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

共 2957 条记录，以下是2731-2740 订阅

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All-optical signal processing using semiconductor optical amplifier based logic gates 3

All-optical signal processing using semiconductor optical am...

引用

3rd IEEE/LEOS international conference on Numerical Simulation of Semiconductor Optoelectronic Devices, NUSOD 2003

作者： Kim, Jae Hun Son, Chang Wan Kim, Young Byun, Young Tae Jhon, Young Min Lee, Seok Woo, Deok Ha Kim, Sun Ho Choi, Young Wan Photonics Research Center Korea Institute of Science and Technology 39-1 Hawolgok Seongbuk Seoul136-791 Korea Republic of Lab. of Optoelectronics and Optical Communication Chung-Ang University Seoul156-756 Korea Republic of

Some of all-optical signal processing techniques using all-optical logic gates based on semiconductor optical amplifiers have been demonstrated at 10 Gbps. The primary techniques for all-optical signal processing such... 详细信息

ISBN: (纸本)0780379926

关键词： Optical fiber communication

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Minimizing embedded software power consumption through reduction of data memory access 4

Minimizing embedded software power consumption through reduc...

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Joint conference of the 4th international conference on Information, Communications and signal processing and 4th Pacific-Rim conference on Multimedia, ICICS-PCM 2003

作者： Li, Shan Lai, Edmund M-K. Absar, Mohammed Javed School of Computer Engineering Nanyang Technological University Nanyang Avenue Singapore639798 Singapore STMicroelectronics Asia Pacific Pte. Ltd. 20 Science Park Road Singapore117674 Singapore

ISBN: (纸本)0780381858

Software applications that involve multimedia signal processing typically have to process large amounts of data. They often involve the handling of data arrays in the form of nested loops. Experiments show that for this kind of applications data transfer (memory access) operations consume much more power than data-path operations. Our objective is to reduce memory access related power consumption by reducing the number of data transfers between processor and memory, or between a higher (closer to processor) level of memory and a memory at a lower level using source program transformation. The procedure involves profiling, inlining and global transformation. The effectiveness of this procedure is illustrated by applying it to the software for a wideband adaptive multi-rate (WB-AMR) speech decoder which can be obtained from the official website of the 3rd Generation Partnership Project (3GPP). © 2003 IEEE.

关键词： Electric power utilization

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The application of the wavelet transform to the discrete data of logging

引用

3rd international conference on Wavelet Analysis and Its Applications (ICWAA)

作者： Zeng, SP Chen, BD Yang, XW Zhao, J Xu, CR Chongqing Petr Coll Chongqing 400042 Peoples R China

ISBN: (纸本)9812383425

According to the characteristic of noise of non-geology factor containing in the well logging data on stratum, we put forward a new method of de-noising to the raw data by the wavelet transform. This method reduces the noise signal and retains the useful signal. processing results indicated that logs profiles, the clarity of which had been raised, had less noise through wavelet package de-noising disposal, and could be more effectively used in comprehensive interpretation when combining with other logs.

关键词： Wavelet transforms

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Extracting and analyzing sub-signals in heart period signal

引用

3rd international conference on Wavelet Analysis and Its Applications (ICWAA)

作者： Lee, ZY Yu, JH Xiang, TY Ma, HX Niu, YH Xie, ZX Yang, JC Chongqing Univ Med Sci Dept Biomed Engn Chongqing 400016 Peoples R China

ISBN: (纸本)9812383425

To extract sub-signal of heart period signal (HPS), an important signal processing approach, called Wavelet Transform (WT) was addressed. Electrocardiosignal (ECS) was acquired from ten volunteers. ECS was sampled 8 minutes when volunteer was lying, then the same as standing. HPS was extracted from ECS. Wavelet Transform decomposed HPS into one detailed level and one approximation. HPS, approximation and detail were transformed by fast Fourier transformation (FFT). Power indexes were calculated. The total power of HPS has significantly varied. (P<0.05). The power of approximation was significantly increased (P<0.01), that of detail had no significant change (P>0.05) and the ratio of approximation to total power also was increased significantly (P<0.05) from lying to standing. Compared with the two postural results, it shows that approximation signal may express sympathetic activity, and detail signal represents parasympathetic activity. Sympathetic and parasympathetic nervous function can be evaluated respectively and quantificationally by data and graphs from the two decomposed components by Wavelet Transform.

关键词： signal processing

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All-optical signal processing using semiconductor optical amplifier based logic gates

All-optical signal processing using semiconductor optical am...

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IEEE/LEOS international conference on Numerical Simulation of Semiconductor Optoelectronic Devices

作者： Jae Hun Kim Chang Wan Son Young Il Kim Young Tee Byun Young Min Jhon Geok Lee Dook Ha Woo Sun Ho Kim Photonics Research Center Korea Institute of Science and Technology Seoul Korea

ISBN: (纸本)0780379926

关键词： Optical signal processing Semiconductor optical amplifiers Logic gates data mining Multiprotocol label switching Logic devices Optical fiber communication Optical amplifiers Sun Photonics

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Minimizing embedded software power consumption through reduction of data memory access

Minimizing embedded software power consumption through reduc...

引用

international conference on Information, Communications and signal processing

作者： Shan Li E.M.K. Lai M.J. Absar School of Computer Engineering Nanyang Technological University Singapore STMicroelectronics and University of Pavia Singapore

ISBN: (纸本)0780381858

Software applications that involve multimedia signal processing typically have to process large amounts of data. They often involve the handling of data arrays in the form of nested loops. Experiments show that for this kind of applications data transfer (memory access) operations consume much more power than data-path operations. Our objective is to reduce memory access related power consumption by reducing the number of data transfers between processor and memory, or between a higher (closer to processor) level of memory and a memory at a lower level using source program transformation. The procedure involves profiling, inlining and globed transformation. The effectiveness of this procedure is illustrated by applying it to the software for a wideband adaptive multi-rate (WB-AMR) speech decoder which can be obtained from the official website of the 3rd Generation Partnership Project (3GPP).

关键词： Embedded software Energy consumption Application software Optimizing compilers Embedded system Speech Decoding Clocks Streaming media Power engineering computing

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The method of range profile for step frequency MMW radar based on wavelet transform power spectrum estimator 3

The method of range profile for step frequency MMW radar bas...

引用

2002 3rd international conference on Microwave and Millimeter Wave Technology

作者： LI Yuehua LI Xingguo Department of Electronic Engineering Nanjing University of Technology Nanjing University of Science & Technology

ISBN: (纸本)078037486X

The method of range profile for step frequency MMW radar targets based on wavelet transform power spectrum estimator is *** method can successfully measure the power spectrum in samples for which traditional methods often fail because the sample are finite sized,have a complex geometry,or are varyingly *** apply this method to the practical step frequency MMW radar target echo signals,and on the condition of the same sampling frequency and sampling data length,it can achieve one dimensional range profile with profile's resolution superior to *** with FFT algorithm,using wavelet spectrum estimator of short data series,we can achieves high resolution,high accuracy,and low SNR *** Experiment results make clear that the DWT estimator is a sensitive tool in range profile of step frequency MMW radar.

关键词： wavelet transform multiresolution analysis spectrum estimator radar signal image processing

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The multi-signal detecting system of pile integrity testing

The multi-signal detecting system of pile integrity testing

引用

3rd international conference on Experimental Mechanics

作者： Liu, ZT Luo, Y Yu, SH Jiangsu Univ Sci & Technol Fac Sci Zhenjiang 212013 Peoples R China

ISBN: (纸本)0819442615

The low strain reflection wave method plays a principal rule in the integrating detection of base piles. However, there are some deficiencies with this method. For example, there is a blind area of detection on top of the tested pile;it is difficult to recognize the defects at deep-seated parts of the pile;there is still the planar or three-dimensional domino effect, etc. It is very difficult to solve these problems only with the single-transducer pile integrity testing system. A new multi-signal piles integrity testing system is proposed in this paper, which is able to impulse and collect signals on multiple points on top of the pile. By using the multiple superposition data processing method, the detecting system can effectively restrain the interference and elevate the precision and SNR of pile integrity testing. The system can also be applied to the evaluation of engineering structure health.

关键词： pile integrity testing multi-signal detecting multiple superposition data processing method

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Creation of an annotated German broadcast speech database for spoken document retrieval 3

Creation of an annotated German broadcast speech database fo...

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3rd international conference on Language Resources and Evaluation, LREC 2002

作者： Eickeler, Stefan Larson, Martha Rüter, Wolff Köhler, Joachim Fraunhofer Institute for Media Communication IMK Schloss Birlinghoven Sankt Augustin53754 Germany

In this paper we present a semi-Automatic method for creating annotated data sets from German-language broadcast resources for which audio files as well as transcripts are available on the Internet. The transcripts are required to be reasonably accurate, but not perfect. Our approach is implemented by a integrated bundle of data processing tools, which support the human annotator in the creation of an annotated data set specialized for research in the area of spoken document classification and retrieval. Annotation decisions that would require prohibitively large amounts training data or system development time to make automatically are taken over by the human annotator. Annotation decisions which are easily automated and tedious for humans are shouldered by the computer. Using our method we can process and annotate the data approximately ten times faster that it was possible by hand. The data is downloaded and the transcripts are normalized by a series of filters as well as a semi-Automatic digit to text conversion. Then, the system makes use of the Bayesian Information Criterion (BIC) to segment the audio data and Automatic Speech Recognition (ASR) to forced-Alignment of the speech signal with written transcripts. We demonstrate the method with the concrete example of our Deutsche Welle database of programs from the Kalenderblatt radio series.

关键词： data handling

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Time-scale domain analysis of ITS data via wavelet transformation

Time-scale domain analysis of ITS data via wavelet transform...

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3rd international conference on Traffic and Transportation Studies, ICTTS 2002

作者： Fengxiang, Qiao Lei, Yu Xin, Wang Department of Transportation Studies Texas Southern University 3100 Cleburne Avenue Houston TX 77004 Department of Texas Southern University Changjiang Scholar of Northern Jiaotong University Department of Transportation Studies 3100 Cleburne Avenue Houston TX 77004

ISBN: (纸本)0784406308

The nature and sheer amount of Intelligent Transportation System (ITS) data requires careful and judicious processing to appropriate aggregation levels and sampling frames to make the real-time traffic data more meaningful to transportation planners. Traditional aggregation techniques cannot eliminate the unnecessary noises and are unable to tell out what information was attracted and what remains. In this research, the real time ITS data were decomposed by the wavelet transformation. The measuring noises as well as the various useful signal components were then identified. The proper aggregation level, which is able to capture the required component and eliminate other unnecessary ones, was conducted from the well-designed sampling frequency. As a result of this research, computer software compiled in MATLAB was developed which can provide the aggregation levels and aggregated data series for different planning purposes.

关键词： Time domain analysis

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