Pub Date : 2019-07-01DOI: 10.1109/USNC-URSI.2019.8861913
Hae-Chang Jeong, G. Choi, D. Woo, Jae Sik Kim, Sosu Kim
A multiple scattering points generator for multi-target (MSPG-MT) is proposed to simulate multi-target engagement of a high-resolution radar (HRR) at an indoor testing. A multi-target signal generator provides to the MSPG-MT with multi-target signals generated by multiple direct-digital synthesizers (DDSs). The MSPG-MT provides to antennas with individual multiple scattering points of the multi-target generated by multiple divider blocks. The HRR receives the radiated signals from antennas and displays the multiple scattering points in the beat frequency domain. The validation of the proposed MSPG-MT was verified through a measurement using a Ku-band HRR and the MSPG-MT.
{"title":"Multiple Scattering Points Generator for Multi-Target","authors":"Hae-Chang Jeong, G. Choi, D. Woo, Jae Sik Kim, Sosu Kim","doi":"10.1109/USNC-URSI.2019.8861913","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2019.8861913","url":null,"abstract":"A multiple scattering points generator for multi-target (MSPG-MT) is proposed to simulate multi-target engagement of a high-resolution radar (HRR) at an indoor testing. A multi-target signal generator provides to the MSPG-MT with multi-target signals generated by multiple direct-digital synthesizers (DDSs). The MSPG-MT provides to antennas with individual multiple scattering points of the multi-target generated by multiple divider blocks. The HRR receives the radiated signals from antennas and displays the multiple scattering points in the beat frequency domain. The validation of the proposed MSPG-MT was verified through a measurement using a Ku-band HRR and the MSPG-MT.","PeriodicalId":383603,"journal":{"name":"2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125242504","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 : 2019-07-01DOI: 10.1109/USNC-URSI.2019.8861714
Fugui Qi, Jianqi Wang, A. Fathy
An accurate non-contact novel detection method for obstructive sleep apnea (OSA) has been developed and will be presented here. Typically, non-contact measurement is preferred for babies, brutally burnt patients, and patients with respiratory contagious diseases, etc. The developed method is based on wavelet information entropy concepts that would clearly classify apnea by the strong abnormality, complex structure and disorder of the patient’s respiratory signal. The accuracy of this method has been experimentally validated, and demonstrated over 93% accuracy using a bio-radar.
{"title":"Automatic and Accurate Non-contact Obstructive Sleep Apnea Detection using Wavelet Information Entropy Spectrum","authors":"Fugui Qi, Jianqi Wang, A. Fathy","doi":"10.1109/USNC-URSI.2019.8861714","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2019.8861714","url":null,"abstract":"An accurate non-contact novel detection method for obstructive sleep apnea (OSA) has been developed and will be presented here. Typically, non-contact measurement is preferred for babies, brutally burnt patients, and patients with respiratory contagious diseases, etc. The developed method is based on wavelet information entropy concepts that would clearly classify apnea by the strong abnormality, complex structure and disorder of the patient’s respiratory signal. The accuracy of this method has been experimentally validated, and demonstrated over 93% accuracy using a bio-radar.","PeriodicalId":383603,"journal":{"name":"2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131913702","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 : 2019-07-01DOI: 10.1109/USNC-URSI.2019.8861699
A. Morgenthaler, C. Rappaport
Predictive 3D mm-wave nearfield radar modeling requires challenging tradeoffs between computational size and accuracy. For raster-scanned focused spot antenna systems, both the focusing array antenna and the target region must be finely and fully sampled, but the intervening space is large, making the computational space huge. For focusing along the axis in target geometries with only material variation in range, it is possible to scale the transmitter/receiver array and its range to target by a factor of two or four. But for even small amounts of off-axis focusing, the scaling must be done with care to avoid specular reflected rays that might miss the scaled transceiver array. Simulations based on ray analysis, analytic arrays of dipoles, and Quasi-Axisymmetric Finite Difference Frequency Domain (QAFDFD) compare well with each other. Only QAFDFD, however, can model target edge effects in the presence of large ground planes.
{"title":"Modeling Focused CW Mm-Wave Scattering of a Penetrable Dielectric Slab Affixed to a Human Body","authors":"A. Morgenthaler, C. Rappaport","doi":"10.1109/USNC-URSI.2019.8861699","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2019.8861699","url":null,"abstract":"Predictive 3D mm-wave nearfield radar modeling requires challenging tradeoffs between computational size and accuracy. For raster-scanned focused spot antenna systems, both the focusing array antenna and the target region must be finely and fully sampled, but the intervening space is large, making the computational space huge. For focusing along the axis in target geometries with only material variation in range, it is possible to scale the transmitter/receiver array and its range to target by a factor of two or four. But for even small amounts of off-axis focusing, the scaling must be done with care to avoid specular reflected rays that might miss the scaled transceiver array. Simulations based on ray analysis, analytic arrays of dipoles, and Quasi-Axisymmetric Finite Difference Frequency Domain (QAFDFD) compare well with each other. Only QAFDFD, however, can model target edge effects in the presence of large ground planes.","PeriodicalId":383603,"journal":{"name":"2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125273243","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 : 2019-07-01DOI: 10.1109/USNC-URSI.2019.8861844
H. Wang, R. Abedi, S. Mudaliar
The radiative transfer equation (RTE) for an axisymmetric problem involving scattering, absorption and radiation is solved using the discontinuous Galerkin (DG) finite element method (FEM). Both space and angle directions are discretized by the DG method. The problem is formulated for nonzero phase function. The method is validated against exact solutions. A few benchmark problems are conducted. The performance of the method is also studied for the solution of problems with discontinuous solution.
{"title":"A Discontinuous Galerkin Method for the Solution of Two Dimensional Axisymmetric Radiative Transfer Problem","authors":"H. Wang, R. Abedi, S. Mudaliar","doi":"10.1109/USNC-URSI.2019.8861844","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2019.8861844","url":null,"abstract":"The radiative transfer equation (RTE) for an axisymmetric problem involving scattering, absorption and radiation is solved using the discontinuous Galerkin (DG) finite element method (FEM). Both space and angle directions are discretized by the DG method. The problem is formulated for nonzero phase function. The method is validated against exact solutions. A few benchmark problems are conducted. The performance of the method is also studied for the solution of problems with discontinuous solution.","PeriodicalId":383603,"journal":{"name":"2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115324646","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 : 2019-07-01DOI: 10.1109/USNC-URSI.2019.8861785
Fang Ye, Zitao Zhou, Hongbo Tian, Qian Sun, Yibing Li, T. Jiang
Wireless systems are vulnerable to various kinds of jamming attacks due to the development of complexity of electromagnetic environment. Intelligent anti-jamming decision for multi-domain, which is more flexible than traditional single-domain technique, has attracted much more attention. However, poor decision-making speed and robustness of decision-making algorithm lead to a non-optimal communication scheme in huge decision space. An anti-jamming decision method based on the mutation search artificial bee colony algorithm (MSABC) is proposed in this paper. Numerical investigations show that the proposed algorithm can find a better communication scheme that reduces the normalized transmitting power while maintaining the normalized rate.
{"title":"Intelligent Anti-Jamming Decision Method Based on the Mutation Search Artificial Bee Colony Algorithm for Wireless Systems","authors":"Fang Ye, Zitao Zhou, Hongbo Tian, Qian Sun, Yibing Li, T. Jiang","doi":"10.1109/USNC-URSI.2019.8861785","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2019.8861785","url":null,"abstract":"Wireless systems are vulnerable to various kinds of jamming attacks due to the development of complexity of electromagnetic environment. Intelligent anti-jamming decision for multi-domain, which is more flexible than traditional single-domain technique, has attracted much more attention. However, poor decision-making speed and robustness of decision-making algorithm lead to a non-optimal communication scheme in huge decision space. An anti-jamming decision method based on the mutation search artificial bee colony algorithm (MSABC) is proposed in this paper. Numerical investigations show that the proposed algorithm can find a better communication scheme that reduces the normalized transmitting power while maintaining the normalized rate.","PeriodicalId":383603,"journal":{"name":"2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125387150","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 : 2019-07-01DOI: 10.1109/USNC-URSI.2019.8861823
Guiyuan Zhang, Kang Zhang, Shengchang Lan, Yuan-Xun Liu, Lijia Chen
This paper presents a description of a real-time hand gesture recognition system. This system consists of three commercial modules perpendicular mounted in an three-dimensional array to provide six-channel baseband I/Q signals. The I/Q signals are pre-processed by the doppler signal amplitude threshold detection and spectral analysis. A convolutional neural network consisting in two convolutional layers and two fully connected layers is constructed as the recognition classifier with less dependence of feature extraction. The network is trained with 1000 groups of datasets and verified by testing recognized results as the customized shortcut keys. Results show that this system could achieve a high recognition accuracy rate higher than 95% in the real-time test.
{"title":"A Real-time Hand Gesture Recognition System using 24 GHz Radar Array","authors":"Guiyuan Zhang, Kang Zhang, Shengchang Lan, Yuan-Xun Liu, Lijia Chen","doi":"10.1109/USNC-URSI.2019.8861823","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2019.8861823","url":null,"abstract":"This paper presents a description of a real-time hand gesture recognition system. This system consists of three commercial modules perpendicular mounted in an three-dimensional array to provide six-channel baseband I/Q signals. The I/Q signals are pre-processed by the doppler signal amplitude threshold detection and spectral analysis. A convolutional neural network consisting in two convolutional layers and two fully connected layers is constructed as the recognition classifier with less dependence of feature extraction. The network is trained with 1000 groups of datasets and verified by testing recognized results as the customized shortcut keys. Results show that this system could achieve a high recognition accuracy rate higher than 95% in the real-time test.","PeriodicalId":383603,"journal":{"name":"2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"118 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126011461","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 : 2019-07-01DOI: 10.1109/USNC-URSI.2019.8861963
K. Dogbe, N. Hakem
In this paper, a multiple full-duplex relaying network using partial relay selection operating is investigated over mixed Rayleigh-Rician asymmetric fading environment. The first hop (source-relay) and the second hop (relay-destination) are subjected to Rayleigh and Rician fading respectively. Simulation results are provided for outage probability (OP) and bit error rate (BER) to enable building strong foundations for cooperative relaying communications design and optimization.
{"title":"Performance analysis of full-duplex relaying over Rayleigh-Rician fading channels","authors":"K. Dogbe, N. Hakem","doi":"10.1109/USNC-URSI.2019.8861963","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2019.8861963","url":null,"abstract":"In this paper, a multiple full-duplex relaying network using partial relay selection operating is investigated over mixed Rayleigh-Rician asymmetric fading environment. The first hop (source-relay) and the second hop (relay-destination) are subjected to Rayleigh and Rician fading respectively. Simulation results are provided for outage probability (OP) and bit error rate (BER) to enable building strong foundations for cooperative relaying communications design and optimization.","PeriodicalId":383603,"journal":{"name":"2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122199635","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 : 2019-07-01DOI: 10.1109/USNC-URSI.2019.8861709
K. Dogbe, N. Hakem
This paper investigates the outage probability and throughput of full-duplex (FD) relaying with the presence of imperfect channel state information (CSI). We consider an amplify-and-forward (AF) protocol cooperative communication system where a source node communicates with a destination node with the help of more relay nodes. In the relay selection (RS) scheme, only the best relay which maximizes the effective signal-to-interference-and-noise ratio (SINR) at the receiver end is selected. Simulation results show the impacts of channel estimation errors on full-duplex cooperative relay system and are useful in the evaluation of practical implementations.
{"title":"Analysis of full-duplex AF Relaying under Imperfect Channel State Information","authors":"K. Dogbe, N. Hakem","doi":"10.1109/USNC-URSI.2019.8861709","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2019.8861709","url":null,"abstract":"This paper investigates the outage probability and throughput of full-duplex (FD) relaying with the presence of imperfect channel state information (CSI). We consider an amplify-and-forward (AF) protocol cooperative communication system where a source node communicates with a destination node with the help of more relay nodes. In the relay selection (RS) scheme, only the best relay which maximizes the effective signal-to-interference-and-noise ratio (SINR) at the receiver end is selected. Simulation results show the impacts of channel estimation errors on full-duplex cooperative relay system and are useful in the evaluation of practical implementations.","PeriodicalId":383603,"journal":{"name":"2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114794831","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 : 2019-07-01DOI: 10.1109/USNC-URSI.2019.8861849
D. G. Segba, N. Hakem
In this paper, we propose a new method to estimate more directions of arrival (DOA) while having fewer antennas in the array. Indeed, we decompose the original array into two subarrays. Next, we make a Hadamard product between both steering vectors of subarrays to get the Hadamard steering vector. The lasts elements of the Hadamard steering vector are vertically concatenate with original steering vector. After that we apply MUltiple SIgnal Classification (MUSIC) algorithm for estimation of DOA of source signals. We used MatLab software to make the simulations and we get very good results.
{"title":"A Novel Method for Estimation of More DOA with Less Antennas","authors":"D. G. Segba, N. Hakem","doi":"10.1109/USNC-URSI.2019.8861849","DOIUrl":"https://doi.org/10.1109/USNC-URSI.2019.8861849","url":null,"abstract":"In this paper, we propose a new method to estimate more directions of arrival (DOA) while having fewer antennas in the array. Indeed, we decompose the original array into two subarrays. Next, we make a Hadamard product between both steering vectors of subarrays to get the Hadamard steering vector. The lasts elements of the Hadamard steering vector are vertically concatenate with original steering vector. After that we apply MUltiple SIgnal Classification (MUSIC) algorithm for estimation of DOA of source signals. We used MatLab software to make the simulations and we get very good results.","PeriodicalId":383603,"journal":{"name":"2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126025916","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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