Robust Precoding for Massive MIMO LEO Satellite Integrated Communication and Localization Systems

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2024-11-01 DOI:10.1109/LCOMM.2024.3489675

Yongxiang Zhu;Li You;Huibin Zhou;Zhenzhou Jin;Qingfu Kong;Xiqi Gao

引用次数: 0

Abstract

Low earth orbit (LEO) satellite networks combined with massive multiple-input multiple-output (MIMO) are expected to support ubiquitous integrated communication and localization (ICAL) with enhanced gains. Ensuring robust localization performance with prior angle uncertainty for the target is essential for ICAL systems. In this letter, we present a robust precoding framework to tackle this issue. We first derive the energy efficiency for communication and the worst-case Cramér-Rao bound (CRB) for localization. Subsequently, we develop a multi-objective framework aimed at simultaneously operating communication and localization for massive MIMO LEO satellite systems. Simulation results illustrate that the proposed scheme can attain satisfactory target angle estimation performance with prior angle uncertainty while guaranteeing the performance of communication.

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大规模MIMO LEO卫星综合通信与定位系统的鲁棒预编码

结合大规模多输入多输出（MIMO）的低地球轨道（LEO）卫星网络有望以增强的增益支持无处不在的集成通信和定位（ICAL）。在目标先验角度不确定的情况下保证鲁棒的定位性能是ICAL系统的关键。在这封信中，我们提出了一个强大的预编码框架来解决这个问题。我们首先推导了通信的能量效率和定位的最坏情况cram r- rao界（CRB）。随后，我们开发了一个多目标框架，旨在同时运行大规模MIMO LEO卫星系统的通信和定位。仿真结果表明，该方案在保证通信性能的前提下，能够在具有先验角度不确定性的情况下获得满意的目标角度估计性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.