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2012 IEEE Colombian Communications Conference (COLCOM)最新文献

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A survey of channel measurement techniques and narrowband channel parameters for vehicular communications 车载通信信道测量技术及窄带信道参数综述
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233648
Herman Fernández, S. Avella, A. J. Campuzano, D. Balaguer, V. M. Rodrigo-Peñarrocha, J. Reig, L. Rubio
{"title":"A survey of channel measurement techniques and narrowband channel parameters for vehicular communications","authors":"Herman Fernández, S. Avella, A. J. Campuzano, D. Balaguer, V. M. Rodrigo-Peñarrocha, J. Reig, L. Rubio","doi":"10.1109/COLCOMCON.2012.6233648","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233648","url":null,"abstract":"Propagation characteristics in vehicular radio channels are affected by time- and frequency-selective behavior due to the multipath propagation effect and the movements of the transmitter, the receiver as well as the relevant scatterers. Measurements are vital for the understanding of propagation channels. This article provides an overview of existing vehicular channel measurements. The vehicular channel measurement techniques are briefly described and classified. Furthermore, we review the channel metrics such as path-loss, signal fading and Doppler spread based on the available literature and we summarize and discuss some measurements results of the reported parameters to describe the propagation narrowband channel characteristics in vehicular environments.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"81 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":"123092794","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
Physical layer performance analysis of a peer to peer communication system based on standard IEEE 802.11g 基于IEEE 802.11g标准的点对点通信系统物理层性能分析
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233674
German Dario Beltran Constain, D. Moreno, Victor Manuel Quintero Florez, Jenny Cuatindioy Imbachi
{"title":"Physical layer performance analysis of a peer to peer communication system based on standard IEEE 802.11g","authors":"German Dario Beltran Constain, D. Moreno, Victor Manuel Quintero Florez, Jenny Cuatindioy Imbachi","doi":"10.1109/COLCOMCON.2012.6233674","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233674","url":null,"abstract":"This paper presents the performance evaluation and analysis at the physical layer of a peer-to-peer communication system based on IEEE 802.11g. This system is associated to a basic communications system, identifying source, channel and receiver. An Ad-hoc network is described, test scenarios and parameters are defined in order to evaluate the performance, finally we show the results of the different tests obtained from the system implementation in the 2.4 GHz ISM (Industrial, Scientific and Medical) band in real scenarios and its behavior against interference.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"180 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":"125824866","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
WRAN and LTE comparison in rural environments 农村环境下WRAN和LTE的比较
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233675
O. E. Herrera, A. Gutierrez, A. M. Ospina, A. Galvis
{"title":"WRAN and LTE comparison in rural environments","authors":"O. E. Herrera, A. Gutierrez, A. M. Ospina, A. Galvis","doi":"10.1109/COLCOMCON.2012.6233675","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233675","url":null,"abstract":"Digital Dividend refers to frequency bands that currently are being occupied by conventional analog television that will be free after the analogue switch off and digital TV deployment. This paper discusses the importance of the 700 MHz band to achieve coverage goals and enhance rural development and economy by increasing levels of broadband Internet access. We performed a technical comparison of two technologies: LTE as a commercial positioned standard, and 802.22 as a new proposed and interesting. Simulation results are obtained operating in the 700 MHz band in rural areas, and finally there are conclusions.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"15 4 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":"116395817","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: 3
Design of a sensor network implemented in a monitored via web prototype 传感器网络的设计实现在一个通过web监控的原型
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233676
D. M. R. Arias, F. Rodriguez, J. D. C. Callejas
{"title":"Design of a sensor network implemented in a monitored via web prototype","authors":"D. M. R. Arias, F. Rodriguez, J. D. C. Callejas","doi":"10.1109/COLCOMCON.2012.6233676","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233676","url":null,"abstract":"This paper presents the development of Telecommunications Engineering project entitled “Design of a wireless sensor network implemented in a prototype web-monitored” by which is to determine the noise factors affecting the communication of IEEE 802.15.4 in industrial environment at Technology Faculty of Universidad Disitrital, through testing, measurement and analysis developed to thereby establish a set of conclusions.","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":"115904567","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
Performance analysis of uplink capacity in IEEE 802.16j transparent mode IEEE 802.16j透明模式下上行链路容量性能分析
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233643
R. Lara, Javier Simó
{"title":"Performance analysis of uplink capacity in IEEE 802.16j transparent mode","authors":"R. Lara, Javier Simó","doi":"10.1109/COLCOMCON.2012.6233643","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233643","url":null,"abstract":"This paper studies system uplink capacity in transparent mode with mobile nodes and fixed relays stations in conformance with IEEE 802.16j. The study shows different simulation scenarios for evaluating uplink capacity in a Mobile Multihop Relay (MMR), with varying numbers and different positioning of relay stations in a transparent mode (T-RS), moreover, two environments are considered, an urban and a rural environment. The results show that IEEE 802.16j must be implemented in an urban environment instead of rural environment. The main conclusions determined in this work are the increase of throughput in relationship with the position of the T-RS and the effective number of T-RS that permit the maximum system increase is using 6 T-RS presenting an improvement of 14% of the system capacity.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"10 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":"117010872","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
Identification of the variables causing the delay in changing channel IPTV service - State of the art 识别导致IPTV服务转换频道延迟的变量——最新技术
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233652
Ernesto Lopez Gonzalez, A. Correa Castrillon, A. N. Cadavid
{"title":"Identification of the variables causing the delay in changing channel IPTV service - State of the art","authors":"Ernesto Lopez Gonzalez, A. Correa Castrillon, A. N. Cadavid","doi":"10.1109/COLCOMCON.2012.6233652","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233652","url":null,"abstract":"Currently, the IPTV service has been able to satisfy the expectation of entertainment and interactivity demanded by the market users, the proper performance of the service involves the solution to a set of challenges inherent IP environment, such as correction loss and delay information Multicast in the signal. This article reviews the most important techniques used to solve the delay in changing channel IPTV service cataloging solutions such as invasive or not, according to the form of bond equipment and / or multicast flows for such a solution.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"25 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":"131885845","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
Supermarket costumers routes-and-times identifier 超市顾客的路线和时间标识符
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233665
J. M. Gómez, A. J. Alvarez, J. B. Rodriguez
{"title":"Supermarket costumers routes-and-times identifier","authors":"J. M. Gómez, A. J. Alvarez, J. B. Rodriguez","doi":"10.1109/COLCOMCON.2012.6233665","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233665","url":null,"abstract":"To optimize any process it is important to examine it, identify problems, analyze them, and, finally, propose solutions. A specific situation where optimization can be useful is the daily activity of grocery shopping in a supermarket. This document describes the process of designing and developing an electronic system that helps to visualize the shopping process in a supermarket. The system proposed monitors the route taken by customers inside the store using the technology of Radio Frequency Identification (RFID). This technology is used to identify the shopping carts as they move around the store. Costumer route information is sent to a central computer wirelessly so it can be processed, stored, and displayed on a screen. The system also processes and stores the time taken by a customer while following his/her path through the store. Having this information could allow the store manager to develop strategies that help to improve the shopping process in the supermarket.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"59 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":"133257751","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
Chromatic dispersion effects in a radio over fiber system with PSK modulation and coherent detection 具有PSK调制和相干检测的光纤无线电系统中的色散效应
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233655
J. J. G. Torres, G. M. V. Durán, N. G. González
{"title":"Chromatic dispersion effects in a radio over fiber system with PSK modulation and coherent detection","authors":"J. J. G. Torres, G. M. V. Durán, N. G. González","doi":"10.1109/COLCOMCON.2012.6233655","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233655","url":null,"abstract":"In this paper, chromatic fiber-dispersion effects are studied in a radio-over-fiber (RoF) system with optical phase modulation and coherent detection at 60, 75 and 100 GHz using binary and quaternary phase-shift-keying (PSK) modulation over 40 and 80 km of single-mode-fiber. Electrical spectrum at the receiver and constellation diagrams are analyzed, and the bit error rate (BER) are calculated varying the signal to noise ratio (SNR), reaching a successful transmission below 17 dB in QPSK and 12 dB in BPSK of SNR for a 1 Gbps, showing in BPSK transmissions similar BER using different carrier-frequency. In QPSK transmission the influence of higher carrier-frequency is noted with BER increasing.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"37 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":"116721341","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: 3
Optical layer traffic grooming in all-optical WDM networks 全光WDM网络中的光层业务疏导
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233664
W. S. Puche, J. Sierra
{"title":"Optical layer traffic grooming in all-optical WDM networks","authors":"W. S. Puche, J. Sierra","doi":"10.1109/COLCOMCON.2012.6233664","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233664","url":null,"abstract":"Wavelength Division Multiplexing (WDM) in optical networks, it is considered as a possible alternative for providing the high bit rate required for future services. When a link (light-paths) is established, if physical-layer issues are not considered, the possible distinctions between a short lightpath and a long lightpath gets ignored. In order to make such distinction, optical signal to noise ratio (OSNR) performance at the lightpath end needs to be taken care of. The data streams flowing through different lightpaths may not have adequate OSNR resulting in increased bit error rate (BER) for some of the lightpaths. We propose and experimentally demonstrate a novel optical layer grooming technique for All-optical networks (AONs). This article analyze the optical signal dispersion in view of the FWM phenomenon in supporting Traffic Grooming. Highlighting its importance in the future of design of optical communications.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"64 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":"115881955","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
Performance analysis of WiMAX polling service for smart grid meter reading applications 面向智能电网抄表应用的WiMAX轮询服务性能分析
2012 IEEE Colombian Communications Conference (COLCOM) Pub Date : 2012-05-16 DOI: 10.1109/COLCOMCON.2012.6233661
German D. Castellanos, Jamil Y. Khan
{"title":"Performance analysis of WiMAX polling service for smart grid meter reading applications","authors":"German D. Castellanos, Jamil Y. Khan","doi":"10.1109/COLCOMCON.2012.6233661","DOIUrl":"https://doi.org/10.1109/COLCOMCON.2012.6233661","url":null,"abstract":"With the increasing demand of electrical energy in the near future it is necessary to develop an efficient load demand management system for the electricity grids. To implement such a load demand management system recently, the smart grid architecture has been proposed. Future electricity grids can be converted to a smart grid by overlaying a hierarchical communication network on the electricity distribution system which will allow real-time information exchange between different operational entities in a grid. This paper presents a wireless network architecture based on the physical and MAC layers of the WiMAX standard serving smart meters and different metering applications in the smart grid. Through extensive simulations using OPNET simulation models we analyze cell size, terrain models, channel capacity, packet losses, transmission power, Interpolling time -IPT- and transport protocols to outline an optimal network configuration to fulfill the communication needs of the smart grid applications.","PeriodicalId":412983,"journal":{"name":"2012 IEEE Colombian Communications Conference (COLCOM)","volume":"64 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":"127294810","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
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