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Weave and Conquer: A Measurement-based Analysis of Dense Antenna Deployments

Abstract:

Massive MIMO is bringing significant performance improvements in the context of outdoor macrocells, such as spatially confined communication and high antenna gains to overcome pathloss. In this paper, we explore how these benefits scale to indoor scattering-rich deployments based on a dense indoor measured Massive MIMO dataset. First, we design and implement three different and relevant topologies to position our 64 antennas in the environment: Massive MIMO, RadioStripes and RadioWeaves topologies. Second, we measure 252004 indoor channels for a 3x3m2 area for each topology, using an automated user positioning and measurement system. Using this dense dataset, we provide a unique analysis of system-level properties such as pathloss and spatial focusing. Our measurement-based analyses verify and quantify that distributing the antennas throughout the environment results in improved propagation fairness and higher spatial confinement. The dataset is publicly available and can serve as a reference database for benchmarking of future indoor communication systems and communication models. We outline the observed implementation challenges, and list diverse RD challenges that can benefit from using this dataset.