Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043730
M. A. Ibrahim, S. Minaei, E. Yüce, N. Herencsar, J. Koton
In this work, we present a new topology for realizing a grounded inductor employing only a single current conveyor (CC), called modified dual-output differential difference current conveyor (MDO-DDCC), and a minimum number of passive components, two resistors, and one grounded capacitor. The non-ideality effects of the active element on the simulated inductor are investigated. To demonstrate the performance of the proposed grounded inductance simulator, it is used to construct a parallel resonant circuit. Simulation results are given to confirm the theoretical analysis.
{"title":"Lossless grounded inductance simulation using only one modified dual output DDCC","authors":"M. A. Ibrahim, S. Minaei, E. Yüce, N. Herencsar, J. Koton","doi":"10.1109/TSP.2011.6043730","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043730","url":null,"abstract":"In this work, we present a new topology for realizing a grounded inductor employing only a single current conveyor (CC), called modified dual-output differential difference current conveyor (MDO-DDCC), and a minimum number of passive components, two resistors, and one grounded capacitor. The non-ideality effects of the active element on the simulated inductor are investigated. To demonstrate the performance of the proposed grounded inductance simulator, it is used to construct a parallel resonant circuit. Simulation results are given to confirm the theoretical analysis.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125856707","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}
Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043708
H. Atassi, A. Esposito, Z. Smékal
The paper deals with the vocal emotion recognition which is a very important task for several applications in the field of human-machine interaction. There is a plenty of algorithms proposed up to date for this purpose that exploit different types of features and classifiers. Our previous work showed that high-level features perform very well in terms of emotion classification from speech. However, little attention has been paid so far to the statistical analysis of these features. For this reason the presented paper mainly focuses on the emotion recognition by using only high-level features. Two different emotional speech corpora were exploited in our experiments, namely the Berlin Database of Emotional Speech and the COST2102 Italian Database of Emotional Speech. Results showed that the best high-level features in terms of high discriminative power strongly differ among the databases considered on the first hand and among the emotions within each database on the second hand.
{"title":"Analysis of high-level features for vocal emotion recognition","authors":"H. Atassi, A. Esposito, Z. Smékal","doi":"10.1109/TSP.2011.6043708","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043708","url":null,"abstract":"The paper deals with the vocal emotion recognition which is a very important task for several applications in the field of human-machine interaction. There is a plenty of algorithms proposed up to date for this purpose that exploit different types of features and classifiers. Our previous work showed that high-level features perform very well in terms of emotion classification from speech. However, little attention has been paid so far to the statistical analysis of these features. For this reason the presented paper mainly focuses on the emotion recognition by using only high-level features. Two different emotional speech corpora were exploited in our experiments, namely the Berlin Database of Emotional Speech and the COST2102 Italian Database of Emotional Speech. Results showed that the best high-level features in terms of high discriminative power strongly differ among the databases considered on the first hand and among the emotions within each database on the second hand.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130033573","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}
Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043778
Vesna M. Radonjic-Djogatovic, V. Acimovic-Raspopovic, A. Kostić-Ljubisavljević, Snezana Mladenovic
In this paper some important requirements for game theory based pricing of services in Next generation networks are discussed. We propose the Cournot game for modelling the economic interactions of two service providers offering the same service and sharing the same network resources. The proposed model is verified through numerous numerical examples. In this paper we analyze numerical results for different total costs of the observed competitive service providers. We analyzed possibilities of the existence of Nash equilibrium in several such cases.
{"title":"Pricing aspects of competition among service providers in next generation networks","authors":"Vesna M. Radonjic-Djogatovic, V. Acimovic-Raspopovic, A. Kostić-Ljubisavljević, Snezana Mladenovic","doi":"10.1109/TSP.2011.6043778","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043778","url":null,"abstract":"In this paper some important requirements for game theory based pricing of services in Next generation networks are discussed. We propose the Cournot game for modelling the economic interactions of two service providers offering the same service and sharing the same network resources. The proposed model is verified through numerous numerical examples. In this paper we analyze numerical results for different total costs of the observed competitive service providers. We analyzed possibilities of the existence of Nash equilibrium in several such cases.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129548824","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}
Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043697
K. Snopek
In the paper, two various representations of a n-D real signal are investigated. The first one is the n-D complex analytic signal with a single-orthant spectrum defined as the extension of the 1-D Gabor's analytic signal. The second one is the n-D hypercomplex analytic signal defined in Clifford and Cayley-Dickson algebras. Their signal-domain and frequency-domain definitions are presented and compared. Some relations between the spectra in 2-D and 3-D hypercomplex domains are presented. The paper is illustrated with the example of a 2-D separable Cauchy pulse.
{"title":"The n-D analytic signals and Fourier spectra in complex and hypercomplex domains","authors":"K. Snopek","doi":"10.1109/TSP.2011.6043697","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043697","url":null,"abstract":"In the paper, two various representations of a n-D real signal are investigated. The first one is the n-D complex analytic signal with a single-orthant spectrum defined as the extension of the 1-D Gabor's analytic signal. The second one is the n-D hypercomplex analytic signal defined in Clifford and Cayley-Dickson algebras. Their signal-domain and frequency-domain definitions are presented and compared. Some relations between the spectra in 2-D and 3-D hypercomplex domains are presented. The paper is illustrated with the example of a 2-D separable Cauchy pulse.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"284 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132191540","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}
Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043753
B. Kirei, M. Neag, M. Topa
This paper presents a novel approach to RF tuner modeling, called composite modeling. The RF/analog blocks are composed by analytical models, obtained by selecting, configuring and merging of pre-defined attributes; these attributes are closed-form analytical representations of the analog signal-processing functions (gain, filtering, frequency conversion, etc.) and the non-idealities considered (noise, nonlinearity, carrier frequency offset, I/Q imbalance, etc.). A framework for modeling RF tuners based on object oriented programming was developed using this method. It enables the development of well-structured yet fully scalable and re-configurable models — thus easy to maintain and refine further, by adding new features; also, the class hierarchy for object oriented implementation is given. The usefulness and flexibility of the proposed approach is demonstrated by an example, the modeling and analysis of a DVB-H tuner for both passband and equivalent baseband simulation.
{"title":"Composite RF tuner models and their object oriented implementation","authors":"B. Kirei, M. Neag, M. Topa","doi":"10.1109/TSP.2011.6043753","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043753","url":null,"abstract":"This paper presents a novel approach to RF tuner modeling, called composite modeling. The RF/analog blocks are composed by analytical models, obtained by selecting, configuring and merging of pre-defined attributes; these attributes are closed-form analytical representations of the analog signal-processing functions (gain, filtering, frequency conversion, etc.) and the non-idealities considered (noise, nonlinearity, carrier frequency offset, I/Q imbalance, etc.). A framework for modeling RF tuners based on object oriented programming was developed using this method. It enables the development of well-structured yet fully scalable and re-configurable models — thus easy to maintain and refine further, by adding new features; also, the class hierarchy for object oriented implementation is given. The usefulness and flexibility of the proposed approach is demonstrated by an example, the modeling and analysis of a DVB-H tuner for both passband and equivalent baseband simulation.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"54 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132606094","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}
Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043774
M. Máté, R. Vida, A. Mihály
Video on demand systems are going to be important services of the future Internet. To achieve scalability and fault tolerance, these systems should rely on distributed video delivery schemes, using peer-to-peer (P2P) networks built among the clients. However, generic P2P data sharing protocols cannot guarantee timely arrival of the video segments. Therefore, they must be adapted to video streaming by restricting P2P delivery into a download window. In this paper we investigate the effect of the frequently occurring phenomenon of incomplete sessions on the efficiency of stored video streaming via P2P data distribution. Through theoretical considerations and a simulation study, we've found that with a P2P download window placed at a fixed distance from the playback position the superfluous downloads can be avoided, and the efficiency of the P2P distribution can be increased.
{"title":"The effect of incomplete sessions on peer-assisted stored video streaming","authors":"M. Máté, R. Vida, A. Mihály","doi":"10.1109/TSP.2011.6043774","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043774","url":null,"abstract":"Video on demand systems are going to be important services of the future Internet. To achieve scalability and fault tolerance, these systems should rely on distributed video delivery schemes, using peer-to-peer (P2P) networks built among the clients. However, generic P2P data sharing protocols cannot guarantee timely arrival of the video segments. Therefore, they must be adapted to video streaming by restricting P2P delivery into a download window. In this paper we investigate the effect of the frequently occurring phenomenon of incomplete sessions on the efficiency of stored video streaming via P2P data distribution. Through theoretical considerations and a simulation study, we've found that with a P2P download window placed at a fixed distance from the playback position the superfluous downloads can be avoided, and the efficiency of the P2P distribution can be increased.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132870644","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}
Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043674
J. Pęksiński, G. Mikolajczak
The aim of the article is to show correction possibilities of digital images, achieved by image acquisition tools built on low class CCD matrices, such as their quality were close to images achieved by high class tools. For this purpose the authors used the linear filter with 3×3 mask, which were generated with neural network.
{"title":"Generation of FIR filters by using neural networks to improve digital images","authors":"J. Pęksiński, G. Mikolajczak","doi":"10.1109/TSP.2011.6043674","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043674","url":null,"abstract":"The aim of the article is to show correction possibilities of digital images, achieved by image acquisition tools built on low class CCD matrices, such as their quality were close to images achieved by high class tools. For this purpose the authors used the linear filter with 3×3 mask, which were generated with neural network.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130828535","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}
Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043723
M. Stork
The frequency synthesis is one of the most important and most actively researched subjects in the field of VLSI mixed-signal circuit design. Among the existing techniques in this area, phase locked loop fractional architecture is a widely used one for generating frequencies which are not integer multiple of the input reference frequency. Flying-Adder architecture is an emerging technique which is based on a new concept time-average-frequency, to generate frequencies. This paper presents simple fractional frequency synthesizer architecture based on concept flying-adder and phase locked loop principle. The simulation results concerning this approach are presented.
{"title":"Fractional frequency synthesizer using flying adder principle","authors":"M. Stork","doi":"10.1109/TSP.2011.6043723","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043723","url":null,"abstract":"The frequency synthesis is one of the most important and most actively researched subjects in the field of VLSI mixed-signal circuit design. Among the existing techniques in this area, phase locked loop fractional architecture is a widely used one for generating frequencies which are not integer multiple of the input reference frequency. Flying-Adder architecture is an emerging technique which is based on a new concept time-average-frequency, to generate frequencies. This paper presents simple fractional frequency synthesizer architecture based on concept flying-adder and phase locked loop principle. The simulation results concerning this approach are presented.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127015068","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}
Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043720
Z. Hrubos, T. Gotthans, J. Petrzela
It came as a surprise to most scientists when Lorenz in 1963 discovered chaos in a simple system of three autonomous ordinary differential equations with two quadratic nonlinearities. This paper reviews the numerical analysis, simulation and circuit implementation of conservative chaotic oscillator. There is reason to believe that the algebraically simplest examples of chaotic flows with quadratic and piecewise linear nonlinearities have now been identified. A special case of the simple Nóse-Hoover system where the chaotic attractor can be observed without the need to set parameters of the system (or all are equal to one) is described.
{"title":"Novel circuit implementation of the Nóse-Hoover thermostated dynamic system","authors":"Z. Hrubos, T. Gotthans, J. Petrzela","doi":"10.1109/TSP.2011.6043720","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043720","url":null,"abstract":"It came as a surprise to most scientists when Lorenz in 1963 discovered chaos in a simple system of three autonomous ordinary differential equations with two quadratic nonlinearities. This paper reviews the numerical analysis, simulation and circuit implementation of conservative chaotic oscillator. There is reason to believe that the algebraically simplest examples of chaotic flows with quadratic and piecewise linear nonlinearities have now been identified. A special case of the simple Nóse-Hoover system where the chaotic attractor can be observed without the need to set parameters of the system (or all are equal to one) is described.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130558441","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}
Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043698
R. Malutan, B. Belean, P. G. Vilda, M. Borda
The Microarray technique is rather powerful, as it allows to test up thousands of genes at a time, but this produces an overwhelming set of data files containing huge amounts of data, which is quite difficult to pre-process, separate, classify and correlate for interesting conclusions to be extracted. Modern machine learning, data mining and clustering techniques based on information theory, are needed to read and interpret the information contents buried in those large data sets. Independent Component Analysis method can be used to correct the data affected by corruption processes or to filter the uncorrectable one and then clustering methods can group similar genes or classify samples. In this paper a hybrid approach is used to obtain a two way unsupervised clustering for a corrected microarray data.
{"title":"Two way clustering of microarray data using a hybrid approach","authors":"R. Malutan, B. Belean, P. G. Vilda, M. Borda","doi":"10.1109/TSP.2011.6043698","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043698","url":null,"abstract":"The Microarray technique is rather powerful, as it allows to test up thousands of genes at a time, but this produces an overwhelming set of data files containing huge amounts of data, which is quite difficult to pre-process, separate, classify and correlate for interesting conclusions to be extracted. Modern machine learning, data mining and clustering techniques based on information theory, are needed to read and interpret the information contents buried in those large data sets. Independent Component Analysis method can be used to correct the data affected by corruption processes or to filter the uncorrectable one and then clustering methods can group similar genes or classify samples. In this paper a hybrid approach is used to obtain a two way unsupervised clustering for a corrected microarray data.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125015999","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}
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