7'th International Symposium on Telecommunications (IST'2014)最新文献_第3页

A new approach to hyperspectral data compression using rational function approximation for spectral response curve fitting 利用有理函数逼近进行光谱响应曲线拟合的高光谱数据压缩新方法

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000821

S. A. Hosseini, abolfazl. hosseini, H. Ghassemian

引用次数: 2

The achievable secrecy rate of multi-antenna AF relaying using joint transmit and receive beamforming 采用联合发射和接收波束形成的多天线自动对焦中继可实现的保密率

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000872

Meysam Mirzaee, S. Akhlaghi

{"title":"The achievable secrecy rate of multi-antenna AF relaying using joint transmit and receive beamforming","authors":"Meysam Mirzaee, S. Akhlaghi","doi":"10.1109/ISTEL.2014.7000872","DOIUrl":"https://doi.org/10.1109/ISTEL.2014.7000872","url":null,"abstract":"Physical layer security has attracted a great deal of attentions in recent years. This is achieved through using the physical layer characteristics to help sender to transfer data reliably with perfect secrecy. Using multiple-antenna relay node can improve the secrecy capacity of such channel. In this paper, we study the cooperative wiretap channel in which secure data transmission is achieved with the help of a MIMO Amplify and Forward (AF) relay. In such network, it is assumed multiple eavesdroppers attempt to listen to the relay transmitted signal and try to decode the source message. We assume the relay makes use of separated transmit/receive beamforming vectors, dubbed rank-one beamforming matrix. The beamforming vectors are computed such that the achievable secrecy rate is maximized, assuming the relay is subject to a maximum transmit power constraint. Accordingly, it is shown that the problem of finding proper receive beamforming vector can be translated into a scalar optimization problem, where using that the transmit beamforming vector can be obtained through solving a Semi-Definite Programming (SDP) problem.","PeriodicalId":417179,"journal":{"name":"7'th International Symposium on Telecommunications (IST'2014)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126442921","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

Indoor pedestrian navigation fusing WLAN, INS, and map data using pattern matching 使用模式匹配融合WLAN、INS和地图数据的室内行人导航

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000727

R. Sohrabi, M. Fallah, F. Lahouti

引用次数: 2

Fusion of feature sets for facial expression recognition 人脸表情识别的特征集融合

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000756

Mina Navran, Nasrollah Moghadam Charkari

{"title":"Fusion of feature sets for facial expression recognition","authors":"Mina Navran, Nasrollah Moghadam Charkari","doi":"10.1109/ISTEL.2014.7000756","DOIUrl":"https://doi.org/10.1109/ISTEL.2014.7000756","url":null,"abstract":"Emotion recognition has been an important research topic in the area of human computer interaction (HCI) for different application, in the last decade for instance proper emotion recognition has a wide range of applications in security, entertainment, and training. Emotion is expressed via facial muscle movements, speech, body and hand gestures, and various biological signals such heart rate. This paper focuses on facial expression to identify two universal human emotions: happiness and sadness. This is carried out by trying to extract facial feature (geometric & texture). We use spatial information for extracting geometric features and texture features by Gabor filter respectively. We classify emotions using Support Vector Machine (SVM) algorithms. After classification of emotions we use support vector regression (SVR) for intensity estimation of facial expression. The use of a public database \"cohn-kanade\" is conducted. The experimental results demonstrate that the proposed approach is an effective method to recognize emotions through facial expression with an emotion recognition rate more than 95% that demonstrate the efficiency and validity of the method.","PeriodicalId":417179,"journal":{"name":"7'th International Symposium on Telecommunications (IST'2014)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128156604","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: 5

Smoke attenuation in free space optical communication under laboratory controlled conditions 实验室控制条件下自由空间光通信中的烟雾衰减

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000804

M. Ijaz, Zabih Ghassemlooy, A. Gholami, Xuan Tang

{"title":"Smoke attenuation in free space optical communication under laboratory controlled conditions","authors":"M. Ijaz, Zabih Ghassemlooy, A. Gholami, Xuan Tang","doi":"10.1109/ISTEL.2014.7000804","DOIUrl":"https://doi.org/10.1109/ISTEL.2014.7000804","url":null,"abstract":"In this paper, we present the experimental results on smoke attenuation for a free space optical communication link. The smoke is generated in an indoor atmospheric chamber under the laboratory controlled conditions. Theoretical simulations are carried out in order to verify that the homogeneity of smoke inside the atmospheric chamber can be improved by increasing the link length. This is achieved by the optical beam being bouncing back and forth between optical mirrors. The improved homogeneity in smoke enhances the accuracy in evaluating the visibility V to characterize smoke and thus the resultant attenuation of smoke. The experimental results for attenuation of FSO communication systems operating at the visible and near infrared (NIR) wavelengths (0.6 μm <; λ <; 1.6 μm) in the controlled laboratory based smoke environment are also presented and compared to the theoretical smoke model. Results indicate that smoke attenuation is wavelength dependent for dense smoke conditions for V <; 0.5 km. Smoke attenuation is higher at the visible wavelength than the near infrared wavelength. The measured attenuation of smoke is almost 90 dB/km for the visible range and 43 dB/km at the NIR wavelength range for V = 0.185 km.","PeriodicalId":417179,"journal":{"name":"7'th International Symposium on Telecommunications (IST'2014)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131982904","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

Proposing two speaker adaptaion methods for deep neural network based speech recognition systems 提出了两种基于深度神经网络的语音识别系统的说话人自适应方法

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000746

Z. Ansari, S. A. A. Salehi

引用次数: 2

A new approach for multi-pattern string matching in large text corpora 一种大型文本语料库中多模式字符串匹配的新方法

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000672

Ehsan Sherkat, M. Farhoodi, Alireza Yari

引用次数: 5

Distributed adaptive LMF algorithm for sparse parameter estimation in Gaussian mixture noise 高斯混合噪声下稀疏参数估计的分布式自适应LMF算法

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000858

M. Hajiabadi

引用次数: 9

A simple relay selection algorithm in multi user OFDM based cooperative CR networks 多用户OFDM协同CR网络中一种简单的中继选择算法

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000681

Ahmad Farjami, V. Vakili, S. Moghaddam

引用次数: 2

Differentating services using cross-layer fuzzy-based queuing in IP networks IP网络中基于跨层模糊排队的业务区分

7'th International Symposium on Telecommunications (IST'2014) Pub Date : 2014-09-01 DOI: 10.1109/ISTEL.2014.7000785

M. Aminian, S. E. Alavi, M. Tahan

引用次数: 2