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2015 IEEE 16th International Conference on communication technology(ICCT 2015)

作者： Xiaofeng Xu Caowei Wang Science and Technology on Communication Information Security Control Laboratory Beijing University of Posts and Telecommunications

Interference alignment(IA) is a promising technique to effectively mitigate interference in wireless communication *** this paper,a novel IA based scheme is proposed,which is jointed design of transmit precoding matrices and receive beam forming matrices for the three-cell multiple-input multiple-output(MIMO).Gaussian interfering broadcast channels(MIMO-IFBC) with constant channel between each node,where each base station(BS) is equipped with M antennas,each mobile station(MS) is equipped with N antennas on the cell boundary,and each BS sends d data streams to each user in its *** corresponds to a down link scenario for cellular networks,where K users with the user cooperation in each *** is also analytically shown that total 3Kd degrees of freedom(Do F)is achievable if M = N≥*** simulations demonstrate the sum-rate of our proposed scheme also out performs those of conventional techniques,especially in the high signal-to-noise ratio(SNR)regime.

关键词： Interference Alignment Degrees of Freedom Multi-User MIMO Eigenvector Solution

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A novel waveform selection method for cognitive radar during target tracking based on the wind driven optimization technique

A novel waveform selection method for cognitive radar during...

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IET International Radar Conference 2015

作者： Zhang, Zhenkai Salous, Sana Zhu, Jiehao Song, Dengxiong College of Electronic Information JiangSu University of Science and Technology Zhenjiang China Centre for Communication Systems Durham University Durham United Kingdom Science and Technology on Electronic Information Control Laboratory Chengdu China

ISBN: (纸本)9781849199940

In recent years, the cognitive radar (CR) with waveform diversity has exhibited significant performance improvements over the traditional fixed waveform radar and has become an area of vigorous research and development. A novel waveform selection strategy based on wind driven optimization (WDO) technique is proposed in this paper. Firstly, the predicted tracking Cramér-Rao Lower Bounds (CRLB) model is built based the Interacting Multiple Model Particle Filter (IMMPF) method. Then the waveform selection model between the waveform parameters and the tracking performance is introduced. Finally, the WDO technique is used to minimize the predicted CRLB for the waveform selection. The tracking accuracy is demonstrated in the Monte Carlo simulations. The results are validated through the comparison with other methods.

关键词： Target tracking

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Uncertain dynamic skyline queries for uncertain databases

Uncertain dynamic skyline queries for uncertain databases

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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： ZhiBang Yang XiaoNiu Yang Xu Zhou Science and Technology on Communication Information Security Control Laboratory Zhejiang Jiaxing 314001 China Science and Technology on Communication Information Security Control Laboratory Zhejiang Jiaxing China College of Mathematics and Information Engineering Jiaxing University Zhejiang Jiaxing China

ISBN: (纸本)9781467376839

In this paper, we research the relationship between the probabilistic products and customer preferences, which has not been studied before. In order to find out products which can meet a customer's maximum demand, we present an uncertain dynamic skyline (UDS) query, and propose effective pruning strategies to reduce the search space of the UDS query processing. In addition, effective algorithms are presented by integrating the proposed pruning strategies. Extensive experiments illustrate the efficiency and effectiveness of our proposed algorithms with a variety of experiments settings.

关键词： Probabilistic logic Vehicle dynamics Heuristic algorithms Vehicles Databases information security Context

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A Compact Complex-valued MIMO Detector and its FPGA Implementation

A Compact Complex-valued MIMO Detector and its FPGA Implemen...

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2015 IEEE 16th International Conference on communication technology(ICCT 2015)

作者： Yu Han Science and Technology on Communication Information Security Control Laboratory No.36 Research Institute of CETC

This paper presents a compact and efficient hard output MIMO detection and its FPGA implementation. Our method is based on a complex-valued decomposition and a highly compact expansion, which needs least number of visited nodes and a half of tree depth than previously published K-best designs. We propose a fully pipelined architecture,combining with resource sharing to realize the ***, our complex-valued MIMO detector is implemented and validated on a Xilinx FPGA device for a 16-QAM modulation and 4×4 antenna *** implementation results show that the proposed detector is hardware efficient and has a 395 Mbps throughput with about 0.2dB performance loss.

关键词： MIMO Hard detection FPGA implementation Pipelined architecture

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Research and Software Realization of Broadband Multi-channel and Multi-rate Signal Demodulation

Research and Software Realization of Broadband Multi-channel...

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2015 IEEE 16th International Conference on communication technology(ICCT 2015)

作者： Wei Shi Jinfang Meng Science and Technology on Communication Information Security Control Laboratory No.36 Research Institute of CETC

Demodulation of multi-channel and multi-rate broadband signal is an important technology in digital communication and reconnaissance processing. Based on the design concept of software radio, after the study of symbol synchronization and carrier synchronization technology in demodulation process, this paper proposed a automatic demodulation scheme of multi-channel and multi-rate broadband signal. According to the AltiVec technology, the CACHE technology, the accelerating optimization softwarein of multi-core collaborative stream processing, this demodulation algorithm is realized on the digital processing platform of T4240 multicore processors. Finally QPSK signal is taken as an example to complete the experiment and result *** results show that the performance of demodulation algorithm is higher, and the method of multi-channel and multi-rate broadband signal demodulation in software way has the advantages that the software is easier to implement, the algorithm is easier to upgrade and maintain, the parameters of demodulation signal are more easily to be configurated. According to optimizing processing, the real-time processing ability of the algorithm is stronger, and it can meet the demodulation performance requirements of more channel and wider broadband signal.

关键词： Symbol synchronization Carrier synchronization Software radio T4240 AltiVec

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Study on Network Topology Evolution Model and Strategies in Hostility Surroundings

Study on Network Topology Evolution Model and Strategies in ...

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2015 IEEE 16th International Conference on communication technology(ICCT 2015)

作者： Hong-wa Yang Min Wang Science and Technology on Communication Information Security Control Laboratory No.36 Research Institute of CETC

Multi-hop wireless network is one of the most important military communication networks. In hostility environment, the network topology evolution is driven by both attacker and defender. In order to reveal the law of network topology evolution, the network architecture is analyzed at first. Secondly, the network mathematic model and dynamic topology evolution model are established. After that the validity evaluation rules of network topology are proposed. Finally, some offensive and defensive strategies are given. The proposed model and strategies can be used in both network attack and defending.

关键词： Multi-hop wireless network Topology evolution model Network attack and defend strategies

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A Kind of Better Adjacent Channel Suppression Multiple Frequency Shift Keying Signal Simulation Method Based on MATLAB

A Kind of Better Adjacent Channel Suppression Multiple Frequ...

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2015 IEEE 16th International Conference on communication technology(ICCT 2015)

作者： Huan Li Wenhua Ye No.36 Research Institute of CETC Science Technology on Communication Information Security Control Laboratory

Frequency shift keying（FSK） modulation function in MATLAB without filter function, leading to poor adjacent channel suppression, which causes aliasing after a non-linear device easily. Based on FSK modulation signal generation principle, designing a better adjacent channel suppression function in this paper, which verified by demodulating through Agilent’s vector signal analyzer（89600S）, this function gets achieved more satisfactory results in the application of semi physical simulation.

关键词： Frequency shift keying（FSK） Modulation Adjacent channel suppression

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Profiling and identifying users' activities with network traffic analysis

Profiling and identifying users' activities with network tra...

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IEEE International Conference on Software Engineering and Service sciences (ICSESS)

作者： Ma Tao Ye Chun Ming Chen Juan Science and Technology on Communication Information Security Control Laboratory Jiaxing China Army Officer Academy Hefei China

ISBN: (纸本)9781479983544

Traffic identification technique is used for classification of different network protocols and applications even with detection of users' network activities. In this paper, we conduct our study on some typical users' network activities and present a traffic identification method to describe the feature about users' behaviors. We convert users' network activities information into different sequences with frame size and inter-arrival time just like HMM model does. Then we use latent dirichlet allocation model to extract potential characterization from these activity sequences. We use some machine learning algorithms to classify different activities in the data, and we suggest a method to evaluate the mixed activities within a sequence. Our research shows that it is possible to distinguish exact users' on-line activities without inspection to packet payloads, and users' privacy may need more protection against traffic analysis.

关键词： Hidden Markov models Protocols Entropy Payloads Computers Accuracy Feature extraction

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A new important-place identification method

A new important-place identification method

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International Conference on Computer and communications (ICCC)

作者： Chun-lai Ma Tao Ma Hong Shan Electronic Engineering Institute Hefei China Science and Technology on Communication Information Security Control Laboratory Hefei China

ISBN: (纸本)9781467381277

For the problem that the location of LBSN users was sparse because of it was updated sporadically. An important place identification method was studied by improving the clustering algorithm. Firstly, a velocity pruning algorithm was applied to remove interference points from source data. Secondly, clustering algorithm based on density peak named CFSFDP was selected. To solve the problem that it is unable to decide the cluster number with CFSFDP, an improved algorithm was presented. With a cluster center automatic choosing strategy, the algorithm searched for the `turning points' with the trends of cluster center weights changing. Then we could regard a set of points which weight is bigger than turning points' as cluster center. As a result, the error brought by ruling in the Decision Graph could be avoided with the strategy. Thirdly, reverse geocoding technology was applied to translate coordinate in semantic place. Check-in data of Foursquare user was set as an example in experiment, the result show that the improved algorithm had higher accuracy rate and lower computation compared to CFSFDP and DBSCAN. It also proved that the feasibility and effectiveness of the method proposed in the paper.

关键词： Clustering algorithms Algorithm design and analysis Turning Market research Social network services Global Positioning System Target tracking

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Global, regional, and national sex-specific burden and control of the HIV epidemic, 1990–2019, for 204 countries and territories: the Global Burden of Diseases Study 2019

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The Lancet HIV 2021年第10期8卷 e633-e651页

作者： Jahagirdar, Deepa Walters, Magdalene K. Novotney, Amanda Brewer, Edmond D. Frank, Tahvi D. Carter, Austin Biehl, Molly H. Abbastabar, Hedayat Abhilash, E.S. Abu-Gharbieh, Eman Abu-Raddad, Laith Jamal Adekanmbi, Victor Adeyinka, Daniel Adedayo Adnani, Qorinah Estiningtyas Sakilah Afzal, Saira Aghababaei, Soodabeh Ahinkorah, Bright Opoku Ahmad, Sajjad Ahmadi, Keivan Ahmadi, Sepideh Ahmadpour, Ehsan Ahmed, Muktar Beshir Rashid, Tarik Ahmed Salih, Yusra Ahmed Aklilu, Addis Akram, Tayyaba Akunna, Chisom Joyqueenet Al Hamad, Hanadi Alahdab, Fares Alanezi, Fahad Mashhour Aleksandrova, Ekaterina A. Alene, Kefyalew Addis Ali, Liaqat Alipour, Vahid Almustanyir, Sami Alvis-Guzman, Nelson Ameyaw, Edward Kwabena Amu, Hubert Andrei, Catalina Liliana Andrei, Tudorel Anvari, Davood Arabloo, Jalal Aremu, Olatunde Arulappan, Judie Atnafu, Desta Debalkie Quintanilla, Beatriz Paulina Ayala Ayza, Muluken Altaye Azari, Samad Darshan, B.B. Banach, Maciej Bärnighausen, Till Winfried Barra, Fabio Barrow, Amadou Basu, Sanjay Bazargan-Hejazi, Shahrzad Belay, Habtamu Gebrehana Berheto, Tezera Moshago Bezabhe, Woldesellassie Mequanint Bezabih, Yihienew Mequanint Bhagavathula, Akshaya Srikanth Bhardwaj, Nikha Bhardwaj, Pankaj Bhattacharyya, Krittika Bibi, Sadia Bijani, Ali Bisignano, Catherine Bolarinwa, Obasanjo Afolabi Boloor, Archith Boltaev, Azizbek A. Briko, Nikolay Ivanovich Buonsenso, Danilo Burkart, Katrin Butt, Zahid A. Cao, Chao Charan, Jaykaran Chatterjee, Souranshu Chattu, Soosanna Kumary Chattu, Vijay Kumar Choudhari, Sonali Gajanan Chu, Dinh-Toi Couto, Rosa A.S. Cowden, Richard G. Dachew, Berihun Assefa Dadras, Omid Dagnew, Amare Belachew Dahlawi, Saad M.A. Dai, Xiaochen Dandona, Lalit Dandona, Rakhi das Neves, José Degenhardt, Louisa Demeke, Feleke Mekonnen Desta, Abebaw Alemayehu Deuba, Keshab Dhamnetiya, Deepak Dhungana, Govinda Prasad Dianatinasab, Mostafa Diaz, Daniel Djalalinia, Shirin Doan, Linh Phuong Dorostkar, Fariba Edinur, Hisham Atan Effiong, Andem Eftekharzadeh, Sahar El Sayed Zaki, Maysaa Elayedath, Rajesh Elhadi, Institute for Health Metrics and Evaluation University of Washington Seattle WA United States Department of Health Metrics Sciences School of Medicine University of Washington Seattle WA United States Division of Allergy and Infectious Diseases University of Washington Seattle WA United States Department of Global Health University of Washington Seattle WA United States School of Social Work University of Washington Seattle WA United States Department of Medicine University of Washington Seattle WA United States Vagelos College of Physicians and Surgeones Columbia University Medical Center New York NY United States Division of Data Analytics and Delivery for Impact WHO Geneva Switzerland Advanced Diagnostic and Interventional Radiology Research Centre Tehran University of Medical Sciences Tehran Iran Multiple Sclerosis Research Centre Tehran University of Medical Sciences Tehran Iran School of Public Health Tehran University of Medical Sciences Tehran Iran Department of Epidemiology and Biostatistics Tehran University of Medical Sciences Tehran Iran Paediatric Chronic Kidney Disease Research Centre Tehran University of Medical Sciences Tehran Iran Department of Psychiatry Tehran University of Medical Sciences Tehran Iran Metabolomics and Genomics Research Centre Tehran University of Medical Sciences Tehran Iran Sina Trauma and Surgery Research Centre Tehran University of Medical Sciences Tehran Iran Research Centre for Immunodeficiencies Tehran University of Medical Sciences Tehran Iran Non-Communicable Diseases Research Centre Tehran University of Medical Sciences Tehran Iran Department of Botany Sree Narayana Guru College Chelannur Kozhikode India Clinical Sciences Department University of Sharjah Sharjah United Arab Emirates Mass Communication Department University of Sharjah Sharjah United Arab Emirates Department of Health-Care Policy and Research Weill Cornell Medical College in Qatar Doha Qatar Department of Population Medicine Ca

Background: The sustainable development goals (SDGs) aim to end HIV/AIDS as a public health threat by 2030. Understanding the current state of the HIV epidemic and its change over time is essential to this effort. This study assesses the current sex-specific HIV burden in 204 countries and territories and measures progress in the control of the epidemic. Methods: To estimate age-specific and sex-specific trends in 48 of 204 countries, we extended the Estimation and Projection Package Age-Sex Model to also implement the spectrum paediatric model. We used this model in cases where age and sex specific HIV-seroprevalence surveys and antenatal care-clinic sentinel surveillance data were available. For the remaining 156 of 204 locations, we developed a cohort-incidence bias adjustment to derive incidence as a function of cause-of-death data from vital registration systems. The incidence was input to a custom Spectrum model. To assess progress, we measured the percentage change in incident cases and deaths between 2010 and 2019 (threshold >75% decline), the ratio of incident cases to number of people living with HIV (incidence-to-prevalence ratio threshold <0·03), and the ratio of incident cases to deaths (incidence-to-mortality ratio threshold <1·0). Findings: In 2019, there were 36·8 million (95% uncertainty interval [UI] 35·1–38·9) people living with HIV worldwide. There were 0·84 males (95% UI 0·78–0·91) per female living with HIV in 2019, 0·99 male infections (0·91–1·10) for every female infection, and 1·02 male deaths (0·95–1·10) per female death. Global progress in incident cases and deaths between 2010 and 2019 was driven by sub-Saharan Africa (with a 28·52% decrease in incident cases, 95% UI 19·58–35·43, and a 39·66% decrease in deaths, 36·49–42·36). Elsewhere, the incidence remained stable or increased, whereas deaths generally decreased. In 2019, the global incidence-to-prevalence ratio was 0·05 (95% UI 0·05–0·06) and the global incidence-to-mortality ratio was

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