2012 IV International Congress on Ultra Modern Telecommunications and Control Systems最新文献_第10页

Infrastructure dependent wireless multicast - The effect of spatial diversity and error correction 依赖于基础设施的无线多播。空间分集和纠错的影响

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459802

J. Vella, S. Zammit

引用次数: 2

FSK signals detection by digital filtration based on capon approach 基于capon方法的FSK信号数字滤波检测

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459674

A. Loginov, O. Morozov, M. Y. Semenova

引用次数: 0

Survivability modeling and analysis for a power-aware wireless ad hoc network 功率感知无线自组网的生存性建模与分析

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459775

Zhipeng Yi, T. Dohi, H. Okamura

引用次数: 4

Network implementation trade-offs in existing homes 现有住宅的网络实现权衡

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1080/01468030.2012.760688

G. Keiser

引用次数: 2

Low-threshold saturable absorption and photoluminescence emission in Phenol Red dye impregnated poly(vinyl alcohol) nanocomposite 苯酚红染料浸渍聚乙烯醇纳米复合材料的低阈值饱和吸收和光致发光发射

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459743

S. Sreeja, I. Navas, S. Mayadevi, P. G. L. Frobel, S. Suresh, C. I. Muneera

{"title":"Low-threshold saturable absorption and photoluminescence emission in Phenol Red dye impregnated poly(vinyl alcohol) nanocomposite","authors":"S. Sreeja, I. Navas, S. Mayadevi, P. G. L. Frobel, S. Suresh, C. I. Muneera","doi":"10.1109/ICUMT.2012.6459743","DOIUrl":"https://doi.org/10.1109/ICUMT.2012.6459743","url":null,"abstract":"A new organic-polymer nanocomposite system constituted of organic chromophore Phenol Red (PR) was fabricated using poly(vinyl alcohol) (PVA) as host template. The structure, morphology, linear and nonlinear optical absorption as well as photoluminescence emission behaviour of the organic-polymer composites were investigated. The composite films were characterized as nanoclusters consisting of the dye molecules encapsulated between the larger molecules/molecular chains of the semicrystalline polymer and having an average roughness as low as ≈0.62 nm for the surface. XRD studies indicated an increase in the semicrystalline nature of PVA, with the addition of Phenol Red (PR) dye molecules into the polymer. The composite films exhibited PL emission in the orange-red region of the visible spectrum, when excited in the vicinity of its absorption maximum. An investigation into the absorptive nonlinearity exhibited by the Phenol Red-PVA nanocomposite system under low power continuous wave (cw) laser light illumination at 442 nm, performed using the Z-scan technique is presented. The samples exhibited saturable absorption under the experimental conditions. The estimated values of the saturation intensity were found to be very low. The results indicate that the nanocomposite films can be potential candidates for applications in light emitting devices and also as low threshold saturable absorbers.","PeriodicalId":337446,"journal":{"name":"2012 IV International Congress on Ultra Modern Telecommunications and Control Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128204287","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

Proposed model of mixed-WDM systems resulting from development trends in optical transport and access networks 根据光传输和接入网的发展趋势，提出了混合wdm系统的模型

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459729

A. Udalcovs, V. Bobrovs

{"title":"Proposed model of mixed-WDM systems resulting from development trends in optical transport and access networks","authors":"A. Udalcovs, V. Bobrovs","doi":"10.1109/ICUMT.2012.6459729","DOIUrl":"https://doi.org/10.1109/ICUMT.2012.6459729","url":null,"abstract":"The authors have investigated the optical signal transmission over the wavelength division multiplexed (WDM) fiber optic transmission systems (FOTS) that are offered as a model for the future design of backbone optical networks. The proposed model is fully characterized by the modulation formats used for the manipulation of optical signal freedom degrees and particular channel's bitrate. In this paper investigated mixed-WDM system complies to the following configuration scheme: [1st, 4th and 7th channels: NRZ-OOK, R= 10 or 40 Gbit/s] - [2nd, 5th and 8th channels: 2-POLSK, R= 10 or 40 Gbit/s] - [3rd, 6th and 9th channels: NRZ - DPSK, R= 10 or 40 Gbit/s]. This research revealed not only the optimal configuration of such FOTS that secures the lowest in system's channels detected signals bit-error rate but also the frequency plan for channels central wavelength that allows achieving the maximum allowable systems spectral efficiency. In addition, the maximum permissible transmission distance for the spectrally efficient configurations of mixed-WDM FOTS and the impact of nonlinear effects to optical signal transmission are evaluated.","PeriodicalId":337446,"journal":{"name":"2012 IV International Congress on Ultra Modern Telecommunications and Control Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128481954","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

Multiuser transmit precoding based on outdated interference alignment 基于过时干扰对准的多用户传输预编码

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459655

D. Aziz, A. Weber

引用次数: 1

To ask or to sense? Planning to integrate speech and sensorimotor acts 问还是感觉?计划整合语言和感觉运动行为

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459669

N. Mavridis, Haiwei Dong

引用次数: 9

Determination of Photonic Crystal Fiber parameters with effects of nonlinearities in supercontinuum generation 超连续谱产生非线性影响下光子晶体光纤参数的确定

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459737

S. Shashidharan, J. Johny

引用次数: 2

Modelling attacks and challenges to wireless networks 无线网络的建模攻击和挑战

2012 IV International Congress on Ultra Modern Telecommunications and Control Systems Pub Date : 2012-10-01 DOI: 10.1109/ICUMT.2012.6459774

Dongsheng Zhang, Santosh Ajith Gogi, D. Broyles, Egemen K. Çetinkaya, J. Sterbenz

{"title":"Modelling attacks and challenges to wireless networks","authors":"Dongsheng Zhang, Santosh Ajith Gogi, D. Broyles, Egemen K. Çetinkaya, J. Sterbenz","doi":"10.1109/ICUMT.2012.6459774","DOIUrl":"https://doi.org/10.1109/ICUMT.2012.6459774","url":null,"abstract":"Due to the tremendous potential of MANETs (mobile ad hoc networks) for deployment in commercial and military services, a thorough understanding of network behaviour when exposed to challenges is essential for constructing a resilient and survivable MANET. Therefore, it is vital to have a comprehensive framework that can model it under various network attacks and challenges. The MANET environment has a dynamic and intermittent connectivity resulting from channel fading and mobility of the nodes, which makes it difficult to model the network as well as its challenges. We provide a model to simulate malicious and area-based challenges to wireless networks. In the modelling of malicious attacks, we treat MANETs as time-varying graphs (TVGs) represented as a weighted adjacency matrix, in which the weights refer to the link availability. We evaluate the relations between node significance and weighted centrality metrics. Area-based challenges representative of real-world scenarios are also modelled. Our ultimate goal is to provide a comprehensive network challenge model of MANETs and also heterogeneous networks.","PeriodicalId":337446,"journal":{"name":"2012 IV International Congress on Ultra Modern Telecommunications and Control Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129388127","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: 22