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检索条件"机构=Science and Technology on Communication Information Security Control Laboratory NO.36"

共 353 条记录，以下是241-250 订阅

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A Study on the Influence of Bit Error Ratio against Jamming Signal Ratio under Different Channel Jamming

A Study on the Influence of Bit Error Ratio against Jamming ...

引用

International Symposium on Computational Intelligence and Design, ISCID

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

ISBN: (纸本)9781509035595

The performance of digital communication systems, depending on the signal modulation and demodulation. In this paper, loading several different jamming pattern to different digital communication modulation system models, the bit error rate(BER) under different conditions of jamming signal ratio(JSR) was in statistics through a large number of statistical simulation, the graph is giving to illustrate the comparative relationship of JSR and BER, the comparative Analysis under different channel jamming pattern is giving to illustrate the influence for different digital communication systems.

关键词： Jamming Modulation Digital communication Analytical models Receivers Rayleigh channels Lead

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Modified CORDIC Algorithm for Computation of Arctangent with Variable Iterations

Modified CORDIC Algorithm for Computation of Arctangent with...

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2016 IEEE 13th International Conference on Signal Processing（ICSP2016）

作者： Huijie Zhu Yizhou Ge Bin Jiang Science and Technology on Communication Information Security Control Laboratory No.36 Research Institute of China Electronics Technology Group Corporation

In this paper, a modified CORIDC algorithm for computation of arctangent is presented. Unlike the conventional CORDIC algorithm which has constant number of iterations, the proposed algorithm calculates the nearest predefined angle to the input phase at the beginning of every iteration and then rotates by an optimal angle. As it has variable iterations, the novel rotation strategy provides faster convergence speed that reduces the number of iterations with respect to the previous approaches. Further, the performance of the proposed algorithm is improved when compared with that of the conventional one at cost of the same maximum shift number. With a number of simulation experiments, the performance of the proposed algorithm is validated by the numerical results.

关键词： CORDIC Arctangent Vectoring mode

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Post-Synthesis Simulation Based on None Project Mode of Vivado

Post-Synthesis Simulation Based on None Project Mode of Viva...

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International Conference on information science and control Engineering (ICISCE)

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

ISBN: (纸本)9781509025367

Xilinx FPGA design tools Vivado support project based mode and none project mode, the project based mode is used by most of the designs with powerful graphical interface IDE, but none project mode also has its unique advantages and magical effect, this paper presents a method of post-synthesis simulation based on none project mode of Vivado, which can find errors early, such as the simulation result of module (pre-synthesis) is correct, but there are errors when added to compile the project or on board debugging, thus this method can save development time and improve work efficiency.

关键词： Load modeling Field programmable gate arrays Simulation Debugging Clocks Hardware design languages Data models

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Individual communication Transmitter Identification Using Correntropy-based Collaborative Representation

Individual Communication Transmitter Identification Using Co...

引用

International Congress on Image and Signal Processing, BioMedical Engineering and Informatics

作者： Ying-Ke Lei Science and Technology on Communication Information Security Control Laboratory

ISBN: (纸本)9781509037117

In this paper, an efficient radio transmitter identification method is proposed for identifying radio transmitters. The square integral bispectra (SIB) transformation is firstly utilized to extract the features from the raw signal data of radio transmitters, which recasts the problem of communication transmitter identification into the form of measuring similarity between points in its metric space. Then we use the collaborative representation framework as a platform to develop a novel classification model, correntropy-based collaborative representation classifier (CECRC), for identifying different radio transmitters according to the similarity between the points in the SIB feature space. Extensive experimental results on real-world data sets demonstrate the effectiveness of our proposed method.

关键词： active algorithm individual communication transmitter identification correntropy collaborative representation

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A Method of Individual Radio Transmitter Identification Based on Collaborative Representation

A Method of Individual Radio Transmitter Identification Base...

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2016 IEEE information technology,Networking,Electronic and Automation control Conference(ITNEC 2016)

作者： Zhe Tang Ying-Ke Lei Electronic Engineering Institute Science and Technology on Communication Information Security Control Laboratory

ISBN: (纸本)9781467391955

To make use of the correlation among the samples, a method of individual radio transmitter identification based on collaborative representation is put forward in this paper. Firstly, we extract the square integral bispectra(SIB)features to characterise the radio transmitters in the feature space. Secondly, based on collaborative representation, we compute the sparse coefficients with low computational complexity. At last, benefiting from the discrimination information of coefficient, the classifier is constructed for the final individual radio transmitter identification. On the actual collected FM radio dataset, the experimental results verify the effectiveness and robustness of our method.

关键词： individual radio transmitter identification collaborative representation sparse representation square integral bispectra

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A New Method of the Virtual TDOA Estimation for the Passive Radar Source Localization Based on PSAAA

A New Method of the Virtual TDOA Estimation for the Passive ...

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International Conference on Wireless communications and Signal Processing

作者： Pengwu Wan Zan Li Benjian Hao Boyang Liu Jianfeng Zhu State Key Laboratory of Integrated Services Networks Xidian University Science and Technology on Communication Information Security Control Laboratory

ISBN: (纸本)9781509028610

The passive synthetic aperture antenna array (P-SAAA) technology is inspired by the idea of synthetic aperture sonar and synthetic aperture radar, which is a new method used to the passive radar source localization using only one small aircraft. Virtual time difference of arrival (VTDOA) estimation is critical for the PSAAA technology, it is defined as the time difference of the radar pulse transmission from the radar source position to different virtual receivers, where the virtual receivers are the flight track position of the small aircraft at different flight time. In this paper, we present three different algorithms of curve fitting to approximate the main-beam pattern of the radar antenna, then the VTDOA can be estimated using the corresponding time of the peak of the curve. The simulation results show that the second-order polynomial of the least squares (LS) curve fitting algorithm is the optimal method to approximate the main beam pattern of the radar antenna at the receiver, which also is the optimal method to be used in the VTDOA estimation.

关键词： Passive Localization Virtual Time Differences of Arrival Passive Synthetic Aperture Antenna Array Curve Fitting Radar

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Study of Personal Location-Based State Distribution Inference

Study of Personal Location-Based State Distribution Inferenc...

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

作者： Tao Ma Chunlai Ma Juan Chen Science and Technology on Communication Information Security Control Laboratory Jiaxing China Electronic Engineering Institute Hefei China Army Officer Academy Hefei China

ISBN: (纸本)9781509051557

It is very important to study LBS (Location-based Service) personal location inference for the privacy protection and the value extraction of LBS big data. According to study the characteristics of the target user's state in day view belongs to Gaussian distribution, an effective method to infer the user's home and work location is proposed in the article. Experimental results show that the inference method based on the user's state distribution has the higher inference accuracy than the current inference method based on the frequency statistics.

关键词： Gaussian distribution Trajectory Data mining Probability distribution Inference algorithms Schedules Knowledge discovery

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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...

引用

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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Identifying most preferential skyline product combinations under price promotion

Identifying most preferential skyline product combinations u...

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International Conference on Fuzzy Systems and Knowledge Discovery (FSKD)

作者： ZhiBang Yang Xu Zhou Yifu Zeng Fei Zeng Yantao Zhou Science and Technology on Communication Information Security Control Laboratory Jiaxing Zhejiang China College of Information Science and Engineering Hunan University Changsha Hunan China College of Electrical and Information Engineering Hunan University Changsha Hunan China

ISBN: (纸本)9781509040940

The skyline query is a most useful tool to find out attractive products. However, it does little to help select the product combinations with the maximum discount rate. Motivated by this, we identify an interesting problem, a most preferential skyline product (MPSP) combination discovering problem, which is NP-hard, for the first time in the literature. This problem aims to report all skyline product combinations having the maximum discount rate. Since the exact algorithm for the MPSP is not scalable to large or high-dimensional datasets, we design an incremental greedy algorithm. The experiment results demonstrate the efficiency and effectiveness of the proposed algorithm.

关键词： Algorithm design and analysis Indexes Pipelines Heuristic algorithms Complexity theory Greedy algorithms Partitioning algorithms

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A Compact Complex-valued MIMO Detector and its FPGA Implementation

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

引用

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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