Beam Squint-Aware Integrated Sensing and Communications for Hybrid Massive MIMO LEO Satellite Systems

Li You1; Xiaoyu Qiang1; Christos G. Tsinos2; Fan Liu3; Wenjin Wang1; Xiqi Gao1; Björn Ottersten2

2022

10.1109/JSAC.2022.3196114

IEEE Journal on Selected Areas in Communications   Impact Factor & Quartile

1558-0008

1558-0008

The space-air-ground-sea integrated network (SAGSIN) plays an important role in offering global coverage. To improve the efficient utilization of spectral and hardware resources in the SAGSIN, integrated sensing and communications (ISAC) has drawn extensive attention. Most existing ISAC works focus on terrestrial networks and cannot be straightforwardly applied in satellite systems due to the significantly different electromagnetic wave propagation properties. In this work, we investigate the application of ISAC in massive multiple-input multiple-output (MIMO) low earth orbit (LEO) satellite systems. We first characterize the statistical wave propagation properties by considering beam squint effects. Based on this analysis, we propose a beam squint-aware ISAC technique for hybrid analog/digital massive MIMO LEO satellite systems exploiting statistical channel state information. Simulation results demonstrate that the proposed scheme can operate both the wireless communications and the target sensing simultaneously with satisfactory performance, and the beam-squint effects can be efficiently mitigated with the proposed method in typical LEO satellite systems.

Space-air-ground-sea integrated network integrated sensing and communications non-geostationary satellite LEO satellite massive MIMO hybrid precoding beam squint effects energy efficiency

SCI ; EI

English

Others

National Key Research and Development Program of China[2018YFB1801103] ; Jiangsu Province Basic Research Project[BK20192002] ; National Natural Science Foundation of China["62101234","61801114"]

Engineering ; Telecommunications

Engineering, Electrical & Electronic ; Telecommunications

WOS:000854643100018

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

20223412601289

Antenna arrays ; Channel state information ; Communication satellites ; Earth (planet) ; Electromagnetic wave propagation ; Geostationary satellites ; MIMO systems ; Orbits ; Satellite communication systems ; Space applications ; Space-based radar

Energy Conservation:525.2 ; Satellites:655.2 ; Communication Satellites:655.2.1 ; Space Flight:656 ; Electromagnetic Waves:711 ; Radar Systems and Equipment:716.2

COMPUTER SCIENCE

Web of Science

1.Purple Mountain Laboratories, Nanjing, China
2.University of Luxembourg, Luxembourg City, Luxembourg
3.Department of Electronic and Electrical Engineering, Southern University of Science and Technology, Shenzhen, China

Li You,Xiaoyu Qiang,Christos G. Tsinos,et al. Beam Squint-Aware Integrated Sensing and Communications for Hybrid Massive MIMO LEO Satellite Systems[J]. IEEE Journal on Selected Areas in Communications,2022,PP(99):1-1.

Li You.,Xiaoyu Qiang.,Christos G. Tsinos.,Fan Liu.,Wenjin Wang.,...&Björn Ottersten.(2022).Beam Squint-Aware Integrated Sensing and Communications for Hybrid Massive MIMO LEO Satellite Systems.IEEE Journal on Selected Areas in Communications,PP(99),1-1.

Li You,et al."Beam Squint-Aware Integrated Sensing and Communications for Hybrid Massive MIMO LEO Satellite Systems".IEEE Journal on Selected Areas in Communications PP.99(2022):1-1.