How accurately should we calibrate a Massive MIMO TDD system?

被引：0
作者：
Jiang, Xiwen [1 ,2 ]
Kaltenberger, Florian [1 ]
Deneire, Luc [2 ]
机构：
[1] EURECOM, Campus SophiaTech, F-06410 Biot, France
[2] Univ Nice Sophia Antipolis, Lab I3S, UMR7271, F-06903 Sophia Antipolis, France
来源：
2016 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC) | 2016年
关键词：
Massive MIMO; TDD; channel reciprocity; calibration; CSIT accuracy; RECIPROCITY; WIRELESS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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 non-symmetry 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?"
引用
收藏
页码：706 / 711
页数：6
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