Cell-Free Massive MIMO-OFDM Transmission over Frequency-Selective Fading Channels

Wei Jiang, Hans Dieter Schotten

In: IEEE Communications Letters 8 Pages 1-5 IEEE 2021.


This letter presents and analyzes orthogonal frequency-division multiplexing (OFDM)-based multi-carrier transmission for cell-free massive multi-input multi-output (CFmMIMO) over frequency-selective fading channels. Frequency-domain conjugate beamforming, pilot assignment, and user-specific resource allocation are proposed. The CFmMIMO-OFDM system is scalable to serve a massive number of users and is flexible to offer diverse data rates for heterogeneous applications.

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09446530CellFreeMIMOOFDM.pdf (pdf, 645 KB )

German Research Center for Artificial Intelligence
Deutsches Forschungszentrum für Künstliche Intelligenz