Pub Date : 2012-04-18DOI: 10.1109/SIU.2012.6204641
F. Zengin, O. Urhan, M. Güllü, P. Iseri
In this study, a system is developed to measure intensity of human essential tremor in a qualitative manner. The system has a ring shape and contains a three-axis accelerometer, microcontroller and memory unit. Three-axis acceleration data is sampled at 30Hz and stored in 256Mbit flash memory. The system is able to run along one day using single 1000mAh capacity 3V battery. The data collected is transferred to computer using USB interface to convert it to qualitative value. One of the most important advantage of the system is its low-cost. Prototype of the system is developed up to now and patient test will be performed soon.
{"title":"Qualitative measurement of tremor intensity using a three axis accelerometer based device","authors":"F. Zengin, O. Urhan, M. Güllü, P. Iseri","doi":"10.1109/SIU.2012.6204641","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204641","url":null,"abstract":"In this study, a system is developed to measure intensity of human essential tremor in a qualitative manner. The system has a ring shape and contains a three-axis accelerometer, microcontroller and memory unit. Three-axis acceleration data is sampled at 30Hz and stored in 256Mbit flash memory. The system is able to run along one day using single 1000mAh capacity 3V battery. The data collected is transferred to computer using USB interface to convert it to qualitative value. One of the most important advantage of the system is its low-cost. Prototype of the system is developed up to now and patient test will be performed soon.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126968865","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 : 2012-04-18DOI: 10.1109/SIU.2012.6204605
Hande Adiguzel, P. D. Sahin, M. Kalpakli
Many researches and historians from all around the world are interested in historical Ottoman archives. However, translation of these documents requires competent historians which is not a feasible method in terms of time and cost. Thus, automatic translation of these documents are required. In this paper, preprocessing steps of accessing the Ottoman manuscripts with a word based search engine is studied. These preprocessing steps are binarization and line segmentation of digitalized documents. The traditional line segmentation methods applied to printed documents do not yield to satisfactory results for historical and handwritten documents. Due to this fact, more complex line segmentation techniques must be used. In this study, we developed a projection profile based method for line segmentation and local binarization is used. The experiments are conducted on a 120 page Ottoman archive and the results show that the proposed system is successful.
{"title":"Line segmentation of Ottoman documents","authors":"Hande Adiguzel, P. D. Sahin, M. Kalpakli","doi":"10.1109/SIU.2012.6204605","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204605","url":null,"abstract":"Many researches and historians from all around the world are interested in historical Ottoman archives. However, translation of these documents requires competent historians which is not a feasible method in terms of time and cost. Thus, automatic translation of these documents are required. In this paper, preprocessing steps of accessing the Ottoman manuscripts with a word based search engine is studied. These preprocessing steps are binarization and line segmentation of digitalized documents. The traditional line segmentation methods applied to printed documents do not yield to satisfactory results for historical and handwritten documents. Due to this fact, more complex line segmentation techniques must be used. In this study, we developed a projection profile based method for line segmentation and local binarization is used. The experiments are conducted on a 120 page Ottoman archive and the results show that the proposed system is successful.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130211465","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 : 2012-04-18DOI: 10.1109/SIU.2012.6204563
Mustafa Namdar, B. Sahin, H. Ilhan, L. Durak-Ata
In this study, the performance analysis of Fast Fourier Transform and Chirp Z transform based OFDM systems for cognitive radio networks with energy detector model for the spectrum sensing method is realized. Here, energy detection model for noncooperative spectrum sensing is investigated. On the other hand, the analysis is implemented by segmented Chirp z transform. In this study Chirp z transform based spectrum sensing is proposed for the increase of dispersed spectrum utilization and in this context firstly used in literature. Also with the system model, using inverse fast Fourier transform in transmitter and Chirp z transform in receiver rather than fast Fourier transform, the computational complexity and the processing time are reduced, and performance increase is observed for high signal to noise ratio values.
{"title":"Chirp Z transform based spectrum sensing via energy detection","authors":"Mustafa Namdar, B. Sahin, H. Ilhan, L. Durak-Ata","doi":"10.1109/SIU.2012.6204563","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204563","url":null,"abstract":"In this study, the performance analysis of Fast Fourier Transform and Chirp Z transform based OFDM systems for cognitive radio networks with energy detector model for the spectrum sensing method is realized. Here, energy detection model for noncooperative spectrum sensing is investigated. On the other hand, the analysis is implemented by segmented Chirp z transform. In this study Chirp z transform based spectrum sensing is proposed for the increase of dispersed spectrum utilization and in this context firstly used in literature. Also with the system model, using inverse fast Fourier transform in transmitter and Chirp z transform in receiver rather than fast Fourier transform, the computational complexity and the processing time are reduced, and performance increase is observed for high signal to noise ratio values.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"37 22","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133008116","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 : 2012-04-18DOI: 10.1109/SIU.2012.6204599
Caglar Kavak, Seckin Ozsarac
Atmospheric effects are one of the important factors that affect the physical realism of the infrared (IR) scene generators. IR scene generators obtained by OpenGL library are used in the applications where performance is critical. Modeling atmospheric effects in the IR band using OpenGL's fog model approach is found in the literature. However, the related fog model needs parameters that are independent of the range. In this paper, a novel model that is developed by using the least squares estimation for the both range and wavelength dependent atmospheric transmittance and atmospheric path radiance is proposed and the related model parameters are transformed to usable equivalent parameters for OpenGL platform. It is demonstrated with the simulations that the proposed model has an error less than 5%.
{"title":"Modeling atmospheric effects in the infrared scene generator based on OpenGL","authors":"Caglar Kavak, Seckin Ozsarac","doi":"10.1109/SIU.2012.6204599","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204599","url":null,"abstract":"Atmospheric effects are one of the important factors that affect the physical realism of the infrared (IR) scene generators. IR scene generators obtained by OpenGL library are used in the applications where performance is critical. Modeling atmospheric effects in the IR band using OpenGL's fog model approach is found in the literature. However, the related fog model needs parameters that are independent of the range. In this paper, a novel model that is developed by using the least squares estimation for the both range and wavelength dependent atmospheric transmittance and atmospheric path radiance is proposed and the related model parameters are transformed to usable equivalent parameters for OpenGL platform. It is demonstrated with the simulations that the proposed model has an error less than 5%.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131316264","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 : 2012-04-18DOI: 10.1109/SIU.2012.6204803
Tolga Girici, Ali Yildiz
In this work we consider the problem of fair resource allocation in Orthogonal Frequency Division Multiplexing (OFDM) based relayed downlink transmission. A transmission frame is divided into two subframes. Base and Relay Stations transmit in the first and second subframe respectively. Resources are divided into subchannels and time slot and allocated to users in a max-min fair manner. Contrary to an Amplify and Forward assumption in the literature, we assume Decode and Forward relays and hence subchannel duration also becomes an optimization parameter. The problem is formulated and solved as a linear programming problem. A heuristic algorithm is also proposed. Simulation results prove that Decode and Forward relaying provides significant performance improvement with respect to Amplify and Forward relaying.
{"title":"Fair resource allocation in OFDMA based relayed transmission","authors":"Tolga Girici, Ali Yildiz","doi":"10.1109/SIU.2012.6204803","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204803","url":null,"abstract":"In this work we consider the problem of fair resource allocation in Orthogonal Frequency Division Multiplexing (OFDM) based relayed downlink transmission. A transmission frame is divided into two subframes. Base and Relay Stations transmit in the first and second subframe respectively. Resources are divided into subchannels and time slot and allocated to users in a max-min fair manner. Contrary to an Amplify and Forward assumption in the literature, we assume Decode and Forward relays and hence subchannel duration also becomes an optimization parameter. The problem is formulated and solved as a linear programming problem. A heuristic algorithm is also proposed. Simulation results prove that Decode and Forward relaying provides significant performance improvement with respect to Amplify and Forward relaying.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123298258","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 : 2012-04-18DOI: 10.1109/SIU.2012.6204519
M. Ö. Cingiz, B. Diri
Recent advancements in Web 2.0, people can't be regarded as simple content reader, they can also contribute content as writers. This work consists of microblogging and text categorization. Text categorization steps were used in microblogs to find out users whose contributions are more valuable for its related category. 2015 RSS news feeds were taken for training and users' tweets were used as test data. This study also differs from other related projects in selection of features. Selected test feature must be also in training data. If it doesn't, test feature can't be taken as feature in test data. In conclusion, contents of news bots in Twitter have more categorical content than ordinary microbloggers.
{"title":"Classification of microblogging users","authors":"M. Ö. Cingiz, B. Diri","doi":"10.1109/SIU.2012.6204519","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204519","url":null,"abstract":"Recent advancements in Web 2.0, people can't be regarded as simple content reader, they can also contribute content as writers. This work consists of microblogging and text categorization. Text categorization steps were used in microblogs to find out users whose contributions are more valuable for its related category. 2015 RSS news feeds were taken for training and users' tweets were used as test data. This study also differs from other related projects in selection of features. Selected test feature must be also in training data. If it doesn't, test feature can't be taken as feature in test data. In conclusion, contents of news bots in Twitter have more categorical content than ordinary microbloggers.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126363658","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 : 2012-04-18DOI: 10.1109/SIU.2012.6204815
Okan Ozden, M. Karaaslan, E. Unal, D. Kapusuz
Design and performance measures of a printed multistrip monopole antenna for ultra-wideband application are presented. The proposed antenna consists of six quarter wavelength strips of different resonant frequency combined in a manner to provide wide bandwidth and omnidirectional pattern. It operates in the frequency range 2.22~15.8 GHz with impedance bandwidth (VSWR <; 2) of 6 GHz and maximum gain of 6.02 dBi. The radiation pattern is nearly omnidirectional in the Azimuthal plane and bidirectional in the elevation plane and the consistency of the radiation pattern exists for almost all frequency in the operating band.
{"title":"Multistrip monopole antenna for UWB applications","authors":"Okan Ozden, M. Karaaslan, E. Unal, D. Kapusuz","doi":"10.1109/SIU.2012.6204815","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204815","url":null,"abstract":"Design and performance measures of a printed multistrip monopole antenna for ultra-wideband application are presented. The proposed antenna consists of six quarter wavelength strips of different resonant frequency combined in a manner to provide wide bandwidth and omnidirectional pattern. It operates in the frequency range 2.22~15.8 GHz with impedance bandwidth (VSWR <; 2) of 6 GHz and maximum gain of 6.02 dBi. The radiation pattern is nearly omnidirectional in the Azimuthal plane and bidirectional in the elevation plane and the consistency of the radiation pattern exists for almost all frequency in the operating band.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122253707","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 : 2012-04-18DOI: 10.1109/SIU.2012.6204581
Yusuf Bora Kartal, E. G. Schmidt, K. Schmidt
The subject of this work is the real-time communication of the distributed industrial control applications over shared-medium Ethernet. We developed a framework for the real-time communication protocols over shared-medium Ethernet in our previous work. The framework is designed using the Timed Input/Output Automata formalism to serve the changing real-time communication needs of the embedded control applications. In this paper we present the modeling, simulation and formal verification process of the proposed framework using UPPAAL toolbox.
{"title":"The verification of a novel framework for real-time shared medium communication network protocols","authors":"Yusuf Bora Kartal, E. G. Schmidt, K. Schmidt","doi":"10.1109/SIU.2012.6204581","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204581","url":null,"abstract":"The subject of this work is the real-time communication of the distributed industrial control applications over shared-medium Ethernet. We developed a framework for the real-time communication protocols over shared-medium Ethernet in our previous work. The framework is designed using the Timed Input/Output Automata formalism to serve the changing real-time communication needs of the embedded control applications. In this paper we present the modeling, simulation and formal verification process of the proposed framework using UPPAAL toolbox.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125725665","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 : 2012-04-18DOI: 10.1109/SIU.2012.6204708
T. Ozbilgin, M. Koca
Spatial modulation (SM) is a recently proposed effective multiple input multiple output communications technique. In this paper the performance of SM in free space optical (FSO) systems under atmospheric turbulence channels is analyzed. Pulse position modulation (PPM) is used as the modulation technique. In the performance results the benefits of utilizing modulation instead of just using antenna index is observed through decrease in bit error rates in the expense of decreased spectral efficiency.
{"title":"Pulse position modulation based optical spatial modulation over atmospheric turbulence channels","authors":"T. Ozbilgin, M. Koca","doi":"10.1109/SIU.2012.6204708","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204708","url":null,"abstract":"Spatial modulation (SM) is a recently proposed effective multiple input multiple output communications technique. In this paper the performance of SM in free space optical (FSO) systems under atmospheric turbulence channels is analyzed. Pulse position modulation (PPM) is used as the modulation technique. In the performance results the benefits of utilizing modulation instead of just using antenna index is observed through decrease in bit error rates in the expense of decreased spectral efficiency.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"93 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114086982","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 : 2012-04-18DOI: 10.1109/SIU.2012.6204696
Gorkem Serbes, Mehmet Kocaturk, H. Gülçür, N. Aydin
Neuronal spike detection is an essential pre-processing step for the analysis of extracellular brain signals in neuroscience. In resonance based signal decomposition, analyzed signal can be expressed as the sum of a `high-resonance' and `low-resonance component'. A high-resonance component can be thought as a signal consisting of sustained oscillations and a low-resonance component can be thought as a signal consisting of non-oscillatory transients. The morphology of neuronal spikes has transient character and neuronal spikes can be thought as low-resonance component in resonance-based signal decomposition. In this study a novel algorithm for detecting extracellular spikes using resonance based signal decomposition with an adaptive amplitude threshold is proposed. The proposed algorithm is tested on synthetic data and compared with the conventional threshold selection method. The results show that proposed method outperforms traditional amplitude thresholding method.
{"title":"Extracellular spike detection with resonance based signal decomposition","authors":"Gorkem Serbes, Mehmet Kocaturk, H. Gülçür, N. Aydin","doi":"10.1109/SIU.2012.6204696","DOIUrl":"https://doi.org/10.1109/SIU.2012.6204696","url":null,"abstract":"Neuronal spike detection is an essential pre-processing step for the analysis of extracellular brain signals in neuroscience. In resonance based signal decomposition, analyzed signal can be expressed as the sum of a `high-resonance' and `low-resonance component'. A high-resonance component can be thought as a signal consisting of sustained oscillations and a low-resonance component can be thought as a signal consisting of non-oscillatory transients. The morphology of neuronal spikes has transient character and neuronal spikes can be thought as low-resonance component in resonance-based signal decomposition. In this study a novel algorithm for detecting extracellular spikes using resonance based signal decomposition with an adaptive amplitude threshold is proposed. The proposed algorithm is tested on synthetic data and compared with the conventional threshold selection method. The results show that proposed method outperforms traditional amplitude thresholding method.","PeriodicalId":256154,"journal":{"name":"2012 20th Signal Processing and Communications Applications Conference (SIU)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121181426","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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