2012 10th International Conference on Frontiers of Information Technology最新文献_第2页

Novel Approaches for Suppression of Four Wave Mixing in WDM System Using Concocted Modulation Techniques 利用调制技术抑制WDM系统中四波混频的新方法

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.19

I. Rasheed, Muhammad Abdullah, Qazi Md. Hamza Mansoor, Z. Rehman

{"title":"Novel Approaches for Suppression of Four Wave Mixing in WDM System Using Concocted Modulation Techniques","authors":"I. Rasheed, Muhammad Abdullah, Qazi Md. Hamza Mansoor, Z. Rehman","doi":"10.1109/FIT.2012.19","DOIUrl":"https://doi.org/10.1109/FIT.2012.19","url":null,"abstract":"The problem of four wave mixing (FWM) has become the principle focus for communication Engineers in designing a wavelength division multiplexing (WDM) system which is generated due to the optical nonlinear effect of fiber in multichannel systems. It has been observed through simulations results of different techniques that FWM effect becomes maximum when the fiber dispersion level approaches to zero. In this paper we have investigated the hybrid modulations for suppressing the FWM effect in 2.5Gbps system on OptiSystem Software and proposed the three hybrid modulators schemes depending upon the level of FWM suppression considering the results of eye diagram at different power levels. During simulation we use the default values of the parameters of modulators employed. Three schemes, High level reduction, Low level reduction and Intermediate level reduction have been implemented using combination of different modulators in this paper and their simulation results show that the Intermediate level reduction technique (Hybrid Tripely Technique) is comparatively the better one.","PeriodicalId":166149,"journal":{"name":"2012 10th International Conference on Frontiers of Information Technology","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121039102","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

Comparison of Maximal Upward Planar Subgraph Computation Algorithms 最大向上平面子图计算算法的比较

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.71

A. Rextin

引用次数: 0

Combined Human, Antenna Orientation in Elevation Direction and Ground Effect on RSSI in Wireless Sensor Networks 无线传感器网络中人、天线高程方向和地面效应对RSSI的综合影响

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.17

Syed Hassan Ahmed, S. Bouk, N. Javaid, I. Sasase

{"title":"Combined Human, Antenna Orientation in Elevation Direction and Ground Effect on RSSI in Wireless Sensor Networks","authors":"Syed Hassan Ahmed, S. Bouk, N. Javaid, I. Sasase","doi":"10.1109/FIT.2012.17","DOIUrl":"https://doi.org/10.1109/FIT.2012.17","url":null,"abstract":"In this paper, we experimentally investigate the combined effect of human, antenna orientation in elevation direction and the ground effect on the Received Signal Strength Indicator (RSSI) parameter in the Wireless Sensor Network (WSN). In experiment, we use MICAz motes and consider different scenarios where antenna of the transmitter node is tilted in elevation direction. The motes were placed on the ground to take into account the ground effect on the RSSI. The effect of one, two and four persons on the RSSI is recorded. For one and two persons, different walking paces e.g. slow, medium and fast pace, are analysed. However, in case of four persons, random movement is carried out between the pair of motes. The experimental results show that some antenna orientation angles have drastic effect on the RSSI, even without any human activity. The fluctuation count and range of RSSI in different scenarios with same walking pace are completely different. Therefore, an efficient human activity algorithm is need that effectively takes into count the antenna elevation and other parameters to accurately detect the human activity in the WSN deployment region.","PeriodicalId":166149,"journal":{"name":"2012 10th International Conference on Frontiers of Information Technology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126545870","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: 19

A Comparative Analysis of Electrical and Photo Characteristics of LED Lights LED灯的光电特性比较分析

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.46

Muhammad Muneeb Ur Rehman, Hassan Shabbir, Sohaib Abdul Rehman, Salman Khalid Sheikh, N. Zaffar

引用次数: 9

Indoor Furniture and Room Recognition for a Robot Using Internet-Derived Models and Object Context 基于互联网衍生模型和对象上下文的机器人室内家具和房间识别

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.30

Theodoros Varvadoukas, Eirini Giannakidou, Javier V. Gómez, N. Mavridis

引用次数: 11

Multimode Competition in Lasers in the Light of Optical Feedback 光反馈光下激光器的多模竞争

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.50

U. Masud, M. I. Baig

引用次数: 3

Determining the Factors Affecting the Accuracy of Effort Estimates for Different Application and Task Types 确定影响不同应用程序和任务类型的工作量估计准确性的因素

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.16

Saqib Bukhari, Ali Afzal Malik

{"title":"Determining the Factors Affecting the Accuracy of Effort Estimates for Different Application and Task Types","authors":"Saqib Bukhari, Ali Afzal Malik","doi":"10.1109/FIT.2012.16","DOIUrl":"https://doi.org/10.1109/FIT.2012.16","url":null,"abstract":"An important asset in the skill set of any software project manager is the ability to somewhat accurately estimate the effort required to develop a software application. Acquiring this asset, however, requires a thorough understanding of the factors that may affect the accuracy of these estimates. This paper presents the results of an empirical study conducted to determine the causes of variation in the accuracy of effort estimations for different application and task types. A Pakistani software house that specializes in developing financial transaction processing applications is chosen for this empirical study. Actual and estimated values for software development effort are gathered and analyzed for four different types of applications - web-based, database, parallel processing, and telephony - each having six different types of tasks i.e. business-development, new features, usability, security, support, and performance. Over 1000 data points are considered. Analysis of the results reveals, for instance, that the effort for web-based applications is mostly underestimated while the effort for telephony applications is mostly overestimated. The underestimation in web-based applications is usually due to a failure to account for the learning curve associated with rapidly changing web technologies while the overestimation in telephony applications is usually due to a failure to account for the usage of third-party components.","PeriodicalId":166149,"journal":{"name":"2012 10th International Conference on Frontiers of Information Technology","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123034712","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

Bio-signal Processing Using Cartesian Genetic Programming Evolved Artificial Neural Network (CGPANN) 基于笛卡尔遗传规划进化人工神经网络(CGPANN)的生物信号处理

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.54

A. Ahmad, G. M. Khan

引用次数: 12

Statistical Spectrum Sensing in Cognitive Radio 认知无线电中的统计频谱感知

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.34

A. W. Azim, S. S. Khalid, S. Abrar

引用次数: 6

Server Replication in Multicast Networks 组播网络中的服务器复制

2012 10th International Conference on Frontiers of Information Technology Pub Date : 2012-12-17 DOI: 10.1109/FIT.2012.67

H. S. Kia, S. Khan

引用次数: 4