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Three-step three-party quantum secure direct communication

中国科学（物理学力学天文学） 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 Nanjing 210003 China Institute of Quantum Information and Technology Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsMinistry 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 *** secret message can be encoded independently with desired unitary operations in two degrees of *** this protocol,a party can synchronously obtain the other two parties' *** with previous three-party QSDC protocols,our protocol has several ***,the single photons in our protocol are only required to transmit for three *** advantage makes this protocol simple and ***,Alice and Bob can send different secret messages to Charlie,***,with hyperentanglement,this protocol has a higher information capacity than other protocols.

关键词： quantum communication quantum secure direct communication hyperentanglement

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International Conference on wireless communications and Signal Processing (WCSP)

作者： Lihua Gao Haitao Ling Xutong Fan Jianxin Chen Qin Yin Lei Wang China Telecom Co Jiangsu Branch. Key Lab of Broadband Wireless Communication and Sensor Network Technology University of Telecommunications Ministry of Education Nanjing Multimedia Service Product Dept. China Telecom Co Jiangsu Branch Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Telecommunications Ministry of Education

ISBN: (纸本)9781509028610

With the popularity of network, P2P-based Video on Demand (VoD) has become one of the main services in Internet. However, due to the huge amount of videos, how to access the video quickly is important since it affects the subscriber's experience. In this paper, a popularity-driven storing model is proposed to fasten the video discovery for a centralized P2P-VoD system. All videos are stored in a binary tree in the server according to their popularities. Experimental results show that this scheme works well in terms of discovery delay and resource utilization.

关键词： Binary trees Servers Delays Peer-to-peer computing Telecommunications Computational modeling wireless communication

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Social-aware file-sharing mechanism for device-to-device communications

Social-aware file-sharing mechanism for device-to-device com...

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International Conference on wireless communications and Signal Processing (WCSP)

作者： Lei Wang Lulu Gao Aiqing Zhang Mingkai Chen National Mobile Communications Research Laboratory Southeast University Nanjing China NUPT Key Lab of Broadband Wireless Communication and Sensor Network Technology China

ISBN: (纸本)9781467376884

Device-to-device (D2D) communication technology can significantly improve energy efficiency and offload base station traffic. It has become a new research focus in next generation mobile communications. In this paper, a file-sharing mechanism based on social networks is proposed for the D2D communication system underlaying cellular networks aiming at improving the users' quality of experience (QoE). In the proposed mechanism, all users are divided into several groups according to the documentation requirements. Then the D2D communication links are built within each group by fully considering the social relationships and trust degrees of users. The target files give priority to be shared through the D2D mode. Theoretical analysis and extensive simulation results show clearly that the social relationships can affect the whole wireless networks significantly. Selecting a user with the largest social degree as a central user can greatly reduce the transmission delay, relieve the heavy burden of base stations and then optimize the overall performance of cellular communication systems.

关键词： Base stations Social network services Delays wireless communication Mobile communication Quality of service

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Mixed-norm subspace pursuit algorithm for compressed sensing in the presence of impulsive noise

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Journal of Computational Information Systems 2014年第13期10卷 5637-5648页

作者： Ji, Yunyun Yang, Zhen College of Communication and Information Engineering Nanjing University of Posts and Telecommunications Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing China

The subspace pursuit algorithm in compressed sensing cannot achieve desirable reconstruction performance in the presence of impulsive noise based on the fact that the support detection and least squares are not robust to the impulsive noise. And then we propose a mixed-norm subspace pursuit algorithm to achieve sparse reconstruction in the impulsive noise environment. The mixed-norm subspace pursuit algorithm takes advantage of mutual influence of two different residuals to iteratively improve the performance of support detection and measurement set detection. It has significant characteristics: effectiveness in additive Gaussian white noise environment and robustness to impulsive noise, which have been verified by theoretical and experimental results. © 2014 by Binary Information Press

关键词： Compressed sensing

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Secure Efficient Routing Based on network Coding in the Delay Tolerant networks

Secure Efficient Routing Based on Network Coding in the Dela...

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2014 IEEE 5th International Conference on Software Engineering and Service Science

作者： Jianmin Bao Shu Zhang Junjie Zhang Kun Wang Haifeng Hu Key Lab of Broadband Wireless Communication and Sensor Network Technology （Nanjing Univ. of Posts and Telecommunications） Ministry of Education Nanjing University of Posts and Telecommunications

The Delay/Disruption Tolerant network（DTN） is characterized with long delay,high bit-error rate,intermittent connectivity and frequent *** to this,network coding is introduced to improve its transmission performance *** DTN routing algorithms based on network coding have been ***,they are susceptible to various malicious *** this paper,we propose a new kind of networking scheme suitable to the DTN,which can resist the eavesdropping attacks to a certain ***,we establish a DTN network model based on the packet path optimization allocation algorithm and redefine the packet format to meet the algorithm ***,to resist the dropping attacks,the source node dynamically adds redundancy factors at the certain *** the pollution attacks and the data tampering attacks can almost be resisted by means of mutual authentication between intermediate *** approach avoids the traditional anti-tampering attack algorithm over-reliant on the source *** security analysis and simulation results show that our scheme can effectively resist the joint attacks and optimize the network performance.

关键词： delay tolerant networks（DTNs） network coding joint-attack

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Power allocation optimization in MC-NOMA systems for maximizing weighted sum-rate 24

Power allocation optimization in MC-NOMA systems for maximiz...

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24th Asia-Pacific Conference on communications, APCC 2018

作者： Chen, Ruilu Wang, Xiaoming Xu, Youyun School of Telecommunication and Information Engineering Nanjing Univ. of Posts and Telecom. Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing Univ. of Posts and Telecom. Nanjing China National Engineering Research Center of Comm. and Network Nanjing Univ. of Posts and Telecom. Nanjing China

ISBN: (纸本)9781538669280

In this paper, we investigate a power allocation scheme in downlink multi-carrier non-orthogonal multiple access (MC-NOMA) systems for maximizing weighted sum-rate. Taking user-priority into account, we add the weighting factors into the formulated optimization problem. Firstly, we give sufficient and necessary concavity conditions that should be satisfied by the proposed weighted sum-rate maximization problem. Then, for more generally non-concave case, we use a first order approximation to convert the optimization problem and provide an iterative power allocation algorithm to find the globally optimal solution. Simulation results show that our proposed algorithm is superior to orthogonal frequency division multiple access (OFDMA) scheme and average power allocation scheme. © 2018 IEEE.

关键词： Frequency division multiple access

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MPLB: A Load Balance Scheme of Joint Resource Scheduling in Heterogeneous wireless network

MPLB: A Load Balance Scheme of Joint Resource Scheduling in ...

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International Conference on Cyber-Enabled Distributed Computing and Knowledge Discovery, CyberC

作者： Xiaoyong Lin Pengwei Yin Yun Xia Yang Yu Tingting Qiu Xiaoming Wang Lixiang Li Key Lab of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing China College of Communication & Information Engineering Nanjing University of Posts and Telecommunications Nanjing China

A user terminal with multi-mode wireless interface is always located its position in the covered area of heterogeneous wireless network (HWN), there are too many algorithms about vertical handover (VHO) of multiple attributes decision making (MADM) network selections about HWN. According the analysis of current applications of wireless service, regular service has been classified into four kinds, including voice, video, small data and big data, and the proportions of wireless video and big data service may acquire an unavailable bandwidth for each individual wireless station, which will lead to a heavy load and a lower satisfaction rate. A multiple properties load balance (MPLB) scheme is proposed to solve this joint resource scheduling(JRS) problem properly, MPLB scheme first gave an enhanced architecture including the JSR sub-layer, then model of MPLB is established from the candidate wireless network, five aggregated network performance properties have been defined mathematically, the candidate of best grey relational coefficients (GRC) of grey relational analysis(GRA) algorithm is optimally selected as the final executable scheme, after the description of a general flowchart of MPLB scheme. The simulation results proved the MPLB scheme has a more stable load balance effects than those of VHO, so did most users of MPLB gain higher satisfaction rate, slightly different with the four kinds of service. It can be concluded theoretically that the MPLB scheduling scheme could achieve both the load balance on the service providers side and the increased quality of experience of satisfaction rate on the wireless user side, which would bring out some new thoughts in the future user centric network.

关键词： Distributed computing Knowledge discovery

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Dynamical QoS self-configuration approach of cognitive networks based on end-link cooperation policy

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Journal of Computational Information Systems 2012年第11期8卷 4685-4693页

作者： Qi, Jin Zhang, Shunyi Sun, Yanfei Key Lab. of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing University of Posts and Telecommunications Nanjing 210003 China Institute of Information and Network Technology Nanjing University of Posts and Telecommunication Nanjing 210003 China

To solve the problem of rapid QoS declining under network situation as well as improve the judging and dynamical adjusting ability that network system towards user QoS, in this paper, we proposed a dynamical self-configuration approach for guaranteeing QoS in cognitive networks (CNs). Through utilizing the active property of CNs while introducing end-link cooperation policy based on decisionmaking, the user priority has been determined and dynamically corrected. The simulation result represents that the proposed approach has better performance than traditional best of effort service, enabling to guarantee the user QoS under congestion status effectively. © 2012 Binary Information Press.

关键词： Quality of service

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Cognitive networks multi-constraint QoS routing algorithm based on autonomic ant colony algorithm

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Journal of Computational Information Systems 2012年第8期8卷 3429-3436页

作者： Qi, Jin Zhang, Shunyi Sun, Yanfei Key Lab. of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing 210003 China Institute of Information and Network Technology Nanjing University of Posts and Telecommunication Nanjing 210003 China

This paper focused on the study of cognitive networks (CNs) oriented multi-parameter constraint Quality of Service (QoS) routing optimization. With the foundation of CNs multi-parameter QoS routing requirement, referring to the shortcomings of basic ant colony algorithm, we brought improvements to the four aspects of pheromone initialization, pheromone evaporation factor adjustment, pheromone update method and state transition rules, proposed the CNs multi-constraint QoS routing algorithm based on autonomic ant colony (AAC) algorithm. The simulation result represents that the proposed algorithm has relatively good optimization ability and fast convergence speed, can effectively solving the multi-constraint QoS routing problem faced by CNs. © 2012 Binary Information Press.

关键词： Cost functions

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Secure beamformer design for cognitive satellite terrestrial networks 4

Secure beamformer design for cognitive satellite terrestrial...

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4th IEEE International Conference on Computer and communications, ICCC 2018

作者： Yin, Chunyan Lin, Zhi Tao, Xiangshuai Ouyang, Jian Lin, Min Panagopoulos, Athanasios D. Ministry of Education Nanjing University of Posts and Telecommunications Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing China College of Communications Engineering Army Engineering University of PLA Nanjing China Nanjing Institute of Telecommunication Technology Nanjing China School of Electrical and Computer Engineering National Technical University of Athens Zografou15780 Greece

ISBN: (纸本)9781538683392

This paper proposes a beamforming (BF) scheme based on multi-objective optimization (MOO) for a cognitive satellite-terrestrial network (CSTN), where the eavesdroppers (Eves) attempt to intercept the private message conveyed to an intended user. By considering that the maximization of achievable secrecy rate (ASR) and the minimization of transmit power can not be achieved simultanesouly, we adopt artificial noise (AN) and apply the weighted Tchebycheff approach to formulate a multi-object optimization problem. Then, by introducing several auxiliary variables, applying semidefinite programming (SDP) and means of Taylor approximation, the original nonconvex MOO problem is transformed into a convex one with a series of linear constraints, and the BF weight vector and AN vector can be obtained. Finally, simulation results are given to illustrate the tradeoff between the conflicting objectives and the superiority of the proposed algorithm in comparison with the commonly used schemes. © 2018 IEEE.

关键词： Beamforming

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