Pub Date : 2019-10-01DOI: 10.1109/ATC.2019.8924517
S. Chu, M. N. Hasan, A. B. Ahmed, Nguyen Canh Minh, C. C. Chu
A dual band rectangular dielectric resonator antenna is presented. The dielectric resonator is excited electrically by a quadrature-fed loop antenna having a capacitive gap to control its input impedance matching. The electromagnetic energy couples from the loop antenna to the rectangular dielectric placed on top of it. A phase inverter is inserted in one of the loop antenna arms that contributes to dual resonance behaviour of the dielectric resonator by introducing an approximate phase shift of 90 degree in operating bands. The proposed antenna operates at 3.34 GHz and 4.76 GHz. The antenna exhibits broadside radiation, with maximum radiation occurring at the top, with directivity of 7.37 dBi and 7.13 dBi in operating bands, respectively. The proposed antenna is suitable for using in wireless communication systems.
{"title":"Dual Band Quadrature-fed Printed Loop Antenna Loaded With Rectangular Dielectric Resonator","authors":"S. Chu, M. N. Hasan, A. B. Ahmed, Nguyen Canh Minh, C. C. Chu","doi":"10.1109/ATC.2019.8924517","DOIUrl":"https://doi.org/10.1109/ATC.2019.8924517","url":null,"abstract":"A dual band rectangular dielectric resonator antenna is presented. The dielectric resonator is excited electrically by a quadrature-fed loop antenna having a capacitive gap to control its input impedance matching. The electromagnetic energy couples from the loop antenna to the rectangular dielectric placed on top of it. A phase inverter is inserted in one of the loop antenna arms that contributes to dual resonance behaviour of the dielectric resonator by introducing an approximate phase shift of 90 degree in operating bands. The proposed antenna operates at 3.34 GHz and 4.76 GHz. The antenna exhibits broadside radiation, with maximum radiation occurring at the top, with directivity of 7.37 dBi and 7.13 dBi in operating bands, respectively. The proposed antenna is suitable for using in wireless communication systems.","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125797204","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 : 2019-10-01DOI: 10.1109/ATC.2019.8924496
Ngoc Pham-Thi-Dan, Thiem Do-Dac, Khuong Ho‐Van, Son Vo-Que, Son Pham-Ngoc
In this paper, secrecy outage probability (SOP) of cooperative communications in ESCRNs is numerically evaluated by the recommended precise closed-form formula which is corroborated by numerous computer simulations. Results expose that the relay's location, energy scavenging time, message recovering time, and power division for energy scavenging and message recovering dramatically impact the SOP of the cooperative communications in ESCRNs. Moreover, results infer that the SOP is constant either in energy scavenging non-cognitive networks (ES-nonCRNs) or in ESCRNs with infinite power transmitters.
{"title":"On Security Capability of Cooperative Communications in Energy Scavenging Cognitive Radio Networks","authors":"Ngoc Pham-Thi-Dan, Thiem Do-Dac, Khuong Ho‐Van, Son Vo-Que, Son Pham-Ngoc","doi":"10.1109/ATC.2019.8924496","DOIUrl":"https://doi.org/10.1109/ATC.2019.8924496","url":null,"abstract":"In this paper, secrecy outage probability (SOP) of cooperative communications in ESCRNs is numerically evaluated by the recommended precise closed-form formula which is corroborated by numerous computer simulations. Results expose that the relay's location, energy scavenging time, message recovering time, and power division for energy scavenging and message recovering dramatically impact the SOP of the cooperative communications in ESCRNs. Moreover, results infer that the SOP is constant either in energy scavenging non-cognitive networks (ES-nonCRNs) or in ESCRNs with infinite power transmitters.","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122664293","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 : 2019-10-01DOI: 10.1109/ATC.2019.8924539
Genta Muto, T. Kojima
In helicopter satellite communications, where rotor blades periodically block the transmission channel, Walsh-Hadamard code division multiplexing (WHCDM) is attractive because of its implicit time diversity effect overcoming the periodic blockage. However, inter-code interference (ICI) due to various factors decreases the implicit time diversity effect. This paper addresses reducing of ICI caused by the periodic blockage in WHCDM. As ICI reduction methods, the explicit time diversity with maximal ratio combining (MRC), zero-forcing (ZF), and minimum mean square error (MMSE) are investigated. The computer simulation shows that the three methods are effective for reducing the ICI. We also confirm that MMSE is superior to MRC and ZF in terms of BER performance.
{"title":"Inter-Code Interference Reduction in Walsh-Hadamard Code Division Multiplexing for Helicopter Satellite Communications","authors":"Genta Muto, T. Kojima","doi":"10.1109/ATC.2019.8924539","DOIUrl":"https://doi.org/10.1109/ATC.2019.8924539","url":null,"abstract":"In helicopter satellite communications, where rotor blades periodically block the transmission channel, Walsh-Hadamard code division multiplexing (WHCDM) is attractive because of its implicit time diversity effect overcoming the periodic blockage. However, inter-code interference (ICI) due to various factors decreases the implicit time diversity effect. This paper addresses reducing of ICI caused by the periodic blockage in WHCDM. As ICI reduction methods, the explicit time diversity with maximal ratio combining (MRC), zero-forcing (ZF), and minimum mean square error (MMSE) are investigated. The computer simulation shows that the three methods are effective for reducing the ICI. We also confirm that MMSE is superior to MRC and ZF in terms of BER performance.","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128607988","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 : 2019-10-01DOI: 10.1109/ATC.2019.8924492
Sawiya Kiatpapan, Takuro Yamaguchi, M. Ikehara
Image upscaling to obtain high quality digital image is one of the active research topics as it is applicable in the consumer electronics industries. Traditional image upscaling techniques have low computational complexity and applicable for real-time processing, but reconstructed image often contains artifacts and undesirable visual effect. The relationship between image interpolation and super-resolution leads our assumption that the interpolated image can be further optimized and may be considered as a part of super-resolution algorithm. In this paper, we propose a new image super-resolution method to combine fast image interpolation with iterative back-projection. This method does not require any external pre-trained datasets and has low computation time while the quality of the reconstructed image can be measured up to the high programming complexity methods such as the dictionary and deep convolutional neural networks.
{"title":"Super-Resolution Based on Back-Projection of Interpolated Image","authors":"Sawiya Kiatpapan, Takuro Yamaguchi, M. Ikehara","doi":"10.1109/ATC.2019.8924492","DOIUrl":"https://doi.org/10.1109/ATC.2019.8924492","url":null,"abstract":"Image upscaling to obtain high quality digital image is one of the active research topics as it is applicable in the consumer electronics industries. Traditional image upscaling techniques have low computational complexity and applicable for real-time processing, but reconstructed image often contains artifacts and undesirable visual effect. The relationship between image interpolation and super-resolution leads our assumption that the interpolated image can be further optimized and may be considered as a part of super-resolution algorithm. In this paper, we propose a new image super-resolution method to combine fast image interpolation with iterative back-projection. This method does not require any external pre-trained datasets and has low computation time while the quality of the reconstructed image can be measured up to the high programming complexity methods such as the dictionary and deep convolutional neural networks.","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123725857","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 : 2019-10-01DOI: 10.1109/ATC.2019.8924537
Hung Phan van, Dinh Nguyen Quoc, N. Viet Duc, Yoshihide Yamada, N. Michishita, M. Islam
By changing the refractive index of a lens antenna from positive value to negative value, lens shapes are changed from the convex to the concave. A thick convex lens is replaced by a thin concave lens. In order to examine electromagnetic performances, electromagnetic simulations are effective. However, electromagnetic simulators useful for negative refractive index lens antennas are limited. In this paper, HFSS simulator is utilized. Amplitude distributions of electric fields in the near field region are obtained. Physical performances of the negative refractive index lens are clarified.
{"title":"Electromagnetic Simulation Method of a Negative Refractive Index Lens Antenna","authors":"Hung Phan van, Dinh Nguyen Quoc, N. Viet Duc, Yoshihide Yamada, N. Michishita, M. Islam","doi":"10.1109/ATC.2019.8924537","DOIUrl":"https://doi.org/10.1109/ATC.2019.8924537","url":null,"abstract":"By changing the refractive index of a lens antenna from positive value to negative value, lens shapes are changed from the convex to the concave. A thick convex lens is replaced by a thin concave lens. In order to examine electromagnetic performances, electromagnetic simulations are effective. However, electromagnetic simulators useful for negative refractive index lens antennas are limited. In this paper, HFSS simulator is utilized. Amplitude distributions of electric fields in the near field region are obtained. Physical performances of the negative refractive index lens are clarified.","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114313004","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 : 2019-10-01DOI: 10.1109/ATC.2019.8924535
Mitsuki Takahashi, Kazushi Shimada, K. Maruta, C. Ahn
This paper proposes a joint channel ranking and successive interference cancellation (SIC) scheme for Interleave Division Multiple Access (IDMA) based Orthogonal Frequency Division Multiplexing (OFDM) on Visible Light Communication (VLC). With the spreading LEDs, VLC has been gaining attention as an effective communication means. Propagation medium of VLC is tremendously higher frequency electromagnetic waves than terahertz and hence VLC has superiority in terms of communication directivity and security. Under the use of VLC-OFDM, joint application of IDMA and spreading codes has been previously proposed for uplink multiple access scheme which can exhibit superior multiple user identification capability. However, it substantially requires large spreading factor as well as lower coding rate for error correction; achievable throughput performance was limited. In this paper, we introduce a channel ranking and variable spreading factor to improve the system throughput performance while maintaining BER degradation. Effectiveness of the proposed approach is clarified through computer simulation.
{"title":"Throughput Improvement Using Code Length Optimization for VLC-OFDM/IDMA","authors":"Mitsuki Takahashi, Kazushi Shimada, K. Maruta, C. Ahn","doi":"10.1109/ATC.2019.8924535","DOIUrl":"https://doi.org/10.1109/ATC.2019.8924535","url":null,"abstract":"This paper proposes a joint channel ranking and successive interference cancellation (SIC) scheme for Interleave Division Multiple Access (IDMA) based Orthogonal Frequency Division Multiplexing (OFDM) on Visible Light Communication (VLC). With the spreading LEDs, VLC has been gaining attention as an effective communication means. Propagation medium of VLC is tremendously higher frequency electromagnetic waves than terahertz and hence VLC has superiority in terms of communication directivity and security. Under the use of VLC-OFDM, joint application of IDMA and spreading codes has been previously proposed for uplink multiple access scheme which can exhibit superior multiple user identification capability. However, it substantially requires large spreading factor as well as lower coding rate for error correction; achievable throughput performance was limited. In this paper, we introduce a channel ranking and variable spreading factor to improve the system throughput performance while maintaining BER degradation. Effectiveness of the proposed approach is clarified through computer simulation.","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124904141","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 : 2019-10-01DOI: 10.1109/ATC.2019.8924499
Tran Thi Lan, Kohei Kawabata, H. Arai
Inverted-F antenna elements are proposed to design a platform-mounted antenna at HF band. Due to utilizing the inverted-F antenna elements to design the platform-mounted antennas, the complexity is significantly reduced because impedance matching capacitances are no need while the expected radiation pattern of the platform-mounted antenna are obtained. High efficiencies of the inverted-F antenna elements can be also achieved almost close to 100%. Moreover, the characteristic mode theory is used to analyze the radiation pattern of the platform-mounted antenna.
{"title":"Utilization of Inverted-F Antenna Elements to Design a Platform-Mounted HF Antenna","authors":"Tran Thi Lan, Kohei Kawabata, H. Arai","doi":"10.1109/ATC.2019.8924499","DOIUrl":"https://doi.org/10.1109/ATC.2019.8924499","url":null,"abstract":"Inverted-F antenna elements are proposed to design a platform-mounted antenna at HF band. Due to utilizing the inverted-F antenna elements to design the platform-mounted antennas, the complexity is significantly reduced because impedance matching capacitances are no need while the expected radiation pattern of the platform-mounted antenna are obtained. High efficiencies of the inverted-F antenna elements can be also achieved almost close to 100%. Moreover, the characteristic mode theory is used to analyze the radiation pattern of the platform-mounted antenna.","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127567273","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 : 2019-10-01DOI: 10.1109/ATC.2019.8924566
Van Loi Tran, V. B. Nguyen, V. Nguyen
Autopilot system consists of two main determining processes, namely the desired trajectory and the actual trajectory of the automobile. The desired trajectory of the automobile is determined by the Global Positioning System (GPS), laser scanner, radar sensor, position sensor, camera… The actual trajectory of the automobile is determined by the throttle by wire, brake by wire and steer by wire methods. This paper introduces a method to determine the actual trajectory of the automobile using the automatic steering system. The performance of the system is confirmed from simulation and experimental results.
{"title":"Determining Vehicle Trajectory based on Motion Model for Intelligent Autopilot Control","authors":"Van Loi Tran, V. B. Nguyen, V. Nguyen","doi":"10.1109/ATC.2019.8924566","DOIUrl":"https://doi.org/10.1109/ATC.2019.8924566","url":null,"abstract":"Autopilot system consists of two main determining processes, namely the desired trajectory and the actual trajectory of the automobile. The desired trajectory of the automobile is determined by the Global Positioning System (GPS), laser scanner, radar sensor, position sensor, camera… The actual trajectory of the automobile is determined by the throttle by wire, brake by wire and steer by wire methods. This paper introduces a method to determine the actual trajectory of the automobile using the automatic steering system. The performance of the system is confirmed from simulation and experimental results.","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114924787","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 : 2019-08-01DOI: 10.1109/atc.2019.8924536
On behalf of the Organizing Committee, we would like to extend our warm welcome to all of the presenters and participants to the 2019 International Conference on Advanced Technologies for Communications (ATC 2019) which is co-organized by the Radio and Electronics Association of Vietnam (REV) and the IEEE Communication Society (IEEE ComSoc), and hosted by the University of Transport and Communications (UTC) from October 17th to 19th, 2019 in Hanoi.
{"title":"Message from the ATC 2019 General Chairs","authors":"","doi":"10.1109/atc.2019.8924536","DOIUrl":"https://doi.org/10.1109/atc.2019.8924536","url":null,"abstract":"On behalf of the Organizing Committee, we would like to extend our warm welcome to all of the presenters and participants to the 2019 International Conference on Advanced Technologies for Communications (ATC 2019) which is co-organized by the Radio and Electronics Association of Vietnam (REV) and the IEEE Communication Society (IEEE ComSoc), and hosted by the University of Transport and Communications (UTC) from October 17th to 19th, 2019 in Hanoi.","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116132200","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 : 2019-05-01DOI: 10.1109/atc.2019.8924546
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{"title":"Papers by Title","authors":"","doi":"10.1109/atc.2019.8924546","DOIUrl":"https://doi.org/10.1109/atc.2019.8924546","url":null,"abstract":"Papers by Title","PeriodicalId":409591,"journal":{"name":"2019 International Conference on Advanced Technologies for Communications (ATC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129396465","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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