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IEEE Globecom Workshops

作者： Yueyue Zhang Yunchi Shi Fei Shen Yihuan Pang Feng Yan Lianfeng Shen Shanghai Aerospace Electronic Technology Institute Shanghai China School of Information Science and Engineering Southeast University Jiangsu P. R. China Key Lab for Wireless Sensor Network and Communication Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences China

ISBN: (数字)9781728109602

ISBN: (纸本)9781728109619

Due to the frequency reuse in 5G enhanced satellite communications, advanced spectrum management would be acquired to improve the spectrum efficiency, with the interference mitigation caused by the frequency conflict in the manner of spectral sharing. To this end, cognitive radio (CR) has brought into the widespread attention, which aims at detection of spectrum holes by using the information collected from the secondary users (SUs). Specifically, considering the characteristics of satellite channels, the detection of spectrum holes would be more difficult in high dynamic situation. In this paper, we propose an efficient spectrum sensing scheme by taking advantage of the cooperation of satellites and base stations. Firstly, each base station (BS) receives the sensing information collected by its associated SUs. Then, a channel estimation algorithm based on fuzzy neutral network (FNN) is designed with the real-time sampling and historical data stored at BS. After that, the optimal probability of detection can be determined using fuzzy inference system (FIS) with the available sensing set. Additionally, the cooperative spectrum sensing results would be uploaded to the satellites, providing information for the further frequency allocation at the satellites' side. Finally, simulation results reveal the performance gain of the proposed algorithm in terms of the detection probability of spectrum hole.

关键词： sensors Satellite broadcasting Satellites Fuzzy neural networks Channel estimation 5G mobile communication

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Three-step three-party quantum secure direct communication

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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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Optical encryption scheme based on ghost imaging with disordered speckles

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Chinese Physics B 2017年第5期26卷 160-164页

作者：张玉东赵生妹 Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Laboratory of Broadband Wireless Communication and Sensor Network Technology Ministry of Education Nanjing 210003 China

An optical encryption scheme based on a ghost imaging system with disordered speckles is proposed to obtain a higher security with a small key. In the scheme, Alice produces the random speckle patterns and obtains the detection results with the help of a computational ghost imaging（CGI） system. Then Alice permutes the order of the random speckle patterns and shares the permutation sequence as a secure key to the authorized users. With the secure key, Bob could recover the object with the principle of the CGI system, whereas, the unauthorized users could not obtain any information of the object. The numerical simulations and experimental results show that the proposed scheme is feasible with a small key, simultaneously,it has a higher security. When the eavesdropping ratio（ER） is less than 40%, the eavesdropper cannot acquire any useful information. Meanwhile, the authorized users could recover completely with the secure key.

关键词： ghost encryption secure speckle recover authorized disordered users reconstructed PSNR

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Multidimensional Speaker Information Recognition based on Proposed Baseline System 2

Multidimensional Speaker Information Recognition based on Pr...

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2017 IEEE 第2届先进信息技术,电子与自动化控制国际会议(IAEAC 2017)

作者： Shan Li Longting Xu Zhen Yang Broadband Wireless Communication and Sensor Network Technology Key Lab.Nanjing University of Posts and Telecommunications Institute for Infocomm Research ASTAR

Traditional speech-related identity recognition commonly pays attention to individual aspect of speech signals but in reality, the speech signals are made up of semantics, speaker dependent features,

ISBN: (纸本)9781467389808

Traditional speech-related identity recognition commonly pays attention to individual aspect of speech signals but in reality, the speech signals are made up of semantics, speaker dependent features,

关键词： Speech recognition Speech Feature extraction Support vector machines Emotion recognition Training Mel frequency cepstral coefficient

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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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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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Research on Path Selection for Space network Based on Fuzzy Neural network

Research on Path Selection for Space Network Based on Fuzzy ...

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International Conference on wireless communications and Signal Processing (WCSP)

作者： Yueyue Zhang Yunchi Shi Yihuan Pang Fei Shen Feng Yan Lianfeng Shen School of Information Science and Engineering Southeast University Nanjing Jiangsu P. R. China Shanghai Aerospace Electronic Technology Institute Shanghai China Key Lab for Wireless Sensor Network and Communication Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences China

With the development of space communication technology, space network is gradually enhanced by distributed spacecraft. This novel architecture of space network brings new challenges on self-organization and self-adaptation to inter spacecraft communication and packet routing From the perspective of delay tolerant network. In This paper, we propose an efficient and flexible routing algorithm by taking consideration of the constraint of the limited payload resource. In order to meet the requirement of complex interactive information exchanged among the spacecraft, a path selection algorithm is designed based on cascade fuzzy neural network (FNN) scheme, which mainly consists of a FNN processing module with four parts, ie. fuzzification, inference, defuzzification and rule database. Therefore, the information concerning the relative movement velocity, distance and storage capacity of each satellite can be formulated as a multidimensional vector to describe the characteristics of the space network. Additionally, the stability of each link could be derived via the first-level FNN, and then the probability of successful transmission measuring each link would be obtained through the second-level FNN. Finally, the performance of the proposed algorithm is analyzed and verified by the simulation.

关键词： Fuzzy neural networks Space vehicles Routing Heuristic algorithms Encoding Convolutional codes Decoding

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QoE-driven distributed media services in D2D communications underlaying cellular networks

QoE-driven distributed media services in D2D communications ...

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2017 IEEE International Conference on communications Workshops, ICC Workshops 2017

作者： Chen, Mingkai Lei, Wang Chen, Jianxin Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education China

ISBN: (纸本)9781509015252

Device-to-device (D2D) communication has been widely studied to improve network performance and been considered as a potential technological component for the next generation communication. As Quality of Experience (QoE) is the major determining factor for the media service, we aim at promoting user's QoE Mean of Score (MOS) value for dynamic cellular networks. In this paper, we focus on the problem of heterogeneous media service distribution in D2D communications underlaying cellular networks. Firstly, we propose an innovative distributed media service scheme based on QoE models that jointly solve the massive media content dissemination issue for cellular networks. Moreover, our work maximizes users' QoE satisfaction by jointly considering media-aware, popularity function and priority function. Then, we propose a novel resource allocation algorithm based on the popularity function to optimize the total users' QoE satisfaction and avoid the influence of D2D interference. Numerical simulation results demonstrate the effectiveness of our proposed schemes. © 2017 IEEE.

关键词： Quality of service

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Energy Efficiency Optimization Based on Context Awareness in Wearable Computing

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Procedia Computer Science 2018年 129卷 291-297页

作者： Feng Tian Yongan Guo Wei Liu Dapeng Li Zhen Yang Key Lab of Broadband Wireless Communication and Sensor Network Technology (Nanjing University of Posts and Telecommunications) Ministry of Education Nanjing 210003 China National Mobile Communications Research Laboratory Southeast University Nanjing 210096 China

The motion capture system of the wireless wearable device can achieve identification and classification of human motion through various classifiers, but wireless data transmission consumes most of the energy of the sensor node. An adaptive wireless transmission control algorithm based on context awareness is proposed realize energy efficiency optimization based on single classifier and multiple classifiers fusion. Firstly, adaptive wireless transmission control method based on fixed single classifier can effectively improve the overall energy efficiency under the limit of classification accuracy. Secondly, adaptive transmission control method of multi-classifier fusion is proposed with adjusting decision threshold based on various classifiers and their characteristics. The experimental results validate our proposed algorithm.

关键词： Wearable computing energy efficiency adaptive transmission control context awareness multiple classifiers fusion

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Hybrid Indoor Localization Method Based on Signal Subspace Fingerprint Database 17

Hybrid Indoor Localization Method Based on Signal Subspace F...

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2017 17th IEEE International Conference on communication technology (ICCT 2017)

作者： Weigang Wang Wenrui Wang Kexue Sun School of Electronic Science and Engineering Nanjing University of Posts and Telecommunications Key Lab of Broadband Wireless Communication and sensor network technology ministry of education

ISBN: (纸本)9781509039456;9781509039449

To solve the localization problem of multipath propagation in complex indoor circumstance, a localization method of signal subspace matching based on fingerprint database is proposed by using small antenna array in the indoor environment. Compared to the RSSI, the signal subspace fingerprint can obtain better effect by utilizing more space information. The received signal from each array is firstly processed with self-correlation and it's eigenvalue decomposed to create the signal subspace fingerprint. Location is then determined by the smallest angle between the received signal subspace and the fingerprint database. Simulation results show that the proposed algorithm has made a great improvement in localization accuracy.

关键词： indoor localization fingerprint database subspace matching hybrid localization

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