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2013 21st Telecommunications Forum Telfor (TELFOR)最新文献

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Analytical approximation of speech power spectral density in Serbian language 塞尔维亚语语音功率谱密度的解析近似
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.1109/TELFOR.2013.6716347
M. Jankovic, Z. Perić, D. Ćirić
{"title":"Analytical approximation of speech power spectral density in Serbian language","authors":"M. Jankovic, Z. Perić, D. Ćirić","doi":"10.1109/TELFOR.2013.6716347","DOIUrl":"https://doi.org/10.1109/TELFOR.2013.6716347","url":null,"abstract":"Estimation of speech power spectral density has special importance in speech analysis, synthesis and recognition. It is of practical interest to derive an adequate analytic function that describes speech power spectral density, like the one standardized by CCITT convention. In this paper, the analytical approximation of experimentally obtained speech power spectral density in Serbian language is performed by applying mean-square error minimization method. This method is applied in two different ways, and influence of some parameters in minimization process is investigated. The developed method is also applied for analytic approximation of power spectral density of English and Russian.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129948653","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
Adaptive DC-DC converter for efficient 4G macro-cell base station 高效4G大蜂窝基站的自适应DC-DC变换器
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.1109/TELFOR.2013.6716287
Jean-Marie Retrouvey, Philippe Maugars, Nguyen Trieu Luan Le, P. Descamps
{"title":"Adaptive DC-DC converter for efficient 4G macro-cell base station","authors":"Jean-Marie Retrouvey, Philippe Maugars, Nguyen Trieu Luan Le, P. Descamps","doi":"10.1109/TELFOR.2013.6716287","DOIUrl":"https://doi.org/10.1109/TELFOR.2013.6716287","url":null,"abstract":"This article presents a new problematic in DC-to-DC converter realized for 4G macro cell base station with efficiency improvement concepts. These concepts from EARTH project target a factor two reduction in 4G base station power consumption. The concepts are presented and detailed. DC-to-DC converter specifications needed are discussed. A practical implementation of a 500 kHz and zero to 112W buck converter is presented. The prototype achieves 94% power efficiency and a good stability over the complete power range.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128330655","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
Automated testing of L-IRL robot programming language parser L-IRL机器人编程语言解析器的自动化测试
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.1109/TELFOR.2013.6716357
M. Lutovac, D. Bojic, V. Kvrgic
{"title":"Automated testing of L-IRL robot programming language parser","authors":"M. Lutovac, D. Bojic, V. Kvrgic","doi":"10.1109/TELFOR.2013.6716357","DOIUrl":"https://doi.org/10.1109/TELFOR.2013.6716357","url":null,"abstract":"Parser testing represents the basis of compiler testing because the accuracy of parsing execution directly affects the accuracy of semantic analysis, optimization and object code generation. It should include tests for correct and expected, but also for unexpected and invalid cases. In this paper, techniques for testing the parser, as well as algorithms and tools for test sentence generation are discussed. Generation of negative test sentences by modifying the original language grammar is described. Positive and negative test cases generated by Grow algorithm and Purdom algorithm are applied to the testing of L-IRL robot programming language and obtained results are described in this paper.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129018056","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
Deciding on appropriate VPN application for remote Ham radio station network 确定远程业余无线电台网络中合适的VPN应用
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.1109/TELFOR.2013.6716409
Kemal Hajdarevic, Haris Smajlagic, Sead Celjo, Emil Tafro
{"title":"Deciding on appropriate VPN application for remote Ham radio station network","authors":"Kemal Hajdarevic, Haris Smajlagic, Sead Celjo, Emil Tafro","doi":"10.1109/TELFOR.2013.6716409","DOIUrl":"https://doi.org/10.1109/TELFOR.2013.6716409","url":null,"abstract":"Rationale for this work was driven by need to create secure remote repository for contest log activities of radio amateurs (Hams) and remote access to Ham radio where data integrity would be protected using VPN. Owners of remote Ham radio stations have to consider overhead of specific technology such as VPN prior making decision to use it. In this paper are presented results of VPN performance measurement on different network types and different VPN applications.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129671115","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
Development of OFDM based secondary link: Some experimental results on USRP N210 platform 基于OFDM的二次链路的发展:USRP N210平台上的一些实验结果
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.5937/TELFOR1401030J
Milos Janjic, M. Brković, M. Eric
{"title":"Development of OFDM based secondary link: Some experimental results on USRP N210 platform","authors":"Milos Janjic, M. Brković, M. Eric","doi":"10.5937/TELFOR1401030J","DOIUrl":"https://doi.org/10.5937/TELFOR1401030J","url":null,"abstract":"Some experimental results of development of the concept and practical implementation of OFDM based secondary cognitive link are presented in this paper. Secondary link is realized using USRP N210 platforms. Several algorithms to overcome transmission problems are used, such as frequency offset compensation, time synchronization and channel estimation. Also cognitive feature of changing transmission parameters is implemented.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129130617","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: 8
Applicability of the Gauss' law on Lightning channel corona sheath modeling 高斯定律在闪电通道电晕鞘层建模中的适用性
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.1109/TELFOR.2013.6716320
S. Markovic, J. Cvetic, D. Pavlović, M. Ignjatović
{"title":"Applicability of the Gauss' law on Lightning channel corona sheath modeling","authors":"S. Markovic, J. Cvetic, D. Pavlović, M. Ignjatović","doi":"10.1109/TELFOR.2013.6716320","DOIUrl":"https://doi.org/10.1109/TELFOR.2013.6716320","url":null,"abstract":"Generalized lightning traveling current source return stroke model (GTCS) has been used to calculate the dynamics of lightning channel corona sheath surrounding thin channel core during the return stroke stage. Using measured electric field waveforms of Miki et al., 2002 in the immediate vicinity of the lightning channel, the channel discharge function vs. time is calculated. The applicability of the simple form of the Gauss' law on lightning channel corona sheath modeling is examined. The conditions for the validity of the expressions of the electric field inside and outside the corona sheath are derived. It is concluded that the simple form of the Gauss' law can be successfully used for the corona sheath modeling if the radial distance of the measuring point from the channel core is small compared to its vertical position.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129339168","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
Implementation of a social gaming cloud service for mobile and TV devices 为手机和电视设备提供社交游戏云服务
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.1109/TELFOR.2013.6716400
Lazar Trsic, Nikola Veljkovic, Marija Punt, M. Bjelica, Mladen Predojevic
{"title":"Implementation of a social gaming cloud service for mobile and TV devices","authors":"Lazar Trsic, Nikola Veljkovic, Marija Punt, M. Bjelica, Mladen Predojevic","doi":"10.1109/TELFOR.2013.6716400","DOIUrl":"https://doi.org/10.1109/TELFOR.2013.6716400","url":null,"abstract":"This paper presents an implementation of a social gaming cloud service allowing mobile and TV devices to connect to as clients. Development of this service will allow players from multiple homes to play together, using TV devices as main displays and mobile devices as game controllers. In order to evaluate the service, an example game was developed and server response times and server load were measured.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123519738","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
Investigating “the experience effect” in audio quality assessment 研究音频质量评估中的“体验效应”
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.1109/TELFOR.2013.6716343
A. Smimite, Azeddine Beghdadi, Ken Chen
{"title":"Investigating “the experience effect” in audio quality assessment","authors":"A. Smimite, Azeddine Beghdadi, Ken Chen","doi":"10.1109/TELFOR.2013.6716343","DOIUrl":"https://doi.org/10.1109/TELFOR.2013.6716343","url":null,"abstract":"The study reported in this paper aims to investigate the integration of the experience effect in audio quality assessment methods. During our subjective tests, we have noticed that a low quality audio signal affect strongly and negatively the listeners' opinion on the next-coming test sequences, even if they are of higher quality. This leads eventually to erroneous data and consequently to a misevaluation of audio codecs and systems. This phenomenon called here, the “experience effect”, is presented and analyzed through an enriched experimental framework, with suggestions for statistical approaches to smooth out raw data and get more reliable results. This paper is a snapshot of our ongoing work on the development of new quality assessment methodologies, combining both the perceptual and behavioral aspects of human response.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120899375","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
A simulation model for data transmission over arbitrary voice channels 任意语音信道上数据传输的仿真模型
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.1109/TELFOR.2013.6716248
Nikola Cveticanin, M. Perić, Miroslav Obradović, B. Bozilovic
{"title":"A simulation model for data transmission over arbitrary voice channels","authors":"Nikola Cveticanin, M. Perić, Miroslav Obradović, B. Bozilovic","doi":"10.1109/TELFOR.2013.6716248","DOIUrl":"https://doi.org/10.1109/TELFOR.2013.6716248","url":null,"abstract":"This paper describes one simulation tool created for data transmission over arbitrary voice channels. The arbitrary voice channel is simulated with various speech codecs with specified error patterns. This type of signal processing with transmission errors makes an arbitrary voice channel nonlinear and non-time invariant. Therefore, standard modulation techniques predominantly tailored for band limited linear diction channels with additive white Gaussian noise are not suitable. As a simulation example we give performance analysis for continuous phase 2FSK and 4FSK.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"322 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116210852","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
Automatic emotional speech recognition in Serbian language 塞尔维亚语自动情感语音识别
2013 21st Telecommunications Forum Telfor (TELFOR) Pub Date : 2013-11-01 DOI: 10.1109/TELFOR.2013.6716267
M. Bojanic, V. Delić
{"title":"Automatic emotional speech recognition in Serbian language","authors":"M. Bojanic, V. Delić","doi":"10.1109/TELFOR.2013.6716267","DOIUrl":"https://doi.org/10.1109/TELFOR.2013.6716267","url":null,"abstract":"The paper addresses automatic emotional speech recognition (ESR) with an emphasis on finding the most efficient set of features of emotional speech. It should be noted that research was conducted on the corpus of emotional speech recorded in Serbian, which is the first of its kind in Serbian language. Our research was focused on the comparison of discrimination capability of prosodic features, spectral features, as well as their combination in order to assess the significance of specified features for ESR and form an efficient feature vector for ESR. The motivation for this study stemmed from the growing need to put human-computer dialogue to a higher level of understanding of the broader communication context including nonverbal messages and human emotions.","PeriodicalId":121560,"journal":{"name":"2013 21st Telecommunications Forum Telfor (TELFOR)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124130917","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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