检索结果-内蒙古大学图书馆

2023 IEEE INFOCOM Conference on Computer communications Workshops, INFOCOM WKSHPS 2023

作者： Zeng, Xinyuan Wang, Chao Wang, Cheng-Cai Li, Zan Xidian University State Key Laboratory of Integrated Service Network Xi'an710071 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing210003 China School of Automation Science and Electrical Engineering Beihang University Beijing100191 China

ISBN: (纸本)9781665494274

For protecting millimeter wave (mmWave) communications from clone attacks, this paper employs the deep learning to propose a physical layer authentication (PLA) approach for detecting attackers and classifying multiple legitimate nodes simultaneously. Different from conventional upper-layer authentication mechanisms, the proposed PLA approach exploits the spatial and temporal characteristics of mmWave channels to extract the unique fingerprints for building a lightweight channel-based authentication method. However, the existing threshold-based PLA methods could not discriminate multiple nodes, and supervised learning based approaches have limited application due to the unavailab.lity of attackers' channel state information (CSI) in practice. Besides, traditional real-valued deep neural networks cannot exploit the phase information of complex channels efficiently, which is unsuitable for designing the PLA scheme. Considering these, we propose a complex-valued classifiable autoencoder induced PLA scheme that includes a novel complex-valued long short-term memory (LSTM) module. Simulation results validate the superiority of our proposed PLA approach by comparing it with existing approaches and demonstrate that the detection probability of clone attacks positively correlates with antenna number. The classification performance is satisfactory even under the challenging experimental condition. © 2023 IEEE.

关键词： Authentication

来源：评论

学校读者我要写书评

暂无评论

A Positioning Method and Realization on Single Satellites in Different Orbits Using TDOA

引用

China communications 2023年第7期20卷 108-121页

作者： Laiding Zhao Xun Zhu Gengxin Zhang Zhaowen Wang College of Telecommunications and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China “Telecommunication and Network”National Engineering Research Center Nanjing University of Posts and TelecommunicationsNanjing 210003China Shanghai Aerospace Electronic Technology Institute Shanghai 201109China

The main geolocation technology currently used in COSPAS-SARSAT system is TDOA/FDOA or three-star TDOA,the principle is to determine the location of the signal source by using the difference in arrival time and frequency of the wireless signal between different ***,ground monitoring stations need to be equipped with more than two antenna receiving stations,and multiple satellites should be able to simultaneously relay the distress signal from the target source in order to achieve the geolocation ***,when the ground receiving system has only one antenna receiving station,or the target source is in a heavily obscured environment,the ground side is unable to receive the forwarded signals from multiple satellites at the same time,which will make it impossible to *** address these problems,in this paper,a time-sharing single satellite geolocations method based on different orbits is proposed for the first *** method uses one or several low-earth orbit satellites(LEO)and mediumearth orbit satellites(MEO)in the visible area,and the receiving station only needs one pair of receiving antennas to complete the *** can effectively compensate for the shortcomings of the traditional TDOA using the same moment and have better positioning accuracy compared with the single satellite in the same *** to the limited experimental conditions,this paper tests the navigation satellite using different orbit time-sharing single satellite geolocations,and proves that the positioning method has high positioning accuracy and has certain promotion and application value.

关键词： different orbit time-sharing non-convex optimization single satellite TDOA

来源：评论

学校读者我要写书评

暂无评论

C-PESA: An improved comentropy-based PESA algorithm

引用

2012 International Conference on Electrical and Electronics Engineering, ICEE 2012

作者： Wang, Kun Wang, Linlin Zhang, Yuhua Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing 210003 China College of Overseas Nanjing University of Posts and Telecommunications Nanjing 210003 China

ISBN: (纸本)9781461449805

To solve the increasing complexity with the growth of solution sets number in PESA, we present a comentropy-based PESA algorithm (C-PESA), which is an evolutionary algorithm of multi-objective optimization. In C-PESA, the gradual development and maturity of the solution sets can be observed with the continuous calculation of entropy values. This determines whether to stop the optimization process, and accordingly simplifies the run-time complexity of the algorithm to a certain degree. Simulation results show that the calculation amount of C-PESA increases linearly with the increasing number of population, and the efficiency of evolutionary algorithm also improves. © 2014 Springer Science+Business Media New York.

关键词： Evolutionary algorithms

来源：评论

学校读者我要写书评

暂无评论

Three-step three-party quantum secure direct communication

引用

Science China(Physics,Mechanics & Astronomy) 2018年第9期61卷 26-30页

作者： Shan-Shan Chen Lan Zhou Wei Zhong Yu-Bo Sheng Institute of Quantum Information and Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China College of Mathematics & Physics Nanjing University of Posts and Telecommunications Nanfing 210003 China Key Lab of Broadband Vireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing 210003 China

We propose a three-party quantum secure direct communication(QSDC) protocol with hyperentanglement in both spatial-mode and polarization degrees of freedom. The secret message can be encoded independently with desired unitary operations in two degrees of freedom. In this protocol, a party can synchronously obtain the other two parties' messages. Compared with previous three-party QSDC protocols, our protocol has several advantages. First, the single photons in our protocol are only required to transmit for three times. This advantage makes this protocol simple and useful. Second, Alice and Bob can send different secret messages to Charlie, respectively. Finally, with hyperentanglement, this protocol has a higher information capacity than other protocols.

关键词： quantum communication quantum secure direct communication hyperentanglement

来源：评论

学校读者我要写书评

暂无评论

The Phase Sensitivities for Different Phase-Shift Configurations in an SU(1,1) Interferometer

引用

communications in Theoretical Physics 2019年第12期71卷 1435-1442页

作者： Fan Wang Wei Zhong Lan Zhou Yu-Bo Sheng Institute of Quantum Information and Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China National Laboratory of Solid State Microstructures Nanjing UniversityNanjing 210093China School of Science Nanjing University of Posts and TelecommunicationsNanjing 210003China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsMinistry of EducationNanjing 210003China

We theoretically study the phase sensitivities of two different phase-shift configurations in an SU(1,1)interferometer with coherent■squeezed vacuum *** to quantum Cramér-Rao theorem,we analytically obtain the ultimate phase sensitivities for two types of phase shift accumulating in one-and *** with the case of one-arm phase shift,the model with phase shift encoding in both arms may provide a better sensitivity when the strength of squeezed vacuum state is large ***,we discuss the achievable sensitivities with the homodyne measurement by invoking of error-propagation *** addition,we study the effect of internal and outernal photon losses on the phase sensitivity of the SU(1,1)interferometer and find that the unbalanced interferometer is helpful to improve precision even with high external losses.

关键词： SU(1,1)interferometer quantum Fisher information one-and two-arm phase shifts Homodyne measurement

来源：评论

学校读者我要写书评

暂无评论

Towards secure data sharing in cloud computing using attribute based proxy re-encryption with keyword search

Towards secure data sharing in cloud computing using attribu...

引用

IEEE International Conference on Cloud Computing and Big Data Analysis (ICCCBDA)

作者： Hanshu Hong Zhixin Sun Network Technology Lab of Broadband Wireless Communication and Sensor Nanjing China

ISBN: (纸本)9781509045006

Cloud computing plays a significant role in big data era since it can provide dynamic, scalab.e virtual resource services via the Internet. However, how to enhance the security level of cloud computing is a challenging issue which is urgently to be tackled. In this paper, we center on the data security in cloud computing and present an attribute based proxy re-encryption scheme with keyword search (ABPRE-KS) to provide flexible and secure data sharing among users in the cloud. In our scheme, a user's access privileges are described by an access structure consisting of several attributes while ciphertexts are lab.led by several target attributes. A delegator can transform the original ciphertexts into proxy ciphertexts encrypted by the delegatee's attributes without leaking any sensitive information to the cloud server. Besides, a search request on the ciphertexts is allowed by a delegatee if his credentials satisfy the delegatee's access policy. By security analysis, our ABPRE-KS is confidential and keyword semantic secure under BDBH assumption.

关键词： Ciphers Indexes

来源：评论

学校读者我要写书评

暂无评论

A code dissemination protocol of low energy consumption

A code dissemination protocol of low energy consumption

引用

2012 International Conference on Web Information Systems and Mining, WISM 2012

作者： Wang, Haiyong Yang, Geng Xu, Jian Chen, Zhengyu Yang, Zhen Key Lab of Broadband Wireless Communication Sensor Network Technology of Ministry of Education Nanjing University of Post and Telecommunications Nanjing 210003 China College of Internet of Things Nanjing University of Posts and Telecommunications Nanjing 210003 China

ISBN: (纸本)9783642334689

Dissemination and update of the code image plays an important role in application of the Internet of Things (IoT). As a part of the IoT, wireless sensor networks should provide the code dissemination. The commonly used method for periodical broadcasting metadata packages to determine whether code dissemination is needed consumes excessive energy. So a low energy consumption code dissemination protocol is proposed for this issue. That is whether code dissemination is necessary can be determined when the sensor node is under normal communication. The simulation result shows that the proposal in this article has reduced the energy consumption when the network needs code dissemination. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Metadata

来源：评论

学校读者我要写书评

暂无评论

Energy-optimized 5G dual connectivity radio resource allocation 2

Energy-optimized 5G dual connectivity radio resource allocat...

引用

2nd IEEE International Conference on Electronics technology, ICET 2019

作者： Ying, Guo Qingmin, Meng Xiaoming, Wang Ministry of Education College of Telecommunications Information Engineering Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Nanjing210003 China National Mobile Communications Research Lab Southeast University Nanjing210096 China

ISBN: (纸本)9781728116181

Non-independent networking of 5G NSA (Non-Standalone) is receiving wide attention. This paper considers an NSA architecture in which a 4G base station is used as the primary station and a newly deployed 5G base station is used as the secondary station. Machine-type communication and vehicle networking applications place stringent requirements on end-to-end delay of 5G NSA like systems. Due to limited computing power, part of the terminal data needs to be uploaded to the edge cloud to perform intensive calculations. An optimized radio resource allocation scheme is proposed for dual connectivity transmission under 5G NSA. Second, the relevant handover strategies are also evaluated. Computer simulation results show that compared with single-connection transmission, dual-connection transmission can significantly improve the energy consumption performance of the transmission scheme under a time delay constraint. © 2019 IEEE.

关键词： Mobile edge computing

来源：评论

学校读者我要写书评

暂无评论

Feedback free distributed video coding rate control algorithm

Feedback free distributed video coding rate control algorith...

引用

International Conference on Information technology and Computer Application Engineering, ITCAE 2014

作者： Zhang, Deng Yin Ma, Teng Sci-tech Park of Internet of Things Nanjing University of Posts and Telecommunication Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunication Ministry of Education Nanjing China

ISBN: (纸本)9781138027176

In this paper, based on the feedback free distributed video coding system, a rate control algorithm was proposed for Wyner-Ziv frames. First, calculate the maximum correlation of coefficient band level between the source WZ frames and adjacent key frames in DCT domain, and the quantization matrix was determined based on maximum correlation and the QP of the key-frames;then, according to the generated low-complexity side information and source WZ frame with DCT transformation and quantization, allocate the bit plane rate. Experimental results show, compared with the existing rate control algorithm without feedback channel, the proposed algorithm can effectively improve the Rate-Distortion performance of the feedback free system with little additional complexity. © 2015 Taylor & Francis Group, London.

关键词： Feedback

来源：评论

学校读者我要写书评

暂无评论

Experimental verification of NP-complete problems via linear optics 13

Experimental verification of NP-complete problems via linear...

引用

13th International Conference on wireless communications and Signal Processing, WCSP 2021

作者： Li, Jian Liu, Tongjun Hou, Tianlei Wang, Xiaorun Liu, Chenxi Dai, Pan Wang, Qin Nanjing University of Posts and Telecommunications Inst. of Quant. Info. and Technology Broadband Wireless Communication and Sensor Network Technology National Engineering Research Center Key Lab of Ministry of Education Telecommunication and Networks Nanjing China

ISBN: (纸本)9781665407854

Non-deterministic polynomial (NP)-complete problems are collections of intractable problems for classical computers, but they may be easier to solve for quantum computers. Considering that practical quantum computers and networks are still under development, it is necessary to find alternatives to solve these problems. Simulations with linear optics offer a good choice since much of the research on quantum information is executed with this approach. In this work, based on Aaronson's protocol (Theory Comput, 5, 1, 2009) ad Arrazola et. al.'s linear optics scheme (npj Quantum Inf, 78, 022310, 2018), we present a demonstration of the NP-complete 2-out-of-4 SAT problem for 4 variables. The experimental results show that NP-complete problems can be well simulated through linear optical systems. © 2021 IEEE.

关键词： Quantum optics

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：