A Lightweight UWB NLOS Detection Algorithm Using Referenced CIR Similarity Metrics

IF 4.6 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

IEEE Wireless Communications Letters Pub Date : 2024-08-20 DOI:10.1109/LWC.2024.3446632

Xu He;Runkun Yang;Lingfei Mo;Xiaolin Meng;Fanxing Yang;Youdong Zhang;Qing Wang

引用次数: 0

Abstract

A lightweight and effective algorithm is benefit for real-world applications and edge devices. This letter presents a lightweight algorithm for Non-Line-of-Sight (NLOS) detection in Ultra-Wideband (UWB) systems, using the referenced Channel Impulse Response (CIR) similarity metrics. It retains essential UWB channel characteristics while incorporating a Radar Cross-Section (RCS)-inspired feature engineering method to capture the effective NLOS representation. It bears novel features to significantly reduce the input data dimensions, model parameters, and Floating-point operations (Flops) by 64.9%, 78.5%, 76.0%, respectively, with comparable performance to the latest State-Of-The-Art (SOTA) solutions. We demonstrate its effectiveness through actual measurements and comparative experiments in mixed complex Line-Of-Sight (LOS)/NLOS dataset, offering a computationally efficient solution for UWB NLOS detection with effective representation.

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使用参考 CIR 相似度指标的轻量级 UWB NLOS 检测算法

轻量级的有效算法有利于实际应用和边缘设备。这封信提出了一种轻量级算法，用于超宽带（UWB）系统中的非视距（NLOS）检测，使用的是参考信道脉冲响应（CIR）相似度指标。它保留了 UWB 信道的基本特征，同时采用受雷达截面（RCS）启发的特征工程方法来捕捉有效的 NLOS 表示。它具有新颖的特征，可大幅减少输入数据维数、模型参数和浮点运算次数（Flops），降幅分别为 64.9%、78.5% 和 76.0%，其性能可与最新的技术水平（SOTA）解决方案媲美。我们通过实际测量和混合复杂视线（LOS）/无视线（NLOS）数据集的对比实验证明了它的有效性，为具有有效代表性的 UWB 无视线（NLOS）检测提供了一种计算效率高的解决方案。

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 Wireless Communications Letters Engineering-Electrical and Electronic Engineering

CiteScore

12.30

自引率

6.30%

发文量

481

期刊介绍： IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. 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 wireless communication systems.