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MMSE Receiver Design and SINR Calculation in MU-MIMO Systems With Imperfect CSI
Univ Siena, Dipartimento Ingn Informaz, I-53100 Siena, Italy..
KTH, School of Electrical Engineering and Computer Science (EECS), Automatic Control.ORCID iD: 0000-0002-2289-3159
Univ Pisa, Dipartimento Ingn Informaz, I-50126 Pisa, Italy..
Budapest Univ Technol & Econ, Dept Networked Syst & Serv, H-1117 Budapest, Hungary.;MTA BME Informat Syst Res Grp, H-1117 Budapest, Hungary..
2019 (English)In: IEEE Wireless Communications Letters, ISSN 2162-2337, E-ISSN 2162-2345, Vol. 8, no 1, p. 269-272Article in journal (Refereed) Published
Abstract [en]

The performance of the uplink of multiuser multiple input multiple output systems depends critically on the receiver architecture and on the quality of the acquired channel state information. A popular approach is to design linear receivers that minimize the mean squared error (MSE) of the received data symbols. Unfortunately, most of the literature does not take into account the presence of channel state information errors in the MSE minimization. In this letter we develop a linear minimum MSE (MMSE) receiver that employs the noisy instantaneous channel estimates to minimize the MSE, and highlight the dependence of the receiver performance on the pilot-to-data power ratio. By invoking the theory of random matrices, we calculate the users' signal-to-interference-plus-noise ratio as a function of the number of antennas and the pilot-to-data power ratio of all users. Numerical results indicate that this new linear receiver outperforms the classical mismatched MMSE receiver.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2019. Vol. 8, no 1, p. 269-272
Keywords [en]
MIMO, channel state information, estimation error, mean square error methods
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-245929DOI: 10.1109/LWC.2018.2869763ISI: 000459510200067Scopus ID: 2-s2.0-85053318281OAI: oai:DiVA.org:kth-245929DiVA, id: diva2:1295531
Note

QC 20190312

Available from: 2019-03-12 Created: 2019-03-12 Last updated: 2019-03-12Bibliographically approved

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Fodor, Gabor

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