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2010 IEEE Latin-American Conference on Communications最新文献

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Effects of topology and mobility in bio-inspired synchronization of mobile ad hoc networks 拓扑和移动性对移动自组织网络仿生同步的影响
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5640976
Gabriel A. Puerta, Edgar A. Aguirre, M. Alzate
{"title":"Effects of topology and mobility in bio-inspired synchronization of mobile ad hoc networks","authors":"Gabriel A. Puerta, Edgar A. Aguirre, M. Alzate","doi":"10.1109/LATINCOM.2010.5640976","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5640976","url":null,"abstract":"The interest on firefly approaches to the problem of synchronizing the nodes of a wireless ad hoc communication network is rising, because of its efficiency and efficacy. In this paper we show that it is enough to have an indirect interaction among nodes, either spatially (through multi-hop paths), or temporally (through mobility) to achieve synchronism among them. As the interactions among nodes increases, global synchronization emerges faster.","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114594521","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
Preliminary internetworking simulation of the QB50 cubesat constellation QB50立方体卫星星座初步互联仿真
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5640977
Héctor Bedón, Carlos Negrón, Jorge Llantoy, Carlos Miguel Nieto, C. Asma
{"title":"Preliminary internetworking simulation of the QB50 cubesat constellation","authors":"Héctor Bedón, Carlos Negrón, Jorge Llantoy, Carlos Miguel Nieto, C. Asma","doi":"10.1109/LATINCOM.2010.5640977","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5640977","url":null,"abstract":"Constellations of small satellites now become a great alternative for scientific missions to study Earth. As a result, they should be considered appropriate communication mechanisms to retrieve the data collected. This article studies the possibility to implement TCP and UDP over IP through the use of intersatellite links and distributed ground stations, such as Genso project. We evaluate parameters like delay end-to-end and throughput for different configurations of the QB50 constellation proposed by von Karman Institute for Fluids Dynamics (VKI).","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124454790","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: 32
A comparison of Kalman-based schemes for localization and tracking in sensor systems 传感器系统中基于卡尔曼的定位与跟踪方案的比较
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5640986
Julian Alberto Patino, J. Espinosa, R. E. Correa
{"title":"A comparison of Kalman-based schemes for localization and tracking in sensor systems","authors":"Julian Alberto Patino, J. Espinosa, R. E. Correa","doi":"10.1109/LATINCOM.2010.5640986","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5640986","url":null,"abstract":"The challenge of target tracking is one of the most important applications of WSNs (Wireless Sensor Networks). Traditionally, Kalman filter and its derivatives are some of the most popular algorithms for solving the signal tracking problem. In a WSNs tracking application, the target motion and state update dynamics might be modelled by linear or non-linear structures depending on the specific scenario. This paper compares extended Kalman Filters with the P, PV and PVA dynamics models for object tracking in sensor networks.","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131022859","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
PLC link control based on minimal total distance and LDPC codes 基于最小总距离的PLC链路控制和LDPC代码
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5641006
Martin Guzzo, Marcelo J. Segura, Juan Pablo Aguiar, H. Daniel Patiño
{"title":"PLC link control based on minimal total distance and LDPC codes","authors":"Martin Guzzo, Marcelo J. Segura, Juan Pablo Aguiar, H. Daniel Patiño","doi":"10.1109/LATINCOM.2010.5641006","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5641006","url":null,"abstract":"Multimedia applications like high definition digital television push the manufacturers to increase available bandwidth mainly in Powerline Communication (PLC) links. Because of this needs in this work a PLC link control is developed to maximize the information rate meanwhile the bit error rate (BER) is maintained under a desired reference limit. The developed control system has a unique variable called minimal total distance and the feedback loop signal is estimated from the low-density parity check (LDPC) decoder iterations. These mentioned characteristics enable a fast and simple control scheme. In order to evaluate the control system behavior a complete Powerline (PL) link was modeled in a matrix form and simulated with a measured PL channel model and with an additive white Gaussian noise (AWGN) channel. The implemented PL link reaches 570Mbps in AWGN. Finally the BER control shows a good response under a severe random walk SNR channel variation.","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124766519","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
Packet variation delay distribution discrimination based on Kullback-Leibler divergence 基于Kullback-Leibler散度的分组变异时延分布判别
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5641122
L. Rizo-Dominguez, D. Torres-Román, D. Munoz-Rodriguez, C. Vargas-Rosales
{"title":"Packet variation delay distribution discrimination based on Kullback-Leibler divergence","authors":"L. Rizo-Dominguez, D. Torres-Román, D. Munoz-Rodriguez, C. Vargas-Rosales","doi":"10.1109/LATINCOM.2010.5641122","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5641122","url":null,"abstract":"In many real-time applications the Quality of Service (QoS) is dominated by jitter. Currently jitter generators are based on Laplace distribution. Nevertheless, the observed jitter measurements depart from that distribution. As a matter of fact data resembles those of a t-Student distribution, and it is also known that Internet traffic presents heavy tailed behavior that can be modeled with alpha-stable distributions. The intention of this work is to find which of these distributions has the best fitting. For this purpose, we collect extensive (round trip time) RTT measurements, and show that the alpha-stable distribution models the jitter adequately. Fitness test included Kullback-Leibler divergence and P-P plot criteria. Alpha-stable parameters are dependent on the transmission hop numbers.","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"15 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114007478","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
Performance of WiMAX packet schedulers for multi-class traffic 多类别流量的WiMAX分组调度器性能
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5640994
G. Castellanos, J. Khan
{"title":"Performance of WiMAX packet schedulers for multi-class traffic","authors":"G. Castellanos, J. Khan","doi":"10.1109/LATINCOM.2010.5640994","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5640994","url":null,"abstract":"With the increasing demand for multimedia services on wireless networks, it is important to optimise air interface parameters to maximise throughput and QoS. In this paper, we examine the effect of WiMAX burst mapping and Round Robin - based packet schedulers on multimedia traffic and network capacity. In this work, we have simulated the IEEE802.16e air interface to examine the downlink channel performance in terms of subframe usage and subframe wastage. The paper presents simulation analysis of the IEEE802.16e downlink service flows for multimedia traffic using an OPNET model. Comparing the characteristics of the service flow parameters, the packet schedulers and the subframe resource allocation methods, we define a new scheduling algorithm based in the service flows QoS configured parameters and the WiMAX OFDMA subframe structure. The proposed new MDRR packet-scheduling algorithm for multimedia traffic shows improvements in the allocation procedures reducing the wastage from 40% down to 20%, improving subframe usage from 60% to 80% leading to serve 10 more users in the network.","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129125057","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: 7
Evaluating the impact of acknowledgment strategies on message delivery rate in wireless sensor networks 评估无线传感器网络中确认策略对消息传递速率的影响
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5641000
Ricardo González, Maribel Acosta
{"title":"Evaluating the impact of acknowledgment strategies on message delivery rate in wireless sensor networks","authors":"Ricardo González, Maribel Acosta","doi":"10.1109/LATINCOM.2010.5641000","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5641000","url":null,"abstract":"In WSNs, several strategies are being developed to guarantee the delivery of information messages. Despite the fact that these efforts increase the delivery rate, they also imply an additional network overhead that could drain the node's batteries power. As a result, if a node runs out of battery power before its time it will not be able to deliver data anymore, thus affecting the whole system's operation. This research compares two confirmation delivery strategies based on explicit and implicit acknowledgment, which could take advantage of wireless communication features to deliver sensed data with efficiency, and also manage the node energy resources in such a way that the continuous operation of the WSNs could be extended. A WSN simulation model on Visual Sense/Ptolemy II modeling framework was built to compare these two acknowledgment strategies. As a result of this evaluation we can see that the implicit acknowledgment strategy reaches a slightly better reliability with a lower cost","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125334467","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
A greener method for content sharing in mobile ad hoc networks 移动自组织网络中更环保的内容共享方法
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5640998
Cesar A. Gomez, Jorge E. Ortiz
{"title":"A greener method for content sharing in mobile ad hoc networks","authors":"Cesar A. Gomez, Jorge E. Ortiz","doi":"10.1109/LATINCOM.2010.5640998","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5640998","url":null,"abstract":"A mobile ad hoc network (MANET) is characterized by its dynamic and decentralized topology, which allows exchanging information between mobile nodes without any pre-existing telecommunications infrastructure. However, mobile devices have constrained resources like memory, energy, bandwidth, etc., that must be optimally used in situations where a MANET is needed. For that reason, we propose a greener method for content sharing in MANETs that reduces energy consumption of nodes. We evaluate our method through simulations using J-Sim environment. Simulation results show that our method uses more efficiently the node resources than a centralized content sharing technique.","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"224 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124468540","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
Head exposure to cellular telephones: A system-level study 头部接触移动电话:一项系统级研究
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5641010
H. Abdulla, R. Badra
{"title":"Head exposure to cellular telephones: A system-level study","authors":"H. Abdulla, R. Badra","doi":"10.1109/LATINCOM.2010.5641010","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5641010","url":null,"abstract":"This work is aimed at quantifying the effects of a number of system-level parameters and conditions on the amount of non-ionizing radiation dissipated in the head of cell phone users in the 850 MHz band. The three major cellular technologies of today, namely, GSM, CDMA2000 1X and UMTS, are evaluated. Five randomly chosen commercial products from each technology are investigated in terms of their Specific Absorption Rate (SAR) and maximum transmit power, as reported by the US Federal Communications Commission (FCC). A statistical system model for urban and suburban cells is used to calculate, with the help of the uplink power budget and the corresponding power control mechanisms, the statistics of the phone transmit power via Monte Carlo simulations. A linear model relating SAR and transmitted power is then used to obtain SAR statistics over the entire cell. Results show some minor differences among the technologies considered, and also between urban and suburban environments, but more importantly, they show a strong correlation between SAR levels and the percentage of cell area that is covered, which in turn depends on key system design parameters such as cell density, cell tower height, and the use of certain RF techniques.","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122594043","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: 10
Dependability and performability modeling of voice and data networks 语音和数据网络的可靠性和可执行性建模
2010 IEEE Latin-American Conference on Communications Pub Date : 2010-11-18 DOI: 10.1109/LATINCOM.2010.5641125
Almir Pereira Guimares, P. Maciel, Rivalino Matias
{"title":"Dependability and performability modeling of voice and data networks","authors":"Almir Pereira Guimares, P. Maciel, Rivalino Matias","doi":"10.1109/LATINCOM.2010.5641125","DOIUrl":"https://doi.org/10.1109/LATINCOM.2010.5641125","url":null,"abstract":"In this paper, we investigate the performance and dependability modeling of voice and data services in computer networks. We use Stochastic Petri Net as an enabling modeling approach for analytical evaluation of complex scenarios. We apply our proposed modeling approach in a case study to evaluate the dependability of an enterprise network, in terms of Total Cost of Ownership, and to assess the financial impact of outages over voice and data networks. The performability will be analyzed by considering the influence of network topologies.","PeriodicalId":308819,"journal":{"name":"2010 IEEE Latin-American Conference on Communications","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134079902","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: 7
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