Scalable cell-free massive MIMO systems with hardware impairments

Papazafeiropoulos, A. K., Bjornson, Emil, Kourtessis, P., Chatzinotas, S. and Senior, John M. (2020) Scalable cell-free massive MIMO systems with hardware impairments. In: 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications :. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC . Institute of Electrical and Electronics Engineers (IEEE), GBR. ISBN 9781728144917

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Despite the deleterious effect of hardware impairments (HWIs) on wireless systems, most prior works in cell-free (CF) massive multiple-input-multiple-output (mMIMO) systems have not accounted for their impact. In particular, the effect of phase noise (PN) has not been investigated at all in CF systems. Moreover, there is no work investigating HWIs in scalable CF (SCF) mMIMO systems, encountering the prohibitively demanding fronthaul requirements of large networks with many users. Hence, we derive the uplink spectral efficiency (SE) under HWIs with minimum mean-squared error (MMSE) combining in closed-form by means of the deterministic equivalent (DE) analysis. Notably, previous works, accounted for MMSE decoding, studied the corresponding SE only by means of simulations. Numerical results illustrate the performance loss due to HWIs and result in insightful conclusions.

Item Type	Book Section
Additional information	© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. This is the accepted manuscript version of a conference paper which has been published in final form at https://doi.org/10.1109/PIMRC48278.2020.9217151
Keywords	achievable spectral efficiency, cell-free massive mimo systems, mmse processing, transceiver hardware impairments, user-centric 5g networks, electrical and electronic engineering
Date Deposited	15 May 2025 16:45
Last Modified	30 May 2025 23:18

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