Pub Date : 2020-10-08DOI: 10.1109/ATC50776.2020.9255455
Kieu Trang Pham-Thi, Son Xuat Ta, Truong Le-Huu, Khac Kiem Nguyen, Chien Dao-Ngoc
In this paper, metasurface-based patch antennas are arrayed in a sequentially-rotated layout for a high gain and broadband circularly polarized (CP) radiation. The single element is a rectangular patch, which is incorporated with a metasurface composed of 4×4 rectangular loops with diagonal strip in order to convert linearly-polarized wave from the patch into a CP wave. The array is fed by a sequential phase network based on series-parallel strips. The ANSYS Electronic Desktop is used for the simulations through this work. The final design has been realized and tested. The prototype yields a measured |S11| < −10 dB at 8.6 – 10.5 GHz, which agreed rather closely with the simulated value of 8.45 – 10.5 GHz. Moreover, the antenna achieves a broadband right-hand CP radiation; i.e., it yields a 3-dB axial ratio bandwidth of 15.38% (8.88 – 10.36 GHz), the peak broadside gain of 11.8 dBic, and a radiation efficiency of > 80%.
{"title":"A Sequentially Rotated Array of Polarization-Conversion Patch Antenna Using Metasurface","authors":"Kieu Trang Pham-Thi, Son Xuat Ta, Truong Le-Huu, Khac Kiem Nguyen, Chien Dao-Ngoc","doi":"10.1109/ATC50776.2020.9255455","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255455","url":null,"abstract":"In this paper, metasurface-based patch antennas are arrayed in a sequentially-rotated layout for a high gain and broadband circularly polarized (CP) radiation. The single element is a rectangular patch, which is incorporated with a metasurface composed of 4×4 rectangular loops with diagonal strip in order to convert linearly-polarized wave from the patch into a CP wave. The array is fed by a sequential phase network based on series-parallel strips. The ANSYS Electronic Desktop is used for the simulations through this work. The final design has been realized and tested. The prototype yields a measured |S11| < −10 dB at 8.6 – 10.5 GHz, which agreed rather closely with the simulated value of 8.45 – 10.5 GHz. Moreover, the antenna achieves a broadband right-hand CP radiation; i.e., it yields a 3-dB axial ratio bandwidth of 15.38% (8.88 – 10.36 GHz), the peak broadside gain of 11.8 dBic, and a radiation efficiency of > 80%.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124584905","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}
Pub Date : 2020-10-08DOI: 10.1109/ATC50776.2020.9255462
HuuCuong Thieu, MinhNghia Pham
The accuracy of ground phase and volume only coherence estimation are decisive factors to the efficient of the estimated forest height using PolInSAR data. This article approaches a novel three steps method to enhance the ground phase as well as forest height estimation from PolInSAR data. The ground phase is extracted from two fist steps by using conditional optimization approach. In the last steps, the forest parameters are retrieved from the optimal loop by using two optimum coherence channel without any prior information. The accuracy of the suggested method was applied with PolInSAR simulated data, which is generated from PolSARprosim 5.2 software. Experimental results indicate that the proposed method has improved the accuracy of the estimated forest height compared to Tayebe method by more than 1.1m
{"title":"A Novel Three Steps Method for Forest Parameters Extraction Using PolInSAR Images","authors":"HuuCuong Thieu, MinhNghia Pham","doi":"10.1109/ATC50776.2020.9255462","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255462","url":null,"abstract":"The accuracy of ground phase and volume only coherence estimation are decisive factors to the efficient of the estimated forest height using PolInSAR data. This article approaches a novel three steps method to enhance the ground phase as well as forest height estimation from PolInSAR data. The ground phase is extracted from two fist steps by using conditional optimization approach. In the last steps, the forest parameters are retrieved from the optimal loop by using two optimum coherence channel without any prior information. The accuracy of the suggested method was applied with PolInSAR simulated data, which is generated from PolSARprosim 5.2 software. Experimental results indicate that the proposed method has improved the accuracy of the estimated forest height compared to Tayebe method by more than 1.1m","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123141041","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}
Pub Date : 2020-10-08DOI: 10.1109/ATC50776.2020.9255433
Nghi Vinh Khanh, Pham Quang Thai, Khuong Ho‐Van, P. Dat, Nguyen Tan Hung, Vu Dinh Thanh
Universal filtered multi-carrier (UFMC), which is a modification of orthogonal frequency-division multiplexing (OFDM), is one of the proposed modulation methods for next generation wireless communication systems. To the best of our knowledge, the UFMC modulation method has not been implemented on visible light communication (VLC) systems using organic light emitting diodes (OLED), which have been rigorously researched for next generation indoor and short-range wireless communications. In this paper, for the first time, we presented in details the implementation process and experimental demonstration of UFMC modulation techniques for a VLC system using a commercial OLED. In our initial experimental results, UFMC could be support an aggregated bit rate of 3.1738 Mbps in a OLED-based VLC system with 325 kHz bandwidth.
{"title":"OLED-Based Visible Light Communication System Using Universal Filtered Multi-Carrier","authors":"Nghi Vinh Khanh, Pham Quang Thai, Khuong Ho‐Van, P. Dat, Nguyen Tan Hung, Vu Dinh Thanh","doi":"10.1109/ATC50776.2020.9255433","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255433","url":null,"abstract":"Universal filtered multi-carrier (UFMC), which is a modification of orthogonal frequency-division multiplexing (OFDM), is one of the proposed modulation methods for next generation wireless communication systems. To the best of our knowledge, the UFMC modulation method has not been implemented on visible light communication (VLC) systems using organic light emitting diodes (OLED), which have been rigorously researched for next generation indoor and short-range wireless communications. In this paper, for the first time, we presented in details the implementation process and experimental demonstration of UFMC modulation techniques for a VLC system using a commercial OLED. In our initial experimental results, UFMC could be support an aggregated bit rate of 3.1738 Mbps in a OLED-based VLC system with 325 kHz bandwidth.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130236500","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}
Pub Date : 2020-10-08DOI: 10.1109/ATC50776.2020.9255450
K. N. Nguyen, H. Shirai
Kirchhoff approximation method has been utilized for analyzing the diffraction of a transverse electric planewave by a window aperture on a thick conducting wall. The scattering fields are formulated as successive radiations from equivalent magnetic current sources assumed by closing the window aperture. Waveguide modal description has been used to solve the window glass effect of the structure. Scattering fields have been calculated to show the effect of the window glass.
{"title":"TE Plane Wave Diffraction by Window Aperture on a Thick Conducting Wall","authors":"K. N. Nguyen, H. Shirai","doi":"10.1109/ATC50776.2020.9255450","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255450","url":null,"abstract":"Kirchhoff approximation method has been utilized for analyzing the diffraction of a transverse electric planewave by a window aperture on a thick conducting wall. The scattering fields are formulated as successive radiations from equivalent magnetic current sources assumed by closing the window aperture. Waveguide modal description has been used to solve the window glass effect of the structure. Scattering fields have been calculated to show the effect of the window glass.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128556298","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}
Pub Date : 2020-10-08DOI: 10.1109/ATC50776.2020.9255444
Nguyen Thanh Huong, Bui Do Hanh Ngan, Vuong Tan Phu
This paper presents a multi-layer microstrip antenna designed for RFID application. This antenna is implemented by a folded dipole antenna with a loop-based directing element to increase the gain for the whole antenna structure. The proposed antenna operates at 2.4 GHz ISM band and achieves high gain of 6.4 dBi which is suitable for far-field RFID reader. Detailed study of the proposed RFID reader antenna exhibits that the designed antenna structure provides both strong near E-field and H-field and good impedance matching properties. The antenna was fabricated and its performance was validated by simulated and measured results with respect to return loss and radiation pattern.
{"title":"High Gain Folded Loop-based Multilayer Antenna at 2.4 GHz Band for Far-Field RFID Reader","authors":"Nguyen Thanh Huong, Bui Do Hanh Ngan, Vuong Tan Phu","doi":"10.1109/ATC50776.2020.9255444","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255444","url":null,"abstract":"This paper presents a multi-layer microstrip antenna designed for RFID application. This antenna is implemented by a folded dipole antenna with a loop-based directing element to increase the gain for the whole antenna structure. The proposed antenna operates at 2.4 GHz ISM band and achieves high gain of 6.4 dBi which is suitable for far-field RFID reader. Detailed study of the proposed RFID reader antenna exhibits that the designed antenna structure provides both strong near E-field and H-field and good impedance matching properties. The antenna was fabricated and its performance was validated by simulated and measured results with respect to return loss and radiation pattern.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129235453","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}
Pub Date : 2020-10-08DOI: 10.1109/atc50776.2020.9255440
{"title":"ATC 2020 Index","authors":"","doi":"10.1109/atc50776.2020.9255440","DOIUrl":"https://doi.org/10.1109/atc50776.2020.9255440","url":null,"abstract":"","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127847335","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}
Pub Date : 2020-10-08DOI: 10.1109/atc50776.2020.9255362
{"title":"ATC 2020 Content Announcement Page","authors":"","doi":"10.1109/atc50776.2020.9255362","DOIUrl":"https://doi.org/10.1109/atc50776.2020.9255362","url":null,"abstract":"","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115915312","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}
Pub Date : 2020-10-08DOI: 10.1109/ATC50776.2020.9255365
B. Nguyen, Xuan Hung Le, X. Tran, Le The Dung
This paper investigates the ergodic capacity (EC) of full-duplex (FD) relay system with maximal ratio transmission (MRT) and maximal ratio combining (MRC) techniques under the effect of hardware impairments (HI). We mathematically derive the closed-form expression of EC of the HI-FD relay system under the joint impact of HI and residual self-interference (RSI) over Rayleigh fading environments. Based on the derived expression, we can quickly obtain the EC expressions of related systems such as ideal hardware (ID) FD relay systems, HI half-duplex (HD) relay system, and ID-HD relay system. The Monte-Carlo simulation validates all analytical expressions. Numerical results indicate a strong effect of both HI and RSI on the EC of the considered HI-FD relay system. Specifically, EC reaches the capacity floor in the high signal-to-noise ratio (SNR) regime. Also, the influence of HI is more substantial when the RSI is smaller and vice versa.
{"title":"On the Capacity of MRT/MRC Diversity Technique in Full-Duplex Relay System with Hardware Impairments over Rayleigh Fading Environments","authors":"B. Nguyen, Xuan Hung Le, X. Tran, Le The Dung","doi":"10.1109/ATC50776.2020.9255365","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255365","url":null,"abstract":"This paper investigates the ergodic capacity (EC) of full-duplex (FD) relay system with maximal ratio transmission (MRT) and maximal ratio combining (MRC) techniques under the effect of hardware impairments (HI). We mathematically derive the closed-form expression of EC of the HI-FD relay system under the joint impact of HI and residual self-interference (RSI) over Rayleigh fading environments. Based on the derived expression, we can quickly obtain the EC expressions of related systems such as ideal hardware (ID) FD relay systems, HI half-duplex (HD) relay system, and ID-HD relay system. The Monte-Carlo simulation validates all analytical expressions. Numerical results indicate a strong effect of both HI and RSI on the EC of the considered HI-FD relay system. Specifically, EC reaches the capacity floor in the high signal-to-noise ratio (SNR) regime. Also, the influence of HI is more substantial when the RSI is smaller and vice versa.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131156969","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}
Pub Date : 2020-10-08DOI: 10.1109/ATC50776.2020.9255479
P. H. Tran, A. Rakitzis, H. D. Nguyen, Q. Nguyen, H. Tran, K. Tran, C. Heuchenne
Among the anomaly detection methods, control charts have been considered important techniques. In practice, however, even under the normal behaviour of the data, the standard deviation of the sequence is not stable. In such cases, the coefficient of variation (CV) is a more appropriate measure for assessing system stability. In this paper, we consider the statistical design of Run Rules-based control charts for monitoring the CV of multivariate data. A Markov chain approach is used to evaluate the statistical performance of the proposed charts. The computational results show that the Run Rules-based charts outperform the standard Shewhart control chart significantly. Moreover, by choosing an appropriate scheme, the Run Rules-based charts perform better than the Run Sum control chart for monitoring the multivariate CV.
{"title":"New Methods for Anomaly Detection: Run Rules Multivariate Coefficient of Variation Control Charts","authors":"P. H. Tran, A. Rakitzis, H. D. Nguyen, Q. Nguyen, H. Tran, K. Tran, C. Heuchenne","doi":"10.1109/ATC50776.2020.9255479","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255479","url":null,"abstract":"Among the anomaly detection methods, control charts have been considered important techniques. In practice, however, even under the normal behaviour of the data, the standard deviation of the sequence is not stable. In such cases, the coefficient of variation (CV) is a more appropriate measure for assessing system stability. In this paper, we consider the statistical design of Run Rules-based control charts for monitoring the CV of multivariate data. A Markov chain approach is used to evaluate the statistical performance of the proposed charts. The computational results show that the Run Rules-based charts outperform the standard Shewhart control chart significantly. Moreover, by choosing an appropriate scheme, the Run Rules-based charts perform better than the Run Sum control chart for monitoring the multivariate CV.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"10 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124281667","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}
Pub Date : 2020-10-08DOI: 10.1109/ATC50776.2020.9255465
Tran Quang-Huy, Van Tu Duong, Nguyen Canh Minh, Nguyễn Thị Hoàng Yến, Tien-Anh Nguyen, Duc-Tan Tran
In this paper, we proposed an efficient iteration procedure, being used in the initial cluster Newton method (CNM) to seek multiple solutions for inverse parameter identification in pharmacokinetics simultaneously. Instead of the constant level of perturbation in the initial CNM, the reasonable level of perturbation is controlled corresponding to different iterations. The simulation results of the proposed scheme have pointed out that we can reduce iterations and computational time; the point cluster goes more stably towards the solution manifold.
{"title":"An Efficient Iteration Procedure for the Cluster Newton Method in Inverse Parameter Identification of Pharmacokinetics","authors":"Tran Quang-Huy, Van Tu Duong, Nguyen Canh Minh, Nguyễn Thị Hoàng Yến, Tien-Anh Nguyen, Duc-Tan Tran","doi":"10.1109/ATC50776.2020.9255465","DOIUrl":"https://doi.org/10.1109/ATC50776.2020.9255465","url":null,"abstract":"In this paper, we proposed an efficient iteration procedure, being used in the initial cluster Newton method (CNM) to seek multiple solutions for inverse parameter identification in pharmacokinetics simultaneously. Instead of the constant level of perturbation in the initial CNM, the reasonable level of perturbation is controlled corresponding to different iterations. The simulation results of the proposed scheme have pointed out that we can reduce iterations and computational time; the point cluster goes more stably towards the solution manifold.","PeriodicalId":218972,"journal":{"name":"2020 International Conference on Advanced Technologies for Communications (ATC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125042526","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}
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