Ecole d'ingénieur et centre de recherche en Sciences du numérique

How accurately should we calibrate a massive MIMO TDD system?

Jiang, Xiwen; Kaltenberger, Florian; Deneire, Luc

ICC 2016, International Conference on Communications, Workshop, May 23-27, 2016, Kuala Lumpur, Malaysia

We perform an analysis on the accuracy of the channel state information at the transmitter (CSIT) in a Massive MIMO time division duplex (TDD) system. In such a system, channel calibration is needed to compensate the hardware nonsymmetry which breaks the TDD channel reciprocity. We consider the joint impact of calibration coefficients and uplink (UL) CSI on the calibrated downlink (DL) CSI accuracy. Moreover, we show the impact of these factors on both conjugate and zero-forcing (ZF) beamforming performance, which provides a useful tool to determine the accuracy level that TDD calibration coefficients should achieve. In this paper, we aim to answer the question: "How accurately should we calibrate a Massive MIMO TDD system to fully release its potential?"

Document Doi Hal Bibtex

Titre:How accurately should we calibrate a massive MIMO TDD system?
Mots Clés:Massive MIMO, TDD, channel reciprocity, calibration, CSIT accuracy
Type:Conférence
Langue:English
Ville:Kuala Lumpur
Pays:MALAISIE
Date:
Département:Systèmes de Communication
Eurecom ref:4862
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Bibtex: @inproceedings{EURECOM+4862, doi = {http://dx.doi.org/10.1109/ICCW.2016.7503870}, year = {2016}, title = {{H}ow accurately should we calibrate a massive {MIMO} {TDD} system?}, author = {{J}iang, {X}iwen and {K}altenberger, {F}lorian and {D}eneire, {L}uc}, booktitle = {{ICC} 2016, {I}nternational {C}onference on {C}ommunications, {W}orkshop, {M}ay 23-27, 2016, {K}uala {L}umpur, {M}alaysia}, address = {{K}uala {L}umpur, {MALAISIE}}, month = {05}, url = {http://www.eurecom.fr/publication/4862} }
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