising solution to the problem of jammer mitigation. Existing methods mitigate the jammer based on an estimate of its subspace (or receive s…
Bit Error and Block Error Rate Training for ML-Assisted Communication
Reinhard Wiesmayr, Gian Marti, Chris Dick +2
Even though machine learning (ML) techniques are being widely used in communications, the question of how to train communication systems has received surprisingly little attention.…
Mitigating Smart Jammers in Multi-User MIMO
Gian Marti, Torben Kölle, Christoph Studer
Wireless systems must be resilient to jamming attacks. Existing mitigation methods based on multi-antenna processing require knowledge of the jammer's transmit characteristics that…
Beam Alignment for the Cell-Free mmWave Massive MU-MIMO Uplink
Jannik Brun, Victoria Palhares, Gian Marti +1
Millimeter-wave (mmWave) cell-free massive multi-user (MU) multiple-input multiple-output (MIMO) systems combine the large bandwidths available at mmWave frequencies with the impro…
Mitigating Smart Jammers in MU-MIMO via Joint Channel Estimation and Data Detection
Gian Marti, Christoph Studer
Wireless systems must be resilient to jamming attacks. Existing mitigation methods require knowledge of the jammer's transmit characteristics. However, this knowledge may be diffic…