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2011 34th International Conference on Telecommunications and Signal Processing (TSP)最新文献

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The effect of incomplete sessions on peer-assisted stored video streaming 不完整会话对对等辅助存储视频流的影响
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043774
M. Máté, R. Vida, A. Mihály
{"title":"The effect of incomplete sessions on peer-assisted stored video streaming","authors":"M. Máté, R. Vida, A. Mihály","doi":"10.1109/TSP.2011.6043774","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043774","url":null,"abstract":"Video on demand systems are going to be important services of the future Internet. To achieve scalability and fault tolerance, these systems should rely on distributed video delivery schemes, using peer-to-peer (P2P) networks built among the clients. However, generic P2P data sharing protocols cannot guarantee timely arrival of the video segments. Therefore, they must be adapted to video streaming by restricting P2P delivery into a download window. In this paper we investigate the effect of the frequently occurring phenomenon of incomplete sessions on the efficiency of stored video streaming via P2P data distribution. Through theoretical considerations and a simulation study, we've found that with a P2P download window placed at a fixed distance from the playback position the superfluous downloads can be avoided, and the efficiency of the P2P distribution can be increased.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"43 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":"132870644","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
The role of the superior order GLCM in improving the automatic diagnosis of the hepatocellular carcinoma based on ultrasound images 高阶GLCM在提高肝细胞癌超声图像自动诊断中的作用
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043658
D. Mitrea, S. Nedevschi, R. Badea
{"title":"The role of the superior order GLCM in improving the automatic diagnosis of the hepatocellular carcinoma based on ultrasound images","authors":"D. Mitrea, S. Nedevschi, R. Badea","doi":"10.1109/TSP.2011.6043658","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043658","url":null,"abstract":"The hepatocellular carcinoma (HCC) is the most frequent malignant liver tumor. The golden standard for HCC diagnosis is the needle biopsy, but this is an invasive, dangerous method. We aim to develop computerized, non-invasive techniques for the automatic diagnosis of HCC, based on information obtained from ultrasound images. The texture is an important property of the internal organs tissue, able to provide subtle information about the pathology. We previously defined the textural model of HCC, consisting in the exhaustive set of the relevant textural features, appropriate for HCC characterization and in the specific values of these features. In this work, we analyze the role that the superior order Gray Level Cooccurrence Matrices (GLCM) and the associated parameters have in the improvement of HCC characterization and automatic diagnosis. We also determine the best spatial relation between the pixels that leads to the highest performances, for the third and fifth order GLCM.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"6 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":"115762220","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
Open-packet analyser platform for wireless sensor networks based on IEEE 802.15.4 基于IEEE 802.15.4的无线传感器网络开包分析平台
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043754
Lubomir Mraz, D. Komosny, V. Červenka, Patrik Moravek, Milan Simek
{"title":"Open-packet analyser platform for wireless sensor networks based on IEEE 802.15.4","authors":"Lubomir Mraz, D. Komosny, V. Červenka, Patrik Moravek, Milan Simek","doi":"10.1109/TSP.2011.6043754","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043754","url":null,"abstract":"Wireless sensor networks consist of dozens of tiny constrained devices, which transfer data encapsulated into the packets over the air. It is crucial to have a packet analyser at the hand for real development and debug purposes. This article gives an overview of the available tools for packet analysis and ongoing research focused on open packet analyser development. We proposed two platforms one with Ethernet and second one with a serial interface. The latter has been evaluated. The results show that the analyser is able to work with the maximum throughput for IEEE 802.15.4.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"4 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":"124625869","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
Analysis of random and burst error codes in 2-state Markov channels 二态马尔可夫信道中随机和突发错误码的分析
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043747
G. Haßlinger, O. Hohlfeld
{"title":"Analysis of random and burst error codes in 2-state Markov channels","authors":"G. Haßlinger, O. Hohlfeld","doi":"10.1109/TSP.2011.6043747","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043747","url":null,"abstract":"Markov chains are a popular means to capture correlated random processes for characterization and analysis of error pattern or bursty traffic in data transmission. The performance evaluation of communication protocols based on Markov models is tractable with limited state space and often depends on efficient implementation. Simulation or other methods have to be adopted for system of higher complexity. We study the effect of bit errors on transmitted packets for Markov error processes in the presence of error detecting or error correcting codes. We show that the evaluation for 2-state Markov channels leads the same 2-state channel characteristics also for packet errors, where parameters are determined by a recursive and closed form solution depending on the parameters of the bit error channel. Computation schemes are derived for random and burst error detecting and correcting codes whose computation effort is shown to be moderate and generally tractable for usual packet sizes in telecommunication.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"333 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":"116124943","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
Current-mode precision full-wave rectifier using two WTA cells 电流模式精密全波整流器使用两个WTA细胞
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043716
J. Koton, A. Lahiri, N. Herencsar, K. Vrba
{"title":"Current-mode precision full-wave rectifier using two WTA cells","authors":"J. Koton, A. Lahiri, N. Herencsar, K. Vrba","doi":"10.1109/TSP.2011.6043716","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043716","url":null,"abstract":"In this paper a fully CMOS implementation of current-mode full-wave precision rectifier is presented. The structure is generally based on the recently presented Lazzaro's winner-takes-all (WTA) circuit. The rectifier has been implemented using the 0.35 μm CMOS technology and its behavior verified by SPICE. The simulation results shown feasibility to process signals of frequencies up to 20 MHz.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"13 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":"129375858","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: 9
Secure authentication and key establishment in the SIP architecture SIP架构中的安全认证和密钥建立
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043786
L. Malina, M. Zukal
{"title":"Secure authentication and key establishment in the SIP architecture","authors":"L. Malina, M. Zukal","doi":"10.1109/TSP.2011.6043786","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043786","url":null,"abstract":"This article deals with security features of SIP and focuses on advanced authentication and key establishment methods. These methods are described and a proposal of comprehensive security for the SIP architecture is presented in this article. The solution provides strong secure authentication of SIP users and protects against various attacks occurring in the SIP architecture. Furthermore, our proposal is implemented and tested. The experimental results from our proof of concept implementation are presented at the end of the text. Moreover, the conventional HTTP Digest method is also implemented and its performance is compared with methods in the proposal.","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":"131352127","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: 6
Filterbank modulation techniques and its utilization in ADSL systems 滤波器组调制技术及其在ADSL系统中的应用
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043677
Ondrej Krajsa, P. Silhavy, P. Sysel
{"title":"Filterbank modulation techniques and its utilization in ADSL systems","authors":"Ondrej Krajsa, P. Silhavy, P. Sysel","doi":"10.1109/TSP.2011.6043677","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043677","url":null,"abstract":"The multicarrier modulations (MCM) became widely used and have been applied to wire and wireless transmission systems in recent years. This modulation techniques enable a near-perfect utilization of the provided frequency band on metallic cables and they also eliminate multipath propagation effect in terrestrial transmission. Mainly used implementations of MCM are Discrete MultiTone (DMT) and Orthogonal Frequency Division Multiplexing (OFDM). These approaches have also disadvantages, which have led to seeking new approaches to the implementation of the MCM modulation scheme. One of them is the Filtered MultiTone Modulation (FMT). In the article, the channel equalization in half-overlapped and non-overlapped FMT modulation will be compared.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"34 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":"133105033","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
Modified method for optimization of image registration 一种改进的图像配准优化方法
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043673
L. Bolecek, V. Rícný, M. Slanina
{"title":"Modified method for optimization of image registration","authors":"L. Bolecek, V. Rícný, M. Slanina","doi":"10.1109/TSP.2011.6043673","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043673","url":null,"abstract":"The paper deals with the topic of image registration. Image registration is important operation in image processing. Registration accuracy has essential importance for the quality of further processing of images in e.g. 3D processing. This paper provides one new cost function. Experimental results performed in this work show that this newly proposed function has the advantage of low complexity in comparison with the present-day methods. The function has good reliability and fast convergence. The paper presents a specific modification of particle swarm optimization for the evaluation of the results as well. The paper provides a novel approach using pseudo-color representation of image. Pseudo-color representation offers high contrast in images.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"9 23","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131839820","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
Hybrid device interoperability in intelligent building systems 智能楼宇系统中的混合设备互操作性
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043739
Szalontai Levente, L. Festila
{"title":"Hybrid device interoperability in intelligent building systems","authors":"Szalontai Levente, L. Festila","doi":"10.1109/TSP.2011.6043739","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043739","url":null,"abstract":"Intelligent Building Management Systems (BMSs) are more widely used in various buildings that are extending beyond usual networks, including any imaginable electronic device. There are many BMSs, each one having their own architecture using different protocols, standards and working on various communication interfaces like cable, power line or radio frequency. There are many devices that are communication enabled but due to lack of a unifying standard interoperability between devices is impossible. Founded by this observation the basic idea of this paper is to propose a solution for this problem by using Software Defined Radio (SDR) technology to design a hybrid (wired/wireless) gateway platform. A test system had been developed to test gateway communication with some wireless sensors. This solution could bring a higher level of flexibility to BMSs and therefore, various devices working on future standards and protocols would be easily integrated into current BMSs without major modifications.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"35 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":"130638997","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
Proposal and performance analysis of a novel preamble-based SNR estimation algorithm 一种新的基于前导信噪比估计算法的提出与性能分析
2011 34th International Conference on Telecommunications and Signal Processing (TSP) Pub Date : 2011-10-13 DOI: 10.1109/TSP.2011.6043764
Saransh Malik, Sherlie Portugal, Changwoo Seo, Cheolsung Kim, I. Hwang
{"title":"Proposal and performance analysis of a novel preamble-based SNR estimation algorithm","authors":"Saransh Malik, Sherlie Portugal, Changwoo Seo, Cheolsung Kim, I. Hwang","doi":"10.1109/TSP.2011.6043764","DOIUrl":"https://doi.org/10.1109/TSP.2011.6043764","url":null,"abstract":"The latest wireless communication systems focus on developing MIMO-OFDM systems that allow the transmission of very high data rates in fading environments. We can optimize these systems even further by setting the modulation and coding adaptively according to the channel conditions, and by using sub-carrier frequency and power allocation techniques. The overall system performance depends on the accuracy and delay of the channel state information (CSI). In this paper, we propose a signal-to-noise ratio (SNR) estimation algorithm based on preamble transmission. Through simulations of several channel environments, we prove that our proposed algorithm is more accurate than conventional algorithms.","PeriodicalId":341695,"journal":{"name":"2011 34th International Conference on Telecommunications and Signal Processing (TSP)","volume":"319 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":"134234928","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
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