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Integrated Communications and Localization for Massive MIMO LEO Satellite Systems | IEEE Journals & Magazine | IEEE Xplore

Integrated Communications and Localization for Massive MIMO LEO Satellite Systems


Abstract:

Integrated communications and localization (ICAL) will play an important part in future sixth generation (6G) networks for the realization of Internet of Everything (IoE)...Show More

Abstract:

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.
Published in: IEEE Transactions on Wireless Communications ( Volume: 23, Issue: 9, September 2024)
Page(s): 11061 - 11075
Date of Publication: 25 March 2024

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I. Introduction

Fifth generation (5G) wireless networks are under deployment and the basic functionalities and capabilities are defined within the 5G standard [2]. However, there still exist many requirements that 5G networks may not satisfy, and sixth generation (6G) wireless networks are envisioned to offer seamless and ubiquitous coverage, higher communication capability and sensing/localization precision, and enhanced intelligence and security level, etc., [2], [3], [4], [5], and [6]. One of the potential application scenarios of 6G networks is the integrated communications and localization (ICAL) on Internet of Everything (IoE), including tracking of persons or robots in an industrial site, autonomous driving, emergency response, etc. In such use cases, communications and localization are simultaneously performed by jointly designing the signal waveform for shared spectrum on one hardware platform, to improve the utilization of resources [2], [5].

References

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