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AI-Native End-to-End Network Slicing for Next-Generation Mission-Critical Services 面向下一代关键任务服务的人工智能原生端到端网络切片技术
IF 8.6 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-14 DOI: 10.1109/tccn.2024.3443265
Abdullah Ridwan Hossain, Weiqi Liu, Nirwan Ansari, Abbas Kiani, Tony Saboorian
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引用次数: 0
Toward Energy-Efficient Massive MIMO: Graph Neural Network Precoding for Mitigating Non-Linear PA Distortion 迈向高能效大规模多输入多输出(MIMO):用于缓解非线性功率放大器失真的图神经网络编码
IF 8.6 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-08 DOI: 10.1109/tccn.2024.3440921
Thomas Feys, Liesbet Van der Perre, François Rottenberg
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引用次数: 0
Unmanned Aerial Vehicle-Based Hybrid Backscatter and Wireless Powered Communications: 3-D Trajectory Design and Resource Scheduling 基于混合后向散射和无线供电通信的无人驾驶飞行器:三维轨迹设计与资源调度
IF 7.4 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-08 DOI: 10.1109/TCCN.2024.3440920
Bin Rao;Jie Hu;Kun Yang
This paper proposes a hybrid backscatter and wireless powered communications system based on unmanned aerial vehicle (UAV). UAV operates both as a source of radio frequency (RF) signals and an information collector. The system integrates passive information transmission (IT) via backscatter communication (BC) and active IT via wireless powered communication (WPC) to meet the requirements of low-power multi-function communication. At the same time, the system considers the LOS/NLOS channel at variable altitude. By jointly designing the 3D flight trajectory of UAV, the system time slot resources and the active transmit power of ground equipment can maximize the fair rate of ground equipment, and the system also considers various flight restrictions of UAV. Based on the block coordinate descent algorithm, this paper divides the original problem into several sub-problems and processes them separately, and finally obtains an approximate solution through joint iteration. The simulation results show that the hybrid backscatter and wireless powered communications system based on UAV proposed in this paper can significantly improve the fair rate of ground equipment compared with other benchmark schemes.
本文提出了一种基于无人飞行器(UAV)的混合反向散射和无线供电通信系统。无人飞行器既是射频(RF)信号源,又是信息收集器。该系统集成了通过后向散射通信(BC)进行的无源信息传输(IT)和通过无线供电通信(WPC)进行的有源信息传输(IT),以满足低功耗多功能通信的要求。同时,该系统还考虑了不同高度下的 LOS/NLOS 信道。通过联合设计无人机的三维飞行轨迹,系统时隙资源和地面设备的有源发射功率可最大限度地提高地面设备的公平率,系统还考虑了无人机的各种飞行限制。本文以块坐标下降算法为基础,将原问题分成若干子问题分别处理,最后通过联合迭代得到近似解。仿真结果表明,与其他基准方案相比,本文提出的基于无人机的后向散射与无线供电混合通信系统能显著提高地面设备的公平率。
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引用次数: 0
IEEE Communications Society 电气和电子工程师学会通信协会
IF 7.4 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-07 DOI: 10.1109/TCCN.2024.3430153
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引用次数: 0
IEEE Communications Society Information IEEE 通信学会信息
IF 7.4 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-07 DOI: 10.1109/TCCN.2024.3430155
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引用次数: 0
Joint Sensing, Communication and Computation for Edge Intelligence Oriented Symbiotic Communication With Intelligent Reflecting Surface 利用智能反射面进行面向边缘智能的共生通信的联合传感、通信和计算
IF 7.4 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-06 DOI: 10.1109/TCCN.2024.3439589
Ning Huang;Chenglong Dou;Yuan Wu;Liping Qian
Symbiotic radio, which exploits the benefits of passive communications and cognitive radio via backscattering or ambient reflecting, is a promising paradigm to support a large amount of Internet of Things devices with high spectrum efficiency and energy efficiency. For edge intelligence, data collection from heterogeneous devices including wireless sensing devices and wired sensing devices brings challenge for efficient model training. Intelligent reflecting surface (IRS) based symbiotic radio, which exploits IRS in backscatter systems to passively modulate information in the radio-frequency domain and strengthen both the primary links and the backscatter links, provides a promising solution to address this issue. In this paper, we investigate the joint sensing, communication and computation for edge intelligence oriented symbiotic radio with IRS. Specifically, IRS not only enhances the primary communication to deliver the sensing data for wireless sensing devices, but also delivers the data from wired sensing device to the edge server by modulating the data on the primary communication signal. We formulate a problem to jointly optimize the sensing strategies (i.e., the sensing durations and the sensing rates), the communication strategies (i.e., the IRS reflecting matrix and the data uploading durations) and the computing strategies (i.e., the computing capacities of the wireless sensing devices and the edge server), with the objective of maximizing the energy efficiency of the whole system. An efficient algorithm is proposed to solve the formulated optimization problem, with sufficient numerical results provided to demonstrate the performance advantages.
共生无线电通过后向散射或环境反射利用了无源通信和认知无线电的优势,是一种前景广阔的模式,可支持大量具有高频谱效率和能源效率的物联网设备。对于边缘智能,从异构设备(包括无线传感设备和有线传感设备)收集数据给高效模型训练带来了挑战。基于智能反射面(IRS)的共生无线电利用后向散射系统中的智能反射面,在射频域对信息进行被动调制,同时加强主链路和后向散射链路,为解决这一问题提供了一种前景广阔的解决方案。在本文中,我们研究了采用 IRS 的面向边缘智能的共生无线电的联合传感、通信和计算。具体来说,IRS 不仅能增强主通信,为无线传感设备传输传感数据,还能通过在主通信信号上调制数据,将有线传感设备的数据传输到边缘服务器。我们提出了一个联合优化传感策略(即传感持续时间和传感速率)、通信策略(即 IRS 反射矩阵和数据上传持续时间)和计算策略(即无线传感设备和边缘服务器的计算能力)的问题,目的是使整个系统的能效最大化。本文提出了一种高效算法来解决所提出的优化问题,并提供了充分的数值结果来证明其性能优势。
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引用次数: 0
Integrated Cognitive Symbiotic Computing and Ambient Backscatter Communication Network 集成认知共生计算和环境反向散射通信网络
IF 7.4 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-06 DOI: 10.1109/TCCN.2024.3439628
Chao Ren;Yanglin Hu;Lei Sun;Haojin Li;Chen Sun;Haijun Zhang;Arumugam Nallanathan;Victor C. M. Leung
Ambient backscatter communication (AmBC) possesses signal reception and energy-harvesting capabilities, allowing providing wireless cognition through simple energy detection. In typical applications like industrial Internet of Things (IoT), cognitive AmBC (CAmBC) networks are required to offer passive communication, edge computing, and cognition capabilities. However, passive communication relies on the environment and has limited computing power, creating interdependencies among spectrum sensing, networking, and computational cognition. Moreover, the heterogeneous evaluation metrics for communication and computation make unified planning and management challenging. Therefore, this paper proposes the integrated cognitive symbiotic computing-AmBC (CSC-AmBC) based on symbiotic communication and cognitive radio. CSC-AmBC integrates AmBC communication and computational cognition capabilities in a task-oriented manner, sharing proximity and AmBC computing and communication (ACC) resources among primary and secondary tasks. Meta-Link with Tokens and two cognitive ACC reuse models is used to facilitate integration and enhance task execution efficiency, which introduces Places to accommodate the heterogeneous and variable ACC resources. Additionally, the task execution gain metric is introduced to evaluate the multi-task ACC resource utilization. Numerical results validate the cognition networking and the advantage of the proposed task execution gain of CSC-AmBC.
环境反向散射通信(AmBC)具有信号接收和能量收集功能,可通过简单的能量检测提供无线认知。在工业物联网(IoT)等典型应用中,认知 AmBC(CAmBC)网络需要提供被动通信、边缘计算和认知功能。然而,无源通信依赖于环境,计算能力有限,这就造成了频谱传感、网络和计算认知之间的相互依存关系。此外,由于通信和计算的评价指标不尽相同,统一规划和管理具有挑战性。因此,本文提出了基于共生通信和认知无线电的集成认知共生计算-AmBC(CSC-AmBC)。CSC-AmBC 以任务为导向的方式整合了 AmBC 通信和计算认知能力,在主要任务和次要任务之间共享近距离和 AmBC 计算与通信(ACC)资源。元链接(Meta-Link)与令牌和两种认知 ACC 重用模型被用来促进整合和提高任务执行效率,其中引入了适应异构和可变 ACC 资源的 Places。此外,还引入了任务执行增益指标来评估多任务 ACC 资源利用率。数值结果验证了 CSC-AmBC 的认知网络和拟议任务执行增益的优势。
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引用次数: 0
Over-the-Air Modulation for RIS-Assisted Symbiotic Radios: Design, Analysis, and Optimization RIS 辅助共生无线电的空中调制:设计、分析和优化
IF 7.4 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-06 DOI: 10.1109/TCCN.2024.3439606
Hu Zhou;Ying-Chang Liang;Chau Yuen
In reconfigurable intelligent surface (RIS)-assisted symbiotic radio (SR), an RIS is exploited to assist the primary system and to simultaneously operate as a secondary transmitter by modulating its own information over the incident primary signal from the air. Such an operation is called over-the-air modulation. The existing modulation schemes such as on-off keying and binary phase-shift keying suffer from two problems for joint detection of the primary and secondary signals in RIS-assisted SR, i.e., one is the detection ambiguity problem when the direct link is blocked, and the other is the bit error rate (BER) error-floor problem when the direct link is weak. To address the two problems, we propose a novel modulation scheme by dividing the phase-shift matrix into two parts: one is the assistance beamforming matrix for assisting the primary system and the other is the transmission beamforming matrix for delivering the secondary signal. To optimize the assistance and transmission beamforming matrices, we first introduce an assistance factor that describes the performance requirement of the primary system and then formulate a problem to minimize the BER of the secondary system, while guaranteeing the BER requirement of the primary system controlled by the assistance factor. To solve this non-convex problem, we resort to the successive convex approximation technique to obtain a suboptimal solution. Furthermore, to draw more insights, we propose a low-complexity assistance-transmission beamforming structure by borrowing the idea from the classic maximum ratio transmission and zero forcing techniques. Finally, simulation results reveal an interesting tradeoff between the BER performance of the primary and secondary systems by adjusting the assistance factor.
在可重新配置的智能表面(RIS)辅助共生无线电(SR)中,RIS 被用来辅助主系统,并同时作为辅助发射机运行,将自身信息调制在从空中入射的主信号上。这种操作称为空中调制。现有的调制方案(如开关键控和二进制相移键控)在 RIS 辅助 SR 中联合检测主信号和副信号时存在两个问题,一个是直接链路受阻时的检测模糊性问题,另一个是直接链路较弱时的误码率(BER)误差下限问题。为解决这两个问题,我们提出了一种新的调制方案,将移相矩阵分为两部分:一部分是辅助波束成形矩阵,用于辅助主系统;另一部分是传输波束成形矩阵,用于传输辅助信号。为了优化辅助波束成形矩阵和传输波束成形矩阵,我们首先引入一个辅助系数来描述主系统的性能要求,然后提出一个问题,在保证由辅助系数控制的主系统误码率要求的前提下,最小化辅助系统的误码率。为了解决这个非凸问题,我们采用了连续凸近似技术来获得次优解。此外,为了获得更多启示,我们借鉴了经典的最大比传输和零强迫技术,提出了一种低复杂度的辅助传输波束成形结构。最后,仿真结果表明,通过调整辅助系数,可以在主系统和辅助系统的误码率性能之间做出有趣的权衡。
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引用次数: 0
Joint Beamforming Design for Double Active RIS-Assisted Radar-Communication Coexistence Systems 双主动 RIS 辅助雷达-通信共存系统的联合波束成形设计
IF 7.4 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-05 DOI: 10.1109/TCCN.2024.3438350
Mengyu Liu;Hong Ren;Cunhua Pan;Boshi Wang;Zhiyuan Yu;Ruisong Weng;Kangda Zhi;Yongchao He
Integrated sensing and communication (ISAC) technology has been considered as one of the key candidate technologies in the next-generation wireless communication systems. However, when radar and communication equipment coexist in the same system, i.e., radar-communication coexistence (RCC), the interference from communication systems to radar can be large and cannot be ignored. Recently, reconfigurable intelligent surface (RIS) has been introduced into RCC systems to reduce the interference. However, the “multiplicative fading” effect introduced by passive RIS limits its performance. To tackle this issue, we consider a double active RIS-assisted RCC system, which focuses on the design of the radar’s beamforming vector and the active RISs’ reflecting coefficient matrices, to maximize the achievable data rate of the communication system. The considered system needs to meet the radar detection constraint and the power budgets at the radar and the RISs. Since the problem is non-convex, we propose an algorithm based on the penalty dual decomposition (PDD) framework. Specifically, we initially introduce auxiliary variables to reformulate the coupled variables into equation constraints and incorporate these constraints into the objective function through the PDD framework. Then, we decouple the equivalent problem into several subproblems by invoking the block coordinate descent (BCD) method. Furthermore, we employ the Lagrange dual method to alternately optimize these subproblems. Simulation results verify the effectiveness of the proposed algorithm. Furthermore, the results also show that under the same power budget, deploying double active RISs in RCC systems can achieve higher data rate than those with single active RIS and double passive RISs.
综合传感与通信(ISAC)技术已被视为下一代无线通信系统的关键候选技术之一。然而,当雷达和通信设备共存于同一系统(即雷达-通信共存(RCC))时,通信系统对雷达的干扰可能很大,不容忽视。最近,可重构智能表面(RIS)被引入 RCC 系统,以减少干扰。然而,无源 RIS 带来的 "乘法衰落 "效应限制了其性能。为了解决这个问题,我们考虑了一种双主动 RIS 辅助 RCC 系统,重点是设计雷达的波束成形矢量和主动 RIS 的反射系数矩阵,以最大限度地提高通信系统的可实现数据速率。所考虑的系统需要满足雷达探测约束以及雷达和 RIS 的功率预算。由于问题是非凸的,我们提出了一种基于惩罚性对偶分解(PDD)框架的算法。具体来说,我们首先引入辅助变量,将耦合变量重新表述为等式约束,并通过 PDD 框架将这些约束纳入目标函数。然后,我们通过调用块坐标下降(BCD)方法将等效问题解耦为多个子问题。此外,我们还采用拉格朗日对偶法交替优化这些子问题。仿真结果验证了所提算法的有效性。此外,结果还表明,在相同的功率预算下,在 RCC 系统中部署双主动 RIS 比部署单主动 RIS 和双被动 RIS 能获得更高的数据速率。
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引用次数: 0
Generative AI for Secure Physical Layer Communications: A Survey 用于安全物理层通信的生成式人工智能:调查
IF 8.6 1区 计算机科学 Q1 TELECOMMUNICATIONS Pub Date : 2024-08-05 DOI: 10.1109/tccn.2024.3438379
Changyuan Zhao, Hongyang Du, Dusit Niyato, Jiawen Kang, Zehui Xiong, Dong In Kim, Xuemin Shen, Khaled B. Letaief
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引用次数: 0
期刊
IEEE Transactions on Cognitive Communications and Networking
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