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- Kolomvakis, Nikolaos,1985Chalmers tekniska högskola,Chalmers University of Technology (author)
Massive MIMO Systems with IQ Imbalance: Channel Estimation and Sum Rate Limits
- Article/chapterEnglish2017
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- 2017
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- LIBRIS-ID:oai:research.chalmers.se:ff2cb41e-49bc-4467-9486-b0dcbd2bfbd8
- https://research.chalmers.se/publication/248274URI
- https://doi.org/10.1109/TCOMM.2017.2677940DOI
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- Language:English
- Summary in:English
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- This paper studies the impact of in-phase and quadrature imbalance (IQI) on single-cell multiuser multiple-input multiple-output (MU-MIMO) systems with large antenna arrays. Moreover, we consider a time-division duplex (TDD) system where we assume uplink/downlink channel reciprocity in the downlink precoding design. First, we investigate the effect of transceiver IQI on the uplink channel estimation by deriving the linear minimum-mean-square-error (LMMSE) estimator for the IQ-impaired model and prove that only the receiver IQI at the base station (BS) limits the estimation accuracy. Then, we study the impact of uplink/downlink channel mismatch on the downlink rate caused by different IQI on the BS and user equipments (UEs). We prove that the achievable downlink rate of each UE is limited either by the receiver IQI at the UEs or jointly by the transmit and receive IQI at the BS, when there is mismatch between the uplink and downlink channels.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Telekommunikation hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Telecommunications hsv//eng
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Kommunikationssystem hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Communication Systems hsv//eng
- TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Signalbehandling hsv//swe
- ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Signal Processing hsv//eng
- channel estimation
- asymptotic analysis
- I/Q imbalance
- achievable rate
- Massive MIMO
Added entries (persons, corporate bodies, meetings, titles ...)
- Coldrey, Mikael,1972Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mito (author)
- Eriksson, Thomas,1964Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)thomase (author)
- Viberg, Mats,1961Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)viberg (author)
- Chalmers tekniska högskola (creator_code:org_t)
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- In:IEEE Transactions on Communications65:6, s. 2382 - 23960090-67781558-0857
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