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A Downward Compatible Navigation and Communication Integrated Signal Technology 一种向下兼容的导航与通信集成信号技术
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211212
D. Zou, Yangzhen Zhao, Liansheng He, Shuai Han
Satellite transmission technology is developing rapidly, and based on the satellite system's broadcast transmission ability, the satellite system's navigation and communication ability has become a hot topic of future development. In earlier research, our team proposed a satellite navigation and communication integrated technology based on spread spectrum broadband signals. The technology can significantly increase the GNSS satellite downlink broadcast rate while ensuring downward compatibility. This paper summarizes the technology and its technical system. The proposed broadcast signal consists of the navigation signal and communication signal. The navigation signal part is precisely the same as the existing GNSS signal and provides the synchronous service for the communication signal based on the original positioning service. Cyclic Code Shift Keying (CCSK) modulation is used for the communication signal. PN codes in the same family as the navigation signal are used for the spread spectrum. The communication and navigation signals are in the same frequency and phase on radio frequency and synchronized on the baseband. In order to avoid the degradation of detection performance and error performance caused by cross-correlation interference between navigation and communication signals, the code phase optimization algorithm is introduced to turn the cross-correlation function into a favorable condition and enhance the detection performance of the pilot channel and communication channel. Because of the discontinuity of the code phase set, the receiver of the signal can use the fuzzy decision algorithm to improve the fault tolerance of the system to phase jitter and synchronization deviation. Because the proposed signal system transmits information by adjusting the signal delay, the signal is susceptible to the multipath effect. To solve this problem, we design the master-slave Rake receiver strategy by taking advantage of the characteristics of the pilot and communication signal in the same frequency and phase. The Rake receiver parameters are determined through the pilot channel and applied to the communication channel. This method has little change to the receiver and can effectively compensate for the multipath effect. It does not need to occupy more frequency points in the spectrum resources and has good compatibility, which is conducive to promoting and utilizing existing GNSS equipment.
卫星传输技术正在迅速发展,在卫星系统广播传输能力的基础上,卫星系统的导航和通信能力已成为未来发展的热点。在前期的研究中,我们团队提出了一种基于扩频宽带信号的卫星导航与通信集成技术。该技术可在保证下行兼容的同时,显著提高GNSS卫星下行广播速率。本文总结了该技术及其技术体系。所提出的广播信号由导航信号和通信信号组成。导航信号部分与现有GNSS信号完全相同,在原有定位服务的基础上为通信信号提供同步服务。通信信号采用循环码移键控(CCSK)调制。扩频使用与导航信号同族的PN码。通信和导航信号在射频上具有相同的频率和相位,在基带上是同步的。为了避免导航信号与通信信号相互关联干扰导致的检测性能和误差性能下降,引入码相位优化算法,使导频信道和通信信道的相互关联功能变为有利条件,提高导频信道和通信信道的检测性能。由于编码相位集的不连续性,信号接收端可以采用模糊决策算法来提高系统对相位抖动和同步偏差的容错性。由于所提出的信号系统通过调整信号延迟来传输信息,因此信号容易受到多径效应的影响。为了解决这一问题,我们利用导频和通信信号同频同相的特点,设计了主从Rake接收机策略。Rake接收机参数通过导频信道确定,并应用于通信信道。该方法对接收机变化小,能有效补偿多径效应。它不需要占用频谱资源中更多的频率点,具有良好的兼容性,有利于推广和利用现有的GNSS设备。
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引用次数: 0
Energy Saving Architecture based on Android TV in a Smart Home Environment 智能家居环境下基于Android电视的节能架构
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211240
Alessandro Floris, Simone Porcu, L. Atzori, M. Fadda, M. Anedda, Cristinel Gavrila, V. Popescu, D. Giusto
The massive increase in Internet data traffic caused by video-streaming applications has quickly raised energy consumption and carbon dioxide emissions (CO2). Therefore, there is a certain amount of research effort for lowering energy consumption related to streaming. In this paper, we first provide an overview of the studies measuring the energy consumed by the elements of the video streaming chain and then propose an HBBTv - based architecture for reducing the energy consumption based on the user behaviour in a Smart Home (SH) environment. The architecture is discussed in terms of sustainability for the end user's Quality of Experience (QoE).
视频流应用导致的互联网数据流量的大量增加迅速增加了能源消耗和二氧化碳排放。因此,对于降低与流相关的能耗,有一定的研究努力。在本文中,我们首先概述了测量视频流链元素能耗的研究,然后提出了一种基于HBBTv的架构,用于根据智能家居(SH)环境中的用户行为降低能耗。根据最终用户体验质量(QoE)的可持续性来讨论该体系结构。
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引用次数: 0
A Terahertz Metamaterial Biosensor For Liquid Detection Combined With Microfluidic Technique 结合微流控技术的太赫兹超材料液体检测生物传感器
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211465
Dawei Jiang, Jianqin Deng, Lanchang Xing, Bin Wang, Linlin Qu, Muzhi Gao, Gaoyang Zhu
In this paper, a terahertz metamaterial biosensor for liquid detection combined with a microfluidic technique is proposed. The model of this biosensor consists of a microfluidic channel below and metallic square split ring resonators above, leading the detect and screen abilities of this design unrelated to each other. As a result, this design allows large manufacturing errors and has a screening function and the advantage of high detection accuracy and a high degree of freedom. Because of these characteristics, this device shows great potential for the application of a label-free bio-detection in the terahertz band.
本文提出了一种结合微流控技术的太赫兹超材料液体检测生物传感器。该生物传感器的模型由下方的微流体通道和上方的金属方形分裂环谐振器组成,这使得该设计的检测和筛选能力彼此无关。因此,本设计允许制造误差大,并具有筛选功能和检测精度高、自由度高的优点。由于这些特点,该装置显示了在太赫兹波段无标签生物检测应用的巨大潜力。
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引用次数: 0
Adaptive Search Range of Template Matching for Plenoptic Video Coding under Microlens Constraints 微透镜约束下全光视频编码模板匹配的自适应搜索范围
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211226
V. V. Duong, T. N. Huu, Jonghoon Yim, B. Jeon
This paper proposes a fast template matching (TM) based intra prediction for plenoptic video coding. While the conventional TM method has demonstrated itself as a potentially effective coding tool for plenoptic video, it suffers from a huge time complexity of TM search at both encoder and decoder. In this paper, we note correlation among matching pixels arising from the microlens array structure of plenoptic camera, and propose an adaptive search range (ASR) exploiting relationship between the two sizes of prediction unit and microlens. The experimental results show that our method can reduce encoding time by about 88% and 73% compared to the conventional TM method in the AI-Main and RA-Main conditions, respectively, with acceptable coding loss.
提出了一种基于快速模板匹配的全光视频编码内预测方法。虽然传统的TM方法已经被证明是一种潜在的有效的全光学视频编码工具,但它在编码器和解码器上都存在巨大的TM搜索时间复杂度。本文注意到全光相机微透镜阵列结构中产生的匹配像素之间的相关性,提出了一种利用预测单元和微透镜两种尺寸之间关系的自适应搜索范围(ASR)。实验结果表明,在AI-Main和RA-Main条件下,与传统的TM方法相比,我们的方法可以分别减少约88%和73%的编码时间,并且编码损失可以接受。
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引用次数: 0
Impacts of Update Frequency on User Experience in Collaborative Virtual Environments 协同虚拟环境中更新频率对用户体验的影响
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211101
Duc Nguyen, Shibasaki Takara, Yaginuma Manato
Collaborative Virtual Environments (CVEs) are shared virtual spaces that allow geographically distributed users to interact with each other and collaborate on various tasks. To deliver a realistic user experience, CVEs applications need to frequently send update messages containing information about shared objects to other peers. In this paper, we carry out a subjective experiment to investigate the impact of update frequency on user experience in a Collaborative Virtual Environment. The findings from this study can help in designing an effective CVEs system.
协作虚拟环境(cve)是一种共享的虚拟空间,它允许地理上分布的用户相互交互并就各种任务进行协作。为了提供真实的用户体验,cve应用程序需要频繁地向其他对等体发送包含共享对象信息的更新消息。在本文中,我们进行了一个主观实验来研究更新频率对协作虚拟环境中用户体验的影响。本研究结果有助于设计有效的cve系统。
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引用次数: 0
Collaborative Task Offloading Based on Scalable DAG in Cell-Free HetMEC Networks 无小区HetMEC网络中基于可扩展DAG的协同任务卸载
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211161
Xi Lu, Xiaofei Yu, Chaowei Wang, Weidong Wang, Jun Zhen
With the development of the Internet of Things (IoT), there are numerous real-time applications emerging for B5G. Driven by the low-latency requirement, mobile edge computing has become an important technology for enhancing user experience and reducing network costs. However, the computing power of the single-processor CPU is limited, it is difficult to meet the low-latency requirements of computation-intensive applications. Besides, the performance of the network is limited by cell interference. In this paper, we design a user-centric Cell-Free Heterogeneous Mobile Edge Computing (CF-HetMEC) network architecture, which comprehensively utilizes the computing and transmission resources of multi-heterogeneous processors of Central Processing Units. A category-based Directed Acyclic Graphs (DAGs) subtask offloading algorithm in CF-HetMEC network is proposed to reduce the system delay. Simulation results show that the proposed scheme can effectively reduce the processing delay and the energy consumption of CF-HetMEC network.
随着物联网(IoT)的发展,B5G出现了许多实时应用。在低时延需求的驱动下,移动边缘计算已成为提升用户体验、降低网络成本的重要技术。然而,单处理器CPU的计算能力有限,很难满足计算密集型应用的低延迟要求。此外,网络的性能受到小区干扰的限制。本文设计了一种以用户为中心的无cell异构移动边缘计算(CF-HetMEC)网络架构,综合利用中央处理单元多异构处理器的计算和传输资源。提出了一种CF-HetMEC网络中基于类别的有向无环图(dag)子任务卸载算法,以降低系统时延。仿真结果表明,该方案能有效降低CF-HetMEC网络的处理延迟和能耗。
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引用次数: 0
GC-LDPC Coded Modulation GC-LDPC编码调制
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211141
Kun Liu, H. Yang
Due to the scarcity of spectrum resources, the combination of forward error correction (FEC) code and high-order modulation, i.e. coded-modulation (CM) is essential to the various high data rate multimedia communication services. In this paper, we propose a new CM scheme, namely the globally coupled (GC) low-density parity check (LDPC) CM where we choose GC-LDPC code as the FEC code and regular rectangular quadrature amplitude modulation (QAM) as the high order modulation. To guarantee the code with at least grith 8, the greatest common division-based method is used to constructe the GC-LDPC code. Simulation results show that, although the GC-LDPC code has poor performance under QPSK modulation compared with the LDPC code defined in 5G (5G-LDPC), the proposed GC-LDPC CM outperforms 5G-LPDC CM under 64QAM modulation about 0.5dB. The EXIT charts also theoretically demonstrate the GC-LDPC code the significant gain. Considering other advantages of GC-LDPC such as flexible rate design, parallel decoding and etc., the proposed GC-LDPC CM is attractive to multimedia communication systems which generally requires high spectral efficiency.
由于频谱资源的稀缺,前向纠错(FEC)码与高阶调制(即编码调制)的结合是实现各种高数据速率多媒体通信业务所必需的。在本文中,我们提出了一种新的CM方案,即全局耦合(GC)低密度奇偶校验(LDPC) CM,其中我们选择GC-LDPC码作为FEC码,规则矩形正交调幅(QAM)作为高阶调制。为了保证代码的长宽不小于8,采用基于最大共除法的方法构造GC-LDPC代码。仿真结果表明,尽管GC-LDPC码在QPSK调制下的性能较5G (5G-LDPC)中定义的LDPC码差,但本文提出的GC-LDPC CM在64QAM调制下的性能优于5G- lpdc CM约0.5dB。出口图也从理论上证明了GC-LDPC代码的显著增益。考虑到GC-LDPC具有灵活的速率设计、并行解码等优点,本文提出的GC-LDPC调制解调器对频谱效率要求较高的多媒体通信系统具有很大的吸引力。
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引用次数: 0
New Data Network Architecture: From Reactive Post-collecting to Intelligent Proactive Pre-sensing 新的数据网络架构:从被动后采集到智能主动预感知
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211235
Pengyu Li, Yanxia Xing
With the emergence of scenarios that consume large amounts of data such as AI/ML (artificial intelligence and machine learning) and ISAC (Integrated sensing and communication) technologies, how to efficiently utilize data while protecting data privacy and security, reducing communication overhead, and improving data utilization efficiency have become one of the major research interests for 6G network technologies. Current mobile communication networks only use external data service nodes, and the sensing of data is based on consumer subscription, which cannot meet the data service requirements of 6G networks. We propose a data service network architecture for mobile communication networks that supports intelligent collaboration of distributed data service nodes; transforms reactive subscription mode into proactive sensing mode with the assistance of AI/ML analysis; enhances data sensing, processing and storage mechanisms through the flexible use of data rules and knowledge, thus effectively improving the overall data service capability; further, with this architecture, possible solutions are discussed in detail with emphasis on data sensing difficulties.
随着AI/ML(人工智能与机器学习)、ISAC(集成传感与通信)技术等大量数据消耗场景的出现,如何在保护数据隐私与安全的同时高效利用数据,降低通信开销,提高数据利用效率,成为6G网络技术的主要研究方向之一。目前的移动通信网络仅使用外部数据服务节点,数据的感知基于消费者订阅,无法满足6G网络的数据业务需求。提出了一种支持分布式数据服务节点智能协同的移动通信网络数据服务网络架构;在AI/ML分析的辅助下,将被动订阅模式转变为主动感知模式;通过灵活运用数据规则和知识,增强数据感知、处理和存储机制,有效提升整体数据服务能力;此外,在此架构下,详细讨论了可能的解决方案,重点是数据感知困难。
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引用次数: 0
ATSC 3.0 ITCN Prototype with Remote Studio ATSC 3.0 ITCN原型与远程工作室
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211118
Rufino Cabrera, J. Montalbán, O. Landrove, E. Iradier, P. Angueira, Willie Perez, M. Albu, Orest Sushko, Yiyan Wu, Wei Li, Z. Hong, Liang Zhang, Sung-Ik Park, Sunhyoung Kwon, N. Hur
Inter-Tower Communication Network (ITCN) is a new paradigm for digital terrestrial television infrastructure based on the novel technical features of ATSC 3.O. In the current proposal, a Remote Broadcast Center connected via Internet Protocol (IP) is used to increase the flexibility of transmitters to manage content. An ITCN protocol is developed with bidirectional communication between towers. Finally, a new service based on an IoT network is offered to exchange information on environmental parameters between both transmitters. As a result, the potential of digital broadcast networks as a bidirectional communication infrastructure is revealed through appropriate protocol definitions and physical layer configurations.
塔际通信网络(ITCN)是基于ATSC 3.0的新技术特点的数字地面电视基础设施的新范式。在目前的提案中,通过互联网协议(IP)连接的远程广播中心被用于增加发射机管理内容的灵活性。提出了一种具有塔间双向通信功能的ITCN协议。最后,提供了一种基于物联网网络的新服务,以交换两个发射器之间的环境参数信息。因此,通过适当的协议定义和物理层配置,数字广播网络作为双向通信基础设施的潜力被揭示出来。
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引用次数: 0
Blockchain Enabled Trustworthy Management Scheme for Network Co-Construction and Sharing 基于区块链的网络共建共享可信管理方案
Pub Date : 2023-06-14 DOI: 10.1109/BMSB58369.2023.10211100
Bei Li, Tian Xiao, Xiaomeng Zhu, Fuchang Li, Xueqin Jia, Xi Guo, Anshun Zhou, Mingde Huo, Lexi Xu, Guanghai Liu
Network co-construction and sharing can improve network efficiency, but the co-construction and sharing management in resource allocation, user behavior, network quality, etc. is complicated to solve manually. It is necessary to use new technologies to realize mutual trust, visible data, symmetrical information and equal perception. This article focuses on the development of ICDT, co-construction and sharing, puts forward the network coconstruction and sharing management based on blockchain, which realizes the data cochain of all parties, data encryption security, rights confirmation of all parties, visible data, mutual trust of all parties, which improves the efficiency of the coconstruction and sharing management. Finally, this article puts forward the prospect of federal learning and the development of a blockchain co-empowerment operator network.
网络共建共享可以提高网络效率,但在资源分配、用户行为、网络质量等方面的共建共享管理较复杂,难以人工解决。需要利用新技术实现相互信任、数据可见、信息对称、感知平等。本文围绕ICDT的发展、共建共享,提出了基于区块链的网络共建共享管理,实现了各方数据共链、数据加密安全、各方权利确认、数据可见、各方互信,提高了共建共享管理的效率。最后,本文提出了联邦学习和区块链共同授权运营商网络发展的前景。
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引用次数: 0
期刊
IEEE international Symposium on Broadband Multimedia Systems and Broadcasting
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