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The Third Advanced International Conference on Telecommunications (AICT'07)最新文献

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An Overview of the Interpretations of Trust and Reputation 信任与声誉的解释综述
The Third Advanced International Conference on Telecommunications (AICT'07) Pub Date : 2007-05-13 DOI: 10.1109/AICT.2007.11
F. Hussain, E. Chang
{"title":"An Overview of the Interpretations of Trust and Reputation","authors":"F. Hussain, E. Chang","doi":"10.1109/AICT.2007.11","DOIUrl":"https://doi.org/10.1109/AICT.2007.11","url":null,"abstract":"In this paper we present an overview of the definitions of the terms of trust and reputation from the literature. Trust and reputation have been defined in different ways by the various researchers. As a result of these various definitions of trust and reputation there is a lot of confusion regarding what these terms actually mean. Additionally in the literature there is no work towards collecting all the definitions of trust and reputation. In this paper we discuss and present an overview of the terms of trust and reputation from the literature.","PeriodicalId":334924,"journal":{"name":"The Third Advanced International Conference on Telecommunications (AICT'07)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121349578","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: 16
An Accurate Pulse-Level Timing Acquisition Scheme for UWB Signals 一种用于超宽带信号的精确脉冲级定时采集方案
The Third Advanced International Conference on Telecommunications (AICT'07) Pub Date : 2007-05-13 DOI: 10.1109/AICT.2007.9
Qiang Sun, Tiejun Lv
{"title":"An Accurate Pulse-Level Timing Acquisition Scheme for UWB Signals","authors":"Qiang Sun, Tiejun Lv","doi":"10.1109/AICT.2007.9","DOIUrl":"https://doi.org/10.1109/AICT.2007.9","url":null,"abstract":"One of the biggest challenges in ultra-wideband (UWB) radio is the accurate timing acquisition for the receiver. In this paper, we develop a simple and accurate algorithm based on minimum average error probability (MAEP) of coherent detector for pulse-level synchronization. The multipath interference (MI) problem for timing offset estimation is considered. The MSE and BER performances of our proposed scheme are simulated. The results show that our algorithm outperforms the algorithm based on maximum correlator output (MCO) in multipath channels.","PeriodicalId":334924,"journal":{"name":"The Third Advanced International Conference on Telecommunications (AICT'07)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128274552","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 PTS for PAPR Reduction in OFDM Systems 改进的PTS用于OFDM系统中PAPR的降低
The Third Advanced International Conference on Telecommunications (AICT'07) Pub Date : 2007-05-13 DOI: 10.1109/AICT.2007.26
Yue Xiao, Qingsong Wen, Xia Lei, Shaoqian Li
{"title":"Improved PTS for PAPR Reduction in OFDM Systems","authors":"Yue Xiao, Qingsong Wen, Xia Lei, Shaoqian Li","doi":"10.1109/AICT.2007.26","DOIUrl":"https://doi.org/10.1109/AICT.2007.26","url":null,"abstract":"Partial transmit sequence (PTS) is a promising technique for reducing the high peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. In PTS, multiple candidate signals are generated and the optimal signal with the lowest PAPR is selected for transmission. One drawback of PTS is that parts of the candidate signals are strongly correlated so as to degrade the PAPR reduction performance. The other is the high complexity. In this paper, an improved scheme is presented to reduce the correlation among the candidate signals, so as to improve the PAPR reduction performance. Furthermore, a threshold is introduced to reduce the complexity. Theoretical analysis and simulation results show that the new scheme can achieve higher PAPR reduction but with reduced complexity compared to conventional PTS.","PeriodicalId":334924,"journal":{"name":"The Third Advanced International Conference on Telecommunications (AICT'07)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115715423","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: 16
Managing User Preferences for Personalization in a Pervasive Service Environment 在普适服务环境中管理用户偏好以实现个性化
The Third Advanced International Conference on Telecommunications (AICT'07) Pub Date : 2007-05-13 DOI: 10.1109/AICT.2007.27
S. McBurney, M. H. Williams, N. Taylor, E. Papadopoulou
{"title":"Managing User Preferences for Personalization in a Pervasive Service Environment","authors":"S. McBurney, M. H. Williams, N. Taylor, E. Papadopoulou","doi":"10.1109/AICT.2007.27","DOIUrl":"https://doi.org/10.1109/AICT.2007.27","url":null,"abstract":"The importance of personalization in many application areas is now well accepted and this is true of both telecommunications and web services. One important research area which spans telecommunications and web services is that of pervasive systems. Here the role of personalization is essential in order for a pervasive system to function effectively without the need for unnecessary interaction with the user and for improving the user experience by providing appropriate support for the actions taken by the user. However, in order to provide personalization in such a system the system needs to build up an adequate set of user preferences. This is a non-trivial task. This paper describes briefly the approaches to personalization included in the development of the pervasive system in the Daidalos project. It discusses some of the strategies involved in managing user preferences and the approaches being taken in the Daidalos system. In particular in the second phase a novel approach is proposed to deal with this problem.","PeriodicalId":334924,"journal":{"name":"The Third Advanced International Conference on Telecommunications (AICT'07)","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124850745","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: 21
Efficient Wavelet Packet Modulation for Wireless Communication 无线通信中的高效小波包调制
The Third Advanced International Conference on Telecommunications (AICT'07) Pub Date : 2007-05-13 DOI: 10.1109/AICT.2007.21
M. Gautier, J. Lienard
{"title":"Efficient Wavelet Packet Modulation for Wireless Communication","authors":"M. Gautier, J. Lienard","doi":"10.1109/AICT.2007.21","DOIUrl":"https://doi.org/10.1109/AICT.2007.21","url":null,"abstract":"Based on the good time-frequency localization of the pulse shaping, it is possible to build a multicarrier modulation that reduces both narrowband interferences and multipath channel interferences. In this paper, the given solution is based on wavelet theory: wavelet packet based multicarrier modulation is introduced and compared to the useful orthogonal frequency domain multiplexing (OFDM) modulation in a wireless environment with narrowband interferences and multipath channel interferences. Simulations show that the use of wavelet is more robust to narrowband interferences than the OFDM modulation. For multi- path transmission, simulations show that the use of complex wavelet outperforms the use of real one and outperforms the OFDM modulation when the cyclic prefix technique is not used.","PeriodicalId":334924,"journal":{"name":"The Third Advanced International Conference on Telecommunications (AICT'07)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128489548","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: 56
Periodical Mark Forcing Schemes for Hunting-Free Framer Design for Digital Transmission and Multiplexing 面向数字传输和复用的无寻猎帧设计的周期标记强制方案
The Third Advanced International Conference on Telecommunications (AICT'07) Pub Date : 2007-05-13 DOI: 10.1109/AICT.2007.36
Y. Takasaki
{"title":"Periodical Mark Forcing Schemes for Hunting-Free Framer Design for Digital Transmission and Multiplexing","authors":"Y. Takasaki","doi":"10.1109/AICT.2007.36","DOIUrl":"https://doi.org/10.1109/AICT.2007.36","url":null,"abstract":"Efficient design methods of hunting-free framing codes are investigated as extensions of previous results based on sliding header schemes. First, the principles of multipled block codes (MBCs) are overviewed to show their capacities for realizing hunting-free refraining. Then a sliding header method that considerably simplify the design of hunting-free framers is overviewed. Finally, the above design methods are applied to generalized version of hunting-free codes to investigate a periodical mark forcing scheme which can drastically simplify design procedure.","PeriodicalId":334924,"journal":{"name":"The Third Advanced International Conference on Telecommunications (AICT'07)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129040012","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 Comparison of Three Programming Models for Telecom Service Composition 电信业务组合三种规划模型的比较
The Third Advanced International Conference on Telecommunications (AICT'07) Pub Date : 2007-05-01 DOI: 10.1109/AICT.2007.1
Yuan Yuan, J. Wen, Wei Li, Bing Zhang
{"title":"A Comparison of Three Programming Models for Telecom Service Composition","authors":"Yuan Yuan, J. Wen, Wei Li, Bing Zhang","doi":"10.1109/AICT.2007.1","DOIUrl":"https://doi.org/10.1109/AICT.2007.1","url":null,"abstract":"Service composition technologies are very important to telecom industry today since they allow application developers to make use of existing services as building blocks to create new services in a rapid and flexible manner in order to catch the fast changing market dynamics. The building block services are usually telecom network capabilities exposed through various protocols (e.g., SIP, Parlay) as well as IT software functions provided through certain interfaces (e.g., RPC, Web Services). Currently, most of telecom applications are created as program logic in pure programming languages (e.g., Java) or by SIP Servlet, so as to satisfy functional and non-functional requirements. Although BPEI is adopted in service composition more widely, whether it is a good solution for telecom domain is still controversial. In this paper, we experiment in three approaches - SIP Servlet, pure programming language of Java and BPEI - to build a same composite service with analysis on developer experience. Preliminary conclusions are drawn based on difference comparison of these composition models in terms of programming efforts and service runtime performance.","PeriodicalId":334924,"journal":{"name":"The Third Advanced International Conference on Telecommunications (AICT'07)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132653322","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: 16
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