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2011 International Conference on Communications, Computing and Control Applications (CCCA)最新文献

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Performance of conventional receiver in a CDMA MIMO system using non classical spread spectrum sequences 采用非经典扩频序列的CDMA MIMO系统中传统接收机的性能
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031937
Amira Cherni, Z. Jemaa, S. Belghith
{"title":"Performance of conventional receiver in a CDMA MIMO system using non classical spread spectrum sequences","authors":"Amira Cherni, Z. Jemaa, S. Belghith","doi":"10.1109/CCCA.2011.6031937","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031937","url":null,"abstract":"In this paper, we will highlight the role of spread spectrum sequence on the performance of the CDMA MIMO system. Then we will consider a family of sequences generated by non linear system selected according to the criteria maximum pic of periodic (MPPC) and aperiodic (MPAC) correlation. The performance of these sequences were computed and compared to the performance allowed by the classical Gold sequences. Numerical results showed that the use of these sequences improves the performance of conventional receiver.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"9 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114117421","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
New parallel genetic algorithms for the single-machine scheduling problems in agro-food industry 农业食品工业单机调度问题的新型并行遗传算法
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031216
Asma Karray, M. Benrejeb, P. Borne
{"title":"New parallel genetic algorithms for the single-machine scheduling problems in agro-food industry","authors":"Asma Karray, M. Benrejeb, P. Borne","doi":"10.1109/CCCA.2011.6031216","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031216","url":null,"abstract":"this paper investigates the multi-objective single-machine scheduling problems in agro-food industry. These problems are strongly NP-hard and metaheuristics are known for theirs adaptability to this kind of problems. In this paper, is developed a novel parallel genetic algorithm to solve the single-machine scheduling problems. A comparison between the conventional and parallel versions of genetic algorithm is provided. It relates to the quality of the solution and the execution time of the two approaches. Computational experiments on benchmark data sets show that the proposed approach reach better solutions in short computational times.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123745942","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: 7
Estimation of switched system given by set of nonlinear control systems 由一组非线性控制系统给出的切换系统的估计
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031531
O. Kuzmych, D. Khusainov
{"title":"Estimation of switched system given by set of nonlinear control systems","authors":"O. Kuzmych, D. Khusainov","doi":"10.1109/CCCA.2011.6031531","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031531","url":null,"abstract":"We investigate a special case of switched system which are described by a set of nonlinear control systems with nonlinearity of sector type. Using Lyapunov function method we obtain the estimations of switched system solution at the final time moment depending of initial state of solution. The subsystems can be stable or unstable. We investigate using Lyapunov function of Lurje-Postnikov type [5], [9] and final estimation we obtain by composition of perturbations of the separate subsystems of initial switched system on the whole interval considered.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121585469","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
Estimation of a generic model for a fleet of machines 对一组机器的通用模型进行估计
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031211
Farah Ankoud, G. Mourot, R. Chevalier, Nicolas Paul, J. Ragot
{"title":"Estimation of a generic model for a fleet of machines","authors":"Farah Ankoud, G. Mourot, R. Chevalier, Nicolas Paul, J. Ragot","doi":"10.1109/CCCA.2011.6031211","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031211","url":null,"abstract":"In this paper, we propose a method to identify a generic model for a machine which is a member of a fleet of identical machines. These latest may work in the same or in different operating conditions. Firstly, the method consists in estimating a linear model for each machine independently from other machines, based on the data collected on the machine itself. Secondly, the common part of the models is identified. For that purpose, a resemblance criterion is used to determine identical coefficients over all the models. New models are then generated under some equality constraints on these parameters. The last step of the method consists in validating the choice made about the common part and hence validating the new models. This is realized by a statistical test based on a comparison between new and old estimates. An academic example is finally presented to illustrate the results of the method.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"150 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122760540","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
The effect of the choice of the mapping on the performance of iterative receivers for flat fading channels 平坦衰落信道中映射选择对迭代接收机性能的影响
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031475
Brahim Boukholda, S. Belghith
{"title":"The effect of the choice of the mapping on the performance of iterative receivers for flat fading channels","authors":"Brahim Boukholda, S. Belghith","doi":"10.1109/CCCA.2011.6031475","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031475","url":null,"abstract":"In this paper, we propose to study the effect of the choice of the mapping on the performance of iterative receivers for flat fading channels. We use at the transmitter a BICM (Bit Interleaved Coded Modulation) based scheme obtained by the concatenation of a binary code and a modulator separated by an interleaver. Because of the interleaving, the optimal receiver is too complex. In order to achieve a good complexity/performance trade-off, we propose to use an iterative receiver. The basic idea of the iterative processing is to exchange extrinsic information between the different stages of the receiver to successively improve the performance during the iterations. We consider the case of flat fading channels where a turbo-demodulator is used. An optimization of the mapping is required to obtain a gain by using the iterative receivers. In order to make the mapping choice easier, we propose to perform an analysis based on the Gaussian approximation. This analysis relies on only one simulation of the demodulator.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131359455","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
Comparative study between methods for selection alternative routings in real time 实时备选路由选择方法的比较研究
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031436
Ahmed Hassam, Nassima Keddari, Farida Ain Sebaa, Z. Sari
{"title":"Comparative study between methods for selection alternative routings in real time","authors":"Ahmed Hassam, Nassima Keddari, Farida Ain Sebaa, Z. Sari","doi":"10.1109/CCCA.2011.6031436","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031436","url":null,"abstract":"The management of the queues by rules of priorities constitutes one of the simplest approaches and most used to dynamically schedule the tasks in a job shop. Unfortunately, one of the most important problems concerning the use of the rules of priority is the fact that no rule seems overall better than the others. To regulate these problems, we will combine rules of priorities and scheduling with selection of alternative routings in real time rule DMM. This combination will be realized according to the operating conditions, of the production targets and the state of the job-shop. Since the state of the workshop changes during time, we propose to analyze the state of the system each time a decision of scheduling must be taken, in order to take into account the real state of the job-shop. This approach will be implemented on a model of job-shop and will simulate by the simulation software ARENA.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"62-63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131867373","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
Direction of arrival estimation for nonuniform linear antenna 非均匀线性天线的到达方向估计
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031490
Abdessalem Mhamdi, A. Samet
{"title":"Direction of arrival estimation for nonuniform linear antenna","authors":"Abdessalem Mhamdi, A. Samet","doi":"10.1109/CCCA.2011.6031490","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031490","url":null,"abstract":"This paper deals with the problem of the Direction Of Arrival (DOA) estimation with nonuniform linear arrays (NLA). We show that the Root-MUSIC algorithm can be directly applied in the case of the non uniform array. Moreover, we show that the elimination of a certain sensors of a uniform array degrades only very slightly the performance thanks to the use of the high-resolution(HR) methods like Root-MUSIC. We also show that root-MUSIC presents good performances, and does not require any additional data transformation. In addition, an analytical expression from the estimator variance are derived in order to support our simulation results and to show the advantages of the NLA.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132295221","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: 6
Robust adaptive fault-tolerant control applied to interconnected systems 互联系统鲁棒自适应容错控制
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031217
A. Challouf, A. Tellili, M. Abdelkrim, C. Aubrun
{"title":"Robust adaptive fault-tolerant control applied to interconnected systems","authors":"A. Challouf, A. Tellili, M. Abdelkrim, C. Aubrun","doi":"10.1109/CCCA.2011.6031217","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031217","url":null,"abstract":"In this present article a centralized structure of an adaptive method to solve the problem of robust and fault tolerant control (FTC) for large-scale system linear, continuous and time invariant (LTI), against defects sensors and external disturbances is proposed. This class of system contain N-interconnected subsystems. In fact, it operates one architecture for the direct adaptive method. This is a centralized feedback controller. It is assured by some adaptation laws which are proposed to estimate the unknown potential of sensors faults, disturbances and controller parameters Online. Then, a class of centralized controllers return state is constructed to automatically compensate for the effects of faults and external disturbances based on information extracted. An adaptive mechanism from a scheme where active fault tolerant system is exploited. The proposed techniques are finally evaluated in the light of a simulation for an overall interconnected system that can be decomposed into two subsystems coupling.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"285 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134317196","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
On the stability analysis of sampled-data control systems: A combined continuous-time and discrete-time method 抽样数据控制系统的稳定性分析:连续与离散相结合的方法
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031474
Xu-Guang Li, Hua-guang Zhang, A. Çela, S. Niculescu
{"title":"On the stability analysis of sampled-data control systems: A combined continuous-time and discrete-time method","authors":"Xu-Guang Li, Hua-guang Zhang, A. Çela, S. Niculescu","doi":"10.1109/CCCA.2011.6031474","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031474","url":null,"abstract":"In this paper, we study the stability of sampled-data systems. A combined continuous-time and discrete-time approach is proposed, by adopting a switched system technique. Depending on the sampling period value, we treat the system as a switched system consisting of two subsystems. The two subsystems correspond to the small sampling case and the large sampling case, respectively. First, the small sampling case is studied by using the Razumikhin technique in the continuous-time framework. A condition is given to guarantee that the Lyapunov function decreases at the sampling instants, for the small sampling case. This Razumikhin-based result can be combined with the existing discrete-time methods so that the whole stability interval (small and large sampling parts) can be verified. This criterion is necessary and sufficient to guarantee the quadratic stability so that the maximum quadratic stability interval can be obtained. This combined continuous-time and discrete-time approach has two advantages over the existing approaches: 1) it can lead to a larger stability interval than those derived by the conventional continuous-time and discrete-time approaches; 2) it may reduce the computational complexity.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134257743","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
Automatic generation of software-hardware migration in MPSoC systems MPSoC系统中软硬件迁移的自动生成
2011 International Conference on Communications, Computing and Control Applications (CCCA) Pub Date : 2011-03-03 DOI: 10.1109/CCCA.2011.6031439
Abdelhafidh Ben Fadhel, K. Smiri, A. Ammari, A. Jemai
{"title":"Automatic generation of software-hardware migration in MPSoC systems","authors":"Abdelhafidh Ben Fadhel, K. Smiri, A. Ammari, A. Jemai","doi":"10.1109/CCCA.2011.6031439","DOIUrl":"https://doi.org/10.1109/CCCA.2011.6031439","url":null,"abstract":"we are going to focus on the study and the design of MPSOC systems, more precisely as part of improving the performances of the applications implanted on MPSOC architecture. The objective of this research is to study the problems of the passage from a purely software realization to a realization admitting one or several hardware components and to elaborate a methodology of automatic generation of the migration of a software task into a hardware component in MPSOC systems. The fact of transforming a software task into a hardware task leads to many changes, so much of the hardware side (connection, requirement of an interruption controller, …), of the software side (a task at least, Inputs/Outputs(I/O), synchronization, …) and from an architectural point of view, notable aspects of memorization of data. Experimentation is made on the MJPEG decoder to illustrate the effectiveness of our tool of automatic generation of migration.","PeriodicalId":259067,"journal":{"name":"2011 International Conference on Communications, Computing and Control Applications (CCCA)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115636292","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
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