7th International Multi Topic Conference, 2003. INMIC 2003.最新文献_第8页

A distributed application model for mobile networks 移动网络的分布式应用模型

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416685

N. Khan, S. Khan, M. O. Cheema, M. N. Ayyaz

{"title":"A distributed application model for mobile networks","authors":"N. Khan, S. Khan, M. O. Cheema, M. N. Ayyaz","doi":"10.1109/INMIC.2003.1416685","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416685","url":null,"abstract":"With the mobile devices becoming increasingly popular, there is a new appetite for applications for these devices. However, the problem faced by the application developers is that such devices have limited processing ability together with limited memory. At the same time, the servers have faster processing speed and larger memory. In this case, an obvious solution would have been to shift the majority of the computation and storage on to the server. Whenever a user wants to access this information, he generates a request and the results are transported to his/her mobile device. The user is required to select various options at the device screen before getting the final result front the server. Each time an option is selected, data transfer takes place between the two ends. The bandwidth available to a mobile user is inadequate to facilitate such large and frequent data transfers. This paper presents a three-tier application model that works specifically for the GSM networks (i.e. 2nd and higher generation of mobile networks). Using this model, various new and extremely useful applications can be designed. They would require no extra, expensive hardware and can easily fit into the existing network infrastructure","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122658106","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

Effective load balancing in distributed video-on-demand multimedia system 分布式视频点播多媒体系统的有效负载均衡

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416687

M. Moghal, M. Mian

{"title":"Effective load balancing in distributed video-on-demand multimedia system","authors":"M. Moghal, M. Mian","doi":"10.1109/INMIC.2003.1416687","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416687","url":null,"abstract":"Distributed multimedia applications (DMA), such as video-on-demand (VoD) require dynamic quality-of-service (QoS) guarantee from end-user machines for their continuous multimedia streams. The QoS requirements and improvement in job execution time can be achieved with the aid of proper load balancing among the machines. An effective way to achieve load balance is to link up these end-user machines with multiple potential heterogeneous idle or under-loaded clustered-servers and allow these servers with idle retrieval bandwidth to help out end-user machines that are low power or temporarily overloaded (bottleneck). The clustered VoD servers approach provides scalability and availability compared to a single video server. In this paper we design and implement a new clustered-server-client architecture for multimedia VoD applications along with a new REMS+VoD algorithm. Rigorous simulation for the algorithm has been performed by varying both the number of video-requests (sessions) and the number of potential servers. The simulation results show that our approach provides: (1) effective load balancing; (2) scalability; and (3) availability in a VoD system","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128443386","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

Design and simulation of microwave front end of a DIFM receiver using COTS 基于COTS的DIFM接收机微波前端设计与仿真

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416705

S. A. Butt, Y.Y. Sethi, H. Tahir, K. Waheed, M. Ihsan

{"title":"Design and simulation of microwave front end of a DIFM receiver using COTS","authors":"S. A. Butt, Y.Y. Sethi, H. Tahir, K. Waheed, M. Ihsan","doi":"10.1109/INMIC.2003.1416705","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416705","url":null,"abstract":"This work presents an unique approach to system engineering and the design of the front end of an IFM receiver ranging from 0.5 to 8 GHz. It includes detailed mathematical calculations of the front end of the IFM receiver. The sensitivity, and dynamic range, based on COTS components for a given probability of detection and false alarm rate were calculated. The simulation results from antenna to phase correlator on CAD software are presented. COTS from different manufacturers was evaluated to achieve an optimum sensitivity and dynamic range for the receiver. Two different kinds of components were considered, i.e., package hybrid devices and surface mount components. A software program in C language was developed for the entire calculation of the receiver. The design involves careful consideration of various components' noise figure, gain and third order intercept. Preliminary design calculations and simulations show that surface mount components in the range of 0.5 to 2 GHz show better performance in terms of cost with the dynamic range of 50dB and a sensitivity of -77dBm. The design calculations and simulation also show that a dynamic range of 31 dB and tangential sensitivity of -73dB can be achieved using hybrid-packaged devices in the 2 to 8 GHz band.","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114665268","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: 4

High performance clustering for large data warehouses using peer-to-peer genetic algorithm 使用点对点遗传算法的大型数据仓库的高性能聚类

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416762

M.N. Shah, R. Mahmood

引用次数: 3

A motion estimation chip for block based MPEG-4 video applications 一种基于块的MPEG-4视频应用的运动估计芯片

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416718

M. Abbas, B. Talha, S. Khan, A. Abbas

{"title":"A motion estimation chip for block based MPEG-4 video applications","authors":"M. Abbas, B. Talha, S. Khan, A. Abbas","doi":"10.1109/INMIC.2003.1416718","DOIUrl":"https://doi.org/10.1109/INMIC.2003.1416718","url":null,"abstract":"The work presents an efficient VLSI architecture for the MPEG-4 video-coding standard. While its predecessors focused on the storage and transmission of audiovisual sequences, MPEG-4, being the first object-based coding standard, has much more to offer. Motion estimation (ME), the most computationally intensive part of MPEG, requires very high power throughput on account of its high memory utilization. To cope with the bandwidth and processing power requirements, the best approach entails a dedicated implementation for such a demanding algorithm. The first step of the design involves hardware/software partitioning to map most of the motion estimation functions in hardware. In order for the system to meet area and power dissipation constraints, fewer time critical functions, like intra-frame coding, discrete cosine transform, quantization, variable length coding and zigzag scanning, are handled as part of the software portion of the program. We have increased the precision significantly by doubling the accuracy of motion compensation from integer-pel to half-pel. Sum of absolute differences (SAD) is chosen as the criterion for evaluating the best match of motion vectors. The block matching is achieved with the novel robust search algorithm called predictive diamond search (PDS).","PeriodicalId":253329,"journal":{"name":"7th International Multi Topic Conference, 2003. INMIC 2003.","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130185986","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

Phenomena of gain saturation in semiconductor laser amplifiers 半导体激光放大器中增益饱和现象

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416695

A. Karim

引用次数: 0

Brain gain network: a proposal e-governance model to convert the brain drain into brain gain 人才引进网络:一种将人才流失转化为人才引进的电子政务模式

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416763

M. Joarder

引用次数: 1

Blocking optimization in dynamic traffic all-optical WDM networks without wavelength conversion 无波长转换的动态流量全光WDM网络阻塞优化

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416688

S. Zaidi, A. Mahmood

引用次数: 1

Implementing ITU-T G.723.1 speech coding standard, observation and results 实现ITU-T G.723.1语音编码标准，观察结果

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416622

N. Junejo, E. Ahmed, A. Shah

引用次数: 1

Adhering to CMM Level 2 in medium size software organizations in Pakistan 在巴基斯坦中型软件组织中坚持CMM 2级

7th International Multi Topic Conference, 2003. INMIC 2003. Pub Date : 2003-12-08 DOI: 10.1109/INMIC.2003.1416766

F. Ilyas, R. Malik

引用次数: 4