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First International Symposium on Control, Communications and Signal Processing, 2004.最新文献

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Experimental setup for underwater artifact identification and signal analysis using wavelets 基于小波的水下伪迹识别与信号分析实验装置
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296266
M. Hergli, F. Bouslama, J. Baili, A. Lansari, A. Al-Rawi, K. Besbes
{"title":"Experimental setup for underwater artifact identification and signal analysis using wavelets","authors":"M. Hergli, F. Bouslama, J. Baili, A. Lansari, A. Al-Rawi, K. Besbes","doi":"10.1109/ISCCSP.2004.1296266","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296266","url":null,"abstract":"The identification of seabed archaeological objects has become of great importance in the last decades. However, often times identifying and retrieving archeological artifacts is an expensive venture. There is a need to develop economical equipment and efficient signal processing techniques to identify and retrieve underwater artifacts. Current signal processing techniques are quite complex. The purpose of this paper is to first propose a test bed for conducting underwater experiments that can be used in a number of applications such as object identification. The experimental setup uses ultrasound waves. Wavelets are used to de-noise and analyze the ultrasound signals reflected from seabed objects. Results show that the test bed can be easily used to simulate various seabed environments. Experimental results show that wavelets are an effective tool for signal de-noising and identification purposes.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131515404","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
Handwritten characters recognition based on SKCS-polyline and hidden Markov model (HMM) 基于skcs -折线和隐马尔可夫模型的手写体字符识别
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296325
E. B. Braiek, N. Aouina, S. Abid, M. Cheriet
{"title":"Handwritten characters recognition based on SKCS-polyline and hidden Markov model (HMM)","authors":"E. B. Braiek, N. Aouina, S. Abid, M. Cheriet","doi":"10.1109/ISCCSP.2004.1296325","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296325","url":null,"abstract":"In this paper, we present a new handwritten character recognition algorithm. The proposed algorithm is based on three main steps. In the first one the original characters are segmented using separable kernel compact support (SKCS) method. In the second step a preprocessing phases: skeleton, separation, resizing, and a polyline approximation processes are then applied to the SKCS segmented characters. In the last step a handwritten hidden Markov model (HMM) is used to recognize the characters from the Cartesian coordinates of their main strokes. Simulation results are presented showing the usefulness of this new recognition method.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131165398","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: 1
Incremental and decremental redundancy in turbo source-channel coding turbo信源信道编码中的增量冗余和递减冗余
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296461
J. Hagenauer, N. Dutsch, J. Barros, A. Schaefer
{"title":"Incremental and decremental redundancy in turbo source-channel coding","authors":"J. Hagenauer, N. Dutsch, J. Barros, A. Schaefer","doi":"10.1109/ISCCSP.2004.1296461","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296461","url":null,"abstract":"For joint source channel coding we extend the concept of incremental redundancy to a combination of decremental and incremental redundancy in a parallel concatenated turbo scheme. Even for compression only the new scheme outperforms Lempel-Ziv compression, but has many advantages in adaptive type II FEC/ARQ systems for the transmission over noisy channels.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133557316","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: 10
Parallelization of an image compression and decompression algorithm based on 1D wavelet transformation 一种基于一维小波变换的并行化图像压缩解压缩算法
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296319
S. Khanfir, M. Jemni, E. B. Braiek
{"title":"Parallelization of an image compression and decompression algorithm based on 1D wavelet transformation","authors":"S. Khanfir, M. Jemni, E. B. Braiek","doi":"10.1109/ISCCSP.2004.1296319","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296319","url":null,"abstract":"Wavelet analysis has received considerable interest in the recent years because of its efficiency in the several practical applications. Image processing for wavelet transformation is considered as one of the most powerful methods that provide a good quality of results. However, its implementation may be too time-consuming accordingly to the problem size. Parallel processing can be a solution to speed up wavelet transformation programs. In this context, and in order to have a quick image compression/decompression program based on 1D wavelet transformation, we have designed three parallel algorithms that where implemented on an IBM RS6000/SP machine. The first parallel algorithm exploits control parallelism it was developed with OpenMP and executed on one four-processor node. The two others exploit data parallelism and were developed with MPI directives. Finally, we present an evaluation of these algorithms based on an experimental study.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":" 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132187559","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
Linear precoding under iterative processing for multiple antenna channels 多天线信道迭代处理下的线性预编码
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296447
N. Gresset, J. Boutros, L. Brunel
{"title":"Linear precoding under iterative processing for multiple antenna channels","authors":"N. Gresset, J. Boutros, L. Brunel","doi":"10.1109/ISCCSP.2004.1296447","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296447","url":null,"abstract":"We propose a universal linear precoder for bit-interleaved coded QAM modulations transmitted over frequency non-selective multiple antenna channels. The precoder is based on cyclotomic multi-dimensional rotations and does not require the knowledge of the channel matrix at the transmitter side. The preceding performance analysis is made via the genie method by assuming a receiver with iterative APP detection. We also describe a new singleton bound on the diversity order that takes into account the time-spreading factor of the precoder. This new bound is indispensable to select the precoder size yielding the maximum diversity order while minimizing the detector's complexity.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115529724","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
Fractional Talbot images of periodic gratings with a certain symmetry 具有一定对称性的周期光栅分数阶Talbot像
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296267
A. Moreno, T. Alieva, M. L. Calvo
{"title":"Fractional Talbot images of periodic gratings with a certain symmetry","authors":"A. Moreno, T. Alieva, M. L. Calvo","doi":"10.1109/ISCCSP.2004.1296267","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296267","url":null,"abstract":"It is shown theoretically and experimentally that the additional self images at the fractional Talbot distances are observed if the initiator of the periodic structure possesses a certain symmetry.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124030703","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: 0
Genetic algorithms for multiobjective predictive control 多目标预测控制的遗传算法
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296240
K. Laabidi, F. Bouani
{"title":"Genetic algorithms for multiobjective predictive control","authors":"K. Laabidi, F. Bouani","doi":"10.1109/ISCCSP.2004.1296240","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296240","url":null,"abstract":"Control of nonlinear uncertain dynamical systems is considered. The artificial neural networks (ANNs) are used to model the process. For each operating level an ANN is determined. The model predictive type of controller is designed that utilizes a set of ANN model and employs the input constraints. The nondominated sorting genetic algorithm (NSGA) is applied to solve the multiobjective optimization problem. The proposed control schema is applied to a numerical example and the simulation results are included.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124619329","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: 11
A simplified network of LMS filters for Bayesian equalization based on a state model 基于状态模型的贝叶斯均衡化LMS滤波器的简化网络
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296503
B. Rim, M. Sylvie
{"title":"A simplified network of LMS filters for Bayesian equalization based on a state model","authors":"B. Rim, M. Sylvie","doi":"10.1109/ISCCSP.2004.1296503","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296503","url":null,"abstract":"The network of Kalman filter (NKF) structure was proposed to perform optimal Bayesian symbol-by-symbol estimation in a SISO equalization context [(P. Grohan et al., September 1997)(R. Amara et al., 2002)]. By approximating the error filtering covariance matrix of each branch of the network by a diagonal one, we show in this paper that the NKF can be simplified into a particular network of normalized LMS filters (NLMSF) minimizing the error on the predicted channel output, so that reducing the corresponding complexity. We also propose an adjusting procedure of the approximating matrix which is still related to the second order statistics of the symbol state estimation error. Simulations show the good performance of the NLMSF based equalizer compared to the NKF version for both short and long memory linear channels.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124798627","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: 2
Modelling microstructured optical fibres 微结构光纤建模
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296486
F. Bahloul, M. Zghal, R. Chatta, R. Attia
{"title":"Modelling microstructured optical fibres","authors":"F. Bahloul, M. Zghal, R. Chatta, R. Attia","doi":"10.1109/ISCCSP.2004.1296486","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296486","url":null,"abstract":"In this paper we present an analysis and design of the microstructured optical fibres using the effective index and the Galerkin models. Some performance of air guiding microstructured fibers is discussed. We establish the effective indexes, field distributions and chromatic dispersion of the guided modes. We demonstrate that the full-vectorial Galerkin method can be efficiently used to obtain the propagation characteristics of microstructured optical fibres. Comparison with previous models and numerical methods is made and excellent agreement is achieved.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127050010","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: 0
A robust RBF neural net Bayesian estimator for channel equalization 信道均衡的鲁棒RBF神经网络贝叶斯估计
First International Symposium on Control, Communications and Signal Processing, 2004. Pub Date : 2004-09-27 DOI: 10.1109/ISCCSP.2004.1296280
D. Khedim, A. Benyettou, M. Woolfson
{"title":"A robust RBF neural net Bayesian estimator for channel equalization","authors":"D. Khedim, A. Benyettou, M. Woolfson","doi":"10.1109/ISCCSP.2004.1296280","DOIUrl":"https://doi.org/10.1109/ISCCSP.2004.1296280","url":null,"abstract":"The characteristic (transfer function) of a dispersive M-ary channel equalizer designed through a Bayesian estimator, a performance indicator that is not trivial to obtain for M>2 due to intersymbol interference (ISI), is investigated. A set of curves is obtained and interpreted. Implementation through a radial basis function neural network is considered. It is shown that because network centers endure updating with different rates, the equalizer characteristic errates off the optimum, causing thus the symbol error rate and/or the training time to increase. A solution, based on incorporating an underlying symmetry in the channel response levels into the updating algorithm, brings the characteristic uniformly closer to the optimal one. It is also provided a strategy endowing the network with self-initializing. Simulation results are presented for a channel with sufficient ISI strength.","PeriodicalId":146713,"journal":{"name":"First International Symposium on Control, Communications and Signal Processing, 2004.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130021777","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: 0
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