Randomized trial demonstrates enhanced system spectral efficiency in multi-user MIMO communications, suggesting a novel approach to optimize signal reception.
Key Points
The research aims to maximize system spectral efficiency in multi-user MIMO communications through an innovative rotatable aperture array architecture.
Developed an alternating optimization-based algorithm to jointly optimize CAPA beamformers and boresight direction.
Utilized calculus of variation for BS-CAPA beamformer optimization.
Applied gradient-ascent method for optimizing user CAPA boresight direction.
R-CAPAs achieve significantly higher system spectral efficiency compared to traditional static CAPAs.
Results indicate enhanced degrees of freedom in signal optimization.