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检索条件"任意字段=3rd International Conference on Signal and Data Processing, ICSDP 2023"

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Geo-Predictive error correction adaptation for broadcast services

Geo-Predictive error correction adaptation for broadcast ser...

引用

international conference on Ultra Modern Telecommunications and Workshops (ICUMT)

作者： Vinod Kumar Malamal Vadakital Miska M. Hannuksela D. D. Curcio Moncef Gabbouj Department of Signal Processing Tampere University of Technology Tampere Finland Nokia Research Center Tampere Finland

This article presents an error protection method that uses error-condition forecasting. The forecasting procedure uses a-priori acquired knowledge of the Probability-of-Error (PoE), along a route that a mobile client (MC) is expected to traverse. Additional parity data, called Geo-Predictive forward error correcting codes (GP-FEC), is computed over each source block and broadcast before the source block. A mobile client (MC) forecasts the error conditions it could experience in the future, and if needed, fetches and uses GP-FEC. Forecasting and time-diversity due to staggered transmission of GP-FEC, results in improved error robustness. The superior performance of the presented method against conventional broadcasting is verified in simulations using the Digital Video Broadcasting-Handhelds (DVB-H) environment.

关键词： Media Forward error correction Forecasting Digital video broadcasting Fading Scattering

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A data Acquisition System Design for Solid-State Nanopore Biosensor

A Data Acquisition System Design for Solid-State Nanopore Bi...

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2010 3rd international conference on Biomedical Engineering and Informatics (BMEI 2010)

作者： Cai, Zhihu Wu, Hongwen Wang, Xiaojuan Zhang, Yan Li, Xin Liu, Quanjun Southeast Univ State Key Lab Bioelect Nanjing Peoples R China

ISBN: (纸本)9781424464968

A data acquisition system is designed for biosensor based on nanopore, used the chip of TI TMS320VC5509A and Cypress Cy7C68013A. The major goal for our system is to convert analog data to digital data and transfer data to computer. Our system can be used in biological signal data convert already. The experimental results already proved the availability of the system. Because of using of the DSP chip and USB2.0 protocol, some image and signal processing can be made in the hardware, as well as quickly communicating with the computer is available.

关键词： Biosensor Solid-State Nanopore AD DSP USB

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The signal Acquisition and processing of High Pressure Homogenization Process

The Signal Acquisition and Processing of High Pressure Homog...

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3rd IEEE international conference on Computer Science and Information Technology (ICCSIT)

作者： Liu Bin Wang Jing Liu Meilian Feng Tao China Agr Univ Coll Engn Beijing Peoples R China Beijing Technol & Business Univ Coll Mech Engn Beijing Peoples R China

ISBN: (纸本)9781424455379

The signal acquisition and processing of homogenizing pressure in high pressure homogenizer are studied. For the measuring requirements of dynamic parameters in high pressure homogenizer, pressure transmitter, the signal collecting circuits about intensifier pump's motion were selected. The signal acquisition system can perform the functions such as signal collecting, recording and data recalling and so on. Moreover, the wavelet decomposition using 'sym4' at level 10 was used for de-noising of homogenizing pressure signal. The decomposed signal is selected through Birge-Massart threshold strategy and reconstructed. After collected and processed, the homogenizing pressure signal can be the foundational data for analyzing the homogenizing process and improving the crucial structure of high pressure homogenizer.

关键词： high pressure homogenization signal acqusition wavelet transform de-noising

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Prestack Seismic data Enhancement with the Common-Offset Common Reflection Surface (CO CRS) Stack

Prestack Seismic Data Enhancement with the Common-Offset Com...

引用

2010 3rd international conference on Biomedical Engineering and Informatics (BMEI 2010)

作者： Li, Dong Li, Zhenchun Sun, Xiaodong Qin, Ning Zhou, Xuefeng China Univ Petr Coll Georesources & Informat Qingdao Peoples R China

ISBN: (纸本)9781424464968

A new partial common-offset common reflection surface (CO CRS) stacking method is developed in this paper to enhance the quality of sparse low fold seismic data. A multiparameter CO CRS traveltime formula is applied to compute partially stacked CRS supergathers, which have improved signal-to-noise ratio compared with the original data and are regularized by filling the gaps in cases of missing traces. These improved prestack data can be used in many conventional processing steps, e.g., velocity analysis or prestack depth migration instead of the original data. Application on model data reveals that comparing with the image section obtained from the original seismic data, the image section by the application of depth migration with the CO CRS supergathers improves not only the signal-to-noise ratio but also the continuity of reflection events, which has better imaging results.

关键词： partial CO CRS stack CRS supergathers data regularizationt

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An algorithm for measurement data eliminating noise and smoothing

An algorithm for measurement data eliminating noise and smoo...

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international conference on Advanced Computer Theory and Engineering

作者： Du, Jingqing Gao, Shiqiao Niu, Shaohua State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology BIT Beijing China

ISBN: (纸本)9781424465408

A simple data processing algorithm that is a data processing algorithm of shifting window, excluding outliers and computing average several times, is raised through the analysis of noise signal and abrupt signal of engineering testing signals. At the same time, the concepts of order and window width are also raised. The main Basic language algorithms source code of this algorithm is also provided;the simulation and verification tests on this algorithm have been done by using MA TLAB and the result is quite ideal. Meanwhile, this algorithm has also yielded desirable results when processing the penetration overload signal in the tests of projectile penetrating concrete targets of semi-infinite thickness and projectile penetrating three-layer concrete targets of finite thickness. The theory and the practice result can prove that it is practicable and useful for short-time and fast real-time processing as well as able to meet the engineering needs to use this algorithm for data eliminating noise, excluding outliers and smoothing data. © 2010 IEEE.

关键词： MATLAB

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data processing of electric probe data acquired under locally close-to-coherent noise conditions

Data processing of electric probe data acquired under locall...

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3rd international Workshop & Summer School on Plasma Physics

作者： Dias, F. M. Inst Super Tecn Inst Plasmas & Fusao Nucl P-1049001 Lisbon Portugal

A numerical procedure able to effectively eliminate close-to-coherent noise from measured data is presented. Although the data processing of probe measurements in Tokamak machines was the initial motivation, the current procedure is quite general concerning the kind and the source of data it can be applied to. As a result, the procedure can be useful for decreasing drastically the acquisition-time that otherwise is required to achieve acceptable signal-to-noise ratios in a very wide range of measurements.

关键词： signal to noise ratio

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DETECTION OF TOOTHBRUSHING ACTIVITY USING FREE-LIVING ACCELERATION data

DETECTION OF TOOTHBRUSHING ACTIVITY USING FREE-LIVING ACCELE...

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3rd international conference on Bio-Inspired Systems and signal processing (BIOsignalS 2010)

作者： Zillmer, Rudiger Unilever R&D Port Sunlight Quarry Rd East Bebington England

ISBN: (纸本)9789896740184

The present paper discusses the characterisation of toothbrushing activity, using acceleration data collected for 50 subjects in free-living conditions. The data logging is triggered by super-threshold values of acceleration, which can give rise to false activations by non-brushing activities. Due to large intra and inter individual variations, it is not possible to obtain an exhaustive training-set of all activities that trigger the logging. Thus, a structural analysis of appropriate data features is performed, which reveals a clustering of the data. The comparison with brushing activity traces from laboratory experiments allows the identification of toothbrushing activity, while the remainder corresponds to various false activation events like electronic noise or brush handling. The distribution of the resulting toothbrushing activity shows distinct peaks for morning and night brushing activity.

关键词： Activity monitoring Free-living Accelerometer Classification

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An Improved SCS Algorithm Based on LINC Transmitter

An Improved SCS Algorithm Based on LINC Transmitter

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3rd IEEE international conference on Computer Science and Information Technology (ICCSIT)

作者： Wang, Qing Zhong, Ziming Lin, Xiang Univ Elect Sci & Technol China Sch Elect Engn Chengdu Peoples R China Sichuan Univ Coll Comp Sci Chengdu Peoples R China

ISBN: (纸本)9781424455379

This paper proposes an improved signal component separation (SCS) method to solve the non-constant envelop modulated signals through traditional SCS in LINC (Linear Amplification With Nonlinear Components) transmitter. The basic idea of this algorithm is to analyze the angle between adjacent signals, then adopting the method which can improve the signal peak to average power ratio (P APR) and introducing the idea of "keep and go", to minimize envelope mutations caused by the errors from COrdIC algorithm processing, so that the ideal signal envelope can be obtained. The experimental simulation demonstrated the effectiveness and feasibility of this algorithm. The signal P APR can be reduced to 0.0010dB through data from experimental measurements, which is more convenient for linear power amplifier design.

关键词： signal component separation COrdIC algorithm amplitude and phase separation constant envelop envelop mutations

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Electrocardiogram Analysis based on the Karhunen-Loeve Transform

Electrocardiogram Analysis based on the Karhunen-Loeve Trans...

引用

2010 3rd international conference on Biomedical Engineering and Informatics (BMEI 2010)

作者： Yan, Hong Li, Yanjun China Astronaut Res & Training Ctr Beijing Peoples R China

ISBN: (纸本)9781424464968

Karhunen-Loeve Transform (KLT) is the statistically best block transform. In terms of decorrelation of the signal samples and repacking energy distributing, the signal dependent transform of KLT was used in noise eliminating, data compression and features extraction for ECG. Experimental results proved that KLT was proper for suppressing noise of low self-correlated property, e. g. white noise, but has little use for noise of high self-correlation such as power line interference. KLT got high compression ratio at the cost of low information fidelity, though the coding procedure might remove certain noise. KLT was more remarkable for its role in feature extraction, e. g. to distinguish between normal sinus beats from abnormal waveform morphologies. In conclusion, KLT is well suited in ECG processing of noise canceling and data compression, especially a good candidate for robust feature extraction.

关键词： Electrocardiogram (ECG) principal component analysis (PCA) Karhunen-Loeve Transform (KLT) noise canceling data compression features extraction

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System of Communication and Control Based on the Thought

System of Communication and Control Based on the Thought

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3rd Annual international conference on Human System Interaction (HSI)

作者： Gonzalez, Avid Roman

ISBN: (纸本)9781424475629

The present work is oriented to offer a communication system to people who undergo a severe loss of motor function as a result of various accidents and/or diseases so that they can control and interact better with the environment, for which a brain-computer interface has been implemented through the acquisition of EEG signals by electrodes and implementation of algorithms to extract characteristics and execute a method of classification that would interpret these signals and execute corresponding actions The first objective is to design and construct a system of communication and control based on the thought, able to catch and measure EEG signals. The second objective is to implement the system of data acquisition including a digital filter in real time that allows us to eliminate the noise. The third objective is to analyze the variation of the EEG signals in front of the different tasks under study and of implementing an algorithm of extraction of characteristics. The fourth objective is to work on the basis of the characteristics of the EEG signals, to implement a classification system that can discriminate between the two tasks under study on the basis of the corresponding battles.

关键词： BCI AAR EEG signal processing Biomedical signal

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