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检索条件"任意字段=14th International Conference on COMmunication Systems and NETworkS, COMSNETS 2022"

共 2083 条记录，以下是1351-1360 订阅

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Bargaining-Based Cooperative Co-existence Framework for LTE-U systems 14

Bargaining-Based Cooperative Co-existence Framework for LTE-...

引用

14th IEEE international Wireless communications and Mobile Computing conference (IWCMC)

作者： AbdelRaheem, Mohamed Assiut Univ Elect Engn Dept Assiut Egypt

ISBN: (纸本)9781538620700

LTE-U is one of the promising solutions to the spectrum scarcity problem. LTE-U extends the benefits of LTE-A to the unlicensed 5 GHz band, mainly used by WiFi networks. the main challenge facing deploying the LTE-U is the coexistence between the LTE and WiFi systems such that the presence of LTE does not harm the WiFi network performance. In this paper, we introduce a bargaining-based cooperative coexistence framework that controls the LTE system access to the unlicensed band of the WiFi system. In this framework, LTE User Equipment (UE) utilizes its WiFi interfaces to act as a relay to forward the WiFi network packets using Decode and Forward (DF) cooperative communication to enhance the WiFi network performance. On return, the LTE system gains a welcomed access to the unlicensed band. the percentage of time the LTE system is allowed to access the unlicensed band is determined by bargaining theory solutions. We numerically evaluate the performance of the coexistence system where the results show that the proposed framework is beneficial for both the WiFi and LTE systems.

关键词： LTE-U WiFi Bargaining theory Cooperative communications

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Distributed Finite-Time Optimization 14

Distributed Finite-Time Optimization

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14th IEEE international conference on Control and Automation (ICCA)

作者： Yao, Lisha Yuan, Ye Sundaram, Shreyas Yang, Tao Univ North Texas Dept Elect Engn Denton TX 76203 USA Huazhong Univ Sci & Technol Sch Automat Wuhan 430074 Peoples R China Huazhong Univ Sci & Technol State Key Lab Digital Mfg Equipment & Technol Wuhan 430074 Peoples R China Purdue Univ Sch Elect & Comp Engn W Lafayette IN 47906 USA

ISBN: (纸本)9781538660898

In this paper, we consider the distributed optimization problem of multi-agent systems. the objective is to minimize the global objective function, which is the sum of local objective functions, by using local communication and local computation. We develop a distributed proportional-integral (PI) algorithm, based on the information received from its neighboring agents through the communication network and the gradient of its own objective function. For the case of quadratic objective functions, we establish sufficient conditions on the gain parameters under which the algorithm exponentially converges to the unique global minimizer. Moreover, we equip the proposed algorithm with a decentralized algorithm, which enables an arbitrarily chosen agent to compute the exact global minimizer within a finite number of time steps, using its own states observed over a successive time steps. Finally, the theoretical results are illustrated by numerical simulations.

关键词： Optimization Linear programming Distributed algorithms Convergence Symmetric matrices Eigenvalues and eigenfunctions communication networks"

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Increasing Network Resiliency via Data-Centric Offloading 14

Increasing Network Resiliency via Data-Centric Offloading

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14th international conference on Wireless and Mobile Computing, Networking and communications (WiMob)

作者： Teixeira, thiago Deshmukh, Rajvardhan Zink, Michael Univ Massachusetts Dept Elect & Comp Engn Amherst MA 01003 USA

ISBN: (纸本)9781538668764

Mobile traffic volume is increasing rapidly, pressuring the underlying infrastructure to quickly increase its capacity. New applications are further exacerbating this problem. Device to-Device communication has been long recognized as a means to offload traffic from the infrastructure;however, the host oriented model of the TCP/IP-based Internet poses challenges to this communication pattern. this paper addresses these issues by proposing a scheme that uses a data-centric model to fetch contents from nearby peers while increasing the resiliency of the network in cases of outages and disasters. We collected real data from social media to create a content request pattern and evaluate our approach through the simulation of realistic urban scenarios. Additionally, we analyze the scenario of large crowds in sports venues. Our simulation results show that we can offload traffic from the backhaul network by up to 51.7%, suggesting an advantageous path to support the surge in traffic while keeping complexity and cost for the network operator at manageable levels.

关键词： Information-Centric Networking Cellular networks Device-to-Device communication Crowdsourcing

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Wireless power transfer under secure communication with multiple antennas and eavesdroppers 1

引用

14th EAI international conference on Industrial networks and Intelligent systems, INISCOM 2018

作者： Tran, Duc-Dung Ha, Dac-Binh Nayyar, Anand Faculty of Electrical and Electronics Engineering Duy Tan University Danang Viet Nam Graduate School Duy Tan University Danang Viet Nam

ISBN: (数字)9783030058739

ISBN: (纸本)9783030058722

In this paper, we analyze the physical layer secrecy performance of a 5G radio frequency energy harvesting (RF-EH) network in the presence of multiple passive eavesdroppers. In this system, the source is considered as an energy-limited node, hence it harvests energy from RF signals generated by a power transfer station to use for information transmission. Additionally, in order to enhance the energy harvesting and system performance, the source is equipped with multiple antennas and employs maximal ratio combining (MRC) and transmit antenna selection (TAS) techniques to exploit the benefits of spatial diversity. Given these settings, the exact close-form expressions of existence probability of secrecy capacity and secrecy outage probability are derived. Furthermore, the obtained results indicate that multiple antennas technique applied at the source not only facilitates energy harvesting but also improves secrecy performance of the investigated network. Finally, Monte-Carlo simulation is provided to confirm our analytical results. © 2019, ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.

关键词： Energy harvesting

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Sparse Tensor Network System Identification for Nonlinear Circuit Macromodeling 14

Sparse Tensor Network System Identification for Nonlinear Ci...

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14th IEEE international conference on Solid-State and Integrated Circuit Technology (ICSICT)

作者： Zhang, Yuke Ko, Ching-Yun Chen, Cong Batselier, Kim Wong, Ngai Univ Hong Kong Dept Elect & Elect Engn Hong Kong Peoples R China

ISBN: (纸本)9781538644416

Volterra-series nonlinear system identification has recently been transformed into a tensor decomposition and optimization problem. Such tensor network reformulation with small tensor cores overcomes the curse of dimensionality in deploying high order Volterra kernels, and allows the fast simulation of arbitrarily nonlinear systems. this paper further advances the tensor core identification by adding sparsity: pruning unimportant weights and retraining the remaining weights, while retaining most accuracy. the resultant sparse macromodels are hardware friendly and can facilitate low power signal processing.

关键词： Integrated circuit modeling Mathematical model MIMO communication Nonlinear systems Hardware Artificial neural networks

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Synthesis Analysis and Evaluation of Hardware Scheduler based on Different Scheduling Algorithms 14

Synthesis Analysis and Evaluation of Hardware Scheduler base...

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14th international conference on Development and Application systems (DAS)

作者： Zagan, Ionel Stefan cel Mare Univ Fac Elect Engn & Comp Sci Suceava Romania Stefan cel Mare Univ Integrated Ctr Res Dev & Innovat Adv Mat Nanotech Suceava Romania

ISBN: (纸本)9781538614938

the limitations of the current real-time operating systems are given by the CPU architecture, the memory, and the I/O subsystem, but also by the high-level languages and their compilers, and the unpredictable answer of the asynchronous interrupts. the most important issue of a real time system is resource scheduling: processor, memory, I/O ports and communication networks, when systems are distributed. the present article gives an overview of the state of the art of qualitative research in terms of tasks schedulability algorithms used for the nMPRA (Multi Pipeline Register Architecture) CPU architecture in real-time environments. By introducing a jitter of maximum three clock cycles for the contexts switching of tasks, the nMPRA processor proves a deterministic hardware implementation, due to the integrated nHSE (Hardware Scheduler Engine for n tasks). this paper presents and analyzes the current state of real time operation systems with hardware implementation functions.

关键词： Pipeline processing Field programmable gate arrays Architecture Operating systems Scheduling

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Ontology Building for Cyber-Physical systems: A domain expert-centric approach 14

Ontology Building for Cyber-Physical Systems: A domain exper...

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14th IEEE international conference on Automation Science and Engineering (IEEE CASE)

作者： Hildebrandt, C. Toersleff, S. Caesar, B. Fay, A. Helmut Schmidt Univ Inst Automat Technol D-22043 Hamburg Germany

ISBN: (纸本)9781538635933

Cyber-physical systems (CPS) usually have to cope with open contexts, i.e. the context that these systems interact with through sensors and actuators or communication networks changes its morphology during runtime. For instance, CPS can be deployed in the manufacturing domain to form a modular production system, which, at some time during its lifecycle, might have to produce new products or to interact with new modules, which have been designed by different stakeholders. In order to be able to cope with open contexts, CPSs rely on ontologies that represent the information being shared among them. However, due to the complexity of a CPS's context, building these ontologies as a basis for information exchange during runtime is a non-trivial task that requires a structured approach. the contribution of this paper is twofold. First, we present an ontology building method that is tailored towards the needs of CPS, beginning with ontological requirements and ending with a formal ontology. Second, we apply this method to build an ontology for communicating information between CPSs about processes and machine states in the manufacturing domain.

关键词： Cyber Physical System

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A gamma-poisson block model for community detection in directed network 14

A gamma-poisson block model for community detection in direc...

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14th international conference on Natural Computation, Fuzzy systems and Knowledge Discovery, ICNC-FSKD 2018

作者： Gao, Siyuan Liu, Ruifang Miao, Hang School of Information and Communication Engineering Beijing University of Posts and Telecommunications Beijing100876 China

ISBN: (纸本)9781538680971

Detecting communities in networks is to find subgroups of nodes with similar characteristics, which is commonly defined as finding groups of nodes with dense connection in undirected networks. However, communities in directed networks can represent connectivity patterns because of asymmetric relations' which is difficult to capture using traditional algorithms. In this paper, a Gamma-Poisson block model is proposed for community detection in directed networks, which can model not only assortative communities but also communities with various connectivity patterns due to a block matrix. the model can also be extended to undirected networks if we set the block matrix symmetric, and for assortative community detection task if we set the block matrix diagonal. We develop an efficient Gibbs sampling algorithm for the inference work, which can scale to large sparse networks since links other than node pairs are considered during each iteration. We compare our model with several previous ones on a variety of real-world networks and the results demonstrate the advantages in our model. © 2018 IEEE.

关键词： Iterative methods

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Novel impairment-aware resource allocation scheme for elastic optical networks serving traffic with different service priorities

Novel impairment-aware resource allocation scheme for elasti...

引用

international conference on Industrial and Information systems, ICIIS

作者： Kusala Munasinghe M. Nishan Dharmaweera C. de Alwis Uditha Wijewardhana University of Sri Jayewardenepura University of Sri Jayawardenepura

ISBN: (数字)9781728137063

ISBN: (纸本)9781728137070

In this research paper, we propose a novel impairment-aware resource allocation scheme that increases spectrum efficiency of an elastic optical network (EON), while satisfying the quality of transmission (QoT) requirements of traffic connections with different service priorities (i.e., high and low priority traffic). To demonstrate the validity and superiority of our algorithm, we compared the results of our proposed resource allocation scheme against a benchmark algorithm. the results were simulated for a 6-node network and a 14-node network. Compared to the benchmark algorithm, on average, our proposed scheme increases spectrum efficiency by an additional 20% while ensuring a minimum latency for high priority traffic, causing minimum disruptions to existing low priority traffic, and blocking less than 1% of the total connections.

关键词： Optical communication Elastic optical networks Network optimization Resource allocation schemes Network impairments Service priorities Priority traffic network optimization Resource utilization Fiber optic networks Optical communication spectral efficiency management of resources minimum latency Traffic

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the Novel Reentrant Devices and Related Reduced networks 14

The Novel Reentrant Devices and Related Reduced Networks

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14th international Scientific-Technical conference on Actual Problems of Electronic Instrument Engineering, APEIE 2018

作者： Gorbachev, Anatoly P. Khrustalev, Vladimir A. Tarasenko, Natalya V. Radio Received and Radio Transmitted Devices Department Novosibirsk State Technical University Novosibirsk Russia Department of Electron Devices Novosibirsk State Technical University Novosibirsk Russia Department of General Physics Novosibirsk State Technical University Novosibirsk Russia

ISBN: (纸本)9781538670545

the novel reduced networks on a base of the nontraditional reentrant structures are proposed. By properly choosing their parameters, it is possible to create the versions of the devices those have suitable range of input voltage standing-wave ratio (VSWR) performance and transfer functions. Prototype of one of these devices has been successfully realized on a standard printed circuit board implementation. the proposed devices with the modified reentrant structures are suitable candidates for mobile communication systems. © 2018 IEEE.

关键词： Mobile telecommunication systems

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