Graduate School and Research Center in Digital Sciences

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

Title:How accurately should we calibrate a massive MIMO TDD system?
Keywords:Massive MIMO, TDD, channel reciprocity, calibration, CSIT accuracy
Type:Conference
Language:English
City:Kuala Lumpur
Country:MALAYSIA
Date:
Department:Communication systems
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, {MALAYSIA}}, month = {05}, url = {http://www.eurecom.fr/publication/4862} }
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