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arXiv · 1802.07065

Distributed Power Control in Downlink Cellular Massive MIMO Systems

Trinh Van Chien·Emil Björnson·Erik G. Larsson·Tuan Anh Le
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Abstract

This paper compares centralized and distributed methods to solve the power minimization problem with quality-of-service (QoS) constraints in the downlink (DL) of multi-cell Massive multiple-input multiple-output (MIMO) systems. In particular, we study the computational complexity, number of parameters that need to be exchanged between base stations (BSs), and the convergence of iterative implementations. Although a distributed implementation based on dual decomposition (which only requires statistical channel knowledge at each BS) typically converges to the global optimum after a few iterations, many parameters need to be exchanged to reach convergence.

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Trinh Van Chien, Emil Björnson, Erik G. Larsson, Tuan Anh Le. 2018-02-20. Distributed Power Control in Downlink Cellular Massive MIMO Systems. https://arxiv.org/abs/1802.07065

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