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Multidimensional scaling algorithm of localization with hybrid TOA and AOA measurements

Multidimensional scaling algorithm of localization with hybr...

引用

International Conference on Information, Communications and Signal processing

作者： Cao Jing-min He Sham Gao Yu-fei Wan Qun Xu Qiang Department of Electronic Engineering University of Electronic Science and Technology of China Chengdu China National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu China

ISBN: (纸本)9781467372190

Recently, multidimensional scaling (MDS) algorithms have been verified to be robust for the emitter localization. However, the traditional MDS algorithms are based on single one kind of measurement. In this paper, a novel hybrid MDS localization algorithm based on both angle-of-arrival (AOA) and time-of-arrival (TOA) measurements is proposed. In the condition that one of the sensors can obtain the AOA of the emitter, this algorithm utilizes AOA measurement to improve the traditional MDS localization based on TOA measurements. The simulation results demonstrated the improvement of this algorithm.

关键词： Sensors Measurement errors Signal processing Mobile communication Wireless sensor networks Signal processing algorithms

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A novel recognition method for hybrid modulation radar signals

A novel recognition method for hybrid modulation radar signa...

引用

IET International Radar Conference 2015

作者： Peng Xiong Liu-Li Wu Xiao-Hu Ru Qing He Zheng Liu Wen-Li Jiang College of Electronic Science and Engineering National University of Defense Technology Changsha Hunan P.R China National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu Sichuan P.R. China

ISBN: (纸本)9781510822023

This paper proposes a method to identify the hybrid modulation signals. Firstly, the method utilizes instantaneous frequency (IF) of signals combined with histogram to classify conventional signals and hybrid modulation signals. Then an improved signal segmentation method is used to resolve the hybrid modulation signals to conventional signals. Experimental results show that the proposed method can identify seven kinds of typical radar signals, and achieve 94% recognition accuracy when SNR is 3dB.

关键词： conventional signals hybrid modulation signals instantaneous frequency signal segmentation

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Hash technology for connection management in high-speed networks

Hash technology for connection management in high-speed netw...

引用

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

作者： Liu, Rong Ji Li, Yun Zhao Cao, Chun Xia National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu China

ISBN: (纸本)9783038351849

Connection management uses hash table. Hash function and data structure are both the bottleneck technology. For balancing computation cost and uniformity of hash function, three new hash functions were devised--the Random number Mapping XOR(RMX) Hash Function based on random number table mapping, the Segment Sampling XOR(SSX) Hash Function and Byte by Byte Shift XOR(BBSX) Hash Function based on segment generation and bit operations. The results show that these three functions are all better than IP Shift-XOR(IPSX) Hash Function on uniformity. This paper analyzed memory access performance and miss rate of multiple slots hash table, and presented the technical idea for shorting packet process time in connection management. Simulation for multiple slots hash table is described. © (2014) Trans Tech Publications, Switzerland.

关键词： Hash functions

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Vehicles categorization in complex background

Vehicles categorization in complex background

引用

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

作者： Xiang, Ying Zhuo Yang, Dong Mei Yan, Ji Kun National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu China

ISBN: (纸本)9783038351849

This paper presents a novel approach to categorize multi-view vehicles in complex background using only two dimension characteristic vectors instead of high dimension vectors. Vehicles have large variability of models and the view-point makes the appearance change dramatically. Significant characteristics should be chosen as the evidence to categorize. In this paper, we categorize the vehicles into two categories - cars and lorries. Line detection method is used and calculating the average line length and the number of parallel lines as the two characteristics. A linear classifier is trained using 30 different view cars and lorries as the training set and an 10 additional different cars and lorries as the testing set. © (2014) Trans Tech Publications, Switzerland.

关键词： Vehicles

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Multiple-input multiple-output over-the-horizon radar beamforming with uniform circular arrays 7

Multiple-input multiple-output over-the-horizon radar beamfo...

引用

2014 7th International Congress on Image and Signal processing, CISP 2014

作者： Zhang, Yi Yuxiong, Jin National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu610041 China

ISBN: (纸本)9781479958351

Multiple-input Multiple-output (MIMO) radar is a new radar system which utilizes multiple antennas at both the transmitting side and the receiving side. In order to suppress the spread-Doppler sea clutter and eliminate the multipath and multimode clutter when detecting slow-moving ships, some OTHR researchers began to propose that applying the technology of MIMO radar to the next generation of sky-wave OTHR. It reaches this by MIMO beamforming which can be formed on both transmit with non-causal adaptive beamforming and receive and uses this transmit and receive 2D selectivity as the basis of a strategy for minimizing spread-Doppler sea clutter and the multipath and multimode clutter. Uniform linear arrays (ULA) can only use one-dimension in azimuth which is the main array in current generation OTHR systems. This paper considers introducing uniform circular arrays (UCA) in OTHR and we apply MIMO adaptive non-causal beamforming to UCA to achieve elevation filtering capability. Theoretical analysis and simulation results have been presented. © 2014 IEEE.

关键词： Beamforming

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Domain adaptation for video steganalysis against motion vector based steganography

Domain adaptation for video steganalysis against motion vect...

引用

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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An Improved Algorithm Based On Reference Selection for Time Difference of Arrival Location

An Improved Algorithm Based On Reference Selection for Time ...

引用

International Congress on Image and Signal processing

作者： Qiang Xu Yang Lei Jingmin Cao Hewen Wei Science and Technology On Blind Signal Processing Laboratory

ISBN: (纸本)9781479958368

Least Square (LS) estimation is a simple but not good enough for localization method which is widely used for target position estimation. The time difference of arrival (TDOA) location based on LS method needs to select a reference sensor to obtain a series of equations. Thus, the measured error of the selected first sensor will certainly influence the location accuracy. In our article, an algorithm based on select the primary sensor is proposed, which selects the primary station according the residual. New algorithm improves performs better than conventional method in harsh environment. Simulation shows that the location precise of new algorithm is much better than the other NLOS mitigation methods.

关键词： Reference selection LLS TDOA

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A Modified Joint Maximum Likelihood Sequence Estimation Algorithm for Burst Signal

A Modified Joint Maximum Likelihood Sequence Estimation Algo...

引用

Wireless Communication and Sensor Network, Intl Conference on

作者： Kun Zhang You-Rong Lu Wei Wang Yan Qi National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu China

ISBN: (纸本)9781479970926

The joint maximum likelihood sequence estimation (JMLSE) is a useful algorithm for the single-antenna co-channel interference cancellation. But the conventional JMLSE algorithm is only suitable for continuous signal. If burst signals are processed as continuous signals, the conventional JMLSE will suffer an error floor. To overcome this problem, a modified JMLSE algorithm was proposed for burst digital signal. Simulation results show that the proposed algorithm can eliminate the defect of error floor, and the performance is almost the same as continuous signal processing.

关键词： GSM Joints Signal processing algorithms Floors Maximum likelihood estimation Interchannel interference

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Effect of channel aging on the sum rate of uplink massive MIMO systems

Effect of channel aging on the sum rate of uplink massive MI...

引用

IEEE International Symposium on Information Theory

作者： Chuili Kong Caijun Zhong Anastasios K. Papazafeiropoulos Michail Matthaiou Zhaoyang Zhang Institute of Information and Communication Engineering Zhejiang University Hangzhou China National Mobile Communications Research Laboratory Southeast University Nanjing China Communications and Signal Processing Group Imperial College London London U.K Department of Signals and Systems Chalmers University of Technology Gothenburg Sweden Electrical Engineering and Computer Science Queen's University Belfast Belfast U.K

ISBN: (纸本)9781467377058

This paper investigates the achievable sum-rate of uplink massive multiple-input multiple-output (MIMO) systems considering a practical channel impairment, namely, aged channel state information (CSI). Taking into account both maximum ratio combining (MRC) and zero-forcing (ZF) receivers at the base station, we present tight closed-form lower bounds on the sum-rate for both receivers, which provide efficient means to evaluate the sum-rate of the system. More importantly, we characterize the impact of channel aging on the power scaling law. Specifically, we show that the transmit power of each user can be scaled down by 1/√(M), which indicates that aged CSI does not affect the power scaling law; instead, it causes only a reduction on the sum rate by reducing the effective signal-to-interference-and-noise ratio (SINR).

关键词： Aging MIMO Receivers Uplink Channel estimation Antennas Training

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Lattice Reduction Aided blind Signal Separation Algorithm

Lattice Reduction Aided Blind Signal Separation Algorithm

引用

IEEE International Conference on Computational science and Engineering, CSE

作者： Kun Zhang Yourong Lu Wei Wang National Key Laboratory of Science and Technology on Blind Signal Processing Chengdu P. R. China

ISBN: (纸本)9781479979820

Multi-antenna blind signal separation (BSS) provides a useful method for co-channel mixed signal processing. But the performance of BSS is limited by the condition number of channel matrix in the presence of noise. To overcome this problem, a new BSS algorithm with the aid of lattice reduction (LR) is proposed for synchronous communication systems. Simulation results show that the proposed algorithm improves the symbol error rate (SER) performance in noise environment while keeping the same complexity level.

关键词： Lattices Noise Signal processing algorithms Complexity theory Algorithm design and analysis Vectors blind source separation

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