3 papers
math.PR2026
On the Asymptotic of Coupled Spherical Integrals: An Operator-Valued Extension of the Free Fourier Transform
Levi-Pascal V. G. Bohnacker, Ralf R. Müller, Ralf R. Müller
In this paper the asymptotic exponent of coupled Harish-Chandra-Itzykson-Zuber (HCIZ) integrals is studied. We consider rank-one HCIZ integrals which are coupled through additi…
eess.SP2026
Geometric Analysis of Blind User Identification for Massive MIMO Networks
Levi Bohnacker, Ralf R. Müller
Applying Nearest Convex Hull Classification (NCHC) to blind user identification in a massive Multiple Input Multiple Output (MIMO) communications system is proposed. The method is…
cs.IT2024
Multi-Antenna Towards Inband Shift Keying
Ralf R. Müller
We propose a new continuous phase frequency shift keying that is particularly suited for multi-antenna communications when the link budget is critical and beam alignment is problem…