University of Oulu

B. Gouda and A. Tölli, "Distributed Joint Receiver Design for Cell-Free Massive MIMO with Fast Convergence," ICC 2021 - IEEE International Conference on Communications, 2021, pp. 1-6, doi: 10.1109/ICC42927.2021.9501008

Distributed joint receiver design for cell-free massive MIMO with fast convergence

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Author: Gouda, Bikshapathi1; Tölli, Antti1
Organizations: 1Centre for Wireless Communications, University of Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.1 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2021102151897
Language: English
Published: Institute of Electrical and Electronics Engineers, 2021
Publish Date: 2021-10-21
Description:

Abstract

Cell-Free massive MIMO system performance can be improved with cooperative beamforming strategies. Typically, local beamforming strategies are assumed at base stations (BSs) to avoid extensive channel state information exchange via backhaul links. A fully distributed framework relying on a novel over-the-air (OTA) signaling mechanism has been recently proposed to design cooperative beamformers for cell-free massive MIMO systems. However, the existing distributed exact solution has a suboptimal global convergence behaviour because of outdated information used at each BS. This paper proposes a Newton method with an adaptive regularization to design uplink receivers for the fully distributed framework. Numerical results show a significantly faster convergence of the proposed method compared to the distributed exact solution and gradient methods.

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Series: IEEE International Conference on Communications
ISSN: 1550-3607
ISSN-E: 1938-1883
ISSN-L: 1550-3607
ISBN: 978-1-7281-7122-7
ISBN Print: 978-1-7281-7123-4
Pages: 1 - 6
DOI: 10.1109/ICC42927.2021.9501008
OADOI: https://oadoi.org/10.1109/ICC42927.2021.9501008
Host publication: 2021 IEEE International Conference on Communications, ICC 2021
Conference: IEEE International Conference on Communications
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Subjects:
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