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On the MIMO Capacity with Residual Transceiver Hardware Impairments
Chalmers, Dept Signals & Syst, S-41296 Gothenburg, Sweden..
Chalmers, Dept Signals & Syst, S-41296 Gothenburg, Sweden.;Queens Univ Belfast, Sch Elect Elect Engn & Comp Sci, Belfast, Antrim, North Ireland..ORCID iD: 0000-0001-9235-7741
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0002-5954-434X
Ericsson AB, Ericsson Res, Gothenburg, Sweden..
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2014 (English)In: 2014 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC) / [ed] Jamalipour, A Deng, DJ, IEEE , 2014, p. 5299-5305Conference paper, Published paper (Refereed)
Abstract [en]

Radio-frequency (RF) impairments in the transceiver hardware of communication systems (e.g., phase noise (PN), high power amplifier (HPA) nonlinearities, or in-phase/quadrature-phase (I/Q) imbalance) can severely degrade the performance of traditional multiple-input multiple-output (MIMO) systems. Although calibration algorithms can partially compensate these impairments, the remaining distortion still has substantial impact. Despite this, most prior works have not analyzed this type of distortion. In this paper, we investigate the impact of residual transceiver hardware impairments on the MIMO system performance. In particular, we consider a transceiver impairment model, which has been experimentally validated, and derive analytical ergodic capacity expressions for both exact and high signal-to-noise ratios (SNRs). We demonstrate that the capacity saturates in the high-SNR regime, thereby creating a finite capacity ceiling. We also present a linear approximation for the ergodic capacity in the low-SNR regime, and show that impairments have only a second-order impact on the capacity. Furthermore, we analyze the effect of transceiver impairments on large-scale MIMO systems; interestingly, we prove that if one increases the number of antennas at one side only, the capacity behaves similar to the finite-dimensional case. On the contrary, if the number of antennas on both sides increases with a fixed ratio, the capacity ceiling vanishes; thus, impairments cause only a bounded offset in the capacity compared to the ideal transceiver hardware case.

Place, publisher, year, edition, pages
IEEE , 2014. p. 5299-5305
Series
IEEE International Conference on Communications, ISSN 1550-3607
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-243787ISI: 000366666805078ISBN: 978-1-4799-2003-7 (print)OAI: oai:DiVA.org:kth-243787DiVA, id: diva2:1287089
Conference
IEEE International Conference on Communications (ICC), JUN 10-14, 2014, Sydney, AUSTRALIA
Note

QC 20190208

Available from: 2019-02-08 Created: 2019-02-08 Last updated: 2019-08-21Bibliographically approved

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