Pub Date : 2011-10-13DOI: 10.1109/TSP.2011.6043772
K. Slávicek, O. Dostál, M. Javorník
The aim of this work is to propose a novel methodology for quantification of datacommunication network availability. Currently used reliability calculation model is not very suitable for networking environment with many-to-many type of communication. In this paper we propose a novel method to quantify service availability in datacommunication networks. The proposed method reflects the multipoint-to-multipoint nature of datacommunication. The main idea of the proposed method is utilization of a special class of mathematical operations called t-norms.
{"title":"Service availability quantification in datacommunication networks","authors":"K. Slávicek, O. Dostál, M. Javorník","doi":"10.1109/TSP.2011.6043772","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043772","url":null,"abstract":"The aim of this work is to propose a novel methodology for quantification of datacommunication network availability. Currently used reliability calculation model is not very suitable for networking environment with many-to-many type of communication. In this paper we propose a novel method to quantify service availability in datacommunication networks. The proposed method reflects the multipoint-to-multipoint nature of datacommunication. The main idea of the proposed method is utilization of a special class of mathematical operations called t-norms.","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":"121354418","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.2011.6043672
Huayou Su, Chunyuan Zhang, Jun Chai, M. Wen, N. Wu, Ju Ren
This article presents an efficient parallel CAVLC encoder for H.264/AVC based on GPU. By optimizing the architecture of the encoder, three kinds of dependences are eliminated or weakened, including the context dependence, the memory accessing dependence, and the control dependence. We divide the execution of CAVLC into three stages: two scans, component-oriented coding, and lag packing. For each stage, data of a frame can be processed synchronously. Experimental results show that the proposed parallel CAVLC encoder can achieve more than 30 times speedup when compared with the CPU version, and a real-time process for 720p @ 30p can be achieved. The throughput of the presented CAVLC encoder is 11.17 to 6.29 times higher than that of the published software encoders on DSP and multi-core platforms.
{"title":"A high-efficient software parallel CAVCL encoder based on GPU","authors":"Huayou Su, Chunyuan Zhang, Jun Chai, M. Wen, N. Wu, Ju Ren","doi":"10.1109/TSP.2011.6043672","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043672","url":null,"abstract":"This article presents an efficient parallel CAVLC encoder for H.264/AVC based on GPU. By optimizing the architecture of the encoder, three kinds of dependences are eliminated or weakened, including the context dependence, the memory accessing dependence, and the control dependence. We divide the execution of CAVLC into three stages: two scans, component-oriented coding, and lag packing. For each stage, data of a frame can be processed synchronously. Experimental results show that the proposed parallel CAVLC encoder can achieve more than 30 times speedup when compared with the CPU version, and a real-time process for 720p @ 30p can be achieved. The throughput of the presented CAVLC encoder is 11.17 to 6.29 times higher than that of the published software encoders on DSP and multi-core platforms.","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":"129221338","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.2011.6043729
N. Herencsar, J. Koton, K. Vrba, B. Metin
In this paper, a new CMOS minus-type current-controlled third-generation voltage conveyor (CC-VCIII-) is presented. As application example using the presented new active building block a novel voltage-mode first-order all-pass filter is proposed, where instead of floating resistor the electronically controllable intrinsic resistance of the Y terminal is used. Hence, the circuit is resistorless and it shows low sensitivity performance. The behavior of the all-pass filter is verified by SPICE simulations and the TSMC 0.35 μm level 3 CMOS process parameters are used to confirm the theoretical analysis.
{"title":"Novel voltage conveyor with electronic tuning and its application to resistorless all-pass filter","authors":"N. Herencsar, J. Koton, K. Vrba, B. Metin","doi":"10.1109/TSP.2011.6043729","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043729","url":null,"abstract":"In this paper, a new CMOS minus-type current-controlled third-generation voltage conveyor (CC-VCIII-) is presented. As application example using the presented new active building block a novel voltage-mode first-order all-pass filter is proposed, where instead of floating resistor the electronically controllable intrinsic resistance of the Y terminal is used. Hence, the circuit is resistorless and it shows low sensitivity performance. The behavior of the all-pass filter is verified by SPICE simulations and the TSMC 0.35 μm level 3 CMOS process parameters are used 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":"128612457","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.2011.6043665
D. Jelsovka, R. Hudec, M. Breznan
This paper provides an example of the 2D face recognition using existing LDA method and our proposed method based on CCA. LDA is a popular feature extraction technique for face recognition. Likewise, the CCA as a novel method is applied to image processing and biometrics too. CCA is a powerful multivariate analysis method and for that case it was applied on faces recognition. In the paper, a proposed methodology for face recognition based on information theory approach of coding and decoding the face image is presented. Developed algorithm has been tested on 20 subjects from FERET database. Test results gave a recognition rate for LDA method quite the good recognition rate 100% respectively 83% for a small number of input subjects 5 respectively 10. For a large number of inputs images is recognition rate very poor about 40% For our proposed CCA method is average recognition rate about 99% for FERET face database.
{"title":"Face recognition on FERET face database using LDA and CCA methods","authors":"D. Jelsovka, R. Hudec, M. Breznan","doi":"10.1109/TSP.2011.6043665","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043665","url":null,"abstract":"This paper provides an example of the 2D face recognition using existing LDA method and our proposed method based on CCA. LDA is a popular feature extraction technique for face recognition. Likewise, the CCA as a novel method is applied to image processing and biometrics too. CCA is a powerful multivariate analysis method and for that case it was applied on faces recognition. In the paper, a proposed methodology for face recognition based on information theory approach of coding and decoding the face image is presented. Developed algorithm has been tested on 20 subjects from FERET database. Test results gave a recognition rate for LDA method quite the good recognition rate 100% respectively 83% for a small number of input subjects 5 respectively 10. For a large number of inputs images is recognition rate very poor about 40% For our proposed CCA method is average recognition rate about 99% for FERET face database.","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":"115633470","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.2011.6043782
K. Oguchi, Kaoru Harasaki, Shuhei Terada, D. Hanawa
Good visibility is essential to maintaining QoL (Quality of Life). Unfortunately, the world is rapidly aging, and aging degrades vision performance. In order to create future home/campus environments, we clarify the basic attributes of visibility that are needed to support low vision, or vision-impaired people. In an experiment, 30 subjects wear goggles simulating visual disturbances (constriction of the visual field and wall-eye) to determine the maximum distance that permitted successful recognition between the subject and a sign. The signs used here have 5 different patterns, from a simple humanoid to a humanoid plus blinking bricks. Subjects' comments on visibility are also gathered after the distance experiment. The result implies the size of sign needed for vision impaired people in home/campus environments.
{"title":"Basic experimental study on visibility dependence on the signal sign pattern for low vision people","authors":"K. Oguchi, Kaoru Harasaki, Shuhei Terada, D. Hanawa","doi":"10.1109/TSP.2011.6043782","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043782","url":null,"abstract":"Good visibility is essential to maintaining QoL (Quality of Life). Unfortunately, the world is rapidly aging, and aging degrades vision performance. In order to create future home/campus environments, we clarify the basic attributes of visibility that are needed to support low vision, or vision-impaired people. In an experiment, 30 subjects wear goggles simulating visual disturbances (constriction of the visual field and wall-eye) to determine the maximum distance that permitted successful recognition between the subject and a sign. The signs used here have 5 different patterns, from a simple humanoid to a humanoid plus blinking bricks. Subjects' comments on visibility are also gathered after the distance experiment. The result implies the size of sign needed for vision impaired people in home/campus environments.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"93 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":"127146226","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.2011.6043707
O. Smirg, O. Liberda, A. Sprlakova, Z. Smékal
The paper deals with the processing of MRI (Magnetic Resonance Images), which are segmented, and using consecutive slices a 3D reconstruction of the TMJ (temporomandibular joint) disc is realized. The segmentation method combines spatial continuity of individual slices and a genetic algorithm. Using the genetic algorithm a threshold is set for the selection of video segments. The MRI technique is one of the non-invasive imaging methods especially for the soft tissues of the human body, which include the temporomandibular disc. After segmentation, a 3D (three-dimensional) model was realized using the marching cube method, and was subsequently smoothed using the Laplace smoothing algorithm.
{"title":"Creating a 3D model of the temporomandibular joint disc on the basis of segmented MRI slices","authors":"O. Smirg, O. Liberda, A. Sprlakova, Z. Smékal","doi":"10.1109/TSP.2011.6043707","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043707","url":null,"abstract":"The paper deals with the processing of MRI (Magnetic Resonance Images), which are segmented, and using consecutive slices a 3D reconstruction of the TMJ (temporomandibular joint) disc is realized. The segmentation method combines spatial continuity of individual slices and a genetic algorithm. Using the genetic algorithm a threshold is set for the selection of video segments. The MRI technique is one of the non-invasive imaging methods especially for the soft tissues of the human body, which include the temporomandibular disc. After segmentation, a 3D (three-dimensional) model was realized using the marching cube method, and was subsequently smoothed using the Laplace smoothing algorithm.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"C-28 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121001494","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.2011.6043718
B. Metin, E. Arslan, N. Herencsar, O. Cicekoglu
In this study, a simple voltage-mode first-order all-pass (AP) filter implementation is presented which employs only MOS transistors instead of active elements like CCH, CDBA, FTFN, etc. that include large number of transistors. Transconductance (gm) and gate-to-source parasitic capacitance (Cgs) of the transistors are employed to form the AP transfer function. It is shown that simulations are in good agreement with the theoretical results.
{"title":"Voltage-mode MOS-only all-pass filter","authors":"B. Metin, E. Arslan, N. Herencsar, O. Cicekoglu","doi":"10.1109/TSP.2011.6043718","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043718","url":null,"abstract":"In this study, a simple voltage-mode first-order all-pass (AP) filter implementation is presented which employs only MOS transistors instead of active elements like CCH, CDBA, FTFN, etc. that include large number of transistors. Transconductance (gm) and gate-to-source parasitic capacitance (Cgs) of the transistors are employed to form the AP transfer function. It is shown that simulations are in good agreement with the theoretical results.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"38 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":"124195926","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.2011.6043682
J. Dvorák, R. Maršálek
This paper is focused on the evaluation of transmitter imperfections influence on single carrier and multi carrier schemes for high speed data transmission in millimeter wave band. The influence of quantization in data converters, transmitter IQ imbalances together with RF channel on the constellation diagram is evaluated. It is shown that the transceiver impairments and RF channel distort the IQ diagram in similar way for both modes, nevertheless the multi carrier mode is more suitable for the case of multipath propagation and higher user data rates. Bit-error-rate on AWGN channel is used as performance comparison criterion for foregoing imperfections.
{"title":"Simulation of multi and single carrier modes for millimeter-wave transmission in presence of transmitter imperfections","authors":"J. Dvorák, R. Maršálek","doi":"10.1109/TSP.2011.6043682","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043682","url":null,"abstract":"This paper is focused on the evaluation of transmitter imperfections influence on single carrier and multi carrier schemes for high speed data transmission in millimeter wave band. The influence of quantization in data converters, transmitter IQ imbalances together with RF channel on the constellation diagram is evaluated. It is shown that the transceiver impairments and RF channel distort the IQ diagram in similar way for both modes, nevertheless the multi carrier mode is more suitable for the case of multipath propagation and higher user data rates. Bit-error-rate on AWGN channel is used as performance comparison criterion for foregoing imperfections.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"1249 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":"122696053","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.2011.6043681
Jaromir Macak
Digital simulation of audio transformers is discussed in this paper. A simplified model of the audio transformer is designed. The model is described using nonlinear differential equations. The transformer core is modeled by Jiles-Atherton and Frohlich models. The whole system is approximated in order to reduce computational complexity. Finally, the proposed algorithm is tested in real-time and the computational complexity is determined.
{"title":"Nonlinear transformer simulation for real-time digital audio signal processing","authors":"Jaromir Macak","doi":"10.1109/TSP.2011.6043681","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043681","url":null,"abstract":"Digital simulation of audio transformers is discussed in this paper. A simplified model of the audio transformer is designed. The model is described using nonlinear differential equations. The transformer core is modeled by Jiles-Atherton and Frohlich models. The whole system is approximated in order to reduce computational complexity. Finally, the proposed algorithm is tested in real-time and the computational complexity is determined.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"56 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":"128322498","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.2011.6043690
R. Studanski, R. Was, A. Studanska
In this paper authors present a possible way to receive a narrowband digital signal that was previously registered in a wide spectrum. To begin with a scheme of receiving equipment is shown. Next, the digital signal processing leading to extraction information from narrowband OQPSK signal is described.
{"title":"Digital receiving of OQPSK signals acquired in wide spectrum","authors":"R. Studanski, R. Was, A. Studanska","doi":"10.1109/TSP.2011.6043690","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043690","url":null,"abstract":"In this paper authors present a possible way to receive a narrowband digital signal that was previously registered in a wide spectrum. To begin with a scheme of receiving equipment is shown. Next, the digital signal processing leading to extraction information from narrowband OQPSK signal is described.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"17 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":"124715858","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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