A New Look at Cell-Free Massive MIMO: Making It Practical With Dynamic Cooperation
Abstract
This paper takes a new look at Cell-free Massive MIMO (multiple-input multiple-output) through the lens of the dynamic cooperation cluster framework from the Network MIMO literature. The purpose is to identify and address scalability issues that appear in prior work. We provide distributed algorithms for initial access, pilot assignment, cluster formation, precoding, and combining that are scalable in the sense of being implementable with arbitrarily many users. Interestingly, the suggested precoding and combining outperform conjugate beamforming and matched filtering, respectively, while also being fully distributed.
Cite
@article{arxiv.1906.10853,
title = {A New Look at Cell-Free Massive MIMO: Making It Practical With Dynamic Cooperation},
author = {Emil Björnson and Luca Sanguinetti},
journal= {arXiv preprint arXiv:1906.10853},
year = {2019}
}
Comments
To appear at the 2019 IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (IEEE PIMRC 2019), 6 pages, 5 figures