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第27届中国控制与决策会议

作者： Daqing Wu Li Liu Xiang Jian Gong Li Deng Key Laboratory of Intelligent Computing & Signal Processing Ministry of EducationAnhui University Computer Science and Technology Institute University of South China Glorious Sun School of Business and Management Dong Hua University

An efficient co-evolutionary multi-objective particle swarm optimizer named ECMPSO was *** uses dynamic multiple swarms to deal with multiple objectives,taking one objective is optimized by each swarm into account,and maintains diversity of new found non-dominated solutions via adopts a three-level particle swarm optimization(PSO) updating rule wherein the particles learn their experiences based on personal,neighborhood,and external *** prove the validity of the ECMPSO algorithm for solving multi-objective problems,some benchmark problems and one real-life problem are selected to validate the performance of the ECMPSO *** experiment results show that the ECMPSO algorithm is better in terms of search precision and convergence performance than other three algorithms from the literature.

关键词： Multi-objective Optimization,Particle Swarm Optimizer,Neighborhood Best Particle,Dynamic Swarms,Economic Environmental Dispatch

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Energy efficient feedback design for coordinated multi-point transmission in downlink

International Journal of Signal Processing, Image Processing...

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International Journal of signal processing, image processing and Pattern Recognition 2015年第6期8卷 155-166页

作者： Wang, Yi Hu, Yanjun Zhou, Yiqing Key Laboratory of Intelligent Computing and Signal Processing Ministry of Education Anhui University Hefei China School of Electronic Science and Technology Anhui University Hefei China Institute of Computing Technology Chinese Academy of Sciences Beijing China

Coordinated multi-point (CoMP) has been raised to increase the average cell throughput and the cell-edge user throughput. However, the energy consumption of mobile stations (MSs) is a key problem restricting the wide application of CoMP systems. Considering the energy consumption of feeding back channel state information (CSI) by MSs and the influence of CSI accuracy on the throughput of system, it is proposed to measure the relationship between feedback energy consumption and throughput with energy efficiency feedback utility (EEFU) function which can adapt to different application scenes by adjusting utilization coefficient. The feedback utilization of two precoders in CoMP systems is analyzed respectively, including the optimization allocation of feedback bits with utility function. The complete EEFU optimized expression and the optimizing flow path satisfying the actual application demands of CoMP systems are then derived. The simulation results illustrate the practicability and necessity of the EEFU function and verify the performance of EEFU with different precoders. © 2015 SERSC.

关键词： Energy efficiency

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A method for control of adaptation rate in acoustic feedback cancellation systems for hearing aids

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ICIC Express Letters 2015年第9期9卷 2505-2510页

作者： Wang, Xia Wang, Qingyun Liang, Ruiyu Tang, Guichen Zhao, Li Zou, Cairong Key Laboratory of Underwater Acoustic Signal Processing of Ministry of Education Southeast University No. 2 Sipailou Nanjing China School of Communication Engineering Nanjing Institute of Technology No. 1 Hongjing Road Jiangning Science Park Nanjing China

Adaptive filters such as the normalized least mean square algorithm are popularly used to deal with acoustic feedback problem in hearing aids. This algorithm has to compromise between fast convergence and low misalignment. In order to meet these conflictions, a method for control of adaptation rate in acoustic feedback cancellation systems is proposed. The adaptation rate is controlled by the update state of the filter. Different adaptation rates are employed in different update states which are classified into convergent state, transitional state and steady state. The performance of the proposed method is compared with the fixed step size Normalized Least Mean Square (NLMS), Variable Step Size Normalized Least Mean Square (VSS-NLMS) based on recursive error energy and VSS-NLMS based on estimated variances. Experimental results indicate that the proposed method has better performance than other algorithms in terms of spectral distortion, Perceptual Evaluation of Speech Quality (PESQ) and average misalignment in steady state. © ICIC International 2015.

关键词： Adaptive filters

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Downward spatially-scalable image reconstruction based on compressed sensing

Downward spatially-scalable image reconstruction based on co...

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作者： Zhu, Shuyuan Zeng, Bing Fang, Lu Gabbouj, Moncef Institute of Image Processing University of Electronic Science and Technology of China Chengdu China School of Information Science and Technology University of Science and Technology of China Hefei China Department of Signal Processing Tampere University of Technology Tampere Finland

ISBN: (纸本)9781479957514

According to the compressed sensing (CS) theory, we can sample a sparse signal at a rate that is (much) lower than the required Nyquist rate, while still enabling a nearly exact reconstruction. image signals are sparse when represented in a certain domain, and because of this, a large number of CS-based image sampling and reconstruction techniques have been developed recently. In this paper, we focus on the design of the downward spatially-scalable image reconstruction from the CS-sampled data. Traditional methods usually reconstruct an image whose size is the same as the original source image and then achieve the downward scalability through sub-sampling. In our proposed method, we unify these two steps into a single one and promise to deliver a much improved quality. © 2014 IEEE.

关键词： Compressed sensing

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Detecting Optic Disk Based on Structured Learning

Detecting Optic Disk Based on Structured Learning

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IEEE International Conference on Robotics and Biomimetics

作者： Zhun Fan Yibiao Rong Xinye Cai Wenji Li Huibiao Lin Zefeng Yu Jiewei Lu Key Laboratory of Digital Signal and Image Processing of Guangdong Provincial College of Engineering Shantou University. 515063 Shantou China College of Engineering Shantou University. 515063 Shantou China school of computer science and technology Nanjing University of Aeronautics and Astronautics Jiangsu China

ISBN: (纸本)9781467396769

Optic Disk (OD) detection plays an important role for fundus image analysis. In this paper, we propose an algorithm for detecting OD mainly based on a classifier model trained by structured learning. Then we use the model to achieve the edge map of OD. Thresholding is performed on the edge map to obtain a binary image. Finally, circle Hough transform is carried out to approximate the boundary of OD by a circle. The proposed algorithm has been evaluated on the public database and obtained promising results. The results (an area overlap and Dices coefficients of 0.8636 and 0.9196, respectively, an accuracy of 0.9770, and a true positive and false positive fraction of 0.9212 and 0.0106) show that the proposed method is a robust tool for the segmentation of OD and is very competitive with the stage-of-the-art methods.

关键词： algorithm detecting method

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Domain adaptation for video steganalysis against motion vector based steganography

Domain adaptation for video steganalysis against motion vect...

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2014 International Conference on Applied sciences, Engineering and technology, ICASET 2014

作者： Wang, Ke Ren Li, Wen Xiang National Key Laboratory of Science and Technology On Blind Signal Processing Chengdu China Zhengzhou Information Science and Technology Institute Zhengzhou China

ISBN: (纸本)9783038351849

Video steganalysis takes effect when videos corrupted by the target steganography method are available. Nevertheless, classical classifiers deteriorate in the opposite case. This paper presents a method to cope with the problem of steganography method mismatch for the detection of motion vector (MV) based steganography. Firstly, Adding-or-Subtracting-One (AoSO) feature against MV based steganography and Transfer Component Analysis (TCA) for domain adaptation are revisited. Distributions of AoSO feature against various MV based steganography methods are illustrated, followed by the potential effect of TCA based AoSO feature. Finally, experiments are carried out on various cases of steganography method mismatch. Performance results demonstrate that TCA+AoSO feature significantly outperforms AoSO feature, and is more favorable for real-world applications. © (2014) Trans Tech Publications, Switzerland.

关键词： Steganography

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Approaching the ideal quantum key distribution with two-intensity decoy states

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Physical Review A 2015年第2期92卷 022332-022332页

作者： Chun-Hui Zhang Sun-Long Luo Guang-Can Guo Qin Wang Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing 210003 China Academy of Mathematics and Systems Science Chinese Academy of Sciences 100190 Beijing China Key Laboratory of Quantum Information University of Science and Technology of China Hefei 230026 China

We present a scheme for the practical decoy-state quantum key distribution with heralded single-photon source. In this scheme, only two-intensity decoy states are employed. However, its performance can approach the asymptotic case of using infinite decoy states. We compare it with the standard three-intensity decoy-state method, and through numerical simulations, we demonstrate its significant improvement over the three-intensity method in both the final key rate and the secure transmission distance. Furthermore, when taking statistical fluctuations into account, a very high key generation rate can still be obtained even at a long transmission distance.

关键词： Quantum cryptography

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Wavelet sparse representation based beam-forming for ultrasound imaging: Theory and simulation

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Metallurgical and Mining Industry 2015年第9期7卷 777-781页

作者： Zhang, Qiong Shen, Minfen Li, Bin Cheng, Cheng College of Engineering Shantou University Shantou Guangdong China Guangdong Provincial Key Laboratory of Digital Signal and Image Processing Techniques Shantou Guangdong China Shantou Polytechnic Shantou Guangdong China Shantou Institute of Ultrasonic Instruments Co. Ltd. Shantou Guangdong China Dept of Intelligent Multimedia Technology Research Center Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing China

In this paper, a wavelet sparse representation based beamforming is proposed to improve the resolution and contrast of plane wave emission ultrasound imaging. First, the received signals are described as the convolution of the target scatterers with the point spread function of the system. And then, the wavelet sparse representation model is deduced according to the fact that the target scatterers can be sparse represented in wavelet domain. The proposed algorithm was tested with simulated ultrasound data in plane wave emission. And the results demonstrated that the resolution was clearly improved and contrast ratio gains of 9.8 dB, 4.3 dB and 3.7 dB were obtained compared to delay-and-sum beamformer, minimum variance beamformer and phase coherence factor, respectively.

关键词： Optical transfer function

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Secure transmission in multi-antenna hybrid satellite-terrestrial relay networks in the presence of eavesdropper

Secure transmission in multi-antenna hybrid satellite-terres...

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International Conference on Wireless Communications and signal processing (WCSP)

作者： Kang An Min Lin Tao Liang Jian Ouyang Can Yuan Yinbin Li College of Communications Engineering PLA University of Science and Technology Nanjing China National Mobile Communications Research Laboratory Southeast University Nanjing China Nanjing Telecommunication Technology Institute Nanjing China Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications Nanjing China Unit 95982 of PLA Kaifeng China

ISBN: (纸本)9781467376884

This paper investigates the secrecy capacity of a multi-antenna amplify-and-forward (AF) hybrid satellite-terrestrial relay netwrok (HSTRN), which consists of a satellite, a relay, a terrestrial destination and a terrestrial eavesdropper. Specifically, by employing a two-stage beamforming (BF) scheme, where the relay first adopts the maximal ratio combining (MRC) to receive the signal from satellite and then performs zero-forcing (ZF) to completely null the eavesdropper's signal, the achievable secrecy capacity of the considered hybrid network is derived in closed-from. Eventually, simulation results are provided to demonstrate the superiority of the proposed BF scheme as well as the validity of the theoretical results, and show the effect of various channel parameters on the system performance.

关键词： Relays Satellites Satellite broadcasting Security System performance signal to noise ratio Array signal processing

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Interictal EEG Denoising using Independent Component Analysis and Empirical Mode Decomposition

Interictal EEG Denoising using Independent Component Analysi...

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International Conference on Telecommunications and signal processing

作者： Sina Salsabili Sepideh Hajipour Sardoui Mohammad B. Shamsollahi School of Engineering and Science Sharif University of Technology - International Campus Kish Island Biomedical Signal and Image Processing Laboratory (BiSIPL) School of Electrical Engineering Sharif University of Technology

ISBN: (纸本)9781479984992

Noise contamination is inevitable in biomedical recordings. In some cases biomedical recordings are highly contaminated with artifacts which make the effective recovering process hard to achieve. Many different methods have been proposed for artifact removal from biomedical signals but introducing an effective method which can present valuable data for medical analysis, is still an ongoing process. In this paper a new method for interictal EEG denoising is presented. Single-channel ICA denoising method based on EMD decomposition is used to improve the multi-channel ICA denoising results. This method is tested on simulated epileptic recordings which are contaminated with real muscle artifact and EEG background activity.

关键词： Single Channel ICA Multi-channel ICA denoising EMD Interictal Epileptic Spikes Muscle artifact EEG background activity

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