Cell-free Massive MIMO with multi-antenna access points and user terminals

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The objective of the paper is to discuss the optimization of cell-free massive MIMO (CF-MaMIMO), in which antennas are distributed among access points (APs) throughout the service area, specifically for the case of multiple antennas at user terminals (UTs). We also focus on millimeter-wave (mmW) systems, where the array gain is important in compensating for the large free space path loss and channels are likely to be relatively sparse. We discuss the importance of channel state information (CSI) at the UTs, and propose an approach using SVD-based precoding with zero-forcing to eliminate inter-user interference. We show that in the case of perfect CSI this approach can asymptotically achieve the single user bound on capacity.

Original languageEnglish
Title of host publicationConference Record of the 54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020
EditorsMichael B. Matthews
PublisherIEEE Computer Society
Pages821-825
Number of pages5
ISBN (Electronic)9780738131269
DOIs
Publication statusPublished - 3 Jun 2021
Event54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020 - Pacific Grove, United States
Duration: 1 Nov 20205 Nov 2020

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393

Conference

Conference54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020
Country/TerritoryUnited States
CityPacific Grove
Period1/11/205/11/20

Keywords

  • cell-free massive MIMO
  • millimeter-waves
  • singular value decomposition
  • sparse channels
  • zero forcing

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