2019 IEEE Colombian Conference on Communications and Computing (COLCOM)最新文献_第2页

On the Design of a New 4x4 Coupler for C Band based on a 180° Coupler at Microstrip Technology 基于微带180°耦合器的新型4 × 4 C波段耦合器设计

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809146

R. Haro-Báez, D. Benítez, David Romero

{"title":"On the Design of a New 4x4 Coupler for C Band based on a 180° Coupler at Microstrip Technology","authors":"R. Haro-Báez, D. Benítez, David Romero","doi":"10.1109/ColComCon.2019.8809146","DOIUrl":"https://doi.org/10.1109/ColComCon.2019.8809146","url":null,"abstract":"In this paper, a new design for a 180˝ hybrid directional coupler is presented and implemented, the coupler works in the frequency range of the C band spectrum from 5.9 to 6.1 GHz in UP-LINK mode. The designed coupler achieves less weight, use less coupler sections, reaches phase difference in the output ports and its able to handle larger bandwidths. First, a study of the state of the art about this type of couplers, their mathematical analysis, and the methods to be used, are reviewed together with the initial design of a 180˝ hybrid coupler section. Then, the electromagnetic behavior of this hybrid ring, as well as its coupling to the host transmission line, are studied, and analytical equivalent-circuit models are also proposed. A new multiple sections coupler with 4 input and 4 output ports, was then generated from this initial hybrid ring design, with the aim of increasing the bandwidth. A final directional coupler implementation was then fabricated using Microstrip technology for its subsequent analysis at 6 GHz. Both simulation and experimental results show good performance agreement. A 16.67% bandwidth was achieved.","PeriodicalId":447783,"journal":{"name":"2019 IEEE Colombian Conference on Communications and Computing (COLCOM)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125201749","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

A hybrid alarm management strategy in signature-based intrusion detection systems 基于签名的入侵检测系统中的混合报警管理策略

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809121

Francisco Javier Muñoz Cortés, Natalia Gaviria Gómez

{"title":"A hybrid alarm management strategy in signature-based intrusion detection systems","authors":"Francisco Javier Muñoz Cortés, Natalia Gaviria Gómez","doi":"10.1109/ColComCon.2019.8809121","DOIUrl":"https://doi.org/10.1109/ColComCon.2019.8809121","url":null,"abstract":"Signature-based Intrusion Detection Systems (IDS) are a key component in the cybersecurity defense strategy for any network being monitored. In order to improve the efficiency of the intrusion detection system and the corresponding mitigation action, it is important to address the problem of false alarms. In this paper, we present a comparative analysis of two approaches that consider the false alarm minimization and alarm correlation techniques. The output of this analysis provides us the elements to propose a parallelizable strategy designed to achieve better results in terms of precision, recall and alarm load reduction in the prioritization of alarms. We use Prelude SIEM as the event normalizer in order to process security events from heterogeneous sensors and to correlate them. The alarms are verified using the dynamic network context information collected from the vulnerability analysis, and they are prioritized using the HP Arsight priority formula. The results show an important reduction in the volume of alerts, together with a high precision in the identification of false alarms.","PeriodicalId":447783,"journal":{"name":"2019 IEEE Colombian Conference on Communications and Computing (COLCOM)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122463071","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

Repetition rate and spectral performance for short EDFL cavities using a D-shaped fiber/graphene saturable absorber 使用d型光纤/石墨烯饱和吸收材料的短EDFL腔的重复率和光谱性能

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809111

Jhon A. Lopera, Karen Arroyave, J. Zapata

引用次数: 2

Design and construction of a low cost prototype for lecture and processing of electromyographic signals using multichannel techniques and spatial filtering 设计和建造一个低成本的原型，用于讲座和使用多通道技术和空间滤波处理肌电信号

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809124

Andrés Olaya Patiño, David Martínez Cifuentes, Carlos Andres Perilla Rozo

引用次数: 0

Implementation of a parameterizable sorting network for spatial modulation detection on FPGA 空间调制检测的可参数化排序网络的FPGA实现

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809112

I. Mendoza, José Luis Pizano Escalante, Joaquín Cortez González, Omar Humberto Longoria Gándara

引用次数: 1

SDR-Based Channel Emulator for Vehicular Communications 基于sdr的车载通信信道仿真器

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809164

Ángel E. Ruiz-García, C. Gutiérrez, J. Vázquez-Castillo, J. Cortez

{"title":"SDR-Based Channel Emulator for Vehicular Communications","authors":"Ángel E. Ruiz-García, C. Gutiérrez, J. Vázquez-Castillo, J. Cortez","doi":"10.1109/ColComCon.2019.8809164","DOIUrl":"https://doi.org/10.1109/ColComCon.2019.8809164","url":null,"abstract":"Recently, there has been an increase in the development of new intelligent transportation systems. Specifically, this technology was proposed with the aim of increasing road safety and improving traffic flow management by information interchange among vehicles. In this sense, the dedicated radio short-range communication (DSRC) technology enables reliable vehicle-to-vehicle (V2V) and vehicleto-infrastructure (V2I) communication. However, in order to guarantee the correct operation of the radio transmission systems, it is necessary to test the transmitter and receiver devices under controlled conditions. A channel emulator offers a fast and non-expensive solution to perform these tests. This paper presents a new non wide-sense stationary uncorrelated scattering (non-WSSUS) channel emulator for vehicle communications, which is based on software defined radios (SDR). Implementation results show that the proposed channel emulator can reproduce propagation environment corresponding to non-WSSUS channels with exactness. This will allow testing of communications systems under development using the SDR-based V2V-V2I channel emulator.","PeriodicalId":447783,"journal":{"name":"2019 IEEE Colombian Conference on Communications and Computing (COLCOM)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125463896","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

Implementation of a SD-WAN for the interconnection of two software defined data centers 为两个软件定义的数据中心互连实施SD-WAN

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809153

Rubén E. Mora-Huiracocha, Pablo L. Gallegos-Segovia, P. E. Vintimilla-Tapia, J. Bravo-Torres, E. J. Cedillo-Elias, Víctor M. Larios-Rosillo

{"title":"Implementation of a SD-WAN for the interconnection of two software defined data centers","authors":"Rubén E. Mora-Huiracocha, Pablo L. Gallegos-Segovia, P. E. Vintimilla-Tapia, J. Bravo-Torres, E. J. Cedillo-Elias, Víctor M. Larios-Rosillo","doi":"10.1109/ColComCon.2019.8809153","DOIUrl":"https://doi.org/10.1109/ColComCon.2019.8809153","url":null,"abstract":"At present, the constant development of information and communication technologies (ICTs) is allowing the creation of applications and services that require the automated and individualized deployment of resources on the network. However, the traditional or inherited infrastructure presents innovation difficulties as a consequence of the cost that its adaptation would imply, therefore it is necessary to find alternatives that efficiently manage the existing resources. A new paradigm arises based on the decoupling of the control plane from the data plane of each device to place it in a centralized entity, giving way to the use of software-based technologies. This paper proposes the implementation of a wide area network defined by software (SD-WAN) to connect two data centers defined by software, which guarantees a predefined quality of service (QoS) and traffic prioritization. Several simulations are carried out in scenarios governed by VoIP services and bandwidth, delay, jitter and CPU load are measured. Among the results obtained, the validity of the mentioned solutions is demonstrated.","PeriodicalId":447783,"journal":{"name":"2019 IEEE Colombian Conference on Communications and Computing (COLCOM)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121569820","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

Method of moments (MoM) versus GTD for the analysis of aperture antennas 矩量法与GTD法在孔径天线分析中的应用

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809183

Oscar F. Corredor, Margy L. Luna, Jaime A. Avila, Sergio L. Bermudez

引用次数: 0

Implementation of fog computing for data pre-processing in an IoT and cloud computing scenario 在物联网和云计算场景中实现雾计算数据预处理

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809165

Paúl A. Montesdeoca-Mendez, Pablo L. Gallegos-Segovia, Gabriel A. León-Paredes, P. E. Vintimilla-Tapia, J. Bravo-Torres, Víctor M. Larios-Rosillo

{"title":"Implementation of fog computing for data pre-processing in an IoT and cloud computing scenario","authors":"Paúl A. Montesdeoca-Mendez, Pablo L. Gallegos-Segovia, Gabriel A. León-Paredes, P. E. Vintimilla-Tapia, J. Bravo-Torres, Víctor M. Larios-Rosillo","doi":"10.1109/ColComCon.2019.8809165","DOIUrl":"https://doi.org/10.1109/ColComCon.2019.8809165","url":null,"abstract":"Currently, Internet of Things (IoT) is a technological paradigm that is based on the collection of environmental data on a multitude of parameters (climatic, industrial, human, among others) through everyday objects to send it to higher instances such as data centers or cloud computing services, where it is processed and stored. Under this concept, despite the benefits of equipping any device with exceptional capacities, significant congestion is generated in the network as a result of an increasing number of connections. Consequently, fog computing emerges as a valid solution, since by performing local data pre-processing, the transmitted load is reduced. In addition, it grants the possibility of implementing adequate security measures, ensuring the veracity of the information. This research proposes the design of an IoT system for measuring environmental variables, consisting on a WSN, fog computing and cloud computing, which deploys end-to-end encryption techniques. Different tests are carried out, using the concept of living labs, reflected in a Web application that contemplates measurements of three indicators: carbon dioxide levels, polluting particles and environmental noise.","PeriodicalId":447783,"journal":{"name":"2019 IEEE Colombian Conference on Communications and Computing (COLCOM)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129627469","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

Three-Dimensional Spatial Coding Based on Hybrid Pulse Width and Pulse Position Modulation for Simultaneous Data Transmission and Brightness Control on RGB LED Arrays 基于脉冲宽度和脉冲位置混合调制的RGB LED阵列三维空间编码同步数据传输和亮度控制

2019 IEEE Colombian Conference on Communications and Computing (COLCOM) Pub Date : 2019-06-01 DOI: 10.1109/ColComCon.2019.8809151

J. L. Henao, N. Guerrero González, J. García-Álvarez

{"title":"Three-Dimensional Spatial Coding Based on Hybrid Pulse Width and Pulse Position Modulation for Simultaneous Data Transmission and Brightness Control on RGB LED Arrays","authors":"J. L. Henao, N. Guerrero González, J. García-Álvarez","doi":"10.1109/ColComCon.2019.8809151","DOIUrl":"https://doi.org/10.1109/ColComCon.2019.8809151","url":null,"abstract":"A three dimensional (3D) spatial coding scheme is proposed for simultaneous control of illumination and data transmission in a Visible Light Communication (VLC) system with RGB LEDs arrays . The proposed and experimentally tested coding is based on hybrid Multi-Pulse Position Modulation (M-PPM) for data encoding, in which the number of pulses (slots) control the amount of current delivered to the LED such as the Pulse Width Modulation (PWM). The implemented VLC system complies with the dual functionality, indoor lighting and data transmission, also proposes an alternative solution for the problem of the interdependence between the speed of data transmission and the variation of the levels of illumination. In this paper, the feasibility of implementing the proposed scheme using low cost elements and using digital demodulation is demonstrated. A constant transmission speed of 6 Kbps was obtained with two 10W RGB LEDs at 0.9 meters from the OPT101 photodetector of Texas Instruments, with a range of illumination ranging between 25% and 85% of the possible light power of the sources LED.","PeriodicalId":447783,"journal":{"name":"2019 IEEE Colombian Conference on Communications and Computing (COLCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125447753","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