Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043746
M. Y. Hamza, Noureen Akhtar, N. Sarwar, Shiquan Yang
Results of tan-hyperbolic pulse propagation in dispersion dominant regime as well as in the simultaneous presence of fiber loss, dispersion and self-phase modulation in single mode fiber are presented, both for initially un-chirped and chirped cases. Split-step Fourier model for nonlinear Schrodinger equation was used for this purpose. Results clearly show that in the presence of fiber nonlinearity, by increasing the steepness parameter, initially the un-chirped pulse first undergoes compression and then it goes on broadening with the propagated distance. Results also show that for higher value of steepness parameter, if the value of initial chirp goes on decreasing, peak power also increase showing the compression of the pulse and then it decreases with the propagated distance in dispersion dominant regime. The inclusion of self-phase modulation further enhances these results. These investigations provide a deeper insight for the fiber response to such type of optical pulses.
{"title":"Investigations of chirped tan-hyperbolic pulse propagation behavior in the presence of fiber loss, dispersion and self-phase modulation of single mode fiber","authors":"M. Y. Hamza, Noureen Akhtar, N. Sarwar, Shiquan Yang","doi":"10.1109/TSP.2011.6043746","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043746","url":null,"abstract":"Results of tan-hyperbolic pulse propagation in dispersion dominant regime as well as in the simultaneous presence of fiber loss, dispersion and self-phase modulation in single mode fiber are presented, both for initially un-chirped and chirped cases. Split-step Fourier model for nonlinear Schrodinger equation was used for this purpose. Results clearly show that in the presence of fiber nonlinearity, by increasing the steepness parameter, initially the un-chirped pulse first undergoes compression and then it goes on broadening with the propagated distance. Results also show that for higher value of steepness parameter, if the value of initial chirp goes on decreasing, peak power also increase showing the compression of the pulse and then it decreases with the propagated distance in dispersion dominant regime. The inclusion of self-phase modulation further enhances these results. These investigations provide a deeper insight for the fiber response to such type of optical pulses.","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":"115153781","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.2011.6043662
P. Kamencay, M. Breznan, R. Jarina, Peter Lukac
In this paper, a stereo matching algorithm based on image segments is presented. We propose the hybrid segmentation algorithm that is based on a combination of the Belief Propagation and Mean Shift algorithms with aim to refine the depth map by using a stereo pair of images. Firstly, a color based segmentation method is applied for segmenting the left image of the input stereo pair (reference image) into regions. The aim of the segmentation is to simplify representation of the image into the form that is easier to analyze and is able to locate objects in images. Secondly, results of the segmentation are used as an input of the local window-based matching method to determine the disparity estimate of each image pixel. The obtained experimental results demonstrate that the final depth map can be obtained by application of segment disparities to the original images.
{"title":"Depth map computation using hybrid segmentation algorithm","authors":"P. Kamencay, M. Breznan, R. Jarina, Peter Lukac","doi":"10.1109/TSP.2011.6043662","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043662","url":null,"abstract":"In this paper, a stereo matching algorithm based on image segments is presented. We propose the hybrid segmentation algorithm that is based on a combination of the Belief Propagation and Mean Shift algorithms with aim to refine the depth map by using a stereo pair of images. Firstly, a color based segmentation method is applied for segmenting the left image of the input stereo pair (reference image) into regions. The aim of the segmentation is to simplify representation of the image into the form that is easier to analyze and is able to locate objects in images. Secondly, results of the segmentation are used as an input of the local window-based matching method to determine the disparity estimate of each image pixel. The obtained experimental results demonstrate that the final depth map can be obtained by application of segment disparities to the original images.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"208 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":"122064956","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.2011.6043728
J. Jerabek, R. Sotner, K. Vrba
Nth-order synthetic elements are presented in this contribution. Two basic current-mode dual-output active elements known as dual-output current followers (DO-CF) are used in the essential single-ended (S-E) circuit and two fully-differential current followers (FD-CF) are used in the fully-differential (F-D) equivalent. Both S-E and F-D 2nd-order low-pass and high-pass responses are shown as examples of particular solutions. Results of AC simulations together with tolerance analyses are included in order to prove design correctness.
{"title":"Current-mode filters with single-ended and fully-differential Nth-order synthetic elements","authors":"J. Jerabek, R. Sotner, K. Vrba","doi":"10.1109/TSP.2011.6043728","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043728","url":null,"abstract":"Nth-order synthetic elements are presented in this contribution. Two basic current-mode dual-output active elements known as dual-output current followers (DO-CF) are used in the essential single-ended (S-E) circuit and two fully-differential current followers (FD-CF) are used in the fully-differential (F-D) equivalent. Both S-E and F-D 2nd-order low-pass and high-pass responses are shown as examples of particular solutions. Results of AC simulations together with tolerance analyses are included in order to prove design correctness.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"27 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":"129860233","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.2011.6043702
T. Paavle, M. Min, D. Trebbels
Using of Minimal Length Chirps (MLC) as excitation signals for the bioimpedance measurement is discussed in this paper. It is shown that reducing the length of chirps and thereby minimizing the required signal energy still allows for a fast and wideband estimation of the bioimpedance. This is very important in the field of implantable and wearable devices, where low power consumption is mandatory. In addition we present a practical signal generation solution based on digital low-cost components.
{"title":"Low-energy chirps for bioimpedance measurement","authors":"T. Paavle, M. Min, D. Trebbels","doi":"10.1109/TSP.2011.6043702","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043702","url":null,"abstract":"Using of Minimal Length Chirps (MLC) as excitation signals for the bioimpedance measurement is discussed in this paper. It is shown that reducing the length of chirps and thereby minimizing the required signal energy still allows for a fast and wideband estimation of the bioimpedance. This is very important in the field of implantable and wearable devices, where low power consumption is mandatory. In addition we present a practical signal generation solution based on digital low-cost components.","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":"130543951","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.2011.6043693
Xintao Qiu, Dongmei Fu, Zhenduo Fu, K. Říha, Radim Burget
Material corrosion has caused more and more losses and costs these years, so the world begin to pay much attention to this problem. In this paper, we mainly discuss the modeling and feature selection of Material corrosion data. With our experimental data with very small sample size, a model of corrosion rate is built. After specialized data preprocessing. By combining RFE and SVM, a novel feature selection method SVM-RFE is introduced. Then integrating this feature selection method and SVM modeling method, a special modeling framework is built. According to the experiments, the priority of this method is established not only on algorithm efficiency but also on predicting precision.
{"title":"The method for material corrosion modelling and feature selection with SVM-RFE","authors":"Xintao Qiu, Dongmei Fu, Zhenduo Fu, K. Říha, Radim Burget","doi":"10.1109/TSP.2011.6043693","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043693","url":null,"abstract":"Material corrosion has caused more and more losses and costs these years, so the world begin to pay much attention to this problem. In this paper, we mainly discuss the modeling and feature selection of Material corrosion data. With our experimental data with very small sample size, a model of corrosion rate is built. After specialized data preprocessing. By combining RFE and SVM, a novel feature selection method SVM-RFE is introduced. Then integrating this feature selection method and SVM modeling method, a special modeling framework is built. According to the experiments, the priority of this method is established not only on algorithm efficiency but also on predicting precision.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"22 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":"117194255","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.2011.6043668
F. Mariut, C. Fosalau, Manuel Avila, D. Petrisor
The paper proposes a three steps algorithm that automatically detects, classifies and recognizes traffic signs from images taken from a car running along European road. Traffic signs are detected by analyzing the color information contained in the images using HSV color space. Detected signs are then classified using correlation with standard sign shapes. The recognition step uses the minimum distance classification based on calculating the Euclidean distance between two feature vectors composed using a Gabor filter with different parameters.
{"title":"Detection and recognition of traffic signs using Gabor filters","authors":"F. Mariut, C. Fosalau, Manuel Avila, D. Petrisor","doi":"10.1109/TSP.2011.6043668","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043668","url":null,"abstract":"The paper proposes a three steps algorithm that automatically detects, classifies and recognizes traffic signs from images taken from a car running along European road. Traffic signs are detected by analyzing the color information contained in the images using HSV color space. Detected signs are then classified using correlation with standard sign shapes. The recognition step uses the minimum distance classification based on calculating the Euclidean distance between two feature vectors composed using a Gabor filter with different parameters.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"130 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":"128341484","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.2011.6043659
M. Slanina, T. Kratochvil, L. Polak, V. Rícný
The paper deals with the temporal properties of a scoring session when assessing the subjective quality of full HD video sequences using the continuous video quality tests. The performed experiment uses a modification of the standard test methodology described in ITU-R Rec. BT.500. It focuses on the reactive times and the time needed for the user ratings to stabilize at the beginning of a video sequence.
{"title":"Temporal aspects of scoring in the user based quality evaluation of HD video","authors":"M. Slanina, T. Kratochvil, L. Polak, V. Rícný","doi":"10.1109/TSP.2011.6043659","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043659","url":null,"abstract":"The paper deals with the temporal properties of a scoring session when assessing the subjective quality of full HD video sequences using the continuous video quality tests. The performed experiment uses a modification of the standard test methodology described in ITU-R Rec. BT.500. It focuses on the reactive times and the time needed for the user ratings to stabilize at the beginning of a video sequence.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"9 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":"131662545","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.2011.6043686
Vit Danecek, P. Silhavy
The article deals with the Fault-tolerant control system which is based on majority voting with the Kalman filter. The reader is made familiar with the Fault tolerant systems and requirements on them at the beginning. The voters, the majority voting principle and the Kalman filter equations are subsequently described. The reader is made familiar with the Fault-tolerant control system which is based on majority voting with the Kalman filter after then. That Fault-tolerant control system is described in detail, including the experimental simulation results. The conclusion of the article contains a detailed description of the Fault-tolerant control system which is based on majority voting with the Kalman filter and it assess experimental results.
{"title":"The Fault-tolerant control system based on majority voting with Kalman filter","authors":"Vit Danecek, P. Silhavy","doi":"10.1109/TSP.2011.6043686","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043686","url":null,"abstract":"The article deals with the Fault-tolerant control system which is based on majority voting with the Kalman filter. The reader is made familiar with the Fault tolerant systems and requirements on them at the beginning. The voters, the majority voting principle and the Kalman filter equations are subsequently described. The reader is made familiar with the Fault-tolerant control system which is based on majority voting with the Kalman filter after then. That Fault-tolerant control system is described in detail, including the experimental simulation results. The conclusion of the article contains a detailed description of the Fault-tolerant control system which is based on majority voting with the Kalman filter and it assess experimental results.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"26 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":"132081674","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.2011.6043734
J. Muller, D. Komosny
The paper deals with a new methods for IP geolocalisation, which is finding a real position of IP-enabled nodes in the Internet. The method is based on RTT measurement between landmarks with known position and a target node, which position we are interested in. The method provides GPS coordinates of a target, which is a different approach from other IP geolocalisation methods such as Geoping and Shortest ping. We also focused on the general usability of RTT for geolocalisation and we discussed its pros and cons. Measurements from a planetary scale network PlanetLab are presented. They are showing the promising geolocalisation results of the new algorithm.
{"title":"New approach for IP geolocalisation","authors":"J. Muller, D. Komosny","doi":"10.1109/TSP.2011.6043734","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043734","url":null,"abstract":"The paper deals with a new methods for IP geolocalisation, which is finding a real position of IP-enabled nodes in the Internet. The method is based on RTT measurement between landmarks with known position and a target node, which position we are interested in. The method provides GPS coordinates of a target, which is a different approach from other IP geolocalisation methods such as Geoping and Shortest ping. We also focused on the general usability of RTT for geolocalisation and we discussed its pros and cons. Measurements from a planetary scale network PlanetLab are presented. They are showing the promising geolocalisation results of the new algorithm.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"73 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":"124186540","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.2011.6043731
T. Petriţa
This paper proposes a general formula for approximation of BTS (Base Transceiver Station) directivity characteristics. While computing gain from HPBW (half power beam width) in H and V plane, a H approximation and a V approximation formulas are suggested, in order to have a quick model for EMF (Electro Magnetic Field) and coverage analysis starting only from basic information about a BTS antenna, using olnly the information availabile in the radio license.
{"title":"Approximation of antenna diagram for BTS antennas","authors":"T. Petriţa","doi":"10.1109/TSP.2011.6043731","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043731","url":null,"abstract":"This paper proposes a general formula for approximation of BTS (Base Transceiver Station) directivity characteristics. While computing gain from HPBW (half power beam width) in H and V plane, a H approximation and a V approximation formulas are suggested, in order to have a quick model for EMF (Electro Magnetic Field) and coverage analysis starting only from basic information about a BTS antenna, using olnly the information availabile in the radio license.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"28 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":"124552561","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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