26 papers
Feynman Meets Turing: The Curse of Quantum Universality
Yannik N. Böck, Holger Boche, Frank H. P. Fitzek
We consider a formal model of quantum circuit description languages (QCDLs) in which semantically meaningful programs correspond to computable unitary matrices. We show that any se…
VaporISAC: Integrated Sensing and Communication via Molecular Signals
Sunasheer Bhattacharjee, MartÃn Schottlender, Pit Hofmann +3
Conventional electromagnetic (EM)-based integrated sensing and communication (ISAC) systems degrade in cluttered, obstructed, and radio-frequency-hostile environments, while macros…
Identification Codes and Post-Shannon Communication: Theory, Architectures, and Emerging Applications
Wafa Labidi, Kumar Nilesh, Johannes Rosenberger +5
The paper surveys identification (ID) coding, a communication paradigm where receivers only test whether a specific message was sent, enabling double‑exponential growth in identifi…
Evaluating Encoding Strategies for Closed-Loop Classification in Biological Neural Networks
Martin Schottlender, Veronika Volkova, Pengjie Zhou +3
The paper compares several ways of encoding visual information into stimulation patterns for cultured biological neural networks and finds that burst-based temporal encoding achiev…
Closed-form Solution of Wahba's Problem for Pairwise Similar Quaternions
Hristina Radak, Christian Scheunert, Frank H. P. Fitzek
Wahba's problem is fundamental to spacecraft attitude estimation, seeking the optimal rotation that minimizes the weighted misalignment between sets of vector observations. Traditi…
On solutions of singular Sylvester equations in quaternions
Hristina Radak, Christian Scheunert, Frank H. P. Fitzek
The quaternionic equations ax-xb=0 and ax-xb=c are investigated, which are called homogeneous and inhomogeneous Sylvester equations, respectively. Conditions for the existence of s…