2012 International Symposium on Telecommunication Technologies最新文献

Flooding control by using Angle Based Cone for UWSNs 基于角度锥的UWSNs泛洪控制

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481574

T. Ali, L. T. Jung, S. Ameer

{"title":"Flooding control by using Angle Based Cone for UWSNs","authors":"T. Ali, L. T. Jung, S. Ameer","doi":"10.1109/ISTT.2012.6481574","DOIUrl":"https://doi.org/10.1109/ISTT.2012.6481574","url":null,"abstract":"Providing better communication in UWSNs and maximize the communication performance is challenging issue due to volatile characteristics of underwater environment. Radio signal cannot properly propagate in underwater, so there is need, such type of acoustic modem technology that can supports better data rates and reliable underwater wireless communications. Further, nodes mobility, 3-D spaces brings some critical challenges for the researcher to design new routing protocol for UWSNs, to handle the issues like high end to end delays, Propagation delay, as well as power constraints of the sensor nodes. Many routing algorithms have been proposed in last two decades and some of them provide better solution to handle such type of issues. In this paper, we proposed a novel routing protocol called Layer by layer Angle Based Flooding (L2-ABF.), to address the problem node swaying issue, end-to-end delays, and node energy consumption. In L2-ABF, every node can calculate its flooding angle to forward data packet to the next upper layer toward the surface sinks without using any explicit configuration and location information. The simulation results show that L2-ABF has some advantages over some existing flooding base techniques and can easily manage quick routing changes where node movements are frequent.","PeriodicalId":334455,"journal":{"name":"2012 International Symposium on Telecommunication Technologies","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125023022","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: 30

Phase distribution analysis of reflectarray resonant elements based on linear and non-linear materials 基于线性和非线性材料的反射式谐振元件相位分布分析

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481582

M. H. Dahri, M. Ismail

引用次数: 3

Performance analysis of utilizing coding nodes in wireless networks 无线网络中利用编码节点的性能分析

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481595

Shee Eng Tan, Z. W. Siew, S. C. K. Lye, H. Yoong, K. T. K. Teo

引用次数: 0

A compact ultra wideband antenna with WLAN (IEEE 802.11a) band rejection 具有WLAN (IEEE 802.11a)频带抑制的紧凑型超宽带天线

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481554

Y. E. Jalil, C. Chakrabarty, B. Kasi

引用次数: 2

Effect of FWM in dispersion-managed ultra-high speed DWDM transmission system FWM在色散管理的超高速DWDM传输系统中的作用

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481560

M. Faisal, M. U. Saleh, I. Hasan, N. Kauser

引用次数: 1

A proposed network management protocol for Cognitive Radio Sensor Networks 一种认知无线电传感器网络的网络管理协议

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481571

S. Zubair, N. Fisal, M. Abazeed, Bala Alhaji Salihu

引用次数: 3

WRAN system on ZBC TV: A new way to internet connectivity for rural areas in Zimbabwe ZBC电视台的无线局域网系统:津巴布韦农村地区互联网连接的新方式

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481584

M. Roslee, C. Last

{"title":"WRAN system on ZBC TV: A new way to internet connectivity for rural areas in Zimbabwe","authors":"M. Roslee, C. Last","doi":"10.1109/ISTT.2012.6481584","DOIUrl":"https://doi.org/10.1109/ISTT.2012.6481584","url":null,"abstract":"Wireless Regional Access Network (WRAN) is increasingly becoming the focus architecture for future rural and remote areas access network. In Zimbabwe, internet connectivity to the rural areas is crucial but is hindered by what is called the Zimbabwean problem. In this paper brief discussions of existing technologies deployed for rural communications elsewhere in the world and recent technologies such as cognitive radio (CR) networks are explored for solutions to the Zimbabwean problem. In the process, WRAN, which exhibits extended coverage range, increased cell capacity and utilises idle TV spectrum and saves on deployment costs, was identified as a suitable broadband access candidate for providing connectivity to the rural areas of Zimbabwe. A design network structure is proposed and a basic CR simulation in MATLAB, and employing, power spectrum density estimation model for sensing, to show the possibility of harnessing idle Zimbabwe Broadcasting Corporation (ZBC) TV channels using CR technology is successfully run. A number of implementation challenges such as the effect of antenna height on the hidden terminal problem, MIMO incorporation in order to mitigate for such effects in WRAN networks, the investigation and mitigation of interference contribution from remote television stations, WRAN networks and other primary stations and users are discussed.","PeriodicalId":334455,"journal":{"name":"2012 International Symposium on Telecommunication Technologies","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134058109","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

Numerical model for phase distribution characterization of reflectarray elements 反射阵元相位分布表征的数值模型

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481583

A. Kiyani, M. Ismail

{"title":"Numerical model for phase distribution characterization of reflectarray elements","authors":"A. Kiyani, M. Ismail","doi":"10.1109/ISTT.2012.6481583","DOIUrl":"https://doi.org/10.1109/ISTT.2012.6481583","url":null,"abstract":"A mathematical model to obtain a linear progressive phase distribution of six different high performance reflectarray resonant elements in order to realize a planar wave in front of the periodic aperture is formulated in this paper. All the resonant elements under characterization are tuned to operate at X-band frequency range using commercially available CST computer model. The reflection phase curves for each resonant element are then calculated by using analytical equations based on a periodic Method of Moments (MoM). A Figure of Merit (FoM) has been defined for the comparison of reflection phase curves obtained by both simulation and formulation in terms of bandwidth and static phase range performance. It has been demonstrated that among the entire resonant elements triangular loop acquire steepest phase characteristics gradient offering higher static phase range of 190° with minimum bandwidth, whereas rectangular patch element is shown to exhibit smoother phase characteristics gradient giving lower static phase range of 120° with broader bandwidth performance. Furthermore it has been observed that triangular loop depicts the maximum reflection loss of 3.90dB, whereas rectangular patch shows the minimum reflection loss of 0.23dB.","PeriodicalId":334455,"journal":{"name":"2012 International Symposium on Telecommunication Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130751306","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

Visualization of invariant bot behavior for effective botnet traffic detection 用于有效僵尸网络流量检测的不变僵尸行为可视化

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481606

A. Shahrestani, M. Feily, M. Masood, B. Muniandy

{"title":"Visualization of invariant bot behavior for effective botnet traffic detection","authors":"A. Shahrestani, M. Feily, M. Masood, B. Muniandy","doi":"10.1109/ISTT.2012.6481606","DOIUrl":"https://doi.org/10.1109/ISTT.2012.6481606","url":null,"abstract":"Due to the sharp rise in computer network attacks through botnets, current security monitoring tools will be insufficient for effective botnet traffic detection. In fact, most of the existing tools are text-based and there is a lack of effective user friendly interface that can facilitate detection of botnet traffic in large datasets. Moreover, most of these tools are based on reactive approaches and will be triggered only after an attack is detected. Therefore, enhancement of botnet traffic detection is highly demanded. Knowledge discovery through information visualization is an avenue to solve these issues effectively. The aim of this research is to propose a proactive approach by adopting proper visualization techniques to increase the visibility of network traffic related to invariant bot behavior and botnet activities. The visualization techniques used in this research consist of graphs, scatter plots, and histograms. These visualization techniques are easy to interpret and good for visualizing large datasets. By adopting these techniques for invariant bot behavior visualization, it is possible to provide visual notification of bot existence in a network without distracting the user with huge volumes of data. In fact, the visual illustration of typical bot behavior improves the botnet traffic detection process by engaging human perception and intellectual capabilities. Overall, this visual approach can assist the security personnel to proactively detect invariant bot behaviors and botnet activities during the benign state of a botnet by providing a graphical user friendly interface. Exploiting the visual information, human analysts and security personnel will be able to gain more insights into their networks, leading to make correct decisions in critical situations and to prevent catastrophic botnet attacks.","PeriodicalId":334455,"journal":{"name":"2012 International Symposium on Telecommunication Technologies","volume":"334 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115529504","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

Improvement of higher order modulations for MUROS MUROS高阶调制的改进

2012 International Symposium on Telecommunication Technologies Pub Date : 2012-11-01 DOI: 10.1109/ISTT.2012.6481592

Dong-Ha Han, Seung-Hoon Hwang, Jae-ho Shin

引用次数: 0