3 papers
quant-ph2026
A Converse Bound via the Nussbaum-SzkoÅa Mapping for Quantum Hypothesis Testing
Jorge Lizarribar-Carrillo, Gonzalo Vazquez-Vilar, Tobias Koch
Quantum hypothesis testing concerns the discrimination between quantum states. This paper introduces a novel lower bound for asymmetric quantum hypothesis testing that is based on…
cs.IT2025
On Noncoherent Multiple-Antenna Rayleigh Block-Fading Channels at Finite Blocklength
Chao Qi, Tobias Koch
This paper investigates the maximum coding rate at which data can be transmitted over a noncoherent, multiple-input, multiple-output (MIMO) Rayleigh block-fading channel using an e…
cs.IT2025
Fundamental Limits of Noncoherent Massive Random Access Networks
Grace Villacrés, Tobias Koch, Gonzalo Vazquez-Vilar
This paper studies the capacity of massive random-access cellular networks, modeled as a MIMO fading channel with an infinite number of interfering cells. To characterize the symme…