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2010 IEEE 18th Signal Processing and Communications Applications Conference最新文献

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Using bispectral analysis in OSAS estimation 双谱分析在OSAS估计中的应用
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5652816
Necmettin Sezgin, M. Tagluk, M. Akin
{"title":"Using bispectral analysis in OSAS estimation","authors":"Necmettin Sezgin, M. Tagluk, M. Akin","doi":"10.1109/SIU.2010.5652816","DOIUrl":"https://doi.org/10.1109/SIU.2010.5652816","url":null,"abstract":"In this study the possibility of estimation of Obstractive Sleep Apnea Syndrome (OSAS) through electroensephalographic (EEG) signals using higher order spectra was investigated. Biological structures usually exhibit nonlinear and non-Gaussian distributed characteristics which consequently generate signals embracing nonlinear components as well as phase relations occurring between componets oscillating in different frequencies whose phase couples together over a limited period of time, so called Quadratic Phase Coupling (QPC). In this case the second order power spectrum may not reflect the real characteristics of the biological system. Therefore, the bispectrum analysis was achieved to characterize the nonlinearities and QPCs in OSAS and normal EEGs. Through this analysis the differences in OSAS EEG and normal EEG were comparatively uncovered. From the analysis it was understood that the bispectrum can be used for estimation of OSAS from patients' EEG signals.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115488911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
When does feedback not increase capacity for channels with memory? 什么时候反馈不能增加内存通道的容量?
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5651543
Nevroz Şen, F. Alajaji, S. Yuksel
{"title":"When does feedback not increase capacity for channels with memory?","authors":"Nevroz Şen, F. Alajaji, S. Yuksel","doi":"10.1109/SIU.2010.5651543","DOIUrl":"https://doi.org/10.1109/SIU.2010.5651543","url":null,"abstract":"In this work, we investigate the channels with memory for which feedback does not help to increase their capacity. For this purpose, we consider finite-state Markov (FSM) channels and we first present a symmetric classification for these channels which is similar to the symmetry classification for discrete memoryless channels. We show that for these type of channels feedback capacity is achieved by uniform independent and identically distributed input policies and we show this using the dynamic programming technique.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114276891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improved Variable Index constant false alarm rate radar processors 改进的可变指数恒定虚警率雷达处理器
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5652287
Y. Un, Kani Mucahit Uner
{"title":"Improved Variable Index constant false alarm rate radar processors","authors":"Y. Un, Kani Mucahit Uner","doi":"10.1109/SIU.2010.5652287","DOIUrl":"https://doi.org/10.1109/SIU.2010.5652287","url":null,"abstract":"In the cases when the statistical distribution of range return samples are not known, constant false alarm rate (CFAR) processors can be used. Cell Averaging (CA) CFAR radar processors which have the best performance in Gaussian homogeneous environments, exhibits performance degradation in the presence of an interfering target or in regions of abrupt change in the backround clutter power. The Greatest of (GO) CFAR radar processors are designed to control the false alarm rate, during the clutter power transition in the reference window (non-homogeneous clutter environment). The Smallest of (SO) CFAR radar processors improve detection performance when interfering targets exist in the environment but are unable to prevent excessive false alarm in non-homogeneous environments. Variable Index (VI) CFAR processors employs a composite approach based on CA-CFAR, SO-CFAR, GO-CFAR. Enhanced VI-CFAR (EVI-CFAR) radar processors proposed in this paper, shows performance improvement in different non-homogeneous environments when compared with VI-CFAR.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115278281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Shadowing due to multiple-edge diffraction 多棱衍射引起的阴影
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5651378
Omer Haliloglu, M. Safak
{"title":"Shadowing due to multiple-edge diffraction","authors":"Omer Haliloglu, M. Safak","doi":"10.1109/SIU.2010.5651378","DOIUrl":"https://doi.org/10.1109/SIU.2010.5651378","url":null,"abstract":"This paper presents a shadowing model due to diffraction from multiple knife-edge obstacles. By using the ray-tracing method, the statistical character of the shadowing phenomenon is determined and the results are compared with the statistical model based on log-normal shadowing. The effects of the number of obstacles, the distances between them, variations in their heights, and the range are investigated for various path geometries on the mean, the standard deviation and the correlation distance of diffraction loss. Probability density functions and histograms of diffraction losses obtained by the ray tracing approach and the log-normal model are compared to each other. Lognormal pdf was observed to be more accurate in modeling the shadowing losses due to multiple-edge diffraction in micro-cellular environments.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123385342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New learning approach for drug design 药物设计的新学习方法
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5651756
U. Ayan, G. Cansever
{"title":"New learning approach for drug design","authors":"U. Ayan, G. Cansever","doi":"10.1109/SIU.2010.5651756","DOIUrl":"https://doi.org/10.1109/SIU.2010.5651756","url":null,"abstract":"Although protien classification for Drug design is one of the most widely studied area in the past few years, it is difficult to obtain high accuracy. We used a feature weighting algorithm in order to represent the whole needed feature set. Because of scarce labeled data and high computational complexity of supervised learning methods, a new semi-supervised learning algorithm extended from Gaussian Random Field methodology combined with active query learning is developed. The proposed approach is applied to newly extracted data from DrugBank database contains nearly 4800 drug entries including FDA approved drugs and synthetic drug and 2640 non-drug proteins. We found that our new approach has better accuracy then the other traditional semi-supervised methods and lower computational complexity than the supervised methods.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124919384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Performances of M-PSK and M-QAM modulated OFDM signals over AWGN and Rayleigh fading channels M-PSK和M-QAM调制OFDM信号在AWGN和瑞利衰落信道上的性能
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5652554
E. Ozturk, Yasin Tunçkaya
{"title":"Performances of M-PSK and M-QAM modulated OFDM signals over AWGN and Rayleigh fading channels","authors":"E. Ozturk, Yasin Tunçkaya","doi":"10.1109/SIU.2010.5652554","DOIUrl":"https://doi.org/10.1109/SIU.2010.5652554","url":null,"abstract":"Orthogonal Frequency Division Multiplexing (OFDM) has been used very often in new generation wireless networks. On the other hand, contrast to recent wireless networks employing modulations with contant M value (binary or quadrature), in new generation systems the use of modulation techniques with different M values according to the condition of transmssion channel is proposed. In this work, the symbol error performances of Phase Shift Keying (PSK) and Quadrature Amplitude Modulation (QAM) with different M values (4, 16, 64) are obtained over AWGN and Rayleigh fading channels via simulation. Besides, the simulation results is compared with those of theoratical performance results. It is shown that theoratical and simulation results coincide.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123791384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
The effect of uniform scattered Genetic Algorithms to window function performance 均匀分散遗传算法对窗函数性能的影响
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5653480
T. Kaya, M. C. Ince
{"title":"The effect of uniform scattered Genetic Algorithms to window function performance","authors":"T. Kaya, M. C. Ince","doi":"10.1109/SIU.2010.5653480","DOIUrl":"https://doi.org/10.1109/SIU.2010.5653480","url":null,"abstract":"In this study, the effects of Genetic Algorithms (GA) having uniform scattered initial population was analysed to window function performance used at design of finite impulse response filter prefered for many areas. At work, the comparison with amplitude response of Kaiser window having many features was done. With this work, GAs having different initial population were used to obtain more useful window function at calculation of suitable spectral parameter values. The obtained results show that to get result, uniform scattered GA is more successful than having random produced population. Addition, obtained results were shown with figures and were compared with Kaiser window results and finally, it was observed that the improved method for some applications has more useful structure.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131458844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The investigation of electric and magnetic fields on TE mode of single laser diode Zn0.72Cd0.28Se-ZnSe Zn0.72Cd0.28Se-ZnSe单激光二极管TE模式的电场和磁场研究
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5652304
M. Unal, Yusuf Hacisalihoglu
{"title":"The investigation of electric and magnetic fields on TE mode of single laser diode Zn0.72Cd0.28Se-ZnSe","authors":"M. Unal, Yusuf Hacisalihoglu","doi":"10.1109/SIU.2010.5652304","DOIUrl":"https://doi.org/10.1109/SIU.2010.5652304","url":null,"abstract":"In this work, being explored the refractive index profile of laser diode Zn0.72Cd0.28Se-ZnSe, the important structural and design parameters such as normalized frequency, normalized propagation constant, propagation constants for the laser diode, confinement factor are obtained by Alpha Method and the variations of electromagnetic fields in the regions of semiconductor single step-index laser are investigated.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129799433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new OFDM lattice structure: Toroidal-lattice on the time-frequency plane 一种新的OFDM晶格结构:时频平面上的环形晶格
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5650336
S. Aldirmaz, A. Serbes, L. Durak-Ata
{"title":"A new OFDM lattice structure: Toroidal-lattice on the time-frequency plane","authors":"S. Aldirmaz, A. Serbes, L. Durak-Ata","doi":"10.1109/SIU.2010.5650336","DOIUrl":"https://doi.org/10.1109/SIU.2010.5650336","url":null,"abstract":"We introduce a new frequency division multiplexed (FDM) system where multiple orthogonal Hermite-Gaussian carriers are used as a transmission basis and investigate the performance of the proposed system. The toroidal waveform in a rectangular OFDMA system is constituted by using multiple Hermite — Gaussian functions. The proposed work outperforms the transmission scheme where only single Gaussian pulses are used as the transmission base in the sense of bandwidth efficiency. We investigate both theoretical and simulation results of the proposed method.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130668093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Text-Braille-2 translation system 文本-盲文-2翻译系统
2010 IEEE 18th Signal Processing and Communications Applications Conference Pub Date : 2010-04-22 DOI: 10.1109/SIU.2010.5654363
V. Nabiyev, Omer Akgul
{"title":"Text-Braille-2 translation system","authors":"V. Nabiyev, Omer Akgul","doi":"10.1109/SIU.2010.5654363","DOIUrl":"https://doi.org/10.1109/SIU.2010.5654363","url":null,"abstract":"The number of blind people is nowadays increasing due to various factors worldwide, which creates a inherent communication barrier between the blind and the sighted. The literature includes many studies about the solution of the communication and interaction problems experienced by the blind people. In this work, we design and implement a text-based system with the aim of solving the communication problem. The designed system has two stages, namely Turkish-to-Braille text translation and vice versa. The system can translate Turkish text into Braille-2 with no error. However, Braille-2 text can be translated into Turkish with an average of 90% success rate as can be seen in the results.","PeriodicalId":152297,"journal":{"name":"2010 IEEE 18th Signal Processing and Communications Applications Conference","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131155916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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