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2008 International Symposium on High Capacity Optical Networks and Enabling Technologies最新文献

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Similarity Level Method Based Static Software Birthmarks 基于相似水平方法的静态软件胎记
Y. Mahmood, Z. Pervez, S. Sarwar, H. F. Ahmed
It is almost imperative to live without software fabricated after undergoing time and resource intensive processes of software engineering. After software is developed it is subjected to customers with granted rights for use but constrained with modifying, sharing or selling the software. Violation of the said constraints leads to critical issue of software piracy. Software birthmarking is one of the most effective techniques to minimize the software piracy. It finds intrinsic properties in the software program to detect copy of software. In this paper we have proposed a ' method based similarity level' software birthmark technique. It finds the intrinsic properties in the method of software program by locating the attributes of the code elements in the method and relation among code elements. The proposed approach not only identifies similarity of the program but detects program modification as well. Moreover, our technique can spot out method and class theft by fulfilling the credibility and resilience properties of birthmarks.
在经历了时间和资源密集的软件工程过程之后,不制作软件几乎是必要的。软件开发完成后,用户有权使用软件,但不得修改、共享或销售软件。违反上述约束将导致软件盗版的关键问题。软件胎记是减少软件盗版最有效的技术之一。它发现软件程序的内在属性,以检测软件的副本。本文提出了一种“基于相似度的方法”软件胎记技术。它通过定位方法中代码元素的属性和代码元素之间的关系来发现软件程序方法的内在属性。该方法不仅可以识别程序的相似性,还可以检测程序的修改。此外,我们的技术可以通过满足胎记的可信度和弹性特性来识别方法和类盗窃。
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引用次数: 9
Emerging Technologies for Healthcare 医疗保健领域的新兴技术
M. Ilyas
The paper discusses integrating of current and emerging technologies with healthcare. These technologies can be used for prevention of diseases, enhancing healthcare access, efficient and accurate diagnostics, effective healthcare delivery, rehabilitation, healthcare information management, improving quality of life at all ages and many other features. In this paper, we discuss several aspects of healthcare and technologies including: ldr development of products/devices for improving the quality of life of individuals with disabilities and help in their rehabilitation ldr development of products/processes that will allow remote monitoring of patients, remote diagnostics, provide a mechanism for healthcare professionals to collaborate in a distributed environment, and deliver treatment ldr using RFID and wireless sensor networks in tracking patients ldr developing methods, mechanisms, and processes, for preventing diseases and injuries for all age groups.
本文讨论了当前和新兴技术与医疗保健的集成。这些技术可用于预防疾病、增强医疗保健服务、高效准确的诊断、有效的医疗保健服务、康复、医疗保健信息管理、改善所有年龄段的生活质量以及许多其他功能。在本文中,我们讨论了医疗保健和技术的几个方面,包括:开发产品/设备,提高残疾人的生活质量,帮助他们康复;开发产品/流程,实现对患者的远程监控和远程诊断;为医疗保健专业人员提供在分布式环境中协作的机制;使用RFID和无线传感器网络跟踪患者提供治疗;预防所有年龄组的疾病和伤害。
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引用次数: 6
Bandwidth Enhancement Technique using Series-Shunt Bootstrapping for Front-End Optical Wireless Receiver 前端无线光接收机串联分流引导增强带宽技术
A. Ramli, S. M. Idrus, A. Supa’at, S. S. Rais
The performance of receiver system for the optical wireless communication is greatly determined by the performance of the front-end. However, large detection area required in optical wireless application produces high detector capacitance hence limits the bandwidth performance of the system. Thus, techniques to reduce effective detector capacitance are required to increase the receiver sensitivity, bandwidth and noise performance. A lot of papers have been previously reported successful techniques to enhance the bandwidth by employing bootstrapping technique. This paper introduces a series-shunt bootstrapping technique which exploits a series-shunt positive capacitive feedback. The modeling of the circuit is done by utilizing MATLAB. This technique boosts the bandwidth up to 1.04 GHz.
光无线通信接收系统的性能在很大程度上取决于前端的性能。然而,在光学无线应用中,检测面积大,检测器电容高,限制了系统的带宽性能。因此,需要降低有效检测器电容的技术来提高接收机的灵敏度、带宽和噪声性能。以前已经有很多论文报道了利用自举技术来提高带宽的成功方法。本文介绍了一种利用串联并联正电容反馈的串联并联自举技术。利用MATLAB对电路进行了建模。这种技术将带宽提高到1.04 GHz。
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引用次数: 1
Millimeter-Wave Carrier Generation System for Radio over Fiber 光纤无线电毫米波载波产生系统
N. Mohamed, S. M. Idrus, A. .. Mohammad, H. Harun
Due to the huge demand for the mm-wave band in future communication system applications, many researchers are investigating and continue working on the generation of millimeter-wave (mm-wave) signal for radio over fiber (RoF). RoF is an expanding technology that applicable in high channel capacity, wider service coverage and broadband mm-wave access system. However, the limited availability of the RF bands require utilization of the mm-wave frequency bands to meet the obligation for higher signal bandwidth and overcome the frequency congestion in the future RoF-based optical-wireless access networks. Broadband wireless communication has introduced great interest in mm-wave bands due to its wide transmission bandwidth and also the opportunity of frequency reuse. This paper mainly focuses on the mm-wave carrier generation techniques for radio over fiber including: optical heterodyning, external modulation, optical transceiver, and up- and down-conversion.
由于未来通信系统应用对毫米波波段的巨大需求,许多研究人员正在研究毫米波信号在光纤无线电(RoF)中的产生。RoF是一种扩展技术,适用于高信道容量、更宽业务覆盖和宽带毫米波接入系统。然而,由于射频频段的可用性有限,需要利用毫米波频段来满足更高信号带宽的要求,并克服未来基于射频的光无线接入网的频率拥塞问题。宽带无线通信由于其较宽的传输带宽和频率复用的机会而引起了人们对毫米波频段的极大兴趣。本文主要介绍了光纤无线电毫米波载波产生技术,包括光外差、外部调制、光收发和上下转换。
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引用次数: 5
Heuristic Surveillance of Targets in Sensor Networks 传感器网络中目标的启发式监视
S. Kamel, A. Rahbar
A surveillance system is a sort of wireless sensor network to monitor targets, where a scheduling is required for monitoring period of each sensor in order to control the power consumption of sensors. In this network, a base station makes scheduling matrices regarding to network specifications, then sends these matrices to sensors in the network. Then, the sensors act based on these scheduling matrices. Since making the scheduling matrices needs a higher complexity, a heuristic method is presented in this paper in order to reduce the complexity and to provide the scheduling matrices without affecting the network performance remarkably. By this heuristic method, scheduling matrices that have little effect on coverage of time in system are eliminated.
监控系统是一种用于监控目标的无线传感器网络,为了控制传感器的功耗,需要对每个传感器的监控周期进行调度。在该网络中,基站根据网络规范制作调度矩阵,然后将这些矩阵发送给网络中的传感器。然后,传感器根据这些调度矩阵行动。针对调度矩阵的制作复杂度较高的问题,本文提出了一种启发式方法,在不显著影响网络性能的前提下,降低调度矩阵的制作复杂度,提供调度矩阵。通过这种启发式方法,消除了对系统时间覆盖影响不大的调度矩阵。
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引用次数: 2
Usage Pattern Based Prefetching For Mechanical Mass Storage 基于使用模式的机械大容量存储预取
S. Sarwar, Y. Mahmood, H. F. Ahmed, Raihan-Ur-Rasool, H. Takahashi
Cache being the fastest medium in memory hierarchy has a vital role to play in concealing delays and access latencies during 10 operations and hence in improving system response time. One of the most substantial approaches to fully exploit the significance of cache memory is data prefetching, where we envisage future requests of users and take data to memory in advance. Current prefetching techniques, performing limited prefetching, are based upon locality of reference principle (situation specific); Markov series (slow for practical implementation) or dual data caching (quite burdensome for programmer) with biased cache replacement policies. So we present a novel 'usage pattern based' approach for predictive prefetching; employing proven neural networks to broaden the scope of prefetching at user level. The efficacy of approach is revealed by its accuracy and minimal resource usage as affirmed by preliminary results.
缓存是内存层次结构中最快的介质,在隐藏10个操作期间的延迟和访问延迟方面起着至关重要的作用,因此可以改善系统响应时间。充分利用高速缓存的重要意义的最重要的方法之一是数据预取,我们设想用户未来的请求并提前将数据存储到内存中。目前的预取技术,执行有限的预取,是基于引用的局部性原则(具体情况);马尔可夫级数(实际实现缓慢)或双数据缓存(对程序员来说相当繁重),具有有偏差的缓存替换策略。因此,我们提出了一种新的基于使用模式的预测预取方法;采用成熟的神经网络来扩大用户级预取的范围。初步结果证实了该方法的准确性和最小的资源利用率。
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引用次数: 2
Optimal Confinement Loss Reduction in Photonic Crystal Fiber with Flattened Dispersion 平坦色散光子晶体光纤的最优约束损耗降低
M. Pourmahayabadi, S. Nejad, Emails Pmahyabadi, Sahrammnajuslacli, Vi Xs, Vi Xhj, Vi
In this paper, a modified designing method about PCFs with large modal area, low confinement loss and flattened dispersion in a wide wavelength range is proposed. All air holes are arranged in the section according to triangular regulation and with identical spacing. The thirteen air holes which arranged in the snowflake shape in the middle of the section are replaced with high index inclusions that are smaller than the other air holes of the outer cladding which form the core region. So, a hybrid photonic crystal fiber in which a guided mode is confined simultaneously by modified total internal reflection from an array of air holes and anti-resonant reflection from the high-index inclusions is presented. We consider simulating PCF using the FDTD technique by imposing PML for boundary condition treatment in the longitudinal dimension, thereby reducing the problem to two dimensions. Desired dispersion character and low confinement loss can be realized in our designed PCFs with special section structure by optimizing the match of the spacing and air hole size in core and cladding regions and controlling the core-cladding refractive index difference.
本文提出了一种在宽波长范围内具有大模态面积、低约束损耗和平坦色散的PCFs的改进设计方法。所有气孔均按三角形规则布置在截面上,且间距相同。在截面中间以雪花状排列的13个气孔被替换为高指数夹杂物,这些夹杂物比外包层的其他气孔更小,形成了核心区域。因此,本文提出了一种混合光子晶体光纤,该光纤的导模同时受到来自一排气孔的修正全内反射和来自高折射率内含物的抗谐振反射的约束。我们考虑使用FDTD技术模拟PCF,通过在纵向维度施加PML进行边界条件处理,从而将问题减少到二维。通过优化堆芯与包层间距和空穴尺寸的匹配,控制堆芯与包层的折射率差,设计出具有特殊截面结构的聚光晶体,可获得理想的色散特性和低约束损耗。
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引用次数: 8
Link-Rate Assignment in a WDM Optical Mesh Network with Differential Link Capacities: A Network-Engineering Approach 差分链路容量的WDM光网状网络的链路速率分配:一种网络工程方法
M. Batayneh, D. Schupke, M. Hoffmann, A. Kirstaedter, B. Mukherjee
Wavelength-division multiplexing (WDM) optical networks are characterized by maturity, high-capacity, agility, flexibility, and cost-efficiency. Today, optical transmission rates are increasing from 10 Gbit/s to 100 Gbit/s which increases the network's flexibility for capacity provisioning. We study the problem of dimensioning optical WDM networks under traffic growth. Particularly, we study link-rate assignment and capacity expansion (namely network engineering). Our study shows that, with careful link-rate assignment, the network's traffic can be satisfied and any traffic growth can be accommodated using the network's current resources with some additional resources so that cost is minimized. Our study also shows that, by careful selection, only a few links with high rates can meet the capacity needs of the network and that any additional high-rate links (extra cost) may not significantly improve the network's efficiency.
波分复用(wavelength division multiplexing, WDM)光网络具有成熟、高容量、敏捷性、灵活性和高性价比等特点。如今,光传输速率从10gbit /s向100gbit /s发展,增加了网络容量分配的灵活性。研究了业务量增长下的光波分复用网络的维数问题。特别是,我们研究链路速率分配和容量扩展(即网络工程)。我们的研究表明,通过仔细的链路速率分配,可以满足网络的流量,并且可以使用网络的当前资源和一些额外的资源来适应任何流量的增长,从而使成本最小化。我们的研究还表明,通过仔细选择,只有少数高速率链路可以满足网络的容量需求,而任何额外的高速率链路(额外成本)可能不会显著提高网络的效率。
{"title":"Link-Rate Assignment in a WDM Optical Mesh Network with Differential Link Capacities: A Network-Engineering Approach","authors":"M. Batayneh, D. Schupke, M. Hoffmann, A. Kirstaedter, B. Mukherjee","doi":"10.1109/HONET.2008.4810238","DOIUrl":"https://doi.org/10.1109/HONET.2008.4810238","url":null,"abstract":"Wavelength-division multiplexing (WDM) optical networks are characterized by maturity, high-capacity, agility, flexibility, and cost-efficiency. Today, optical transmission rates are increasing from 10 Gbit/s to 100 Gbit/s which increases the network's flexibility for capacity provisioning. We study the problem of dimensioning optical WDM networks under traffic growth. Particularly, we study link-rate assignment and capacity expansion (namely network engineering). Our study shows that, with careful link-rate assignment, the network's traffic can be satisfied and any traffic growth can be accommodated using the network's current resources with some additional resources so that cost is minimized. Our study also shows that, by careful selection, only a few links with high rates can meet the capacity needs of the network and that any additional high-rate links (extra cost) may not significantly improve the network's efficiency.","PeriodicalId":433243,"journal":{"name":"2008 International Symposium on High Capacity Optical Networks and Enabling Technologies","volume":"487 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114635856","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
Analysis of Super-Gaussian Ultra-Short Pulse Propagation in Nonlinear Optical Fibers 超高斯超短脉冲在非线性光纤中的传输分析
E. Rahimi, S. Nejad
In today's overwhelming world of data, ultra-wideband communication systems are the inevitable parts of the communication society that has faced scientists with challenging and new problems. Appearance of nonlinear effects in optical fiber communication systems due to wideband data transmissions with the aid of ultra-short pulses has recently attracted a lot of publicity. In this paper, a thorough study of nonlinear effects both in time and frequency domain has been carried out to analyze the propagation of super-Gaussian ultra-short pulses in nonlinear optical fibers. The results show different behavior of nonlinear optical fibers at specific lengths, frequency and levels of nonlinearity. Moreover, with the aid of negative third order dispersion parameter, the frequency shift in the output profile has been successfully compensated.
在当今数据泛滥的世界中,超宽带通信系统是通信社会不可避免的一部分,它给科学家们带来了挑战和新的问题。利用超短脉冲进行宽带数据传输在光纤通信系统中出现的非线性效应近年来引起了人们的广泛关注。本文从时域和频域两方面深入研究了超高斯超短脉冲在非线性光纤中的传播。结果表明,在不同的长度、频率和非线性程度下,非线性光纤具有不同的特性。此外,利用负三阶色散参数,成功地补偿了输出曲线中的频移。
{"title":"Analysis of Super-Gaussian Ultra-Short Pulse Propagation in Nonlinear Optical Fibers","authors":"E. Rahimi, S. Nejad","doi":"10.1109/HONET.2008.4810224","DOIUrl":"https://doi.org/10.1109/HONET.2008.4810224","url":null,"abstract":"In today's overwhelming world of data, ultra-wideband communication systems are the inevitable parts of the communication society that has faced scientists with challenging and new problems. Appearance of nonlinear effects in optical fiber communication systems due to wideband data transmissions with the aid of ultra-short pulses has recently attracted a lot of publicity. In this paper, a thorough study of nonlinear effects both in time and frequency domain has been carried out to analyze the propagation of super-Gaussian ultra-short pulses in nonlinear optical fibers. The results show different behavior of nonlinear optical fibers at specific lengths, frequency and levels of nonlinearity. Moreover, with the aid of negative third order dispersion parameter, the frequency shift in the output profile has been successfully compensated.","PeriodicalId":433243,"journal":{"name":"2008 International Symposium on High Capacity Optical Networks and Enabling Technologies","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116448114","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
A Prioritized Routing Algorithm for Multi-Domain Optical Networks Supporting Advance Reservation 支持提前预约的多域光网络优先路由算法
C. Xie, N. Ghani
Numerous "on-demand" immediate request (IR) schemes have been developed for provisioning connection requests in optical networks. Lately more complicated advance reservation (AR) schemes are also being investigated by the research community. However, implementing AR across multiple network domains is a very challenging problem owing to key challenges in the area of limited inter-domain visibility, wavelength conversion limitations, signaling concerns, etc. To address this problem area, in this paper we propose a prioritized routing algorithm to handle both IR and AR requests. With the priority added, we argued that preemption of IR requests in the advent of AR ones is not always justified. Future direction and simulation setting are also discussed.
为了在光网络中提供连接请求,已经开发了许多“按需”立即请求(IR)方案。最近,研究界也在研究更复杂的提前预订(AR)计划。然而,跨多个网络域实现AR是一个非常具有挑战性的问题,因为域间可见性有限,波长转换限制,信令问题等方面的关键挑战。为了解决这个问题,在本文中,我们提出了一个优先路由算法来处理IR和AR请求。随着优先级的增加,我们认为在AR请求出现时抢占IR请求并不总是合理的。讨论了未来的发展方向和仿真设置。
{"title":"A Prioritized Routing Algorithm for Multi-Domain Optical Networks Supporting Advance Reservation","authors":"C. Xie, N. Ghani","doi":"10.1109/HONET.2008.4810237","DOIUrl":"https://doi.org/10.1109/HONET.2008.4810237","url":null,"abstract":"Numerous \"on-demand\" immediate request (IR) schemes have been developed for provisioning connection requests in optical networks. Lately more complicated advance reservation (AR) schemes are also being investigated by the research community. However, implementing AR across multiple network domains is a very challenging problem owing to key challenges in the area of limited inter-domain visibility, wavelength conversion limitations, signaling concerns, etc. To address this problem area, in this paper we propose a prioritized routing algorithm to handle both IR and AR requests. With the priority added, we argued that preemption of IR requests in the advent of AR ones is not always justified. Future direction and simulation setting are also discussed.","PeriodicalId":433243,"journal":{"name":"2008 International Symposium on High Capacity Optical Networks and Enabling Technologies","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127092187","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
期刊
2008 International Symposium on High Capacity Optical Networks and Enabling Technologies
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