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Recognition of Wobbling and Nutating Cone-shaped targets

Recognition of Wobbling and Nutating Cone-shaped targets

2010 IEEE International Conference on Intelligent Computing and Intelligent Systems(2010 IEEE 智能计算与智能系统国际会议 ICIS 2010)

作者： Hanqing Ding Yongsheng Guan School of Computer and Communication Engineering Zhengzhou University of Light Industry Zhengzhou C State Key Lab.of Integrated Service Networks Xidian University Xi'an China

ISBN: (纸本)9781424465828

Recognition of wobbling and nutating cone-shaped targets is a major challenge in space target recognition area. In this paper, we develop a signal model of multiple scattering centers on the wobbling and nutating cone-shaped targets, analyze the microDoppler characteristics of their echo. It is concluded that the micro-Doppler features have remarkable differences due to their different micromotion. Therefore, we apply viterbi algorithm to extract the micro-Doppler and micro-motion parameters, the simulation results demonstrate that the wobbling and nutating cone-shaped targets can be recognized effectively in this way.

关键词： recognition multi-scatters viterbi algorithm nutating wobbling

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Detecting MAC Misbehavior of IEEE 802.11 Devices within Ultra Dense Wi-Fi networks

Detecting MAC Misbehavior of IEEE 802.11 Devices within Ultr...

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International Conference on Telecommunications (ICT)

作者： M. Shahwaiz Afaqui Stephen Brown Ronan Farrell Wireless Networks Research Lab Universitat Oberta de Catalunya Spain Department of Computer Science Maynooth University Ireland Department of Electronic Engineering Maynooth University Ireland

The widespread deployment of IEEE 802.11 has made it an attractive target for potential attackers. The latest IEEE 802.11 standard has introduced encryption and authentication protocols that primarily address the issues of confidentiality and access control. However, improving network availability in the presence of misbehaving stations has not been addressed in the standard. Existing research addresses the problem of detecting misbehavior in scenarios without overlapping cells. However, in real scenarios cells overlap, resulting in a challenging environment for detecting misbehavior. The contribution of this paper is the presentation and evaluation of a new method for detecting misbehavior in this environment. This method is based on an objective function that uses a broad range of symptoms. Simulation results indicate that this new approach is very sensitive to misbehaving stations in ultra dense networks.

关键词： IEEE 802.11 Standard Wireless fidelity Throughput Transmitters Protocols Space stations Electronic mail

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A Lightweight Machine Learning Approach for Delay-Aware Cell-Switching in 6G HAPS networks

A Lightweight Machine Learning Approach for Delay-Aware Cell...

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IEEE International Conference on Communications Workshops, ICC

作者： Görkem Berkay Koç Berk Çiloğlu Metin Ozturk Halim Yanikomeroglu Electrical and Electronics Engineering Ankara Yıldırım Beyazit University Ankara Türkiye Non-Terrestrial Networks (NTN) Lab Systems and Computer Engineering Carleton University Ottawa Canada

ISBN: (数字)9798350304053

ISBN: (纸本)9798350304060

This study investigates the integration of a high altitude platform station (HAPS), a non-terrestrial network (NTN) node, into the cell-switching paradigm for energy savings. By doing so, the sustainability and ubiquitous connectivity targets of the sixth generation of communication systems (6G) can be achieved simultaneously. Additionally, a delay-aware approach is also adopted, where the delay profiles of users are respected with a best-effort strategy. To this end, a novel, simple, and lightweight $Q$ -learning algorithm is designed to address the cell-switching optimization problem. Various interference scenarios and delay situations between base stations are examined in terms of energy consumption and quality-of-service (QoS), and the results confirm the efficacy of the proposed algorithm.

关键词： 6G mobile communication Machine learning algorithms Conferences Noise Quality of service Interference Switches

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Haplotype-resolved Chinese male genome assembly based on high-fidelity sequencing

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Fundamental Research 2022年第6期2卷 946-953页

作者： Xiaofei Yang Xixi Zhao Shoufang Qu Peng Jia Bo Wang Shenghan Gao Tun Xu Wenxin Zhang Jie Huang Kai Ye Genome Institute the First Affiliated Hospital of Xi'an Jiaotong UniversityXi'an 710061ShaanxiChina School of Computer Science and Technology Faculty of Electronic and Information EngineeringXi'an Jiaotong UniversityXi'an 710049ShaanxiChina MOE Key Lab for Intelligent Networks&Networks Security Faculty of Electronic and Information EngineeringXi'an Jiaotong UniversityXi'an 710049ShaanxiChina National Institutes for food and drug Control(NIFDC) No.2Tiantan XiliDongcheng DistrictBeijing 102629China School of Automation Science and Engineering Faculty of Electronic and Information EngineeringXi'an Jiaotong UniversityXi'an 710049ShaanxiChina School of Life Science and Technology Xi'an Jiaotong UniversityXi'an 710049ShaanxiChina Faculty of Science Leiden UniversityLeidenThe Netherlands

The advantages of both the length and accuracy of high-fidelity(HiFi)reads enable chromosome-scale haplotype-resolved genome *** this study,we sequenced a cell line named HJ,established from a Chinese Han male individual by using HiFi and *** assembled two high-quality haplotypes of the HJ genome(haplotype 1(H1):3.1 Gb,haplotype 2(H2):2.9 Gb).The continuity(H1:contig N50=28.2 Mb,H2:contig N50=25.9 Mb)and completeness(BUSCO:H1=94.9%,H2=93.5%)are substantially better than those of other Chinese genomes,for example,HX1,NH1.0,and *** comparing HJ genome with GRCh38,we reported the mutation landscape of HJ and found that 176 and 213 N-gaps were filled in H1 and H2,*** addition,we detected 12.9 Mb and 13.4 Mb novel sequences containing 246 and 135 protein-coding genes in H1 and H2,*** results demonstrate the advantages of HiFi reads in haplotype-resolved genome assembly and provide two high-quality haplotypes of a potential Chinese genome as a reference for the Chinese Han population.

关键词： Genome assembly HiFi reads Human genome Haplotype-resolved Chinese Han Mutation landscape

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Demonstration of 50Gb/s/λ symmetric PAM4 TDM-PON with 10G-class optics and DSP-free ONUs in the O-band

Demonstration of 50Gb/s/λ symmetric PAM4 TDM-PON with 10G-c...

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Optical Fiber Communication Conference, OFC 2018

作者： Zhang, Kuo Zhuge, Qunbi Xin, Haiyun Xing, Zhenping Xiang, Meng Fan, Sujie Yi, Lilin Hu, Weisheng Plant, David V. State Key Lab of Advanced Optical Communication System and Networks Shanghai Jiao Tong University Shanghai200240 China Department of Electrical and Computer Engineering McGill University MontrealQCH3A 2A7 Canada Ciena Corporation OttawaONK2K 0L1 Canada

We demonstrate a 50Gb/s/λ PAM4 TDM-PON based on 10G-class DMLs and PDs in Oband with downlink pre-compensation and uplink post-equalization. Results show that, without any DSP in the ONU, 29dB optical power budget is... 详细信息

ISBN: (纸本)9781943580385

关键词： Budget control

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HAPS-Enabled Sustainability Provision in Cellular networks Through Cell-Switching

HAPS-Enabled Sustainability Provision in Cellular Networks T...

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International Black Sea Conference on Communications and Networking (BlackSeaCom)

作者： Görkem Berkay Koç Berk Çiloğlu Metin Öztürk Halim Yanikomeroglu Electrical and Electronics Engineering Ankara Yıldırım Beyazıt University Ankara Türkiye Non-Terrestrial Networks (NTN) Lab Systems and Computer Engineering Carleton University Ottawa Canada

There is a consensus in the literature that cell-switching is a viable solution to tackle the draconian increase in the energy consumption of cellular networks. High altitude platform station (HAPS) draws considerable attention with its massive footprint, high capacity, and ubiquitous connectivity. The aim of this study is to show the potential benefits of using HAPS in cell-switching methods by being a bountiful host for offloaded users from cell-switching operations. More specifically, HAPS is included in the network so that it can increase the switching off opportunities by providing extra coverage and capacity. In this regard, a vertical heterogeneous network scenario, wherein there are terrestrial small cells and a single HAPS, is considered in the simulations, and different user density cases are tested in order to analyze the impact of network density on the performance of HAPS-enabled cell-switching. The simulation results demonstrate that a significant amount of reduction in energy consumption (as high as 16%) is obtained while ensuring quality-of-service (QoS) requirements.

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Vehicle Re-Identification by Deep Feature Embedding and Approximate Nearest Neighbors

Vehicle Re-Identification by Deep Feature Embedding and Appr...

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International Joint Conference on Neural networks (IJCNN)

作者： Artur O. R. Franco Felipe F. Soares Aloísio V. Lira Neto José A. F. de Macêdo Paulo A. L. Rego Fernando A. C. Gomes José G. R. Maia Federal University of Ceará (UFC) Group of Computer Networks Software Engineering and Systems (GREat) Brazilian Federal Highway Police Insight Data Science Lab Virtual UFC Institute

ISBN: (数字)9781728169262

ISBN: (纸本)9781728169279

Disorganized urban growth has led cities to chaos, which has brought countless challenges for their development in several sectors, such as traffic organization, public safety, and transportation. Vehicular re-identification (ReID) technologies have become increasingly important in this context since these allow to produce insights capable of benefiting many areas. As recently, methods frequently resorted to Deep Learning and Convolutional Neural networks (CNNs), especially in the design of loss functions capable of improving the learning capacity of CNNs. Couple and triplet loss techniques have gained prominence, but their effectiveness depends on the mining of samples to converge properly. In this paper, we investigate a new simple approach for vehicle ReID by combining sample mining strategy and approximate nearest neighbor (ANN) method to improve retrieval quality. By relying only on relatively low-dimensional deep features, we were able to obtain state-of-the-art performance on the VeRi-776 dataset in terms of mAP, HIT@1, and HIT@5 metrics, but using relatively simple CNN and ANN methods, which are feasible in CPU for real-time scenarios.

关键词： Measurement Cameras Training Licenses Image color analysis Safety Urban areas

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Turbo-XZ Algorithm: Low-Latency Decoders for Quantum LDPC Codes

Turbo-XZ Algorithm: Low-Latency Decoders for Quantum LDPC Co...

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Topics in Coding (ISTC), International Symposium on

作者： Nithin Raveendran Emmanuel Boutillon Bane Vasić Department of Electrical and Computer Engineering Center for Quantum Networks The University of Arizona Tucson AZ Lab-STICC UMR 6285 CNRS Université Bretagne Sud Lorient Cedex France

We propose a low latency hardware-friendly decoding framework for Calderbank-Shor-Steane (CSS) quantum low-density parity-check (QLDPC) codes under the depolarizing noise model. With a given latency constraint, the proposed decoder, referred to generally as the Turbo-XZ decoding algorithm utilizes the correlation of Pauli X and Z errors. In this framework, we introduce early stopping and switching decoders to meet latency constraints and improve error correction performance for different decoders including the bit-flip (BF), fixed BF (proposed hardware-friendly variant of BF), and normalized min-sum algorithm (nMSA). This decoding framework allows various tradeoffs in terms of latency, complexity, and decoding performance which are discussed briefly. Simulation results show that the BF-Turbo-XZ decoder performs close to (and beyond in some cases) the nMSA version with lower complexity and latency. Our proposed fixed BF approach reduces complexity with minimal performance degradation. For example with a generalized bicycle code, nMSA performs better for higher depolarizing values (p>0.02) at a higher cost, while low-complexity BF-Turbo-XZ decoders are better at low depolarizing values.

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Joint Robotic Aerial Base Station Deployment and Wireless Backhauling in 6G Multi-hop networks

arXiv

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arXiv 2024年

作者： Shang, Wen Liao, Yuan Friderikos, Vasilis Yanikomeroglu, Halim Center of Telecommunication Research King’s College London London United Kingdom Non-Terrestrial Networks Lab Department of Systems and Computer Engineering Carleton University Ottawa Canada

Due to their ability to anchor into tall urban landforms, such as lampposts or street lights, robotic aerial base stations (RABSs) can create a hyper-flexible wireless multi-hop heterogeneous network to meet the forthcoming green, densified, and dynamic network deployment to support, inter alia, high data rates. In this work, we propose a network infrastructure that can concurrently support the wireless backhaul link capacity and access link traffic demand in the millimeter-wave (mmWave) frequency band. The RABSs grasping locations, resource blocks (RBs) assignment, and route flow control are simultaneously optimized to maximize the served traffic demands. Robotic base stations capitalize on the fact that traffic distribution varies considerably across both time and space within a given geographical area. Hence, they are able to relocate to suitable locations, i.e.,’follow’ the traffic demand as it unfolds to increase the overall network efficiency. To tackle the curse of dimensionality of the proposed mixed-integer linear problem, we propose a greedy algorithm to obtain a competitive solution with low computational complexity. Compared to baseline models, which are heterogeneous networks with randomly deployed fixed small cells and pre-allocated RBs for wireless access and backhaul links, a wide set of numerical investigations reveals that robotic base stations could improve the served traffic demand. Specifically, the proposed mode serves at most 65% more traffic demand compared to an equal number of deployed fixed small cells. © 2024, CC BY.

关键词： Antennas

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A Novel Biometric-based Authentication Scheme with Privacy Protection

A Novel Biometric-based Authentication Scheme with Privacy P...

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The Fifth International Conference on Information Assurance and Security(第五届信息保障与安全国际会议)

作者： Li Huixian Pang Liaojun School of Computer Science and Engineering Northwestern Polytechnical University Xi'an China The Ministry of Education Key Lab.of Comput.Networks and Information Security Xidian University Xi'a

ISBN: (纸本)9780769537443

Since biometric data are unique and permanent characteristics of individuals, the privacy protection of biometric authentication schemes has become a common concern of the public. Recently, Tang et al. proposed a biometric-based authentication scheme in an attempt to solve the privacy concerns. However, their scheme cannot resist the attack of tamper. Motivated by these concerns, in this paper, we proposed a new biometric-based authentication scheme, which achieves identity privacy and transaction untraceability.. Its security is based on the semantic security of the ElGamal algorithm. Analysis results show that our scheme is higher in efficiency than Tang et al. scheme does, and meanwhile, it can resist the tamper attack. It is concluded that the proposed scheme is more secure and more practical than the existing ones.

关键词： biometric-based authentication privacy protection untraceability tamper attack

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