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arXiv · 1801.07967

A Distributed Processing Architecture for Modular and Scalable Massive MIMO Base Stations

Erik Bertilsson·Oscar Gustafsson·Erik G. Larsson
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Abstract

In this work, a scalable and modular architecture for massive MIMO base stations with distributed processing is proposed. New antennas can readily be added by adding a new node as each node handles all the additional involved processing. The architecture supports conjugate beamforming, zero-forcing, and MMSE, where for the two latter cases a central matrix inversion is required. The impact of the time required for this matrix inversion is carefully analyzed along with a generic frame format. As part of the contribution, careful computational, memory, and communication analyses are presented. It is shown that all computations can be mapped to a single computational structure and that a processing node consisting of a single such processing element can handle a broad range of bandwidths and number of terminals.

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Erik Bertilsson, Oscar Gustafsson, Erik G. Larsson. 2018-01-24. A Distributed Processing Architecture for Modular and Scalable Massive MIMO Base Stations. https://arxiv.org/abs/1801.07967

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