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Radar sensors are gradually becoming a wide-spread equipment for road vehicles, playing a crucial role in autonomous driving and road safety. The broad adoption of radar sensors increases the chance of interference among sensors from…

信号处理 · 电气工程与系统科学 2021-11-09 Nicolae-Cătălin Ristea , Andrei Anghel , Radu Tudor Ionescu

Millimeter-wave (mmWave) technology is pivotal for next-generation wireless networks, enabling high-data-rate and low-latency applications such as autonomous vehicles and XR streaming. However, maintaining directional mmWave links in…

信号处理 · 电气工程与系统科学 2024-07-15 Ish Kumar Jain , Suriyaa MM , Dinesh Bharadia

Recently millimeter-wave bands have been postulated as a means to accommodate the foreseen extreme bandwidth demands in vehicular communications, which result from the dissemination of sensory data to nearby vehicles for enhanced…

网络与互联网体系结构 · 计算机科学 2018-12-11 Cristina Perfecto , Javier Del Ser , Mehdi Bennis

Connected and autonomous vehicles will play a pivotal role in future Intelligent Transportation Systems (ITSs) and smart cities, in general. High-speed and low-latency wireless communication links will allow municipalities to warn vehicles…

信息论 · 计算机科学 2017-08-16 Andrea Tassi , Malcolm Egan , Robert J. Piechocki , Andrew Nix

Communicating on millimeter wave (mmWave) bands is ushering in a new epoch of mobile communication which provides the availability of 10 Gbps high data rate transmission. However, mmWave links are easily prone to short transmission range…

信号处理 · 电气工程与系统科学 2022-05-31 Yi Wang , Zhiqing Wei , Zhiyong Feng

Accurately aligning millimeter-wave (mmWave) and terahertz (THz) narrow beams is essential to satisfy reliability and high data rates of 5G and beyond wireless communication systems. However, achieving this objective is difficult,…

信息论 · 计算机科学 2023-08-22 Tawfik Osman , Gouranga Charan , Ahmed Alkhateeb

Millimeter-wave (mmWave) base station can offer abundant high capacity channel resources toward connected vehicles so that quality-of-service (QoS) of them in terms of downlink throughput can be highly improved. The mmWave base station can…

信号处理 · 电气工程与系统科学 2020-01-09 Dohyun Kwon , Joongheon Kim

In the emerging high mobility Vehicle-to-Everything (V2X) communications using millimeter Wave (mmWave) and sub-THz, Multiple-Input Multiple-Output (MIMO) channel estimation is an extremely challenging task. At mmWaves/sub-THz frequencies,…

This paper presents the first large-scale real-world evaluation for using LiDAR data to guide the mmWave beam prediction task. A machine learning (ML) model that leverages the LiDAR sensory data to predict the current and future beams was…

信号处理 · 电气工程与系统科学 2022-03-11 Shuaifeng Jiang , Gouranga Charan , Ahmed Alkhateeb

This paper presents a robust beam alignment technique for millimeter-wave communications in low signal-to-noise ratio (SNR) environments. The core strategy of our technique is to repeatedly transmit the most probable beam candidates to…

信息论 · 计算机科学 2023-12-05 Jihun Park , Yongjeong Oh , Jaewon Yun , Seonjung Kim , Yo-Seb Jeon

Millimeter-wave massive multiple-input multiple-output systems employ highly directional beamforming to overcome severe path loss, and their performance critically depends on accurate beam alignment. Conventional codebook-based methods…

信号处理 · 电气工程与系统科学 2026-02-26 Weijie Jin , Jing Zhang , Hengtao He , Chao-Kai Wen , Xiao Li , Shi Jin

Millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems typically employ hybrid mixed signal processing to avoid expensive hardware and high training overheads. {However, the lack of fully digital beamforming at…

信息论 · 计算机科学 2021-02-23 Asmaa Abdallah , Abdulkadir Celik , Mohammad M. Mansour , Ahmed M. Eltawil

Millimeter-wave (mmWave) radar is widely used in vehicles for applications such as adaptive cruise control and collision avoidance. In this paper, we propose an IEEE 802.11ad-based radar for long-range radar (LRR) applications at the 60 GHz…

信息论 · 计算机科学 2017-02-21 Preeti Kumari , Junil Choi , Nuria Gonzalez-Prelcic , Robert W. Heath

In vehicular networks of the future, sensing and communication functionalities will be intertwined. In this paper, we investigate a radar-assisted predictive beamforming design for vehicle-to-infrastructure (V2I) communication by exploiting…

信号处理 · 电气工程与系统科学 2020-01-28 Fan Liu , Weijie Yuan , Christos Masouros , Jinhong Yuan

In Integrated Sensing and Communication (ISAC) systems, matching the radar targets with communication user equipments (UEs) is functional to several communication tasks, such as proactive handover and beam prediction. In this paper, we…

网络与互联网体系结构 · 计算机科学 2024-09-04 Lorenzo Cazzella , Marouan Mizmizi , Dario Tagliaferri , Damiano Badini , Matteo Matteucci , Umberto Spagnolini

Beam selection for millimeter-wave links in a vehicular scenario is a challenging problem, as an exhaustive search among all candidate beam pairs cannot be assuredly completed within short contact times. We solve this problem via a novel…

In this paper, we propose an efficient beam training technique for millimeter-wave (mmWave) communications. When some mobile users are under high mobility, the beam training should be performed frequently to ensure the accurate acquisition…

信息论 · 计算机科学 2018-10-09 Sun Hong Lim , Jisu Bae , Sunwoo Kim , Byonghyo Shim , Jun Won Choi

802.11p based V2X communication uses stochastic medium access control, which cannot prevent broadcast packet collision, in particular during high channel load. Wireless congestion control has been designed to keep the channel load at an…

网络与互联网体系结构 · 计算机科学 2019-01-28 Mohammad Irfan Khan , François-Xavier Aubet , Marc-Oliver Pahl , Jérôme Härri

Millimeter wave (mmWave) communication is a key component of 5G and beyond. Harvesting the gains of the large bandwidth and low latency at mmWave systems, however, is challenged by the sensitivity of mmWave signals to blockages; a sudden…

机器学习 · 计算机科学 2021-02-09 Shunyao Wu , Muhammad Alrabeiah , Andrew Hredzak , Chaitali Chakrabarti , Ahmed Alkhateeb

Deep reinforcement learning (RL), where the agent learns from mistakes, has been successfully applied to a variety of tasks. With the aim of learning collision-free policies for unmanned vehicles, deep RL has been used for training with…