Array Placement in Distributed Massive MIMO for Power Saving considering Environment Information
Yi-Hang Zhu, Gilles Callebaut, Liesbet Van der Perre, Fran\c{c}ois, Rottenberg

TL;DR
This paper explores environment-aware array placement in distributed massive MIMO systems to enhance energy efficiency, especially in small cells, by using graph-based propagation models validated through ray-tracing simulations.
Contribution
It introduces environment-informed propagation models using graph representations for array placement optimization in D-mMIMO systems, improving energy savings over traditional Euclidean models.
Findings
Higher energy efficiency with environment-based placement models.
Over 5 dB power saving at 96% signal coverage.
Validation through ray-tracing simulations confirms effectiveness.
Abstract
Distributed massive MIMO (D-mMIMO) has been considered for future networks as it holds the potential to offer superior capacity while enabling energy savings in the network. A D-mMIMO system has multiple arrays. Optimizing the locations of the arrays is essential for the energy efficiency of the system. In existing works, array placement has been optimized mostly based on common channel models, which rely on a given statistical distribution and Euclidean distance between user locations and arrays. These models are justified if applied to sufficiently large cells, where the statistical description of the channel is expected to fit its empirical condition. However, with the advent of small cells, this is no longer the case. The channel propagation condition becomes highly environment-specific. This paper investigates array placement optimization with different ways of modeling the…
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Taxonomy
TopicsAdvanced MIMO Systems Optimization · Millimeter-Wave Propagation and Modeling · Energy Harvesting in Wireless Networks
