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2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)最新文献

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Perspective of the use of TV White Space in Brazil 巴西电视留白使用的视角
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/IMOC53012.2021.9624895
Olívia P. Diogo, Jessica A. Rocha, P. Castellanos, T. Ferreira
{"title":"Perspective of the use of TV White Space in Brazil","authors":"Olívia P. Diogo, Jessica A. Rocha, P. Castellanos, T. Ferreira","doi":"10.1109/IMOC53012.2021.9624895","DOIUrl":"https://doi.org/10.1109/IMOC53012.2021.9624895","url":null,"abstract":"The demand for new communications services increases the need for new bands in the radio spectrum. Currently, broadband services have allowed the majority of the population to continue their work and study activities in home office. Nevertheless, this is not the reality of regions further away from large urban centers. Through measurements in the Digital TV UHF band, a waste of bandwidth has been observed, that is, the so-called TV White Spaces, which could be used by new broadband access services. This article presents a study on the advancement of TV White Spaces use in the world and a preliminary assessment through a measurement campaign to validate the use of this approach.","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122574219","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
Beamforming Assessment for Antenna Arrays Installed onto a Small Unmanned Aerial Vehicle 小型无人机天线阵列波束形成评估
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/IMOC53012.2021.9624849
Leonardo C. dos Santos, E. Schlosser, M. Heckler, Liebert L. da Silva
{"title":"Beamforming Assessment for Antenna Arrays Installed onto a Small Unmanned Aerial Vehicle","authors":"Leonardo C. dos Santos, E. Schlosser, M. Heckler, Liebert L. da Silva","doi":"10.1109/IMOC53012.2021.9624849","DOIUrl":"https://doi.org/10.1109/IMOC53012.2021.9624849","url":null,"abstract":"This paper describes the assessment of beamforming capabilities of antenna arrays installed onto a small unmanned aerial vehicle predominantly composed of dielectric materials. Two antenna arrays are considered, whereby each array is composed of three quarter-wave monopoles. Initially, the electro-magnetic model is presented and simplifications in comparison to the actual aircraft are discussed. Installed performance is assessed by electromagnetic simulations of the arrays placed onto the aircraft. Finally, an assessment of beamforming capabilities is performed, whereby particle swarm optimization is used to estimate the beamforming coefficients for different antenna pattern scenarios.","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122654811","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
[IMOC 2021 Front cover] [IMOC 2021封面]
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/imoc53012.2021.9624887
{"title":"[IMOC 2021 Front cover]","authors":"","doi":"10.1109/imoc53012.2021.9624887","DOIUrl":"https://doi.org/10.1109/imoc53012.2021.9624887","url":null,"abstract":"","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129414859","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
Low-Complexity Method for Optical Fiber Nonlinear Coefficient Measurement 光纤非线性系数测量的低复杂度方法
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/IMOC53012.2021.9624878
L. Schanner, Carine Mineto, L. G. M. Riveros, F. Simões, T. Sutili, R. Figueiredo
{"title":"Low-Complexity Method for Optical Fiber Nonlinear Coefficient Measurement","authors":"L. Schanner, Carine Mineto, L. G. M. Riveros, F. Simões, T. Sutili, R. Figueiredo","doi":"10.1109/IMOC53012.2021.9624878","DOIUrl":"https://doi.org/10.1109/IMOC53012.2021.9624878","url":null,"abstract":"We propose a simple and fast method to measure the nonlinear coefficient (n2/Aeff) in optical fibers based on the analytical modelling of the impact of self-phase modulation (SPM) on a coherently-received sinusoidal-modulated optical carrier. The method was numerically validated and the characterization of different types of optical fibers resulted in errors below 1%.","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"39 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114110837","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
Erbium-Doped Fiber Amplifier Design with Multi-Objective Water Cycle Algorithm 基于多目标水循环算法的掺铒光纤放大器设计
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/IMOC53012.2021.9624913
Luis Gustavo Maciel Riveros, Carine Mineto, L. Schanner, José Hélio Da Cruz Júnior, F. Simões, T. Sutili, R. Figueiredo, E. Conforti
{"title":"Erbium-Doped Fiber Amplifier Design with Multi-Objective Water Cycle Algorithm","authors":"Luis Gustavo Maciel Riveros, Carine Mineto, L. Schanner, José Hélio Da Cruz Júnior, F. Simões, T. Sutili, R. Figueiredo, E. Conforti","doi":"10.1109/IMOC53012.2021.9624913","DOIUrl":"https://doi.org/10.1109/IMOC53012.2021.9624913","url":null,"abstract":"We propose a technique to design and optimize optical amplifiers based on EDFA optical amplifiers employing a multi-objective bio-inspired optimization algorithm. The results, presented in Pareto fronts, indicate the possibility to design gain-controlled amplifiers with wide operation range and small equalization penalty by adjusting only the pump power, being especially interesting for dynamic optical networks.","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126463893","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
Adaptive control for efficiency improvement in time-varying Visible Light Communication systems 时变可见光通信系统效率改进的自适应控制
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/IMOC53012.2021.9624898
D. K. Paixão, A. Chiuchiarelli
{"title":"Adaptive control for efficiency improvement in time-varying Visible Light Communication systems","authors":"D. K. Paixão, A. Chiuchiarelli","doi":"10.1109/IMOC53012.2021.9624898","DOIUrl":"https://doi.org/10.1109/IMOC53012.2021.9624898","url":null,"abstract":"In this work, we investigate and compare different techniques for dynamic adjustment of operational parameters in Visible Light Communication systems. Results show how the chosen set of control variables can drastically affect the system performance and efficiency, especially in the design of VLC systems for industrial applications.","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121851156","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 Soft Handover Framework Applied to VLC Systems 应用于VLC系统的软切换框架性能评估
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/IMOC53012.2021.9624931
Higor Camporez, Wesley S. Costa, Jair A. L. Silva, H. Rocha, M. Segatto
{"title":"Performance Evaluation of a Soft Handover Framework Applied to VLC Systems","authors":"Higor Camporez, Wesley S. Costa, Jair A. L. Silva, H. Rocha, M. Segatto","doi":"10.1109/IMOC53012.2021.9624931","DOIUrl":"https://doi.org/10.1109/IMOC53012.2021.9624931","url":null,"abstract":"The performance of a soft handover framework applied to a line of sight visible light communication system is evaluated in this paper. Based on a frequency division multiplexing technique, the evaluated scheme ensures that users do not lose their connection while they are moving in indoor environments. Each access point (AP) uses a particular channel band to transmit orthogonal frequency division multiplexing signals to a user. The simulation results, obtained in a scenario with two APs and one user, confirmed the connection maintenance in all tested links.","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132057031","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
OSNR Ripple and Tilt: Comparison Between PSO and MOO ACOP Techniques for EDFAs Links OSNR纹波和倾斜:EDFAs链路PSO和MOO ACOP技术的比较
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/IMOC53012.2021.9624820
Felipe C. N. O. Lima, C. Bastos-Filho, E. Barboza, J. Martins-Filho
{"title":"OSNR Ripple and Tilt: Comparison Between PSO and MOO ACOP Techniques for EDFAs Links","authors":"Felipe C. N. O. Lima, C. Bastos-Filho, E. Barboza, J. Martins-Filho","doi":"10.1109/IMOC53012.2021.9624820","DOIUrl":"https://doi.org/10.1109/IMOC53012.2021.9624820","url":null,"abstract":"Some important metrics to measure the transmission quality of the signal in optical links are OSNR Ripple and Tilt. They have a relevant impact on the transmission quality of an optical signal in links with a cascade of amplifiers. This paper compares the OSNR Ripple and Tilt between the MOO and PSO adaptive control of operating point (ACOP) approaches in links with a cascade of amplifiers. The results show that both techniques have a similar performance for up to 7 amplifiers with mean values below 0.5 dB and 0.85 dB for OSNR Ripple and Tilt, respectively. In scenarios with eight amplifiers, the PSO performed worse, with mean OSNR Ripple and Tilt values exceeding 2 dB in the same scenarios.","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114508655","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
Digital Pre-Distortion Employing Complex FIR Filters From Receiver Side Two Stage Dynamic Equalizer for Coherent Optical Systems 基于接收端两级动态均衡器的复杂FIR滤波器的相干光学系统数字预失真
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/IMOC53012.2021.9624890
Eduardo de Souza Rosa, José Hélio da Cruz, T. Sutili
{"title":"Digital Pre-Distortion Employing Complex FIR Filters From Receiver Side Two Stage Dynamic Equalizer for Coherent Optical Systems","authors":"Eduardo de Souza Rosa, José Hélio da Cruz, T. Sutili","doi":"10.1109/IMOC53012.2021.9624890","DOIUrl":"https://doi.org/10.1109/IMOC53012.2021.9624890","url":null,"abstract":"We presented a double-stage time domain digital pre-distortion method to mitigated the degradation imposed by narrow band filtering from analog front-end for high symbol rate coherent optical communication systems. The proposed technique is based on complex finite impulse response (FIR) filters estimated from the two stage dynamic equalizer on the reception digital signal processing stack. We conducted a series of system simulations to optimize pre-distortion setup and to evaluate its performance in increasing maximum achievable symbol rates for 16QAM and 64QAM. The results indicated gains up to 3 GBd and, consequently, 32 Gb/s and 48 Gb/s, compared with the case without digital pre-distortion, for 16QAM and 64QAM, respectively.","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123646940","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
Electromagnetic Analysis of Microstrip Hybrid Circuits Using Thin-Wire EFIE Formulation
2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC) Pub Date : 2021-10-24 DOI: 10.1109/IMOC53012.2021.9624763
Í. V. Soares, Úrsula do Carmo Resende, Felipe Machado de Freitas
{"title":"Electromagnetic Analysis of Microstrip Hybrid Circuits Using Thin-Wire EFIE Formulation","authors":"Í. V. Soares, Úrsula do Carmo Resende, Felipe Machado de Freitas","doi":"10.1109/IMOC53012.2021.9624763","DOIUrl":"https://doi.org/10.1109/IMOC53012.2021.9624763","url":null,"abstract":"This work presents a computationally efficient approach for the numerical analysis of the integro-differential formulation that models electromagnetic radiation by thin microstrip structures, including the contribution of lumped elements. This proposal is based on the thin-wire approximation to reduce a surface current distribution to a filamentary electric current thus, reducing a tridimensional problem to a unidimensional formulation. In addition, the effects of the dielectric are taken into account by considering the effective electric permittivity and the multipole Debye model that does this correction over the analyzed frequency band. Finally, the results obtained with this proposed technique are compared with measurements and simulation in commercial software, and an error lower than 1.5% was verified for all the analyzed cases with a processing time approximately eight times lower when compared with a full-wave simulation.","PeriodicalId":124570,"journal":{"name":"2021 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125934264","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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