发布求助
文献互助 智能选刊 最新文献

2012 IEEE Colombian Communications Conference (COLCOM)最新文献

筛选
英文 中文
MAC protocols analysis for Cognitive Radio in a network MANET 网络MANET中认知无线电的MAC协议分析
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233644
L.F. Pedraza, Judy C. Guevara, I. Paez
{"title":"MAC protocols analysis for Cognitive Radio in a network MANET","authors":"L.F. Pedraza, Judy C. Guevara, I. Paez","doi":"10.1109/COLCOMCON.2012.6233644","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233644","url":null,"abstract":"This paper presents a comparative analysis between the mechanisms of media access control IEEE 802.11 and MMAC-CR (Multichannel MAC protocol for Cognitive Radio) in MANETs (Mobile Ad Hoc Networks). The IEEE 802.11 standard allows the use of multiple channels available at the physical layer, but its MAC protocol is designed for a single channel. However, a MAC protocol of a single channel does not work well in a multichannel environment due to the hidden terminal problem. The simulation results show how the MMAC-CR protocol allows a better use of spectral opportunities thereby increasing the throughput of the MANET network.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126477898","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
Beam propagation method (BPM) for bend loss analysis in optics waveguide 用于光学波导弯曲损耗分析的光束传播法
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233667
J. Córdoba-Ramírez, F. Amaya-Fernandez, Hugo E. Hernández-Figueroa, H. Fragnito
{"title":"Beam propagation method (BPM) for bend loss analysis in optics waveguide","authors":"J. Córdoba-Ramírez, F. Amaya-Fernandez, Hugo E. Hernández-Figueroa, H. Fragnito","doi":"10.1109/COLCOMCON.2012.6233667","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233667","url":null,"abstract":"This paper present a numerical simulation study of bending loss in planar optical waveguides, at wavelengths around 1550 nm, using the Beam Propagation Method (BMP), for the purpose to reduce the physical size of photonic components and for the design of on-chip optical components for communication systems.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128178065","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
DPSK for optical access networks 光接入网DPSK
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233666
C. C. Rodríguez, A. M. C. Soto, A. Molina
{"title":"DPSK for optical access networks","authors":"C. C. Rodríguez, A. M. C. Soto, A. Molina","doi":"10.1109/COLCOMCON.2012.6233666","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233666","url":null,"abstract":"The development of technologies for optical access networks and user demand for more bandwidth has enabled consider increasing rates and improve the current coverage of access networks. Currently there are various ways to achieve this goal, one relates to the use of modulations in the signal processing in both the OLT and the ONU. This process has already begun studying for transport networks with highly complex formats and costly implementation. DPSK (Diferencial Phase Shift Key) modulation has been identified for possible implementation in the context of access. This paper describes how we implement to 10Gpbs and testing with 2 different types of fibers.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127305429","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
Analysis of the topology control in ad hoc networks ad hoc网络拓扑控制分析
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233646
P. Cortes, J. A. Arevalo A
{"title":"Analysis of the topology control in ad hoc networks","authors":"P. Cortes, J. A. Arevalo A","doi":"10.1109/COLCOMCON.2012.6233646","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233646","url":null,"abstract":"Among the proposed solutions to few problems found in ad hoc networks, topology control can ensure a proper battery consumption, to avoid interference between the different nodes in the network and controlling the effect of the low transmission capacity that some nodes may show. This paper presents the results of tests using several scenarios with different transmission power levels, designed and implemented with OMNeT++. It assessed the average consumption of energy by the nodes, the network frames with interference, the average of backoff and the number of frames received. This allowed seeing the positive impact of the use of topology control on the network.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114497449","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
Design of a wireless communications network for advanced metering infrastructure in a utility in Colombia 为哥伦比亚一家公用事业公司的先进计量基础设施设计无线通信网络
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233649
R. Castellanos, P. Millán
{"title":"Design of a wireless communications network for advanced metering infrastructure in a utility in Colombia","authors":"R. Castellanos, P. Millán","doi":"10.1109/COLCOMCON.2012.6233649","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233649","url":null,"abstract":"Utilities are considering the adoption of guidelines for the evolution of the electric grid in the near future, better known as Smart Grid. An important approach to this evolution is the improvement of energy meter management and the implantation of demand response and demand control programs supported by an advanced metering infrastructure. This paper describes the considerations to establish a favorable environment to develop the first step toward Smart Grid, taking like a starting point the deployment of an advanced metering infrastructure system in a major Utility in the south west of Colombia. The design of the communications architecture using Wireless Local Area Networks and ZigBee is presented, along with the performance evaluation of the network model.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129401661","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: 15
Electromagnetic field measurement method to generate radiation map 电磁场测量法生成辐射图
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233672
Cesar Camilo Rodriguez, Celso Andrés Forero, Homero Ortega Boada
{"title":"Electromagnetic field measurement method to generate radiation map","authors":"Cesar Camilo Rodriguez, Celso Andrés Forero, Homero Ortega Boada","doi":"10.1109/COLCOMCON.2012.6233672","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233672","url":null,"abstract":"An electromagnetic field monitoring method is proposed and tested during measurement campaigns at urban zone of Bucaramanga city, Colombia. Communication tools are used integrated with a Geographic Information System, an online server and the access to data base by means of web services. A set of measuring equipment is connected to the communication system in order to manage a great amount of information and to analyze it, but specially to establish whether the international recommendations are being met or not. It is also possible to know which kind of factors are contributing to radiation level increasing by using NARDA field meters, Spectrum analyzers and other possible equipment, all of them controlled remotely through fixed or mobile terminals. Based on measured points, a continuous surface of radiation levels is plotted on a geographic map by using an interpolation algorithm.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114978444","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
Angle calculation of birefringence for the study of PMD using Mohr's circle in standard single mode fibers 用莫尔圆研究标准单模光纤PMD的双折射角度计算
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233669
J. Zapata, A. Cárdenas, G. Quintero
{"title":"Angle calculation of birefringence for the study of PMD using Mohr's circle in standard single mode fibers","authors":"J. Zapata, A. Cárdenas, G. Quintero","doi":"10.1109/COLCOMCON.2012.6233669","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233669","url":null,"abstract":"PMD generates random widening of the pulses in communications systems for standard single mode fibers. This randomness causes an inter-symbol interference problem in the signal detection. We propose a method to calculate the birefringence angle is traced by the axes of birefringence, by using a geometric tool important for engineering such as Mohr's circle. This angle will allow addressing the problem of concatenation to standard single mode fibers of large length, about the signal behavior of the fiber.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131289027","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
Power data management on the Internet space: Green ICT projects in Japan 互联网空间的电力数据管理:日本的绿色ICT项目
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233680
H. Ochiai
{"title":"Power data management on the Internet space: Green ICT projects in Japan","authors":"H. Ochiai","doi":"10.1109/COLCOMCON.2012.6233680","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233680","url":null,"abstract":"After the M9.0 earthquake in 2011, Japan has faced severe electric shortage. The tsunami caused by the earthquake destroyed many power plans along the coast lines, and still, sufficient power is not provided even in 2012. Electricity (i.e., power data) management using information and communication technology (ICT) is getting more and more popular these days. Many projects (not only by academia but also by vendors and service providers) have been established to control such electricity using the Internet technology. This paper reports the work of ”66kV power data management on the Internet space”, which we have built at five campuses of the University of Tokyo.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128076840","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: 14
Numerical investigation of low level OSNR estimation based on gaussian fitting and non-linear least squares on AAH in noisy optical communication links 基于高斯拟合和非线性最小二乘的噪声光通信链路AAH低水平OSNR估计数值研究
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233657
C. Castro, D. Peluffo O, O. M. Diaz, N. G. Guerrero
{"title":"Numerical investigation of low level OSNR estimation based on gaussian fitting and non-linear least squares on AAH in noisy optical communication links","authors":"C. Castro, D. Peluffo O, O. M. Diaz, N. G. Guerrero","doi":"10.1109/COLCOMCON.2012.6233657","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233657","url":null,"abstract":"An extended digital estimation approach of optical signal to noise ratio (OSNR) based on statistical analysis of asynchronous amplitude histograms (AAH) of the received optical signal is presented and numerically investigated. Accurate OSNR estimation on highly noisy optical transmission link is achieved. Furthermore, the proposed OSNR estimation approach may be digitally adjusted to any Cartesian modulation format such as multilevel phase shift keying and quadrature amplitude modulated optical signals without degrading estimation accuracy. The OSNR estimation methodology is based on kernel density estimation with Gaussian kernels and non-linear least-squares regression (NLLS). Heuristic searches are no longer needed and the process becomes more reliable and robust. Reported results show accurate OSNR estimation with less than 15% error estimation on the simulated OSNR value for different signal modulation formats, exhibiting a more confident estimation system, with comparable results among formats because of the statistical nature histogram instead of the regular counting bins histogram.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129878774","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
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信