University of Oulu

B. Gouda, I. Atzeni and A. Tölli, "Distributed Precoding Design for Cell-Free Massive MIMO Systems," 2020 IEEE 21st International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Atlanta, GA, USA, 2020, pp. 1-5, doi: 10.1109/SPAWC48557.2020.9154279

Distributed precoding design for cell-free massive MIMO systems

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Author: Gouda, Bikshapathi1; Atzeni, Italo1; Tölli, Antti1
Organizations: 1Centre for Wireless Communications, University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.5 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2020
Publish Date: 2020-11-30


We propose a distributed precoding design for downlink cell-free massive multiple-input multiple-output (MIMO) systems where the channel state information (CSI) exchange via backhaul signaling is entirely replaced by a novel over-the- air (OTA) signaling mechanism. The proposed method enjoys desirable flexibility and scalability properties, as the amount of OTA signaling does not scale with the number of base stations or user equipments. Numerical results show remarkable gains over uncoordinated precoding design, even after very few iterations. The proposed method may also outperform the centralized precoding design under realistic CSI acquisition.

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Series: SPAWC. Signal processing advances in wireless communications
ISSN: 1948-3244
ISSN-E: 1948-3252
ISSN-L: 1948-3244
ISBN: 978-1-7281-5478-7
ISBN Print: 978-1-7281-5479-4
Pages: 1 - 5
Article number: 9154279
DOI: 10.1109/SPAWC48557.2020.9154279
Host publication: 21st IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2020
Conference: IEEE International Workshop on Signal Processing Advances in Wireless Communications
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
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