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Proceedings of the 1st ACM MobiCom Workshop on Integrated Sensing and Communications Systems最新文献

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Integrating monostatic sensing with communication for IoT 将单站传感与物联网通信集成
Zhe Chen, Tianyue Zheng, Chao Hu, Hangcheng Cao, Yanbing Yang, Hongbo Jiang, Jun Luo
The intention of leveraging Radio-Frequency (RF) resources for diverse sensing purposes has grown increasingly keen, thanks to the ever-expanding deployment of IoT devices using RF communications to maintain connectivity. To this end, we propose ISACoT as the framework for enabling Integrated Sensing and Communication (ISAC) over IoT devices. ISACoT extends over existing devices via four aspects, namely time, frequency, space, and protocol. We argue that, as the multistatic communication infrastructure of IoT is adverse to device-free sensing (e.g., lack of precise time synchronization), the keystone of ISACoT should be to operate sensing in a monostatic mode (like radar). We tackle the fundamental time aspect based on Wi-Fi first, then explore the other three aspects with both preliminary proposals made and potential challenges raised for future extensions.
由于使用RF通信来保持连接的物联网设备的不断扩展部署,利用射频(RF)资源用于各种传感目的的意图变得越来越强烈。为此,我们提出ISACoT作为在物联网设备上实现集成传感和通信(ISAC)的框架。ISACoT通过时间、频率、空间和协议四个方面对现有设备进行扩展。我们认为,由于物联网的多静态通信基础设施不利于无设备传感(例如,缺乏精确的时间同步),ISACoT的重点应该是在单静态模式(如雷达)下运行传感。我们首先解决基于Wi-Fi的基本时间方面,然后探讨其他三个方面,提出初步建议和未来扩展的潜在挑战。
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引用次数: 2
DOL-net: a decoupled online learning network method for RIS-assisted ISAC waveform design DOL-net: ris辅助ISAC波形设计的解耦在线学习网络方法
Kai Zhong, Jinfeng Hu, Yaya Pei, Cunhua Pan
The constant modulus (CM) waveform design, for Multiple-Input-Multiple-Output (MIMO) Integrated Sensing and Communication (ISAC) systems, is a key technology. The existing methods mainly include waveform design without Reconfigurable Intelligent Surface (RIS) or the sensing-based waveform design with RIS, which usually degrade the comprehensive performance. To address this issue, the comprehensive waveform design with RIS is proposed, where we jointly maximizing the Signal-to-Interference-and-Noise-Ratio (SINR) for radar and minimizing the RIS-aided Multiple User Interference (MUI). Due to the coupling effect between the phase shifts and waveform, the problem is difficult to solve. Additionally, the CM constraint on both the phase shifts and waveform along with the fractional SINR expression further aggravate the difficulty. To address these issues, a Decoupled Online Learning Network (DOL-Net) method is proposed using the characteristic of multiple input to multiple output mapping, which includes trainable network parameters module, loss calculation module and back-propagation module. Given fixed network parameters, the cost function can be calculated in the loss calculation module. Then, the network parameters are trained by the deep learning optimizer to minimize the loss function. Compared with the existing methods, the proposed method obtains 0.69 dB radar SINR enhancement and 138.8 % communication sum rate improvement.
恒模(CM)波形设计是多输入多输出(MIMO)集成传感与通信(ISAC)系统的一项关键技术。现有的波形设计方法主要包括不考虑可重构智能曲面(RIS)的波形设计或采用RIS的基于传感的波形设计,这些方法往往会降低综合性能。为了解决这个问题,我们提出了RIS的综合波形设计,其中我们共同最大化雷达的信噪比(SINR)和最小化RIS辅助的多用户干扰(MUI)。由于相移和波形之间的耦合效应,这个问题很难解决。此外,CM对相移和波形的约束以及分数SINR表达式进一步加剧了难度。为了解决这些问题,利用多输入多输出映射的特性,提出了一种解耦在线学习网络(dolnet)方法,该方法包括可训练网络参数模块、损失计算模块和反向传播模块。给定固定的网络参数,可以在损失计算模块中计算成本函数。然后,通过深度学习优化器训练网络参数以最小化损失函数。与现有方法相比,该方法的雷达信噪比提高了0.69 dB,通信和速率提高了138.8%。
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引用次数: 1
Non-uniform beam pattern modulation for joint sensing and communication in 6G networks 6G网络中联合传感和通信的非均匀波束模式调制
Shuaishuai Guo, Dingyan Cong, Jia Ye, Shuping Dang, N. Saeed
This paper proposes a non-uniform beam pattern modulation (NUBPM) scheme for integrated sensing and communication (ISAC) systems, where the beam pattern indices are adopted to carry additional information, increasing the spectral efficiency. We analyze the sensing performance and spectral efficiency of the proposed NUBPM scheme, which depends on the beam patterns and their activation probabilities. Furthermore, to improve the performance of the NUBPM-enabled ISAC systems, we investigate the beam pattern set design and activation probability optimization. Simulation results show that the proposed scheme considerably outperforms existing ISAC designs in spectral efficiency while keeping the same sensing performance. The gained spectral efficiency through the proposed scheme can also be traded off for novel equilibria between communication and sensing performance for ISAC systems.
提出了一种用于集成传感与通信(ISAC)系统的非均匀波束方向图调制(NUBPM)方案,该方案利用波束方向图指标携带附加信息,提高了频谱效率。我们分析了所提出的NUBPM方案的传感性能和频谱效率,这取决于波束模式及其激活概率。此外,为了提高启用nubpm的ISAC系统的性能,我们研究了波束方向图集设计和激活概率优化。仿真结果表明,该方案在保持传感性能不变的情况下,在频谱效率方面明显优于现有的ISAC设计。通过该方案获得的频谱效率也可以用于ISAC系统的通信和传感性能之间的新平衡。
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引用次数: 5
Computer vision assisted mmWave beamforming for UAV-to-vehicle links 计算机视觉辅助毫米波波束形成的无人机到车辆的链接
Jiaqi Zou, Yuanhao Cui, Z. Zou, Yuyang Liu, Guanyu Zhang, Songlin Sun, W. Yuan
This paper focuses on the beamforming algorithm for UAV-to-vehicle communications. To deal with high communication overhead caused by beam tracking in high mobility communication scenarios, we utilize the inherent vision functionality of UAV platforms and propose a vision-assisted beamforming framework. We propose to use a deep-learning-based network for vehicle detection. Based on the predicted positions of vehicles, we propose a lightweight beamforming algorithm to save beam tracking overhead. Experiments and simulations are implemented on the UAV detection and tracking (UAVDT) dataset, which shows that the proposed algorithm gains a significant performance on received signal-to-interference-plus-noise ratio (SINR).
本文主要研究了无人机对车通信的波束形成算法。为了解决高机动性通信场景下波束跟踪带来的高通信开销,利用无人机平台固有的视觉功能,提出了一种视觉辅助波束形成框架。我们建议使用基于深度学习的网络进行车辆检测。在预测车辆位置的基础上,提出了一种轻型波束形成算法,以节省波束跟踪开销。在无人机检测与跟踪(UAVDT)数据集上进行了实验和仿真,结果表明该算法在接收信噪比(SINR)上取得了显著的性能。
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引用次数: 1
Joint precoding for MIMO radar and URLLC in ISAC systems ISAC系统中MIMO雷达和URLLC的联合预编码
Changfeng Ding, Cheng Zeng, Chuanwen Chang, Jun-Bo Wang, Min Lin
Integrated sensing and communication (ISAC) is an emerging technology for next generation communication networks. In this paper, we propose to design the ISAC system by jointly considering radar sensing and ultra-reliable low-latency communication (URLLC), which needs a joint precoding design for radar and URLLC. Then, we formulate a transmit power minimization problem by jointly considering the performance requirements of radar sensing and latency in URLLC. By using approximation method and quadratic transform based fractional programming method, the optimization problem can be efficiently solved. Simulation results verify that our proposed design can minimize the transmit power consumption while guaranteeing the requirements of radar sensing and URLLC.
集成传感与通信(ISAC)是面向下一代通信网络的新兴技术。本文提出将雷达感知和超可靠低延迟通信(URLLC)结合起来设计ISAC系统,这就需要对雷达和URLLC进行联合预编码设计。然后,综合考虑URLLC中雷达感知的性能要求和时延,提出了发射功率最小化问题。采用近似法和基于二次变换的分式规划方法,有效地解决了优化问题。仿真结果验证了所提出的设计方案在保证雷达传感和URLLC要求的同时,能够最大限度地降低发射功耗。
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引用次数: 0
Wirelessly powered integrated sensing and communication 无线供电集成传感和通信
Xiaoyang Li, Zidong Han, Ziqin Zhou, Qinyu Zhang, Kaibin Huang, Yi Gong
To facilitate the data collection process in 6G radio access network, the advanced integrated sensing and communication (ISAC) technology has been proposed by sharing the radio resource for both data transmission and radar sensing. Despite the promising performance of ISAC, the power supply of million of radar sensors distributed in remote or even dangerous areas has not been resolved yet. To tackle this problem, wireless power transfer (WPT) is expected to enable the wirelessly powered ISAC, where the edge nodes equipped with multiple antennas are powered by the beacon and then perform ISAC. To improve the sensing accuracy while guaranteeing the communication throughput, the power control, WPT energy beamforming, and ISAC beamforming are jointly optimized, which results in a non-convex problem. To derive a practical solution, the semi-definite relaxation together with the properties for achieving the optimum are exploited. Simulations and experiments are further conducted to verify the effectiveness of the proposed design.
为了方便6G无线接入网的数据采集过程,提出了一种先进的集成传感和通信(ISAC)技术,通过共享数据传输和雷达传感的无线电资源。尽管ISAC具有良好的性能,但分布在偏远甚至危险地区的数百万雷达传感器的供电问题尚未得到解决。为了解决这个问题,无线电力传输(WPT)有望启用无线供电的ISAC,其中配备多个天线的边缘节点由信标供电,然后执行ISAC。为了在保证通信吞吐量的同时提高传感精度,对功率控制、WPT能量波束形成和ISAC波束形成进行了联合优化,得到了一个非凸问题。为了得到一个实际的解,利用了半定松弛和达到最优的性质。仿真和实验进一步验证了所提设计的有效性。
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引用次数: 2
Research and verification of sensing information assisted millimeter wave beam tracking algorithm for automated vehicles 传感信息辅助的自动驾驶车辆毫米波波束跟踪算法研究与验证
Qixun Zhang, B. Yu, Zhiyong Feng
In order to solve the problem of mass raw data sharing among automated vehicles, millimeter wave (mmWave) communication is considered as an efficient technology to ensure the communication requirements of low-latency and high data rate between vehicles and roadside facilities. However, in the autonomous driving scenario, a fast and robust beam tracking algorithm is needed to ensure the quality of communication. We propose a sensing information assisted mmWave beam tracking algorithm combining both camera and light detection and ranging (LiDAR). The beam misalignment problem of the camera in the case of insufficient ambient light is solved and the robustness of the beam tracking algorithm is enhanced. The proposed algorithm in this paper is validated by the joint sensing and communication hardware platform in the mmWave frequency band, which can guarantee the high data rate communication performance regardless of sufficient and insufficient ambient light under the mobility scenarios.
为了解决自动驾驶车辆之间的大量原始数据共享问题,毫米波(mmWave)通信被认为是一种高效的技术,可以保证车辆与路边设施之间低延迟、高数据速率的通信需求。然而,在自动驾驶场景中,需要一种快速、鲁棒的波束跟踪算法来保证通信质量。我们提出了一种结合相机和光探测和测距(LiDAR)的传感信息辅助毫米波波束跟踪算法。解决了摄像机在环境光不足情况下的光束不对准问题,增强了光束跟踪算法的鲁棒性。本文提出的算法在毫米波频段的联合传感与通信硬件平台上进行了验证,在移动场景下,无论环境光充足还是不足,都能保证高数据速率的通信性能。
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引用次数: 0
Joint design of hybrid transmitter and receiver in multi-user OFDM dual-function radar-communication system 多用户OFDM双功能雷达通信系统中混合式收发机联合设计
Junjie Zeng, Bin Liao
This paper investigates the design of hybrid beamforming transmitter, radar receiver, and communication receiver in an orthogonal frequency division multiplexing (OFDM) dual-function radar-communication (DFRC) system. Specifically, we formulate the joint design problem as optimizing the spectrum efficiency (SE) of communication and the signal-to-interference noise ratio (SINR) of radar sensing. Due to the coupling between the digital and analog beamformers in the hybrid beamforming structure, the resultant problem is NP-hard. Towards this end, a consensus alternating direction method of multipliers (CADMM) approach is developed, by decoupling the digital precoder and the analog precoder with auxiliary variables. In each iteration, the digital precoder can be analytically obtained, while the analog precoder is designed via a phase-only beamforming method. Both the communication and radar receivers are optimized through the generalized eigenvalue decomposition. Numerical simulations are provided to demonstrate the effectiveness of the proposed design approach.
本文研究了正交频分复用(OFDM)双功能雷达通信(DFRC)系统中混合波束形成发射机、雷达接收机和通信接收机的设计。具体来说,我们将联合设计问题表述为优化通信的频谱效率(SE)和雷达传感的信噪比(SINR)。在混合波束形成结构中,由于数字波束形成器和模拟波束形成器之间的耦合,产生了np困难问题。为此,通过将数字预编码器和模拟预编码器与辅助变量解耦,提出了一种乘法器一致交替方向法(CADMM)。在每次迭代中,可以解析得到数字预编码器,而模拟预编码器则采用纯相位波束形成方法设计。通过广义特征值分解对通信接收机和雷达接收机进行优化。数值模拟结果验证了所提设计方法的有效性。
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引用次数: 0
Proof of concept experiments of joint waveform design for integrated sensing and communications 集成传感与通信联合波形设计的概念验证实验
T. Xu, F. Liu, C. Masouros, I. Darwazeh
We design and test over-the-air for the first time, a joint dual-functional radar communication waveform for an integrated radar sensing and multi-user multiple input multiple output (MIMO) based orthogonal frequency division multiplexing (OFDM) communication system. Unlike existing work, the prototyping testbed in this paper can realize radar sensing and communication using the same time, frequency and spatial resources. The designed dual-functional integrated sensing and communication (ISAC) waveform in this work can be easily incorporated into existing communication standards where OFDM is used. The experiment observes a graceful trade-off between radar sensing and communication after comprehensive measurement on communication constellation diagrams and radar beampattern quality. This experiment also reveals the mutual impacts between communication signals using different modulation schemes and radar beampattern performance.
我们首次设计并测试了一种联合双功能雷达通信波形,用于集成雷达传感和基于多用户多输入多输出(MIMO)的正交频分复用(OFDM)通信系统。与现有工作不同,本文的原型试验台可以利用相同的时间、频率和空间资源实现雷达传感和通信。在这项工作中设计的双功能集成传感和通信(ISAC)波形可以很容易地集成到使用OFDM的现有通信标准中。实验通过对通信星座图和雷达波束图质量的综合测量,实现了雷达感知与通信的良好权衡。实验还揭示了不同调制方式下通信信号之间的相互影响和雷达波束图性能的变化。
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引用次数: 0
An efficient cross-domain device-free gesture recognition method for ISAC with federated transfer learning 基于联邦迁移学习的ISAC跨域无设备手势识别方法
Wanbin Qi, Yanxi Xie, Hao Zhang, Jiaen Zhou, Ronghui Zhang, Xiaojun Jing
Emerging device-free sensing technologies and applications promote the development of indoor ubiquitous sensing. Device-free sensing with machine learning mechanisms enable detection, recognition automatically, without required explicit programming. Because of concern of indoor sensing privacy and ubiquitous sensing ability, it is really necessary to conduct an in-depth survey on device-free sensing security training and cross-domain sensing issues. Existing surveys have two important problems: weak robustness and low efficiency. To address them, this article put forward to learn domain independent features, model training and inference localization based on federated transfer learning. Moreover, several efficient methods are proposed to provide a distributed edge device-free sensing mechanism with sensing data privacy protection, low time cost, communication, computing and energy resources. We implement the proposed mechanism and carry out experiments with Widar3.0 datasets to evaluate its performance. The results demonstrate that our mechanism performs better for cross-domain device-free sensing while preserving user data privacy and saving resources.
新兴的无设备传感技术和应用推动了室内泛在传感的发展。无设备传感与机器学习机制,使检测,识别自动,不需要明确的编程。由于室内传感私密性和无所不在的传感能力等问题,有必要对无设备传感安全培训和跨域传感问题进行深入研究。现有的调查存在两个重要问题:鲁棒性弱和效率低。针对这些问题,本文提出了基于联邦迁移学习的领域独立特征学习、模型训练和推理定位。此外,提出了几种有效的方法来提供一种具有传感数据隐私保护、低时间成本、通信、计算和能源的分布式边缘无设备传感机制。我们实现了所提出的机制,并在Widar3.0数据集上进行了实验来评估其性能。结果表明,该机制在保护用户数据隐私和节省资源的同时,能够更好地实现跨域无设备感知。
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引用次数: 0
期刊
Proceedings of the 1st ACM MobiCom Workshop on Integrated Sensing and Communications Systems
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