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	1. A New Structure LDPC Codes Improved of QC-LDPC Codes
	Wenjun Zhang
	Electrics, Communication and Autocontrol Technology 16 May 2008
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	Abstract:Low-Density Parity-Check (LDPC) code is a good linear block codes, which performs at a rate extremely close to shannon capacity. Quasi-cyclic (QC) LDPC form an important subclass of LDPC codes. In this paper, we presents an improved structure of QC-LDPC codes. It is shown that the perfoemance of the improved code is even better than QC-LDPC codes in moderate and long frame length. And because of its structure,the encoding implemention is more suitable than QC-LDPC codes.
	TO cite this article:Wenjun Zhang. A New Structure LDPC Codes Improved of QC-LDPC Codes[OL].[16 May 2008] http://en.paper.edu.cn/en_releasepaper/content/21463


	2. Localization in Wireless Sensor Networks Using a Mobile Anchor
	Zhen Hu,Lei Liu,Zhengxun Song,Dongbing Gu
	Electrics, Communication and Autocontrol Technology 12 May 2008
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	Abstract:In wireless sensor networks (WSNs), sensor location plays a critical role in many applications. Having a GPS receiver on every sensor node is costly. In the past, several approaches, including range-based and range-free, have been proposed to calculate positions for randomly deployed sensor nodes. Most of them use some special nodes, called anchor nodes, which are assumed to know their own locations. Other sensors compute their locations based on the information provided by these anchor nodes. This paper describes MACL, a mobile anchorCentroid localization method, which uses a single mobile anchor node to move in the sensing field and broadcast its current position periodically. The proposed method is radio-frequency based, so no extra hardware or data communication is needed between the sensor nodes. We use simulations and tests from an indoor deployment using the Cricket location system to investigate the performance of MACL, and find that the localization method is principle simple, less computing and communication overhead, low costly, and flexible accuracy.
	TO cite this article:Zhen Hu,Lei Liu,Zhengxun Song, et al. Localization in Wireless Sensor Networks Using a Mobile Anchor[OL].[12 May 2008] http://en.paper.edu.cn/en_releasepaper/content/21314

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	3. An Improved Face Hallucination Based PCA
	Xiaoling Wang,Ju Liu,Jianping Qiao,Jinyu Chu
	Electrics, Communication and Autocontrol Technology 21 April 2008
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	Abstract:In this paper, based on Circularly Symmetrical Gabor Transform (CSGT) and Principal Component Analysis (PCA), we propose a face hallucination approach. In this approach, all of the face images (both input face image and original training database) are transformed through CSGT at first and then local extremes criteria is utilized to extract the intrinsic features of the faces. Based on these features, we calculate Euclidean distances between the input face image and every image in the original training database, and then Euclidean distances are used as criteria to choose the reasonable training database. Once the training database is chosen, we use PCA to hallucinate the input face image as the linear combination of the chosen training images. Experimental results show that our approach can choose training database automatically according to the input face image and get high quality super-resolution image.
	TO cite this article:Xiaoling Wang,Ju Liu,Jianping Qiao, et al. An Improved Face Hallucination Based PCA[OL].[21 April 2008] http://en.paper.edu.cn/en_releasepaper/content/20681


	4. Quad-quaternion MUSIC for DOA Estimation Using Electromagnetic Vector-Sensors
	Xiaofeng Gong,Yougen Xu,Zhiwen Liu
	Electrics, Communication and Autocontrol Technology 03 April 2008
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	Abstract:A new quad-quaternion model is herein established for a six-component electro-magnetic vector-sensor array, under which a multidimensional-algebra based direc-tion-of-arrival (DOA) estimation algorithm, termed as quad-quaternion MUSIC (QQ-MUSIC), is proposed. This method provides DOA estimation (decoupled from polarization) by exploiting the orthogonality of the newly defined ‘quad-quaternion’ signal and noise subspaces. Due to the stronger constraints that quad-quaternion or-thogonality imposes on quad-quaternion vectors, QQ-MUSIC is shown to offer great robustness to model errors, and thus is very competent in practice. Simulation results have validated the proposed method.
	TO cite this article:Xiaofeng Gong,Yougen Xu,Zhiwen Liu. Quad-quaternion MUSIC for DOA Estimation Using Electromagnetic Vector-Sensors[OL].[ 3 April 2008] http://en.paper.edu.cn/en_releasepaper/content/20106


	5. Image Deringing with Adaptive Bilateral Filter
	Guangtao Zhai,Yi Xu,Xiaokang Yang,Wenjun Zhang,Songyu Yu
	Electrics, Communication and Autocontrol Technology 02 April 2008
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	Abstract:In this paper, we tailor the bilateral filter towards the task of suppressing the ringing artifact commonly occurred on JPEG2000 images under low bitrates. The proposed adaptive bilateral filter varies from its original form as the pixel moves from a monotone area towards an edge one. Also the local spreads of the domain and range filters are tuned with the extent of texture activity. The edge detection and distance transform are used to indicate the local edge and texture activity indexes. Experimental results show that the adaptive bilateral filter can effectively smooth out the annoying ringing artifact and ameliorate the visual quality.
	TO cite this article:Guangtao Zhai,Yi Xu,Xiaokang Yang, et al. Image Deringing with Adaptive Bilateral Filter[OL].[ 2 April 2008] http://en.paper.edu.cn/en_releasepaper/content/20051


	6. Unified Artifacts Reduction for Block DCT Compressed Images
	Guangtao Zhai,Yi Xu,Xiaokang Yang,Wenjun Zhang,Songyu Yu
	Electrics, Communication and Autocontrol Technology 02 April 2008
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	Abstract:We propose a unified scheme to alleviate the blocking, ringing and blurring artifacts in block DCT compressed images. The image is decomposed into 2 levels using the over-complete wavelet transform, and the wavelet coefficients are filtered with consideration of local image properties. For the smooth region, the wavelet coefficients are averaged over the range of blocking artifacts’ extension in the over-complete wavelet transform domain on respective levels. For the texture region, only the coefficients on the first level are averaged to prevent over-smooth of the image. And for the edge region, the coefficients are first smoothed and then high-pass filtered to enhance the edges so as to restrain the ringing and blurring artifacts. The inverse transform of the filtered coefficients is performed towards the quality enhanced image. And a quantization constraint is imposed on the final result for better PSNR and visual performance.
	TO cite this article:Guangtao Zhai,Yi Xu,Xiaokang Yang, et al. Unified Artifacts Reduction for Block DCT Compressed Images[OL].[ 2 April 2008] http://en.paper.edu.cn/en_releasepaper/content/20036


	7. Study on Gastric Interdigestive Pressure Activity Based on Phase Space Reconstruction and FastICA
	Huang Biao,Yan Guozheng,Zan Peng,Li Qianru
	Electrics, Communication and Autocontrol Technology 20 March 2008
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	Abstract:Pressure activity data which are an important index of gastric motility can be obtained from the wireless radiotelemetry capsule. But the capsule only records single-dimensional pressure time series which may contain a few interdependent components simultaneously. Automated embedding phase space reconstruction algorithm is employed to reconstruct multi-dimensional phase space. Then the dominant and separated component of the gastric contractions is identified using FastICA algorithm. Finally the use of Hilbert Huang transform method for analyzing the characters of gastric motility is investigated. The results show that the proposed method is an effective approach for the analysis of the gastric pressure series.
	TO cite this article:Huang Biao,Yan Guozheng,Zan Peng, et al. Study on Gastric Interdigestive Pressure Activity Based on Phase Space Reconstruction and FastICA[OL].[20 March 2008] http://en.paper.edu.cn/en_releasepaper/content/19493


	8. Sphere-Decoding of Signals With ISI
	Yu Ke
	Electrics, Communication and Autocontrol Technology 13 November 2007
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	Abstract:Sphere-Decoding is a newly developed fast MLSD (Maximum Likelyhood Sequence Decoding) algorithm commonly used in MIMO (Multiple Input and Multiple Output) System. In this paper, signal sequences with ISI (Intersymbol Interference) is decoded using Sphere-Decoding. The algorithm is modified according to ISI channel with the BER (Bit Error Ratio) simulation results and expected complexity analysis given.
	TO cite this article:Yu Ke. Sphere-Decoding of Signals With ISI[OL].[13 November 2007] http://en.paper.edu.cn/en_releasepaper/content/16311


	9. Using another feature selection algorithm for POS Tagging based on Maximum Entropy Principle
	Yao Ning
	Electrics, Communication and Autocontrol Technology 09 November 2007
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	Abstract:Maximum Entropy model is widely used in natural language processing in many fields, this paper uses Maximum Entropy model to build a part-of-speech tagging system based on the special needs. Because of the huge difference of grammar and structure between Chinese and English, this paper focuses on feature selection’s influence on the premise that its feature template is selected. And we use a feature selection algorithm-iteration, modification, and cutting (IMC) applied to Maximum Entropy model. The experiment shows that we can gain a better result through appropriate feature selection methods.
	TO cite this article:Yao Ning. Using another feature selection algorithm for POS Tagging based on Maximum Entropy Principle[OL].[ 9 November 2007] http://en.paper.edu.cn/en_releasepaper/content/16257


	10. A distributed Identification & Charging system based on Database and Photoelectric sensors
	Dong Ming,Wang Feng
	Electrics, Communication and Autocontrol Technology 14 August 2007
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	Abstract:This paper presents an invisible photoelectric card which can replace IC card in some proper occasions. Traditional photoelectric card has visible holes so that it is easily to be forged. The invisible photoelectric card adopts 3-layer structure which makes the information hidden to naked eyes and improves safety prominently. Combined with Database and MCU(MCS-51), invisible photoelectric card can be used to implement a distributed system having the functions of identification and charging which can be widely used in hotels, library, dinning room etc. Taking the example of hotel management, firstly the structure of the card and the sensors are described; secondly the network of the distributed system is illustrated; This paper also provides the design of both the MCU which controls the sensors and the Database system which processes the user data.
	TO cite this article:Dong Ming,Wang Feng. A distributed Identification & Charging system based on Database and Photoelectric sensors[OL].[14 August 2007] http://en.paper.edu.cn/en_releasepaper/content/14541

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