Integrated Communications and Localization for Massive MIMO LEO Satellite Systems
Journal article, 2024
Integrated communications and localization (ICAL) will play an important part in future sixth generation (6G) networks for the realization of Internet of Everything (IoE) to support both global communications and seamless localization. Massive multiple-input multiple-output (MIMO) low earth orbit (LEO) satellite systems have great potential in providing wide coverage with enhanced gains, and thus are strong candidates for realizing ubiquitous ICAL. In this paper, we develop a wideband massive MIMO LEO satellite system to simultaneously support wireless communications and localization operations in the downlink. In particular, we first characterize the signal propagation properties and derive a localization performance bound. Based on these analyses, we focus on the hybrid analog/digital precoding design to achieve high communication capability and localization precision. Numerical results demonstrate that the proposed ICAL scheme supports both the wireless communication and localization operations for typical system setups.
hybrid precoding
LEO satellite
Satellite broadcasting
Low earth orbit satellites
Satellites
non-geostationary satellite
massive MIMO
Integrated communications and localization
Precoding
6G
Downlink
Location awareness
squared position error bound
Massive MIMO
Author
Li You
Southeast University
Xiaoyu Qiang
Southeast University
Yongxiang Zhu
Southeast University
Fan Jiang
Peng Cheng Laboratory
Christos G. Tsinos
University of Athens
Wenjin Wang
Southeast University
Henk Wymeersch
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
X. Gao
Southeast University
Björn E. Ottersten
University of Luxembourg
IEEE Transactions on Wireless Communications
15361276 (ISSN) 15582248 (eISSN)
Vol. 23 9 11061-11075Subject Categories
Telecommunications
Communication Systems
Signal Processing
DOI
10.1109/TWC.2024.3378305