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2021 Third South American Colloquium on Visible Light Communications (SACVLC)最新文献

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Mode Division Multiplexing (MDM) Based Hybrid PON-FSO System for Last-Mile Connectivity 基于模式分复用(MDM)的最后一英里连接混合PON-FSO系统
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652327
Harjeevan Singh, N. Mittal, R. Miglani, A. Majumdar
{"title":"Mode Division Multiplexing (MDM) Based Hybrid PON-FSO System for Last-Mile Connectivity","authors":"Harjeevan Singh, N. Mittal, R. Miglani, A. Majumdar","doi":"10.1109/SACVLC53127.2021.9652327","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652327","url":null,"abstract":"In this work, we have demonstrated mode division multiplexing (MDM) based high-speed passive optical network (PON) and free-space optical (FSO) hybrid link for providing a practical solution to last-mile bottleneck issues. The proposed hybrid link has a PON with fiber length of 10 km and 20 km, integrated with an FSO system capable of supporting high-speed connectivity for end-users within the link range of 100–1000 $m$. Also, MDM has been incorporated as a part of the strategy to improve the performance of FSO links under adverse atmospheric conditions. Four different Laguerre-Gaussian (LG) modes i.e. LG 00, LG 01, LG 10, and LG 11, have been used here with each mode capable of supporting user data of 10 Gbps. Among various modes, the proposed link has demonstrated promising results for LG 00 mode as compared to other modes. Additionally, in contrast to conventional FSO links, it has been observed that the MDM-FSO link is a highly reliable solution for delivering high-speed last-mile connectivity. However, for FSO links with link range typically beyond 700 $m$, the use of the non-MDM transmission is highly recommended.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122235876","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
The Sum Secrecy Rate of NOMA-Enabled VLC Network with the Random-Way Point Mobility Model 基于随机路径点移动模型的noma - VLC网络的总保密率
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652303
Fatemeh Bahadori, Seyed Mohammad Sajad Sadough, Zabih Ghassemlooy
{"title":"The Sum Secrecy Rate of NOMA-Enabled VLC Network with the Random-Way Point Mobility Model","authors":"Fatemeh Bahadori, Seyed Mohammad Sajad Sadough, Zabih Ghassemlooy","doi":"10.1109/SACVLC53127.2021.9652303","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652303","url":null,"abstract":"In this paper, we consider a non-orthogonal multiple access enabled cellular visible light communication network, where all users present in the network are moving based on the random way-point mobility model. According to the dynamic behavior of the network, the achievable secrecy rate of the legitimate users has been formulated. In order to allocate power to the legitimate users, the well-known gain ratio power allocation method is modified to improve the network sum secrecy rate (NSSR). The numerical results indicate that, the secrecy performance of the network is improved by employing the modified power allocation method. Furthermore, the effect of field of view (FOV) and the half-power angle have been taken into account and the simulation results show that, the NSSR depends on the FOV and the half-power angla of the optical transceivers.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128753959","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
Remote Control in Smartphone-based Visible Light Communications 基于智能手机的可见光通信远程控制
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652294
Higor Camporez, Yasmim S. Pimassoni, Wesley S. Costal, M. Segatto, Jair A. L. Silva, H. Rocha
{"title":"Remote Control in Smartphone-based Visible Light Communications","authors":"Higor Camporez, Yasmim S. Pimassoni, Wesley S. Costal, M. Segatto, Jair A. L. Silva, H. Rocha","doi":"10.1109/SACVLC53127.2021.9652294","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652294","url":null,"abstract":"The development of a homemade remote-controlled (RC) car using a smartphone as a controller is described in this paper. Considering visible light communication (VLC), a smartphone uses its LED to send information to an RC car built with a low-cost four-wheel drive Arduino kit, and with a low-cost ambient light sensor as a photodiode. The development of this project encourages an interdisciplinarity that considers robotic, programming, control systems, and communication areas. The achieved results are satisfactory in terms of build time and homemade possibility, thus increasing the culture of VLC dissemination. A short video of the RC car can be seen at youtu.be/09Z2nxKxbek.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128577135","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
Acceptance of the implementation of a smart campus based on 5G technology by the University's constituents 接受大学各成员实施基于5G技术的智慧校园
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652255
Liliana Martínez, Fernanda Lozano, I. Soto, P. Palominos, Paulo de Tarso Neves Junior, Cristina Laplagne
{"title":"Acceptance of the implementation of a smart campus based on 5G technology by the University's constituents","authors":"Liliana Martínez, Fernanda Lozano, I. Soto, P. Palominos, Paulo de Tarso Neves Junior, Cristina Laplagne","doi":"10.1109/SACVLC53127.2021.9652255","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652255","url":null,"abstract":"This work systematises the requirements of users circulating in the different spaces of a university campus that can be resolved through the services offered by 5G. The methodology is based on the application of surveys to the different actors that interact on university campuses in three South American countries, in order to focus efforts in each country.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133882686","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
SVM and ANN classification using GLCM and HOG features for COVID-19 and Pneumonia detection from Chest X-rays 基于GLCM和HOG特征的SVM和ANN分类在胸部x射线中检测COVID-19和肺炎
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652248
Carlos Fernandez–Grandon, I. Soto, David Zabala-Blanco, W. Alavia, Verónica García
{"title":"SVM and ANN classification using GLCM and HOG features for COVID-19 and Pneumonia detection from Chest X-rays","authors":"Carlos Fernandez–Grandon, I. Soto, David Zabala-Blanco, W. Alavia, Verónica García","doi":"10.1109/SACVLC53127.2021.9652248","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652248","url":null,"abstract":"Due to the coronavirus pandemic and the lack of an automatic COVID-19 diagnostic system to relieve congestion in health centers and to support the traceability of this disease, this article exposes the implementation of algorithms for automatic diagnosis of lung diseases such as COVID-19 and Pneumonia from chest X-rays (CXR) through GLCM and HOG features extraction using 6300 patches. Then, selecting the best features and different classifiers such as an Support Vector Machine (SVM) and Artificial Neural Network (ANN) to obtain a system maximum accuracy of 93,73% for SVM.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128609152","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
Simulating Radio Coverage with polar Coordinates for Wireless Networks 用极坐标模拟无线网络覆盖
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652280
L. Sergio Cordero, P. Adasme
{"title":"Simulating Radio Coverage with polar Coordinates for Wireless Networks","authors":"L. Sergio Cordero, P. Adasme","doi":"10.1109/SACVLC53127.2021.9652280","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652280","url":null,"abstract":"This paper presents a simulation study of polar coverage signaling which can be applied to different current wireless communication systems. In particular, we use the Polar Radio Coverage feature of Radio Mobile software version 11.6.6 in order to perform an empirical study in real geographical areas including Las Condes and Valparaiso which are two locations in Chile. In this predictive study, all parameters are configured for both the radio base stations (RBS) and mobile stations (MS) located in certain points of the proposed coverage area. This allows obtaining the signal strength and visualizing the range in the covered maps. Subsequently, the data is exported to Google Earth Pro in order to identify the areas without coverage where it is not possible to establish of a point-to-point link communication. Consequently, the establishment of coverage in a given area will guarantee certain signal levels in the receiving equipment while considering different values for the coverage radius and azimuth. Finally, the proposed approach can be applied in all wireless communications systems allowing additionally Path Loss and E-field strength analysis.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130540462","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
Network Traffic Prediction Using Online-Sequential Extreme Learning Machine 基于在线序列极限学习机的网络流量预测
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652247
Francisco Rau, I. Soto, P. Adasme, David Zabala-Blanco, César A. Azurdia-Meza
{"title":"Network Traffic Prediction Using Online-Sequential Extreme Learning Machine","authors":"Francisco Rau, I. Soto, P. Adasme, David Zabala-Blanco, César A. Azurdia-Meza","doi":"10.1109/SACVLC53127.2021.9652247","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652247","url":null,"abstract":"For years, it has been a great challenge for Internet Service Providers (ISP) to predict traffic load or future demand, since each bit of traffic is an economic cost to operators. Additionally, more and more users are adopting the different telecommunication services as well as the ISP must provide more bandwidth and reliability. In this sense, the study focuses on forecasting with neural network techniques, specifically Long Short-Term Memory (LSTM) and Online-Sequential Extreme Learning Machine (OS-ELM), the real traffic of a Chile ISP. The results show that OS-ELM outperforms LSTM in terms of computational cost by a factor of 2300, and in terms of network prediction, OS-ELM effectively competes with LSTM.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"7 16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126339663","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
Geolocation Techniques in LoRaWan Networks as a Fault Tolerance Approach in GPS-Based Tracking Devices LoRaWan网络中的地理定位技术作为基于gps的跟踪设备的容错方法
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652345
André F. Pastório, E. T. de Camargo
{"title":"Geolocation Techniques in LoRaWan Networks as a Fault Tolerance Approach in GPS-Based Tracking Devices","authors":"André F. Pastório, E. T. de Camargo","doi":"10.1109/SACVLC53127.2021.9652345","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652345","url":null,"abstract":"The wide adoption of the concept of Internet of Things (IoT) and smart cities involves increasing the reliability and availability of its applications when facing failures. Long-range, low-power networks are used in such applications to provide connectivity. In this context, object tracking is an important feature. Usually GPS is used for that purpose. However, a GPS failure may compromise the application. This work implements a hybrid geolocation strategy in LoRaWAN networks. The implementation is compared to a commercial tool. An environment with three commercial LoRaWAN gateways was set up to perform an evaluation. Results show errors of about 151 in the worst case, and 19 meters and best case.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133585262","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
Performance Evaluation of a LoS Visible Light Communication Link using an Optical Concentrator and a Plano-Convex Lens 利用光聚光器和平凸透镜的LoS可见光通信链路性能评价
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652389
David Esteban Farfan-Guillen, Paulo de Tarso Neves Junior, A. de Almeida Prado Pohl
{"title":"Performance Evaluation of a LoS Visible Light Communication Link using an Optical Concentrator and a Plano-Convex Lens","authors":"David Esteban Farfan-Guillen, Paulo de Tarso Neves Junior, A. de Almeida Prado Pohl","doi":"10.1109/SACVLC53127.2021.9652389","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652389","url":null,"abstract":"Visible light communication (VLC) has gained a lot of notoriety due to its ability to transmit data using light sources. However, some limitations arise when it is applied to practical environments, one of these is the relatively small active area of photodetectors (PD), which impacts the signal-to-noise ratio in the reception. Yet, the performance can be improved when an optical concentrator is placed on the transmitter side and a plano-convex lens on the receiver side. Experimental results obtained with an arrangement described in this work show a gain 9.23 times higher in the receiver when these elements are considered. And a gain of 3.07 times higher when only the optical concentrator is employed. The inclusion of such components led to a performance improvement in the link with transmission rates of up to 40 Mbps being measured using OOK NRZ modulation at a distance of 2 m.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130729837","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
Bit Error Rate Analysis for OFDM Schemes Applied to Underground Mining VLC Systems 矿井VLC系统中OFDM方案的误码率分析
2021 Third South American Colloquium on Visible Light Communications (SACVLC) Pub Date : 2021-11-11 DOI: 10.1109/SACVLC53127.2021.9652250
Pablo Palacios Játiva, César A. Azurdia-Meza, Milton Román Cañizares, Iván Sánchez, A. D. Firoozabadi
{"title":"Bit Error Rate Analysis for OFDM Schemes Applied to Underground Mining VLC Systems","authors":"Pablo Palacios Játiva, César A. Azurdia-Meza, Milton Román Cañizares, Iván Sánchez, A. D. Firoozabadi","doi":"10.1109/SACVLC53127.2021.9652250","DOIUrl":"https://doi.org/10.1109/SACVLC53127.2021.9652250","url":null,"abstract":"In this paper, three orthogonal frequency division multiplexing (OFDM) schemes are simulated and applied in the underground mining visible light communication (UM-VLC) system. The schemes are asymmetrically clipped optical OFDM (ACO-OFDM), direct current (DC) biased optical OFDM (DCO-OFDM), and asymmetrically clipped DC biased optical OFDM (ADO-OFDM). These techniques are evaluated and compared at different m-ary amplitude modulations (M-QAM) in the underground mining scenario based on the bit error rate (BER) metric. It is shown that, in terms of BER, the ACO-OFDM technique has a better performance compared to the other schemes presented, due to its simplicity and efficiency of the use of optical power.","PeriodicalId":235918,"journal":{"name":"2021 Third South American Colloquium on Visible Light Communications (SACVLC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132706760","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
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