Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.最新文献_第9页

Model selection using cross validation Bayesian predictive densities 交叉验证贝叶斯预测密度模型选择

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224925

M. Bekara, G. Fleury

引用次数: 2

Preliminary investigation into the use of the cross Wigner-Ville distribution to detect high impedance earth faults in power systems 利用交叉维格纳-维尔分布检测电力系统高阻抗接地故障的初步研究

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224774

E. Palmer, G. Ledwich, Mohamed Deriche

引用次数: 1

Structured interference cancellation at a WCDMA terminal WCDMA终端的结构化干扰消除

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224750

A. Bastug, D. Slock

{"title":"Structured interference cancellation at a WCDMA terminal","authors":"A. Bastug, D. Slock","doi":"10.1109/ISSPA.2003.1224750","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224750","url":null,"abstract":"In third generation CDMA-based cellular mobile systems, loading fraction is going to be less than one due to interference limitations. In other words, to achieve an acceptable BER, the number of served users and hence used codes will be less than the spreading factor. Accordingly, the existence of unused codes implies the existence of a noise subspace, which can be exploited to partially cancel the intracell and intercell interference. When aperiodic scrambling is used, as in the FDD mode of UMTS, the noise subspace varies with symbol period. In this case, multiuser interference cancelling receivers should contain time varying parts. We discuss two-stage structured receivers for mobile terminals that contain (de)scrambling, (de)spreading, projection/hard-limiting/tangent-hyperbolic decision operations and linear filters the time-varying parts of which are limited to de-scrambling and scrambling. The first stages estimate and delete the intracell and/or intercell interference whereas the second stages operate on the resultant improved SINR signal to detect the user symbols. Performances of various different schemes are compared via simulations.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114767882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

An FPGA implementation of discrete Hartley transforms 离散哈特利变换的FPGA实现

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224781

A. Amira, A. Bouridane

引用次数: 12

A genetic matching pursuit algorithm 一种遗传匹配追踪算法

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224769

D. Stefanoiu, F. Ionescu

引用次数: 13

Parametric estimation of space-time channels with spatially correlated noise by JADE-ESPRIT 基于JADE-ESPRIT的空间相关噪声空时信道参数估计

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224902

J. Picheral, U. Spagnolini

引用次数: 3

Detecting eyes in digital images 在数字图像中检测眼睛

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224805

D. R. Iskander, Siegfried Mioschek, Martin Trunk, W. Werth

{"title":"Detecting eyes in digital images","authors":"D. R. Iskander, Siegfried Mioschek, Martin Trunk, W. Werth","doi":"10.1109/ISSPA.2003.1224805","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224805","url":null,"abstract":"Detecting eyes in digital images taken in a variety of natural lighting conditions is not a straightforward task. Great difficulties are experienced when one attempts to employ traditional methods such as the Radon or Hough transforms. They appear to be not robust enough to perform the detection task in images that include blur, speckles, or a reflection in the pupil or iris areas. Also, in some practical applications these techniques are not computationally efficient. We propose a simple quadruple axis spatial-domain-based symmetry indicator for detecting circularly symmetric objects in digital images. The proposed detector is an inherent part of a larger system for estimating 2D characteristics of the human eye. The efficacy of the proposed technique versus a frequency domain energy detector has been evaluated using artificial images. It has been shown that the proposed method outperforms the energy-based detector for moderate levels of noise. Also, the method appears to be more robust than its frequency domain counterpart and correctly detects the eye in a wide variety of images. An application of the detector to clinical assessment and patient diagnosis in optometry is provided.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"362 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122811069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Efficient classification of noisy speech using neural networks 基于神经网络的噪声语音高效分类

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224714

Cathy Shao, M. Bouchard

{"title":"Efficient classification of noisy speech using neural networks","authors":"Cathy Shao, M. Bouchard","doi":"10.1109/ISSPA.2003.1224714","DOIUrl":"https://doi.org/10.1109/ISSPA.2003.1224714","url":null,"abstract":"The classification of active speech vs. inactive speech in noisy speech is an important part of speech applications, typically in order to achieve a lower bit-rate. In this work, the error rates for raw classification (i.e. with no hangover mechanism) of noisy speech obtained with traditional classification algorithms are compared to the rates obtained with neural network classifiers, trained with different learning algorithms. The traditional classification algorithms used are the linear classifier, some nearest neighbor classifiers and the quadratic Gaussian classifier. The training algorithms used for the neural networks classifiers are the extended Kalman filter and the Levenberg-Marquadt algorithm. An evaluation of the computational complexity for the different classification algorithms is presented. Our noisy speech classification experiments show that using neural network classifiers typically produces a more accurate and more robust classification than other traditional algorithms, while having a significantly lower computational complexity. Neural network classifiers may therefore be a good choice for the core component of a noisy speech classifier, which would typically also include a hangover mechanism and possibly a speech enhancement algorithm.","PeriodicalId":264814,"journal":{"name":"Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123904630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

A strain gauges platform for vertical jumping study 一种用于垂直跳变研究的应变测量平台

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224803

S. Boukhenous, M. Attari, N. Ababou

引用次数: 4

Latency time optimization for FIR and block transmit filters FIR和块传输滤波器的延迟时间优化

Seventh International Symposium on Signal Processing and Its Applications, 2003. Proceedings. Pub Date : 2003-07-01 DOI: 10.1109/ISSPA.2003.1224693

M. Joham, W. Utschick, J. Nossek

引用次数: 8