首页 > 最新文献

2009 International Conference on Information and Communication Technologies最新文献

英文 中文
Applying centroid based adjustment to kernel based object tracking for improving localization 将基于质心的调整应用于基于核的目标跟踪以提高定位
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267188
R. Mehmood, Muhammad Usman Ali, I. A. Taj
In recent studies kernel based object tracking (KBOT) using Bhattacharya coefficient as similarity measure is shown to be robust and efficient object tracking technique. Image histogram provides a compact summarization of the distribution of data in an image. Due to computational efficiency; histogram has been successfully applied in KBOT based tracking algorithms. However without spatial or shape information, similar objects of different color may be indistinguishable based solely on histogram comparisons. The application of meanshift algorithm (the core of KBOT) on 1-D low level features of histogram may converge to false local maxima and cause inaccuracy of target localization. In this paper we presented a robust and efficient tracking approach using structural features along with histogram based Bhattacharya coefficient similarity measure for tracking non rigid objects. It is proposed that integrating the edge based target information as post processing step for updating estimated mean shift centroid in KBOT improves the localization problem. Experimental results show the updated algorithm has achieve more precise tracking results as compared to original kernel based object tracking
近年来的研究表明,以Bhattacharya系数为相似性度量的基于核的目标跟踪(KBOT)是一种鲁棒、高效的目标跟踪技术。图像直方图提供了图像中数据分布的简洁摘要。由于计算效率;直方图已成功应用于基于KBOT的跟踪算法中。然而,如果没有空间或形状信息,仅通过直方图比较可能无法区分不同颜色的相似物体。均值移位算法(KBOT的核心)在直方图1-D低阶特征上的应用可能会收敛到虚假的局部极大值,导致目标定位不准确。在本文中,我们提出了一种基于结构特征和基于直方图的Bhattacharya系数相似度量来跟踪非刚性物体的鲁棒高效跟踪方法。提出将基于边缘的目标信息作为后处理步骤,对KBOT中估计的平均偏移质心进行更新,以改善定位问题。实验结果表明,与原始的基于核的目标跟踪相比,改进后的算法获得了更精确的跟踪结果
{"title":"Applying centroid based adjustment to kernel based object tracking for improving localization","authors":"R. Mehmood, Muhammad Usman Ali, I. A. Taj","doi":"10.1109/ICICT.2009.5267188","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267188","url":null,"abstract":"In recent studies kernel based object tracking (KBOT) using Bhattacharya coefficient as similarity measure is shown to be robust and efficient object tracking technique. Image histogram provides a compact summarization of the distribution of data in an image. Due to computational efficiency; histogram has been successfully applied in KBOT based tracking algorithms. However without spatial or shape information, similar objects of different color may be indistinguishable based solely on histogram comparisons. The application of meanshift algorithm (the core of KBOT) on 1-D low level features of histogram may converge to false local maxima and cause inaccuracy of target localization. In this paper we presented a robust and efficient tracking approach using structural features along with histogram based Bhattacharya coefficient similarity measure for tracking non rigid objects. It is proposed that integrating the edge based target information as post processing step for updating estimated mean shift centroid in KBOT improves the localization problem. Experimental results show the updated algorithm has achieve more precise tracking results as compared to original kernel based object tracking","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129585071","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: 10
Use of information and mobile computing technologies in healthcare facilities of Saudi Arabia 沙特阿拉伯保健设施中信息和移动计算技术的使用情况
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267177
A. A. Siddiqi, Munir Ahmed, Y. Alginahi, Abdulrahman Alharby
Information technology forms an important part of the healthcare solution. Accurate and up-to-date information is essential to continuous quality improvement in any organization, and particularly so in an area as complex as healthcare. Therefore, diverse information systems must be integrated across the healthcare enterprise. The knowledge base in the medical field is large, complex, and growing rapidly. It includes scientific knowledge, as well as familiarity with the day-to-day business of providing healthcare. It is crucial to identify the processes in the healthcare sector that would most benefit from the support of information technology. This study is focused on the analysis and design of Comprehensive Patient Healthcare System (CPHS), which comprises two large subsystems, Computerized Patient Record System (CPRS) and Mobile Computing Clinical System (MCCS). It is anticipated that, this innovated system would not only serve as an application of state-of-the-art information and mobile computing technologies, but it would also provide clinical services at point of care in Saudi Arabia hospitals. Use of such technologies with highly efficient techniques for essential information gathering in a timely and cost effective manner in hospital sites is critical in order to understand how to enhance quality health care services to improve the life of patients and rapid decisions making. The design and development of CPHS would therefore pave the way for opening new venues in which such highly advanced information and mobile computing technologies are employed in the hospitals and other sectors beyond the field of medical care.
信息技术是医疗保健解决方案的重要组成部分。准确和最新的信息对于任何组织的持续质量改进都是必不可少的,特别是在像医疗保健这样复杂的领域。因此,必须在整个医疗保健企业中集成不同的信息系统。医学领域的知识库庞大、复杂且增长迅速。它包括科学知识,以及对提供医疗保健的日常业务的熟悉。确定医疗保健部门中哪些流程将从信息技术的支持中获益最多,这一点至关重要。本研究的重点是分析和设计综合病人医疗保健系统(CPHS),该系统包括两大子系统,电脑化病人档案系统(CPRS)和移动计算临床系统(MCCS)。预计这一创新系统不仅将应用最先进的信息和移动计算技术,而且还将在沙特阿拉伯医院的护理点提供临床服务。为了了解如何提高卫生保健服务质量,改善病人的生活和快速决策,在医院现场及时和经济有效地收集基本信息的高效技术和使用这些技术至关重要。因此,公共卫生服务中心的设计和发展将为开设新的场所铺平道路,这些场所将在医院和医疗保健领域以外的其他部门采用这种高度先进的信息和移动计算技术。
{"title":"Use of information and mobile computing technologies in healthcare facilities of Saudi Arabia","authors":"A. A. Siddiqi, Munir Ahmed, Y. Alginahi, Abdulrahman Alharby","doi":"10.1109/ICICT.2009.5267177","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267177","url":null,"abstract":"Information technology forms an important part of the healthcare solution. Accurate and up-to-date information is essential to continuous quality improvement in any organization, and particularly so in an area as complex as healthcare. Therefore, diverse information systems must be integrated across the healthcare enterprise. The knowledge base in the medical field is large, complex, and growing rapidly. It includes scientific knowledge, as well as familiarity with the day-to-day business of providing healthcare. It is crucial to identify the processes in the healthcare sector that would most benefit from the support of information technology. This study is focused on the analysis and design of Comprehensive Patient Healthcare System (CPHS), which comprises two large subsystems, Computerized Patient Record System (CPRS) and Mobile Computing Clinical System (MCCS). It is anticipated that, this innovated system would not only serve as an application of state-of-the-art information and mobile computing technologies, but it would also provide clinical services at point of care in Saudi Arabia hospitals. Use of such technologies with highly efficient techniques for essential information gathering in a timely and cost effective manner in hospital sites is critical in order to understand how to enhance quality health care services to improve the life of patients and rapid decisions making. The design and development of CPHS would therefore pave the way for opening new venues in which such highly advanced information and mobile computing technologies are employed in the hospitals and other sectors beyond the field of medical care.","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130833071","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: 10
Power optimization of relay channels 中继通道的功率优化
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267181
F. Ahmed, Z. Howard
Relaying in wireless communication can improve power and quality of service. Multiple nodes share channel resources to achieve optimized power. We consider a model with fixed source, destination and relay nodes. Our model finds the optimal values for power transmission for direct and relayed transmitting nodes. In our problem we compare amplify and forward and decode and forward transmission protocols. Unlike other researchers who use constant achievable rates as objective function and power as constraint, we use the strategy of minimizing relay and source power with achievable and target rates as constraints. We simulate various scenarios and our results indicate optimal values for both source and relay transmission powers.
无线通信中的中继可以提高功率和服务质量。多个节点共享通道资源,实现功率优化。我们考虑一个具有固定源节点、目标节点和中继节点的模型。我们的模型找到了直接和中继传输节点的最优功率传输值。在我们的问题中,我们比较了放大和转发、解码和转发传输协议。与其他研究人员使用恒定的可实现速率作为目标函数和功率作为约束不同,我们使用最小化继电器和源功率的策略,以可实现速率和目标速率作为约束。我们模拟了各种场景,我们的结果表明了源和中继传输功率的最佳值。
{"title":"Power optimization of relay channels","authors":"F. Ahmed, Z. Howard","doi":"10.1109/ICICT.2009.5267181","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267181","url":null,"abstract":"Relaying in wireless communication can improve power and quality of service. Multiple nodes share channel resources to achieve optimized power. We consider a model with fixed source, destination and relay nodes. Our model finds the optimal values for power transmission for direct and relayed transmitting nodes. In our problem we compare amplify and forward and decode and forward transmission protocols. Unlike other researchers who use constant achievable rates as objective function and power as constraint, we use the strategy of minimizing relay and source power with achievable and target rates as constraints. We simulate various scenarios and our results indicate optimal values for both source and relay transmission powers.","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116572301","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
Considerations on the validity constraints for the bistatic SAR processing 双基地SAR处理有效性约束的思考
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267178
Q. Ul-Ann, O. Loffeld, H. Nies, Robert Wang
This paper gives some considerations on the validity constraints for spaceborne/airborne configurations, based on Loffeld's bistatic formula (LBF) for unequal azimuth contribution of transmitter and receiver phase terms.
基于发射端和接收端相位项方位角贡献不等的Loffeld双基地公式,对星载/机载构型的有效性约束进行了考虑。
{"title":"Considerations on the validity constraints for the bistatic SAR processing","authors":"Q. Ul-Ann, O. Loffeld, H. Nies, Robert Wang","doi":"10.1109/ICICT.2009.5267178","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267178","url":null,"abstract":"This paper gives some considerations on the validity constraints for spaceborne/airborne configurations, based on Loffeld's bistatic formula (LBF) for unequal azimuth contribution of transmitter and receiver phase terms.","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116990031","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
Formal modeling of trust in Semantic Grid Registry 语义网格注册中信任的形式化建模
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267211
S. Mahmood, S. Iftikhar, H. F. Ahmad, F. Mahmood
In this paper we have analyzed and developed a formal specification of a Trust Model in Semantic Grid Registry. This paper formalizes the basic requirements of a trust model in case of semantic grid registry. We have described the flow of operations of our system through links and processes in the system architecture. The system is formally modeled in Pi-Calculus. Finally we transformed the specification to Pi- ADL and generated code using Archware tool. We have already developed a Semantic Grid Registry.
本文分析并开发了语义网格注册中信任模型的形式化规范。本文形式化了语义网格注册下信任模型的基本要求。我们已经通过系统架构中的链接和流程描述了系统的操作流程。该系统在Pi-Calculus中正式建模。最后将规范转换为Pi- ADL,并使用Archware工具生成代码。我们已经开发了一个语义网格注册表。
{"title":"Formal modeling of trust in Semantic Grid Registry","authors":"S. Mahmood, S. Iftikhar, H. F. Ahmad, F. Mahmood","doi":"10.1109/ICICT.2009.5267211","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267211","url":null,"abstract":"In this paper we have analyzed and developed a formal specification of a Trust Model in Semantic Grid Registry. This paper formalizes the basic requirements of a trust model in case of semantic grid registry. We have described the flow of operations of our system through links and processes in the system architecture. The system is formally modeled in Pi-Calculus. Finally we transformed the specification to Pi- ADL and generated code using Archware tool. We have already developed a Semantic Grid Registry.","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131015517","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
Analytic network process applied to R&D project selection 网络分析法在研发项目选择中的应用
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267179
Murad Habib, R. Khan, J. L. Piracha
Research and development (R&D) project selection is a complex decision-making process. Risks and uncertainties are also associated with the investments and returns of R&D projects. This research paper illustrates an application of ANP (analytic network process). The analytic network process (ANP) is presented as a potentially valuable method to support the selection of projects in a research and development (R&D) environment. The AHP (Analytic Hierarchy Process) is employed to break down large unstructured decision problems into manageable and measurable components. The ANP, as the general form of AHP, is powerful to deal with complex decisions where interdependence exists in a decision model. The research paper discusses the use of the ANP, a general form of Saaty's analytic Network process, as a model to evaluate the value of competing R&D projects.
研发项目选择是一个复杂的决策过程。风险和不确定性也与研发项目的投资和回报有关。本文阐述了分析网络过程(ANP)的应用。分析网络过程(ANP)作为一种潜在的有价值的方法来支持研究与开发(R&D)环境中的项目选择。采用层次分析法(AHP)将大型非结构化决策问题分解为可管理和可测量的组成部分。作为AHP的一般形式,ANP在处理决策模型中存在相互依赖关系的复杂决策方面非常强大。本文讨论了使用ANP (Saaty分析网络过程的一种一般形式)作为模型来评估竞争研发项目的价值。
{"title":"Analytic network process applied to R&D project selection","authors":"Murad Habib, R. Khan, J. L. Piracha","doi":"10.1109/ICICT.2009.5267179","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267179","url":null,"abstract":"Research and development (R&D) project selection is a complex decision-making process. Risks and uncertainties are also associated with the investments and returns of R&D projects. This research paper illustrates an application of ANP (analytic network process). The analytic network process (ANP) is presented as a potentially valuable method to support the selection of projects in a research and development (R&D) environment. The AHP (Analytic Hierarchy Process) is employed to break down large unstructured decision problems into manageable and measurable components. The ANP, as the general form of AHP, is powerful to deal with complex decisions where interdependence exists in a decision model. The research paper discusses the use of the ANP, a general form of Saaty's analytic Network process, as a model to evaluate the value of competing R&D projects.","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115195442","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: 15
An open source service oriented Mobile Business Intelligence Tool (MBIT) 面向开放源码服务的移动商务智能工具(MBIT)
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267184
B. Sajjad, A. Mir, A. Khawar, F. Bashir, A. Tariq
Corporate executives require relevant and intelligent business information in real-time to take strategic decisions. They require the freedom to access this information anywhere and anytime. There is a need to extend this functionality beyond the office and on the fingertips of the decision makers. Mobile Business Intelligence Tool (MBIT) aims to provide these features in a flexible and cost-efficient manner. This paper describes the detailed architecture of MBIT to overcome the limitations of existing mobile business intelligence tools. Further, a detailed implementation framework is presented to realize the design. This research highlights the benefits of using service oriented architecture to design flexible and platform independent mobile business applications.
公司高管需要实时的相关和智能的业务信息来做出战略决策。他们需要随时随地获取这些信息的自由。有必要将这一功能扩展到办公室之外,让决策者触手可及。移动商务智能工具(MBIT)旨在以灵活和经济的方式提供这些功能。本文描述了mbbit的详细架构,以克服现有移动商务智能工具的局限性。在此基础上,给出了详细的实现框架。这项研究强调了使用面向服务的体系结构来设计灵活且独立于平台的移动业务应用程序的好处。
{"title":"An open source service oriented Mobile Business Intelligence Tool (MBIT)","authors":"B. Sajjad, A. Mir, A. Khawar, F. Bashir, A. Tariq","doi":"10.1109/ICICT.2009.5267184","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267184","url":null,"abstract":"Corporate executives require relevant and intelligent business information in real-time to take strategic decisions. They require the freedom to access this information anywhere and anytime. There is a need to extend this functionality beyond the office and on the fingertips of the decision makers. Mobile Business Intelligence Tool (MBIT) aims to provide these features in a flexible and cost-efficient manner. This paper describes the detailed architecture of MBIT to overcome the limitations of existing mobile business intelligence tools. Further, a detailed implementation framework is presented to realize the design. This research highlights the benefits of using service oriented architecture to design flexible and platform independent mobile business applications.","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125922879","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: 12
A two-step approach for improving efficiency of feedforward Multilayer Perceptrons network 一种提高前馈多层感知器网络效率的两步法
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267199
S. Ullah, Z. Hussain
An Artificial Neural Network has got greater importance in the field of data mining. Although it may have complex structure, long training time, and uneasily understandable representation of results, neural network has high accuracy and is preferable in data mining. This research paper is aimed to improve efficiency and to provide accurate results on the basis of same behaviour data. To achieve these objectives, an algorithm is proposed that uses two data mining techniques, that is, attribute selection method and cluster analysis. The algorithm works by applying attribute selection method to eliminate irrelevant attributes, so that input dimensionality is reduced to only those attributes which contribute in the training process. Then after, the whole dataset is partitioned into n clusters which are finally fed into Multilayer Perceptrons network based on backpropagation algorithm to carry out blockwise and parallel training.
人工神经网络在数据挖掘领域得到了越来越重要的应用。尽管神经网络存在结构复杂、训练时间长、结果表示不容易理解等问题,但其精度高,在数据挖掘中具有较好的应用前景。本文旨在提高效率,并在相同行为数据的基础上提供准确的结果。为了实现这些目标,本文提出了一种利用属性选择方法和聚类分析两种数据挖掘技术的算法。该算法采用属性选择方法剔除不相关的属性,从而将输入维数降为对训练过程有贡献的属性。然后将整个数据集划分为n个聚类,最后将聚类送入基于反向传播算法的多层感知器网络,进行分块并行训练。
{"title":"A two-step approach for improving efficiency of feedforward Multilayer Perceptrons network","authors":"S. Ullah, Z. Hussain","doi":"10.1109/ICICT.2009.5267199","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267199","url":null,"abstract":"An Artificial Neural Network has got greater importance in the field of data mining. Although it may have complex structure, long training time, and uneasily understandable representation of results, neural network has high accuracy and is preferable in data mining. This research paper is aimed to improve efficiency and to provide accurate results on the basis of same behaviour data. To achieve these objectives, an algorithm is proposed that uses two data mining techniques, that is, attribute selection method and cluster analysis. The algorithm works by applying attribute selection method to eliminate irrelevant attributes, so that input dimensionality is reduced to only those attributes which contribute in the training process. Then after, the whole dataset is partitioned into n clusters which are finally fed into Multilayer Perceptrons network based on backpropagation algorithm to carry out blockwise and parallel training.","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123124704","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
Automated Frequency Distribution, Management & Assignment (AFDMA) in IEEE 802.16 IEEE 802.16中的自动频率分配、管理和分配(AFDMA)
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267206
K. Shehzad, A. Ali, F. Rasool, R. Hashmi, A. Zubair, R. Ali
Frequency is amongst the most exclusive and most costly resources in wireless communication networks, especially, while considering the demands of Broadband Wireless Access (BWA). In BWA, the management of frequency distribution and its effective utilization is of utmost importance. This research explores possible ways to ensure the most effective allocation of bandwidth resources and their best possible utilization on need basis. The model for static frequency allocation has been optimized and the dynamic frequency management has been calculated while dividing the users in different user classes on the basis of their needs and requirements. The effect of ping-pong handovers has been handled by introducing an inter-base station handshake process, allowing effective management of fast moving users. Automated Frequency Distribution, Management and Assignment (AFDMA) provides maximum bandwidth optimization in order to ensure increased network performance and Quality of Service (QoS).
频率是无线通信网络中最独特和最昂贵的资源之一,特别是考虑到宽带无线接入(BWA)的需求。在宽带无线宽带网络中,频率分布的管理和有效利用至关重要。本研究探讨了确保带宽资源最有效分配的可能方法,并在需要的基础上尽可能地利用它们。优化了静态频率分配模型,计算了动态频率管理,并根据用户需求将用户划分为不同的用户类别。乒乓切换的影响已经通过引入基站间握手过程来处理,允许对快速移动的用户进行有效的管理。自动频率分配、管理和分配(AFDMA)提供最大的带宽优化,以确保提高网络性能和服务质量(QoS)。
{"title":"Automated Frequency Distribution, Management & Assignment (AFDMA) in IEEE 802.16","authors":"K. Shehzad, A. Ali, F. Rasool, R. Hashmi, A. Zubair, R. Ali","doi":"10.1109/ICICT.2009.5267206","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267206","url":null,"abstract":"Frequency is amongst the most exclusive and most costly resources in wireless communication networks, especially, while considering the demands of Broadband Wireless Access (BWA). In BWA, the management of frequency distribution and its effective utilization is of utmost importance. This research explores possible ways to ensure the most effective allocation of bandwidth resources and their best possible utilization on need basis. The model for static frequency allocation has been optimized and the dynamic frequency management has been calculated while dividing the users in different user classes on the basis of their needs and requirements. The effect of ping-pong handovers has been handled by introducing an inter-base station handshake process, allowing effective management of fast moving users. Automated Frequency Distribution, Management and Assignment (AFDMA) provides maximum bandwidth optimization in order to ensure increased network performance and Quality of Service (QoS).","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131036728","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 comparative analysis of DCCP variants (CCID2, CCID3), TCP and UDP for MPEG4 video applications MPEG4视频应用的DCCP变体(CCID2, CCID3), TCP和UDP的比较分析
Pub Date : 2009-09-25 DOI: 10.1109/ICICT.2009.5267215
M. A. Azad, R. Mahmood, T. Mehmood
New emerging technologies like Multimedia applications require timely delivery of information as compared to reliability. The most widely used protocols over transport layer are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). Both of these have some drawbacks while using in real time applications. TCP increases delay in transfer of data but achieving reliable transfer of data while UDP does not provide any acknowledgment, hence it overcomes the problem of delay but lacking congestion control mechanism. To provide congestion control over transport layer using UDP, Datagram Congestion Control Protocol (DCCP) has been designed to provide timely delivery of data and congestion control mechanism as well. In this research text, we have worked out the behavior of video applications over DCCP environment. We have analyzed the performance of MPEG4 video over transport layer using DCCP variants, UDP and TCP under competing and non-competing topology. Delay, throughput, jitter and packet loss are used to assess the performance of these protocols. Our results show that DCCP can be used as a transport layer protocol for video applications, which may result in improved throughput, reduced packet loss as compared to UDP but the delay and jitter of UDP is much lesser than DCCP variants. According to the results DCCP assures better QoS than other transport protocols for video transmission under congestion.
与可靠性相比,像多媒体应用程序这样的新兴技术需要及时地传递信息。在传输层上使用最广泛的协议是传输控制协议(TCP)和用户数据报协议(UDP)。在实时应用程序中使用时,这两种方法都有一些缺点。TCP增加了数据传输的延迟,但实现了可靠的数据传输,而UDP不提供任何确认,因此克服了延迟的问题,但缺乏拥塞控制机制。为了使用UDP提供传输层的拥塞控制,设计了数据报拥塞控制协议(DCCP)来提供数据的及时传递和拥塞控制机制。本文研究了视频应用在DCCP环境下的行为。我们分析了在竞争和非竞争拓扑下使用DCCP变体、UDP和TCP在传输层上的MPEG4视频性能。时延、吞吐量、抖动和丢包是评估这些协议性能的指标。我们的研究结果表明,DCCP可以用作视频应用的传输层协议,与UDP相比,这可能会提高吞吐量,减少数据包丢失,但UDP的延迟和抖动要比DCCP变体小得多。结果表明,在拥塞情况下,DCCP比其他传输协议保证了更好的视频传输QoS。
{"title":"A comparative analysis of DCCP variants (CCID2, CCID3), TCP and UDP for MPEG4 video applications","authors":"M. A. Azad, R. Mahmood, T. Mehmood","doi":"10.1109/ICICT.2009.5267215","DOIUrl":"https://doi.org/10.1109/ICICT.2009.5267215","url":null,"abstract":"New emerging technologies like Multimedia applications require timely delivery of information as compared to reliability. The most widely used protocols over transport layer are Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). Both of these have some drawbacks while using in real time applications. TCP increases delay in transfer of data but achieving reliable transfer of data while UDP does not provide any acknowledgment, hence it overcomes the problem of delay but lacking congestion control mechanism. To provide congestion control over transport layer using UDP, Datagram Congestion Control Protocol (DCCP) has been designed to provide timely delivery of data and congestion control mechanism as well. In this research text, we have worked out the behavior of video applications over DCCP environment. We have analyzed the performance of MPEG4 video over transport layer using DCCP variants, UDP and TCP under competing and non-competing topology. Delay, throughput, jitter and packet loss are used to assess the performance of these protocols. Our results show that DCCP can be used as a transport layer protocol for video applications, which may result in improved throughput, reduced packet loss as compared to UDP but the delay and jitter of UDP is much lesser than DCCP variants. According to the results DCCP assures better QoS than other transport protocols for video transmission under congestion.","PeriodicalId":147005,"journal":{"name":"2009 International Conference on Information and Communication Technologies","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116753673","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
期刊
2009 International Conference on Information and Communication Technologies
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1