Scalable Cell-Free Massive MIMO Systems With Hardware Impairments

被引：5

作者：

Papazafeiropoulos, A. K. ^{[1
,3
]}

Bjoernson, Emil ^{[2
]}

Kourtessis, P. ^{[1
]}

Chatzinotas, S. ^{[3
]}

Senior, John M. ^{[1
]}

机构：

[1] Univ Hertfordshire, Commun & Intelligent Syst Res Grp, Hatfield, Herts, England

[2] Linkoping Univ, Dept Elect Engn ISY, S-58183 Linkoping, Sweden

[3] Univ Luxembourg, SnT Securityandtrust Lu, Luxembourg, Luxembourg

来源：

2020 IEEE 31ST ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS (IEEE PIMRC) | 2020年

关键词：

Cell-free massive MIMO systems; user-centric 5G networks; transceiver hardware impairments; MMSE processing; achievable spectral efficiency; WIRELESS; CHANNEL; PERFORMANCE; NETWORKS;

D O I：

10.1109/pimrc48278.2020.9217151

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

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.

引用

页数：7

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