2008 Fourth Advanced International Conference on Telecommunications最新文献

Optical Cross Add and Drop Multiplexer: An Analytical Approach 光交叉加丢复用器:一种分析方法

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.44

M. Ab-Rahman, M. F. Ibrahim, Ashrani Aizzuddin Abd. Rahni, S. Shaari, K. Jumari

引用次数: 2

Effective and Open System for Wavelengths Monitoring 波长监测的有效开放系统

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.77

A. Binczewski, L. Grzesiak, E. Kenny, K. Stanecki, M. Stroinski, R. Szuman, S. Trocha, J. Weglarz

引用次数: 0

Can VoIP Live up to the QoS Standards of Traditional Wireline Telephony? VoIP能达到传统有线电话的QoS标准吗?

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.75

Justus Bross, C. Meinel

{"title":"Can VoIP Live up to the QoS Standards of Traditional Wireline Telephony?","authors":"Justus Bross, C. Meinel","doi":"10.1109/AICT.2008.75","DOIUrl":"https://doi.org/10.1109/AICT.2008.75","url":null,"abstract":"The PSTN is the ultimate benchmark for voice quality in communication networks. When the first VoIP solution was introduced in 1996, the Internet's audio transport capabilities were far below the benchmark set by public-network standards and therefore much lower per-forming than traditional telephony. Considering that Internet Telephony is constantly being promoted as the next killer application in Next Generation Networks and as the potential substitute for current telephony technologies, voice quality however needs to at least be equal to the level ISDN telephony provides at the moment. The following comparison of VoIP and traditional telephony QoS levels and their corresponding performance development revealed the following: QoS of Internet Telephony was intolerably low when first introduced, compared to the standards set by the traditional telephony. However, these shortcomings were largely factored out and optimised through numerous QoS enhancing methods, meaningful traffic engineering and network planning. This paper proves that QoS of today's VoIP solutions is fully satisfactory for end-users and that VoIP therefore constitutes a potential substitute for traditional telephony services.","PeriodicalId":105735,"journal":{"name":"2008 Fourth Advanced International Conference on Telecommunications","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127259448","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

WSSU: High Performance Wireless Self-Contained, Surveillance Unit; an Ad Hoc Video Surveillance System WSSU:高性能无线独立监控单元;一个视频监控系统

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.72

S. Sutor, F. Matusek, R. Reda

引用次数: 8

Intelligent Mobile Agent Middleware for Wireless Sensor Networks: A Real Time Application Case Study 面向无线传感器网络的智能移动代理中间件:实时应用案例研究

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.51

Dimitrios Georgoulas, K. Blow

{"title":"Intelligent Mobile Agent Middleware for Wireless Sensor Networks: A Real Time Application Case Study","authors":"Dimitrios Georgoulas, K. Blow","doi":"10.1109/AICT.2008.51","DOIUrl":"https://doi.org/10.1109/AICT.2008.51","url":null,"abstract":"In-Motes is a mobile agent middleware that generates an intelligent framework for deploying applications in wireless sensor networks (WSNs). in- motes is based on the injection of mobile agents into the network that can migrate or clone following specific rules and performing application specific tasks. By doing so, each mote is given a certain degree of perception cognition and control, forming the basis for its intelligence. We have developed, implemented and evaluated a real time application in a dynamic environment to determine how well in-motes achieves its goals. Namely, in-motes Bins is an agent based in- motes application for environmental monitoring sensing light and temperature variations. Using in-motes we were able to create and rapidly deploy our application on a WSN consisting of 10 MICA2 motes. Our application was tested in a wine store for a period of four months. In this paper we present the in-motes bins application and provide a detailed evaluation of its implementation. We also present a detailed analysis of in-motes middleware in regards of its efficiency, adaptability and reliability inside the WSN.","PeriodicalId":105735,"journal":{"name":"2008 Fourth Advanced International Conference on Telecommunications","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122646119","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: 22

Degradation of BER by Group Delay in Digital Phase Modulation 数字相位调制中群延迟对误码率的影响

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.31

A. Azizzadeh, L. Mohammadi

引用次数: 20

A New Class of Adaptive Wireless Push Systems Using Multiple Smart Antennas 一类使用多智能天线的新型自适应无线推送系统

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.24

V. Kakali, G. Papadimitriou, Petros Nicopolitidis, A. Pomportsis

引用次数: 0

Convolution Algorithm for State-Passage Probabilities Calculation in Limited-Availability Group 有限可用群中状态-通道概率计算的卷积算法

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.45

M. Głąbowski, A. Kaliszan, M. Stasiak

引用次数: 7

Uplink Coverage-Capacity Estimation Using Analysis and Simulation

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.58

S. Datta, M. Imran, C. Tzaras

{"title":"Uplink Coverage-Capacity Estimation Using Analysis and Simulation","authors":"S. Datta, M. Imran, C. Tzaras","doi":"10.1109/AICT.2008.58","DOIUrl":"https://doi.org/10.1109/AICT.2008.58","url":null,"abstract":"The design and optimisation of a Wideband Code Division Multiple Access (WCDMA) based third generation (3G) system is significantly different from the techniques used for planning a second generation (2G) network. It has been established in literature that coverage or capacity of the 3G system cannot be planned individually because of the interference limited nature of the air-interface. Estimation of interference is an important step in determining the coverage or capacity of a cell. The amount of interference seen at each receiver location is highly dependent on transmit powers, which in turn depend on the closed loop power control in uplink and downlink. It is possible to estimate capacity of a cell fairly accurately using static simulation when the location information of transmitters and receivers are available. Even though stochastic models using statistical distribution of transmit powers and interferences cannot take into account all the unique characteristics of the Universal Mobile Telecommunication System (UMTS) simultaneously, they are useful in estimating performance figures during radio network planning for UMTS systems. In this paper we have studied the functional relationship between coverage, capacity and other-cell interference in a multicellular environment and compared the results of statistical analysis with the performance figures computed using static system level simulator.","PeriodicalId":105735,"journal":{"name":"2008 Fourth Advanced International Conference on Telecommunications","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121637897","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

Fault Tolerant Hardware for High Performance Signal Processing 高性能信号处理的容错硬件

2008 Fourth Advanced International Conference on Telecommunications Pub Date : 2008-06-08 DOI: 10.1109/AICT.2008.41

S. Erdogan, T. Shaneyfelt, G. Ng, A. Wahab

引用次数: 1