Near-Field Localization With Limited RF Chains: An Array Partitioning Approach

IF 7.1 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Vehicular Technology Pub Date : 2024-09-10 DOI:10.1109/TVT.2024.3457241

Boyu Teng;Xiaojun Yuan;Rui Wang

引用次数: 0

Abstract

Equipping each antenna with an independent radio frequency (RF) chain in extremely large-scale antenna arrays (ELAA) requires unaffordable hardware and power consumptions. Analog beamforming is a common technology to reduce the number of RF chains. However, existing near-field positioning algorithms cannot adapt to analog beamforming, resulting in the algorithm being unusable when the RF chains are limited. This paper addresses the near-field localization problem for a base station (BS) with an ELAA and limited RF chains. Following the array partitioning approach, we divide the subarrays into groups and use a linear function to approximate the angles of arrival (AoA) variation within each group. We propose a message-passing algorithm, called array-partitioning-based location estimation with AoAs block-wise linearization (APLE-ABL), to estimate the user position. The simulation results show the effectiveness of our algorithm.

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有限射频链的近场定位：阵列分割方法

在超大规模天线阵列（ELAA）中为每个天线配备独立的射频（RF）链需要负担不起的硬件和功耗。模拟波束形成是减少射频链数量的常用技术。然而，现有的近场定位算法不能适应模拟波束形成，导致算法在射频链有限的情况下无法使用。本文研究了具有ELAA和有限射频链的基站的近场定位问题。根据阵列划分方法，我们将子阵列划分为组，并使用线性函数来近似每组内的到达角（AoA）变化。我们提出了一种消息传递算法，称为基于数组分区的位置估计与AoAs块线性化（apple - abl），以估计用户的位置。仿真结果表明了算法的有效性。

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 Transactions on Vehicular Technology 工程技术-电信学

CiteScore

6.00

自引率

8.80%

发文量

1245

审稿时长

6.3 months

期刊介绍： The scope of the Transactions is threefold (which was approved by the IEEE Periodicals Committee in 1967) and is published on the journal website as follows: Communications: The use of mobile radio on land, sea, and air, including cellular radio, two-way radio, and one-way radio, with applications to dispatch and control vehicles, mobile radiotelephone, radio paging, and status monitoring and reporting. Related areas include spectrum usage, component radio equipment such as cavities and antennas, compute control for radio systems, digital modulation and transmission techniques, mobile radio circuit design, radio propagation for vehicular communications, effects of ignition noise and radio frequency interference, and consideration of the vehicle as part of the radio operating environment. Transportation Systems: The use of electronic technology for the control of ground transportation systems including, but not limited to, traffic aid systems; traffic control systems; automatic vehicle identification, location, and monitoring systems; automated transport systems, with single and multiple vehicle control; and moving walkways or people-movers. Vehicular Electronics: The use of electronic or electrical components and systems for control, propulsion, or auxiliary functions, including but not limited to, electronic controls for engineer, drive train, convenience, safety, and other vehicle systems; sensors, actuators, and microprocessors for onboard use; electronic fuel control systems; vehicle electrical components and systems collision avoidance systems; electromagnetic compatibility in the vehicle environment; and electric vehicles and controls.