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ZSM-Based E2E Security Slice Management for DDoS Attack Protection in MEC-Enabled V2X Environments 基于 ZSM 的 E2E 安全片管理,在支持 MEC 的 V2X 环境中保护 DDoS 攻击
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-11 DOI: 10.1109/OJVT.2024.3375448
Rodrigo Asensio-Garriga;Pol Alemany;Alejandro M. Zarca;Roshan Sedar;Charalampos Kalalas;Jordi Ortiz;Ricard Vilalta;Raul Muñoz;Antonio Skarmeta
Research on vehicle-to-everything (V2X) is attracting significant attention nowadays, driven by the recent advances in beyond-5G (B5G) networks and the multi-access edge computing (MEC) paradigm. However, the inherent heterogeneity of B5G combined with the security vulnerabilities of MEC infrastructure in dynamic V2X scenarios introduces unprecedented challenges. Efficient resource and security management in multi-domain V2X environments is vital, especially with the growing threat of distributed denial-of-service (DDoS) attacks against critical V2X services within MEC. Our approach employs the zero-touch network and service management (ZSM) standard, integrating autonomous security into end-to-end (E2E) slicing management. We consider an entire 5G network, including vehicular user equipment, radio access networks, MEC, and core components, in the presence of DDoS targeting V2X services. Our framework complies with security service-level agreements (SSLAs) and policies, autonomously deploying and interconnecting security sub-slices across domains. Security requirements are continuously monitored and, upon DDoS detection, our framework reacts with a coordinated E2E strategy. The strategy mitigates DDoS at the MEC and deploys countermeasures in neighboring domains. Performance assessment reveals effective DDoS detection and mitigation with low latency, aligned with the mission-critical nature of certain V2X services. This work is part of ETSI ZSM PoC “security SLA assurance in 5G network slices”.
如今,在 5G 以外(B5G)网络和多接入边缘计算(MEC)范例的最新进展的推动下,有关车对物(V2X)的研究备受关注。然而,B5G 固有的异构性与动态 V2X 场景中 MEC 基础设施的安全漏洞相结合,带来了前所未有的挑战。多域 V2X 环境中的高效资源和安全管理至关重要,尤其是在 MEC 中的关键 V2X 服务受到分布式拒绝服务 (DDoS) 攻击的威胁日益严重的情况下。我们的方法采用了零接触网络和服务管理(ZSM)标准,将自主安全集成到端到端(E2E)切片管理中。我们考虑了整个 5G 网络,包括车辆用户设备、无线接入网络、MEC 和核心组件,以及针对 V2X 服务的 DDoS。我们的框架符合安全服务级别协议(SSLA)和策略,可跨域自主部署和互联安全子切片。我们会持续监控安全要求,一旦检测到 DDoS,我们的框架就会通过协调的 E2E 策略做出反应。该策略可减轻 MEC 的 DDoS,并在邻域部署应对措施。性能评估显示,DDoS 检测和缓解效果显著,延迟时间短,符合某些 V2X 服务的关键任务性质。这项工作是 ETSI ZSM PoC "5G 网络切片中的安全 SLA 保证 "的一部分。
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引用次数: 0
Realistic Channel and Delay Coefficient Generation for Dual Mobile Space-Ground Links: A Tutorial 双移动空地链路的真实信道和延迟系数生成--教程
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-09 DOI: 10.1109/OJVT.2024.3399072
Hongzhao Zheng;Mohamed Atia;Halim Yanikomeroglu
Channel and delay coefficient are two essential parameters for the characterization of a multipath propagation environment. It is crucial to generate realistic channel and delay coefficient in order to study the channel characteristics that involves signals propagating through environments with severe multipath effects. While many deterministic channel models, such as ray-tracing (RT), face challenges like high computational complexity, data requirements for geometrical information, and inapplicability for space-ground links, and nongeometry-based stochastic channel models (NGSCMs) might lack spatial consistency and offer lower accuracy, we present a scalable tutorial for the channel modeling of dual mobile space-ground links in urban areas, utilizing the Quasi Deterministic Radio Channel Generator (QuaDRiGa), which adopts a geometry-based stochastic channel model (GSCM), in conjunction with an International Telecommunication Union (ITU) provided state duration model. This tutorial allows for the generation of realistic channel and delay coefficients in a multipath environment for dual mobile space-ground links. We validate the accuracy of the work by analyzing the generated channel and delay coefficient from several aspects, such as received signal power and amplitude, multipath delay distribution, delay spread and Doppler spectrum.
信道和延迟系数是描述多径传播环境的两个基本参数。为了研究信号在具有严重多径效应的环境中传播时的信道特性,生成真实的信道和延迟系数至关重要。许多确定性信道模型,如射线追踪(RT),面临着计算复杂度高、几何信息数据要求高、不适用于空地链路等挑战,而基于非几何的随机信道模型(NGSCM)可能缺乏空间一致性,精度较低、我们将利用准确定性无线电信道发生器(QuaDRiGa),结合国际电信联盟(ITU)提供的状态持续时间模型,为城市地区双移动空地链路的信道建模提供一个可扩展的教程。该教程可在多径环境中为双移动空地链路生成真实的信道和延迟系数。我们从接收信号功率和振幅、多径延迟分布、延迟扩散和多普勒频谱等几个方面分析了生成的信道和延迟系数,从而验证了这项工作的准确性。
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引用次数: 0
Inter-User Interference Cancellation Scheme for 5G-Based Dynamic Full-Duplex Cellular System 基于 5G 的动态全双工蜂窝系统的用户间干扰消除方案
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-08 DOI: 10.1109/OJVT.2024.3398566
Shota Mori;Keiichi Mizutani;Hiroshi Harada
Improving spectral efficiency is an important issue for the next generation of the 5th generation mobile communication (5G) systems. Full-duplex cellular (FDC) and dynamic-FDC (DDC) systems based on the 5G signal format (5G-FDC and 5G-DDC) have gained substantial attention for introducing in-band full-duplex (IBFD) into 5G. However, self-interference (SI) at a base station (BS) and inter-user interference (IUI) in user equipment (UE) are significant hurdles in implementing FDC and DDC systems. This study proposes an IUI cancellation (IUIC) scheme based on successive interference cancellation tailored to the signal configuration and channel coding of 5G. Additionally, we introduce user scheduling and adaptive modulation algorithms for 5G-DDC. We evaluate the proposed schemes using link- and system-level simulations. The results demonstrate a remarkable 40 dB reduction in IUI with a 3.4 dB decline in reception quality. Furthermore, our IUIC method reduces the IUI of close-distance UE pairs, expands the candidate UE pairs for IBFD operation, and significantly enhances the IBFD application ratio in the downlink slot by 51.0% compared to conventional 5G-DDC. Moreover, the gain of the uplink average throughput increases by 11.4% when the BS and UE transmission powers are at their maximum.
提高频谱效率是下一代第五代移动通信(5G)系统的一个重要问题。基于 5G 信号格式的全双工蜂窝(FDC)和动态全双工(DDC)系统(5G-FDC 和 5G-DDC)因将带内全双工(IBFD)引入 5G 而备受关注。然而,基站(BS)的自干扰(SI)和用户设备(UE)的用户间干扰(IUI)是实现 FDC 和 DDC 系统的重大障碍。本研究针对 5G 的信号配置和信道编码,提出了一种基于连续干扰消除的 IUI 消除(IUIC)方案。此外,我们还为 5G-DDC 引入了用户调度和自适应调制算法。我们利用链路和系统级仿真对所提出的方案进行了评估。结果表明,在接收质量下降 3.4 dB 的情况下,IUI 明显降低了 40 dB。此外,与传统 5G-DDC 相比,我们的 IUIC 方法降低了近距离 UE 对的 IUI,扩大了 IBFD 操作的候选 UE 对,并将下行链路时隙中的 IBFD 应用率显著提高了 51.0%。此外,当 BS 和 UE 发射功率达到最大值时,上行链路平均吞吐量增益增加了 11.4%。
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引用次数: 0
On the Performance of Interference-Based Energy-Harvesting-Enabled Wireless AF Relaying Communication Systems 论基于干扰的能量收集无线 AF 中继通信系统的性能
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-05 DOI: 10.1109/OJVT.2024.3373721
Yazid M. Khattabi;Yazan H. Al-Badarneh;Mohamed-Slim Alouini
This article considers an interference-based radio-frequency energy harvesting (RF-EH)-empowered wireless dual-hop amplify-and-forward relaying system in which an ambient interferer is beneficially utilized as the solely free power source for EH and detrimentally considered as the dominant factor that corrupts its receivers. Three EH modes are considered and analyzed separately. In mode I, energy is harvested only by the source; in mode II, energy is harvested only by the relay; and in mode III, energy is harvested concurrently by both the source and relay. Under these modes, exact and approximate analytical expressions are derived for the system's outage probability, which are directly used to determine the system's delay-limited throughput as a performance figure of merit. Thorough numerical and simulation results are presented to verify the analytical work and to demonstrate the system's throughput performance under different system and channel parameters. For example, results reveal that for given channel conditions, increasing the interferer's power reduces the throughput in case of modes I and II, and has no effect on it in case of mode III. Also, for given interferer's power, improving the channel conditions between the interferer and a harvesting node, improves the throughput, while improving them between the interferer and a receiving node, degrades the throughput.
本文探讨了一种基于干扰的射频能量收集(RF-EH)供电无线双跳放大和前向中继系统,在该系统中,环境干扰器被用作 EH 的唯一免费电源,并被视为干扰其接收器的不利因素。本文考虑并分别分析了三种 EH 模式。在模式 I 中,能量仅由信号源采集;在模式 II 中,能量仅由中继器采集;在模式 III 中,能量由信号源和中继器同时采集。在这些模式下,得出了系统中断概率的精确和近似分析表达式,这些表达式可直接用于确定系统的延迟限制吞吐量,作为性能参数。为了验证分析结果,并证明系统在不同系统和信道参数下的吞吐量性能,我们给出了详尽的数值和仿真结果。例如,结果显示,在给定信道条件下,增加干扰功率会降低模式 I 和模式 II 的吞吐量,而对模式 III 则没有影响。此外,在给定干扰功率的情况下,改善干扰器与收获节点之间的信道条件可提高吞吐量,而改善干扰器与接收节点之间的信道条件则会降低吞吐量。
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引用次数: 0
Combining Software-Defined and Delay-Tolerant Networking Concepts With Deep Reinforcement Learning Technology to Enhance Vehicular Networks 将软件定义和容错网络概念与深度强化学习技术相结合,增强车载网络功能
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-03-03 DOI: 10.1109/OJVT.2024.3396637
Olivia Nakayima;Mostafa I. Soliman;Kazunori Ueda;Samir A. Elsagheer Mohamed
Ensuring reliable data transmission in all Vehicular Ad-hoc Network (VANET) segments is paramount in modern vehicular communications. Vehicular operations face unpredictable network conditions which affect routing protocol adaptiveness. Several solutions have addressed those challenges, but each has noted shortcomings. This work proposes a centralised-controller multi-agent (CCMA) algorithm based on Software-Defined Networking (SDN) and Delay-Tolerant Networking (DTN) principles, to enhance VANET performance using Reinforcement Learning (RL). This algorithm is trained and validated with a simulation environment modelling the network nodes, routing protocols and buffer schedules. It optimally deploys DTN routing protocols (Spray and Wait, Epidemic, and PRoPHETv2) and buffer schedules (Random, Defer, Earliest Deadline First, First In First Out, Large/smallest bundle first) based on network state information (that is; traffic pattern, buffer size variance, node and link uptime, bundle Time To Live (TTL), link loss and capacity). These are implemented in three environment types; Advanced Technological Regions, Limited Resource Regions and Opportunistic Communication Regions. The study assesses the performance of the multi-protocol approach using metrics: TTL, buffer management,link quality, delivery ratio, Latency and overhead scores for optimal network performance. Comparative analysis with single-protocol VANETs (simulated using the Opportunistic Network Environment (ONE)), demonstrate an improved performance of the proposed algorithm in all VANET scenarios.
在现代车载通信中,确保所有车载 Ad-hoc 网络(VANET)段的数据传输可靠至关重要。车辆运行面临着不可预测的网络条件,这影响了路由协议的适应性。有几种解决方案可以应对这些挑战,但每种解决方案都有明显的不足之处。这项工作提出了一种基于软件定义网络(SDN)和延迟容忍网络(DTN)原理的集中控制多代理(CCMA)算法,利用强化学习(RL)提高 VANET 性能。该算法通过模拟网络节点、路由协议和缓冲调度的仿真环境进行训练和验证。它根据网络状态信息(即流量模式、缓冲区大小差异、节点和链路正常运行时间、缓冲区存活时间(TTL)、链路损耗和容量),优化部署 DTN 路由协议(喷洒和等待、流行和 PRoPHETv2)和缓冲区计划(随机、延迟、最早截止时间优先、先进先出、大/小捆绑优先)。这些在三种环境类型中实施:先进技术区域、资源有限区域和机会通信区域。研究使用以下指标评估多协议方法的性能:TTL、缓冲区管理、链路质量、传送率、延迟和开销分数,以实现最佳网络性能。与单协议 VANET(使用机会主义网络环境 (ONE) 模拟)的比较分析表明,在所有 VANET 场景中,拟议算法的性能都有所提高。
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引用次数: 0
Advanced Learning Technologies for Intelligent Transportation Systems: Prospects and Challenges 智能交通系统的先进学习技术:前景与挑战
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-02-26 DOI: 10.1109/OJVT.2024.3369691
Ruhul Amin Khalil;Ziad Safelnasr;Naod Yemane;Mebruk Kedir;Atawulrahman Shafiqurrahman;NASIR SAEED
Intelligent Transportation Systems (ITS) operate within a highly intricate and dynamic environment characterized by complex spatial and temporal dynamics at various scales, further compounded by fluctuating conditions influenced by external factors such as social events, holidays, and weather. Navigating the intricacies of modeling the intricate interaction among these elements, creating universal representations, and employing them to address transportation issues. Yet, these intricacies comprise just one facet of the multifaceted trials confronting contemporary ITS. This paper offers an all-encompassing survey exploring Deep learning (DL) utilization in ITS, primarily focusing on practitioners' methodologies to address these multifaceted challenges. The emphasis lies on the architectural and problem-specific factors that guide the formulation of innovative solutions. In addition to shedding light on the state-of-the-art DL algorithms, we also explore potential applications of DL and large language models (LLMs) in ITS, including traffic flow prediction, vehicle detection and classification, road condition monitoring, traffic sign recognition, and autonomous vehicles. Besides, we identify several future challenges and research directions that can push the boundaries of ITS, including the critical aspects, including transfer learning, hybrid models, privacy and security, and ultra-reliable low-latency communication. Our aim for this survey is to bridge the gap between the burgeoning DL and transportation communities. By doing so, we aim to facilitate a deeper comprehension of the challenges and possibilities within this field. We hope that this effort will inspire further exploration of fresh perspectives and issues, which, in turn, will play a pivotal role in shaping the future of transportation systems.
智能交通系统(ITS)是在一个高度复杂多变的环境中运行的,其特点是在不同尺度上具有复杂的空间和时间动态变化,同时还受到社会事件、节假日和天气等外部因素的影响而不断变化。如何对这些因素之间错综复杂的互动关系进行建模、创建通用表征并将其用于解决交通问题,是一项复杂的工作。然而,这些错综复杂的问题只是当代智能交通系统所面临的多方面考验的一个方面。本文对深度学习(DL)在智能交通系统中的应用进行了全方位的调查,主要侧重于从业人员应对这些多方面挑战的方法。重点在于指导制定创新解决方案的架构和特定问题因素。除了阐明最先进的深度学习算法,我们还探讨了深度学习和大型语言模型(LLM)在智能交通系统中的潜在应用,包括交通流量预测、车辆检测和分类、道路状况监测、交通标志识别和自动驾驶汽车。此外,我们还确定了可推动智能交通系统发展的若干未来挑战和研究方向,包括迁移学习、混合模型、隐私和安全以及超可靠低延迟通信等关键方面。我们开展这项调查的目的,是在蓬勃发展的数字语言和交通领域之间架起一座桥梁。通过这样做,我们希望促进对这一领域的挑战和可能性有更深入的理解。我们希望这一努力能激发对新观点和新问题的进一步探索,进而在塑造未来交通系统的过程中发挥关键作用。
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引用次数: 0
Scalable Reinforcement Learning Framework for Traffic Signal Control Under Communication Delays 通信延迟条件下交通信号控制的可扩展强化学习框架
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-02-22 DOI: 10.1109/OJVT.2024.3368693
Aoyu Pang;Maonan Wang;Yirong Chen;Man-On Pun;Michael Lepech
Vehicle-to-everything (V2X) technology is pivotal for enhancing road safety, traffic efficiency, and energy conservation through the communication of vehicles with their surrounding entities such as other vehicles, pedestrians, roadside infrastructure, and networks. Among these, traffic signal control (TSC) plays a significant role in roadside infrastructure for V2X. However, most existing works on TSC design assume that real-time traffic flow information is accessible, which does not hold in real-world deployment. This study proposes a two-stage framework to address this issue. In the first stage, a scene prediction module and a scene context encoder are utilized to process historical and current traffic data to generate preliminary traffic signal actions. In the second stage, an action refinement module, informed by human-defined traffic rules and real-time traffic metrics, adjusts the preliminary actions to account for the latency in observations. This modular design allows device deployment with varying computational resources while facilitating system customization, ensuring both adaptability and scalability, particularly in edge-computing environments. Through extensive simulations on the SUMO platform, the proposed framework demonstrates robustness and superior performance in diverse traffic scenarios under varying communication delays. The related code is available at https://github.com/Traffic-Alpha/TSC-DelayLight.
通过车辆与周围实体(如其他车辆、行人、路边基础设施和网络)的通信,车对物(V2X)技术在提高道路安全、交通效率和节能方面发挥着关键作用。其中,交通信号控制(TSC)在 V2X 的路边基础设施中发挥着重要作用。然而,大多数现有的交通信号控制设计工作都假定可以获得实时交通流信息,这在实际部署中并不成立。本研究提出了一个两阶段框架来解决这一问题。在第一阶段,利用场景预测模块和场景上下文编码器处理历史和当前交通数据,生成初步的交通信号行动。在第二阶段,行动改进模块根据人类定义的交通规则和实时交通指标,调整初步行动,以考虑到观察中的延迟。这种模块化设计允许利用不同的计算资源部署设备,同时便于系统定制,确保了适应性和可扩展性,特别是在边缘计算环境中。通过在 SUMO 平台上进行大量仿真,所提出的框架在不同通信延迟条件下的各种流量场景中都表现出了稳健性和卓越的性能。相关代码见 https://github.com/Traffic-Alpha/TSC-DelayLight。
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引用次数: 0
Towards 6G V2X Sidelink: Survey of Resource Allocation—Mathematical Formulations, Challenges, and Proposed Solutions 迈向 6G V2X Sidelink:资源分配调查--数学公式、挑战和拟议解决方案
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-02-21 DOI: 10.1109/OJVT.2024.3368240
Annu;P. Rajalakshmi
The advent of 6G marks a transformative phase in wireless communication, ushering in a hyperconnected experience. This paper explores optimizing sidelink technologies in Vehicle-to-Everything (V2X) communication through integrating 6G capabilities. Emphasizing challenges in sidelink resource allocation, the study introduces mathematical solutions. The survey further investigates the evolution of Cellular-V2X (C-V2X) and sidelink standardization within the 6G V2X Sidelink context, highlighting key features and applications. Additionally, it examines inter-UE coordination, resource re-evaluation, and pre-emption operations in 5G-V2X Sidelink, addressing associated challenges and mathematical formulations. The paper focuses on power-based resource allocation in 5G-V2X, addressing challenges and proposing solutions for the 6G V2X Sidelink landscape. Encompassing direct communication, collision issues, spectrum compliance, resource fairness, uncertainty, and interference management, the survey comprehensively explores challenges and solutions in current sidelink resource allocation. It evaluates traditional and emerging techniques, such as cognitive radio, cooperative communication, power control, dynamic spectrum access, ML-aided allocation, blockchain-enabled allocation, and edge computing-driven allocation. The resource allocation requirements for diverse V2X services in 6G V2X Sidelink are outlined, explicitly focusing on Vehicular to Vehicular (V2V), Vehicular to Infrastructure (V2I), Vehicular to Pedestrian (V2P), and other V2X services, addressing their specific needs.
6G 的出现标志着无线通信进入了一个变革阶段,带来了超级互联体验。本文探讨了通过整合 6G 功能优化车对物(V2X)通信中的侧链路技术。研究强调了侧链路资源分配方面的挑战,并介绍了数学解决方案。调查还进一步研究了蜂窝-V2X(C-V2X)和侧链路标准化在 6G V2X 侧链路背景下的演进,强调了关键功能和应用。此外,论文还研究了 5G-V2X Sidelink 中的 UE 间协调、资源重新评估和抢占操作,并探讨了相关挑战和数学公式。论文重点讨论了 5G-V2X 中基于功率的资源分配,探讨了 6G V2X Sidelink 面临的挑战并提出了解决方案。调查涵盖直接通信、碰撞问题、频谱合规性、资源公平性、不确定性和干扰管理,全面探讨了当前侧向链路资源分配所面临的挑战和解决方案。它评估了传统和新兴技术,如认知无线电、合作通信、功率控制、动态频谱接入、ML 辅助分配、区块链分配和边缘计算驱动分配。报告概述了 6G V2X 侧向链路中各种 V2X 服务的资源分配要求,明确侧重于车辆到车辆 (V2V)、车辆到基础设施 (V2I)、车辆到行人 (V2P) 以及其他 V2X 服务,以满足其特定需求。
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引用次数: 0
IM-OFDM ISAC Outperforms OFDM ISAC by Combining Multiple Sensing Observations IM-OFDM ISAC 通过结合多种传感观测优于 OFDM ISAC
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-02-16 DOI: 10.1109/OJVT.2024.3366772
Hugo Hawkins;Chao Xu;Lie-Liang Yang;Lajos Hanzo
Index Modulated Orthogonal Frequency-Division Multiplexing (IM-OFDM) based Integrated Sensing and Communication (ISAC) is potentially capable of outperforming Orthogonal Frequency-Division Multiplexing (OFDM) ISAC, since Index Modulation (IM) concentrates increased power on the activated subcarriers. This has been confirmed by authoritative publications for the IM-OFDM communication component. However, no evidence is found in the open literature that IM-OFDM sensing is capable of outperforming OFDM sensing, because the blank subcarriers impair the system's sensing functionality. The existing solutions either insert a radar signal into the deactivated subcarriers, thereby using a radar signal for sensing, or employ compressed sensing, which leads to a lower sensing performance than OFDM ISAC. Hence, a novel low complexity algorithm is proposed for ensuring that an IM-OFDM ISAC system outperforms its OFDM ISAC counterpart for both communication and sensing. The algorithm collects observations of the received signal to “fill in” the blank subcarriers in the sensing data created by IM-OFDM, whilst taking advantage of the increased subcarrier power attained by activating fewer subcarriers. This occurs over multiple transmit frames, which inevitably delays the target estimation. As OFDM sensing assumes low target velocities, this delay is shown to have a negligible impact on the sensing performance of IM-OFDM. The simulation results show that IM-OFDM ISAC is indeed capable of outperforming its OFDM ISAC counterpart for both sensing and communication. The impact of block interleaving and of the modulation type on the sensing performance is also discussed.
基于索引调制正交频分复用技术(IM-OFDM)的综合传感与通信技术(ISAC)有可能超越正交频分复用技术(OFDM)的综合传感与通信技术,因为索引调制(IM)将更大的功率集中在激活的子载波上。IM-OFDM 通信组件的权威出版物已经证实了这一点。然而,在公开文献中找不到任何证据表明 IM-OFDM 传感性能优于 OFDM 传感,因为空白子载波会损害系统的传感功能。现有的解决方案要么在停用的子载波中插入雷达信号,从而使用雷达信号进行传感,要么采用压缩传感,但压缩传感会导致传感性能低于 OFDM ISAC。因此,我们提出了一种新型低复杂度算法,以确保 IM-OFDM ISAC 系统在通信和传感方面都优于 OFDM ISAC 系统。该算法收集对接收信号的观测数据,以 "填补" IM-OFDM 创建的传感数据中的空白子载波,同时利用激活较少子载波而增加的子载波功率。这需要多个发送帧,不可避免地会延迟目标估计。由于 OFDM 传感假定目标速度较低,因此这种延迟对 IM-OFDM 传感性能的影响可以忽略不计。仿真结果表明,IM-OFDM ISAC 的传感和通信性能确实优于 OFDM ISAC。此外,还讨论了块交错和调制类型对传感性能的影响。
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引用次数: 0
IEEE Open Journal of Vehicular Technology Information for Authors IEEE Open Journal of Vehicular Technology 作者信息
IF 6.4 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2024-02-14 DOI: 10.1109/OJVT.2024.3358319
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引用次数: 0
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IEEE Open Journal of Vehicular Technology
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