@inproceedings{4d5c35ffd7174aac8d9542a94663c1d4,
title = "Antenna calibration method for MMSE-based network MIMO system",
abstract = "In this paper, we propose a new channel reciprocity calibration method based on minimum mean square error (MMSE) in network multiple-input and multiple-output (MIMO) system. Network MIMO system can mitigate the inter-cell interference by joint precoding techniques. The system is assumed to operate in time division duplex (TDD). However, the generalized channeles do not only consist of free-space electromagnetic channel, but also include transceiver modules, the mismatches between the transceiver modules of the antennas destroy the channel reciprocity. Therefore the mismatches should be calibrated before channel reciprocity can be utilized. An effective method for calculating the calibration coefficients in the network MIMO system whose BSs are equipped with multiple antennas is proposed. The network MIMO system is divided into M independent centralized MIMO systems and one distributed MIMO system, then the calibration coefficients of the two systems can be combined to calculate the calibration coefficients of the network MIMO system. The validity of the method is proved by the simulation results.",
keywords = "Network MIMO, TDD, calibration, channel estimation, massive MIMO, reciprocity",
author = "Qiang Liu and Xin Su and Jie Zeng and Lili Liu and Tiejun Lv",
note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 2015 IEEE/CIC International Conference on Communications in China - Workshops, CIC/ICCC 2015 ; Conference date: 02-11-2015 Through 04-11-2015",
year = "2017",
month = jun,
day = "28",
doi = "10.1109/ICCChinaW.2015.7961592",
language = "English",
series = "2015 IEEE/CIC International Conference on Communications in China - Workshops, CIC/ICCC 2015",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "120--125",
booktitle = "2015 IEEE/CIC International Conference on Communications in China - Workshops, CIC/ICCC 2015",
address = "United States",
}