Massive MIMO-Based Localization and Mapping Exploiting Phase Information of Multipath Components

被引:50
作者
Li, Xuhong [1 ]
Leitinger, Erik [2 ]
Oskarsson, Magnus [3 ]
Astrom, Kalle [3 ]
Tufvesson, Fredrik [1 ]
机构
[1] Lund Univ, Dept Elect & Informat Technol, SE-22100 Lund, Sweden
[2] Graz Univ Technol, Signal Proc & Speech Commun Lab, A-8010 Graz, Austria
[3] Lund Univ, Ctr Math Sci, SE-22100 Lund, Sweden
基金
奥地利科学基金会;
关键词
Parametric channel estimation; extended Kalman filter; massive MIMO radio channel; localization and mapping; SELF-CALIBRATION; UWB; 5G; MITIGATION; POSITION; MODEL;
D O I
10.1109/TWC.2019.2922264
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
In this paper, we present a robust multipath-based localization and mapping framework that exploits the phases of specular multipath components (MPCs) using a massive multiple-input multiple-output (MIMO) array at the base station. Utilizing the phase information related to the propagation distances of the MPCs enables the possibility of localization with extraordinary accuracy even with limited bandwidth. The specular MPC parameters along with the parameters of the noise and the dense multipath component (DMC) are tracked using an extended Kalman filter (EKF), which enables to preserve the distance-related phase changes of the MPC complex amplitudes. The DMC comprises all non-resolvable MPCs, which occur due to finite measurement aperture. The estimation of the DMC parameters enhances the estimation quality of the specular MPCs and, therefore, also the quality of localization and mapping. The estimated MPC propagation distances are subsequently used as input to a distance-based localization and mapping algorithm. This algorithm does not need prior knowledge about the surrounding environment and base station position. The performance is demonstrated with real radio-channel measurements using an antenna array with 128 ports at the base station side and a standard cellular signal bandwidth of 40MHz. The results show that the high accuracy localization is possible even with such a low bandwidth.
引用
收藏
页码:4254 / 4267
页数:14
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