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检索条件"任意字段=Conference on Next-Generation Communication and Sensor Networks 2007"

共 1543 条记录，以下是111-120 订阅

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Vampire Bat Inspired Energy Efficient Protocol for Heterogeneous Wireless sensor networks

Vampire Bat Inspired Energy Efficient Protocol for Heterogen...

引用

International conference on Confluence The next generation Information Technology Summit (Confluence)

作者： Aayush Agarwal Vibha Nehra Amity School of Engineering and Technology Amity University Noida India

The paper provides an energy-efficient protocol for heterogeneous wireless sensor networks that was inspired by vampire bats (VB). VB uses strategic deployment in heterogeneous network which consists of Vampire nodes, cluster heads, and dependent nodes are the three different sorts of nodes. Cluster heads are positioned across the network and have been given the most energy possible since it is taken into account that nodes close to the base station spend more energy because they must serve as both data originators and data routers. As we know, normal nodes which aren't given any special extra energy are the first ones to die out. So, in order to increase the stability period, when a node's energy goes below a certain level, it is associated with a nearby vampire node to increase the energy of the dependent node, as now it won't participate in direct long-distance communication with the nearby cluster head node. The results from the simulation of the protocol showcase more proficient behavior in terms of network lifetime, network stability and throughput for VB based energy efficient protocol with respect to similar protocols available in literature.

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Performance Analysis of Distributed Compressed Sensing Schemes for Data Aggregation in Low-Power Wireless sensor networks

Performance Analysis of Distributed Compressed Sensing Schem...

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International conference on next generation Intelligent Systems (ICNGIS)

作者： Ebin M. Manuel Vinod Pankajakshan Department of Electronics and Communication Indian Institute of Technology Roorkee Uttarakhand India Dept. of Electronics and Communication College of Engineering Trivandrum Kerala India

Low-power wireless sensor networks (WSNs) consist of a large number of battery-operated sensors deployed over an area for objectives such as monitoring environments, tracking objects, and controlling various industrial operations. The aggregation of the huge amount of data generated from the explosively growing number of sensors is critical and challenging. Optimizing the energy spending and improving the overall lifetime of the network through efficient data aggregation and compression approaches are open problems in low-power WSNs. A major portion of the energy consumption of sensor nodes is contributed by data transmission. Hence, efficient data aggregation schemes are to be deployed to improve the lifetime of the WSNs. This paper evaluates the efficient data aggregation frameworks for low-power WSNs.

关键词： Wireless sensor networks Energy consumption Protocols Simulation Data aggregation sensors Performance analysis

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An Efficient and Certified LEO Satellite-Enabled Smart Management System

An Efficient and Certified LEO Satellite-Enabled Smart Manag...

引用

International conference on ICT For Smart Society (ICISS)

作者： Bowen Shen Kwok-Yan Lam Yuhang Zheng Kai Wey Lim Wenzhuo Yang Feng Li Nanyang Technological University Singapore

ISBN: (数字)9798350389654

ISBN: (纸本)9798350389661

Low Earth orbit (LEO) satellite systems are gaining popularity in the development of next-generation communication networks due to their ability to deliver broad and efficient communication services in remote and isolated areas where deploying base stations is not cost-effective. In this work, we present the design of a satellite-enabled system for efficient and certified service providing. First, taking advantage of the LEO satellite communications, our system can support a large number of various types of sensors including wind speed sensors, temperature sensors, cameras, etc. operating simultaneously and acquiring their information in real time. Second, to enhance the long-term maintenance of communication services and the collaboration of each device, a federated spectrum learning method for dynamic spectrum access is proposed. Third, blockchain technology is utilized in the global model aggregation in federated learning to strengthen the decentralization of the architecture for security purposes. We also present the details of each component of the designed system to demonstrate its feasibility and effectiveness.

关键词： Temperature sensors Satellites Wind speed Low earth orbit satellites sensor systems Real-time systems Maintenance Security Satellite communications sensor arrays

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Differentiated QoS DDPG-based Slicing and Drone Positioning for next generation networks

Differentiated QoS DDPG-based Slicing and Drone Positioning ...

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International conference on Distributed Computing in sensor Systems (DCOSS)

作者： Ghoshana Bista Abbas Bradai Emmanuel Moulay XLIM UMR CNRS 7252 Université de Poitiers Poitiers France LEAT UMR CNRS 7248 Université Côte d’Azur Nice France

ISBN: (数字)9798350369441

ISBN: (纸本)9798350369458

In the imminent era of 6G, Unmanned Aerial Vehicles (UAVs) emerge as indispensable connectors, seamlessly integrating ground and space networks with unparalleled flexibility and dynamic mobility. This article focuses on enhancing Quality of Service (QoS) by categorizing users into Premium, Silver, and Bronze tiers, akin to 5G slicing. Leveraging Deep Deterministic Policy Gradient (DDPG), the study unfolds in two phases. In the first phase, UAVs are strategically deployed using DDPG to optimize network coverage in areas of higher user density. This intelligent deployment adapts to user distribution patterns. In the second phase, dynamic repositioning using DDPG meets QoS requirements by prioritizing users based on categories. This two-phase approach showcases UAV adaptability in optimizing wireless communication systems in the evolving landscape of 6G networks. The proposed solution, driven by DDPG, ensures optimal coverage and responsiveness to diverse user needs.

关键词： 6G mobile communication Wireless communication Adaptation models Heuristic algorithms Quality of service Autonomous aerial vehicles Throughput

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Pixel-Level GPS Localization and Denoising using Computer Vision and 6G communication Beams

Pixel-Level GPS Localization and Denoising using Computer Vi...

引用

IEEE conference on Global communications (GLOBECOM)

作者： Gouranga Charan Tawfik Osman Ahmed Alkhateeb Arizona State University

ISBN: (数字)9798350351255

ISBN: (纸本)9798350351262

Accurate localization is crucial for various applications, including autonomous vehicles and next-generation wireless networks. However, the reliability and precision of Global Navigation Satellite Systems (GNSS), such as the Global Positioning System (GPS), are compromised by multi-path errors and non-line-of-sight scenarios. This paper presents a novel approach to enhance GPS accuracy by combining visual data from RGB cameras with wireless signals captured at millimeter-wave (mmWave) and sub-terahertz (sub-THz) basestations. We propose a sensing-aided framework for (i) site-specific GPS data characterization and (ii) GPS position de-noising that utilizes multi-modal visual and wireless information. Our approach is validated in a realistic Vehicle-to-Infrastructure (V2I) scenario using a comprehensive real-world dataset, demonstrating a substantial reduction in localization error to sub-meter levels. This method represents a significant advancement in achieving precise localization, particularly beneficial for high-mobility applications in 5G and beyond networks.

关键词： Location awareness Wireless sensor networks Visualization Global navigation satellite system Accuracy Noise reduction Millimeter wave technology sensors Millimeter wave communication Global Positioning System

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DFTs-OFDM Radar using Zadoff-Chu Sequence for Radar-communication Integration

DFTs-OFDM Radar using Zadoff-Chu Sequence for Radar-Communic...

引用

International conference on Computing, Networking and communications (ICNC)

作者： Masahiro Umehira Yoshihiko Takeuchi Faculty of Science and Technology Nanzan University Nagoya Japan

ISBN: (数字)9798331520960

ISBN: (纸本)9798331520977

Radar-communication integration is becoming a hot topic in next generation wireless communications such as Beyond 5G/6G and wireless LAN. As Orthogonal Frequency Division Multiplexing (OFDM) based approach has been widely used for broadband mobile wireless access, OFDM based approach is desirable to support sensing functions because of the commonality of signal processing, however the OFDM based approach has several drawbacks such as high PAPR. This paper proposes Discrete Fourier Transform spreading (DFTs)-OFDM radar using Zadoff-Chu (ZC) sequence, which is Constant Amplitude Zero Auto Correlation (CAZAC) sequence, which is suitable for radar applications, as a solution for radar-communication integration. This paper describes basic design issues such as signal format and signal processing on the proposed DFTs-OFDM radar using ZC sequence. It also shows preliminary correlation detection performance of the DFTs-OFDM radar using ZC sequence by computer simulations.

关键词： Wireless communication Wireless sensor networks Wireless LAN Computer simulation Radar detection Symbols Radar signal processing sensors Autocorrelation Signal resolution

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Non-coherent Optical FBMC Signals based on Extended Gaussian Function well Time-Frequency Localized filters 19

Non-coherent Optical FBMC Signals based on Extended Gaussian...

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19th IEEE International Wireless communications and Mobile Computing (IEEE IWCMC)

作者： Bahaaelden Bahaaelden, Mohammed S. Ortega, Beatriz Perez-Jimenez, Rafael Univ Politecn Valencia Inst Telecomunicac Aplicac Multimedia Valencia Spain Univ Las Palmas Gran Canaria Inst Technol Dev & Innovat Commun Las Palmas Gran Canaria Spain

ISBN: (纸本)9798350333398

This work presents an analysis of the time-frequency localization (TFL) property of extended Gaussian function (EGF) function for the first time in non-coherent optical filter bank multicarrier (FBMC) signals. The proposed system is exploited to overcome the degradation performance with isotropic orthogonal transfer algorithm (IOTA) filter for high transmission rate demands in next generation visible light communications. Comprehensive investigation reveals that the suppression impact of intrinsic imaginary interference (IMI) in Flip-FBMC burst can be delivered by maximizing the amplitude level of pseudo-pilots and minimizing noise floor beyond 60 dB. Thus, a superior performance is obtained over IOTA Flip-FBMC at low channel delays by using the promising property of high spreading factors (a) in EGF filter. Also, the proposed scheme offers better performance compared to optical OFDM at several propagation scenarios. However, a factors larger than 2.9 lead to a severe degradation in frequency response. Thereby a reduction in the main to side lobe ratio to -17.7 dB is resulted. Hence, an interfering retrieved signals is reported even at ideal transmission of a noise-free channel. However, the improvement in system robustness against IMI is more evident for the isotropic property of IOTA with Heisenberg factor (approximate to 1) over high delay spread paths with higher constellations mapping.

关键词： time-frequency localization property visible light communication intrinsic imaginary interference (IMI) Flip-filter bank multicarrier (Flip-FBMC)

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A Battery-less NFC sensor Transponder for Cattle Health Monitoring

A Battery-less NFC Sensor Transponder for Cattle Health Moni...

引用

Applied Sensing conference (APSCON), IEEE

作者： Dinesh R. Gawade B. V. B. Roy Simorangkir Sanjeev Kumar Melusine Pigeon Marco Belcastro Nadeem Rather John L. Buckley Brendan O’Flynn Tyndall National Institute University College Cork Dyke Parade Cork Ireland University of Bath Claverton Down Bath BA2 7AY United Kingdom

This paper presents the design and assessment of a battery-less NFC sensor transponder to measure biomarkers in the tear fluid of cattle eyes. A battery-less NFC temperature sensor prototype with a diameter of 22 mm is developed for the feasibility analysis of cattle health monitoring. With a measured wireless communication range of 44 mm, the developed NFC sensor prototype is shown to be a potential solution for wireless power and data transfer. In addition, the design method to develop a screen-printed, NFC-enabled smart contact lens for next-generation cattle health monitoring is also presented.

关键词： Temperature measurement Wireless communication Temperature sensors Wireless sensor networks Prototypes Cows sensors

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Development of a multi-purpose SDR payload for the HYPSO-2 satellite

Development of a multi-purpose SDR payload for the HYPSO-2 s...

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2022 IEEE Aerospace conference, AERO 2022

作者： Birkeland, Roger Quintana-Diaz, Gara Honore-Livermore, Evelyn Ekman, Torbjorn Agelet, Fernando Aguado Johansen, Tor A. Department of Electronic Systems Trondheim7491 Norway Ntnu Department of Engineering Cybernetics Trondheim7491 Norway

ISBN: (纸本)9781665437608

Recent developments in flexible Software Defined Radio (SDR) platforms provide researchers with a framework for small satellite missions that combine several parallel objectives. A part of the mission for the HYPer-spectral Smallsat for ocean Observation (HYPSO-2) satellite from the Norwegian University of Science and Technology (NTNU) is to provide a responsive and agile service to the users where the on-board application software can be updated in flight. The radio-oriented part of the mission objectives spans radio frequency interference measurements and channel characterization in the selected frequency band-400 MHz UHF-as well as a demonstration of communication services between the satellite and terrestrial sensor nodes and robotic agents. Energy-constrained sensor nodes in remote areas, such as the Arctic, is one of the application scenarios that would benefit from a tailored communication service. Even with services from emerging mega-constellations, traditional satellite communication systems, and new Internet of Things (IoT) over satellite services, there is a service gap for long-range-long-endurance robotic agents and Arctic sensor networks. Therefore, a better understanding of the radio frequency environment, including in-orbit interference as well as channel characteristics, can aid the design of responsive and robust communication links connecting individual assets of a larger System-of-Systems. Instead of just focusing on average spectrum interference levels, the frequency monitoring software enables the estimation of the interference dispersion and temporal variability. The HYPSO-2 is an evolution of the HYPSO-1 satellite, thus leveraging an already implemented mission software framework. Parts of the SDR payload have been tested on-board another satellite, and the in-orbit results from those measurements will be used as input for the next generation of the radio interference application. © 2022 IEEE.

关键词： sensor nodes

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Comparative Analysis of next generation Aircraft Data networks 19

Comparative Analysis of Next Generation Aircraft Data Networ...

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19th International conference on Smart Technologies (IEEE EUROCON)

作者： Kultur, Osman Rasit Bilge, Hasan Sakir Aselsan Inc Av Hardware Design Dept Ankara Turkey Gazi Univ Elect & Elect Engn Ankara Turkey

ISBN: (纸本)9781665432993

Aircraft have many sensors and modules scattered throughout their fuselage. Due to the ever-increasing sensor load (radar, electronic warfare, radio, camera, etc.), aircraft need more bandwidth and higher broadband communication backbones. Legacy protocols such as ARINC-429 and MIL-STD-1553 used in the communication of these modules are insufficient to meet the increased bandwidth requirements of today's aircraft. However, these legacy networks are highly reliable and deterministic, as avionics systems require. For this reason, different technologies have been developed without losing their quality of service and suitability for critical systems. Avionics Full-Duplex Switched Ethernet (AFDX) protocol, a special application of ARINC-664 Part 7, patented by Airbus, has come to the fore in recent years. Another prominent solution is the Time-Triggered Ethernet (TTEthernet) protocol, patented by TTTech. This paper compares these two protocols from the avionics perspective with a simulation model in OMNET++ and outlooks the new generation avionics networks.

关键词： avionics AFDX TTEthernet networks performance analysis latency jitter bandwidth OMNET plus

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