From the 1 of 8 linked papers with an AI index.
8 papers
Unified Evaluation Methodology for AI-Native Integrated Sensing and Communication
Filip Lemic, Andra Blaga, Francesco Devoti +24
The paper proposes a unified architecture and evaluation methodology for AI‑native integrated sensing and communication (ISAC) systems, including a three‑stage validation pipeline…
CRB-Optimal Arrays and Waveforms in Active Sensing: Role of Redundancy and Spatial Covariance of Array Geometry
Ids van der Werf, Robin Rajamäki, Geert Leus
This paper characterizes the performance limits of optimal array designs using orthogonal and coherent waveforms for both linear and planar arrays. For orthogonal waveforms, we sho…
On the Impossibility of Lossless Waveform Rank Reduction for Certain Redundant Arrays
Robin Rajamäki, Piya Pal
Efficient use of spatio-temporal resources, including sensor arrays and transmit waveforms, is a key challenge in modern MIMO active sensing systems. This paper studies the impact…
New Insights into Channel vs Subspace Codes for Large-Scale Beamspace MIMO Channel Sensing
Parthasarathi Khirwadkar, Robin Rajamäki, Piya Pal
This paper provides novel insights into channel and subspace codes in nonadaptive channel sensing with a single RF chain. Observing that this problem naturally maps to a noncoheren…
DoA Estimation with Sparse Arrays: Effects of Antenna Element Patterns and Nonidealities
Niko Lindvall, Mikko Heino, Robin Rajamäki +2
This paper studies the effects of directional antenna element complex gain patterns and nonidealities in direction of arrival (DoA) estimation. We compare sparse arrays and classic…
Beyond-Diagonal RIS: Adversarial Channels and Optimality of Low-Complexity Architectures
Atso Iivanainen, Robin Rajamäki, Visa Koivunen
Beyond-diagonal reconfigurable intelligent surfaces (BD-RISs) have recently gained attention as an enhancement to conventional RISs. BD-RISs allow optimizing not only the phase, bu…