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Distributed Digital and Hybrid Beamforming Schemes With MMSE-SIC Receivers for the MIMO Interference Channel
Univ Siena, Dipartimento Ingn Informaz, I-53100 Siena, Italy. brardo, Andrea; Moretti, Marco.
KTH, Skolan för elektroteknik och datavetenskap (EECS), Reglerteknik.ORCID-id: 0000-0002-2289-3159
2019 (engelsk)Inngår i: IEEE Transactions on Vehicular Technology, ISSN 0018-9545, E-ISSN 1939-9359, Vol. 68, nr 7, s. 6790-6804Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This paper addresses the problem of weighted sumrate maximization and mean squared error (MSE) minimization for the multiple-input multiple-output (MIMO) interference channel. Specifically, we consider a weighted minimum MSE architecture where each receiver employs successive interference cancellation (SIC) to separate the various received data streams and derive a hybrid beamforming scheme, where the transmitters operate with a number of radio frequency chains smaller than the number of antennas, particularly suited for millimeter-wave channels and 5G applications. To derive our proposed schemes, we first study the relationship between sum-rate maximization and weighted MSE minimization when using SIC receivers, assuming fully digital beamforming. Next, we consider the important-and, as it turns out, highly non-trivial-case where the transmitters employ hybrid digital/analog beamforming, developing a distributed joint hybrid precoding and SIC-based combining algorithm. Moreover, for practical implementation, we propose a signaling scheme that utilizes a common broadcast channel and facilitates the acquisition of channel state information, assuming minimal assistance from a central node such as a cellular base station. Numerical results show that both the proposed weighted MMSE-SIC schemes exhibit great advantages with respect to their linear counterparts in terms of complexity, feedback information, and performance.

sted, utgiver, år, opplag, sider
Institute of Electrical and Electronics Engineers (IEEE), 2019. Vol. 68, nr 7, s. 6790-6804
Emneord [en]
MIMO, weighted MSE minimization, successive interference cancellation, hybrid beamforming
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-255766DOI: 10.1109/TVT.2019.2918066ISI: 000476775000046Scopus ID: 2-s2.0-85069527149OAI: oai:DiVA.org:kth-255766DiVA, id: diva2:1341947
Merknad

QC 20190812

Tilgjengelig fra: 2019-08-12 Laget: 2019-08-12 Sist oppdatert: 2019-08-12bibliografisk kontrollert

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