Angela Cristina Eyng, O. Rayel, E. Oroski, J. L. Rebelatto
{"title":"Kalman Filtering-Aided Hybrid Indoor Positioning System With Fingerprinting And Multilateration","authors":"Angela Cristina Eyng, O. Rayel, E. Oroski, J. L. Rebelatto","doi":"10.1109/VTC2020-Spring48590.2020.9129422","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9129422","url":null,"abstract":"In this work we resort to the Bluetooth Low Energy (BLE) beaconing mechanism to propose an hybrid indoor positioning system (H-IPS) that fuses both multilateration (MLT) and fingerprinting (FP) RSSI-based approaches. The aim is to estimate the localization of an indoor target node, which is assumed to follow a uniform motion model. We adopt Kalman Filtering (KF) to diminish the MLT and FP errors while performing a track-to-track fusion (TTF) of the two KF outputs to further improve the performance. Our results indicate that the proposed H-IPS improves the estimation accuracy when individually compared to the standalone FP scheme in up to 46% in the considered scenarios, while the standalone MLT is outperformed in approximately 54%. Moreover, we also provide some insights on the influence of parameters such as the FP grid size, number of access points (APs) and number of samples on the accuracy of the proposed scheme. Finally, we show that the probability that the distance error of the proposed H-IPS is lower than 2 m is 92%, while for the FP and MLT the same probability is 43% and 47%, respectively.","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123074237","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}
{"title":"Systematic Beam Management in mmWave Network: Tradeoff Among User Mobility, Link Outage, and Interference Control","authors":"Honghao Ju, Yan Long, X. Fang, Rong He","doi":"10.1109/VTC2020-Spring48590.2020.9129387","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9129387","url":null,"abstract":"In this paper, we study the beam management in mmWave network from a systematic perspective. First, instead of optimizing the network performance regarding the sum-rate, we improve the beam coverage to better support user mobility, which can further reduce the beam tracking overhead. Second, to compensate for the severe signal attenuation in mmWave band, we conFigure the beam so as to satisfy the user link outage probability constraint. Third, to reduce the interference among users, we consider the inter-beam interference from both main-lobe and side-lobe. We formulate our beam management scheme as a non-linear integer optimization problem, which typically has high computational complexity. By deliberately transforming it to a geometric optimization problem and designing the rounding method, we give an optimized feasible solution with low computational complexity. We verify the performance of our beam management scheme through simulation. Extensive simulation results demonstrate that our proposed algorithm can efficiently manage the beam in mmWave network.","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114221760","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}
{"title":"EP-based Detection for Uplink OFDM-IDMA with Carrier Frequency Offsets","authors":"Yun Chen, Yue Xiao","doi":"10.1109/VTC2020-Spring48590.2020.9128720","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9128720","url":null,"abstract":"A novel detection algorithm is proposed for multiuser detection (MUD) in uplink orthogonal frequency division multiplexing-interleave division multiple access (OFDM-IDMA) systems employing the expectation propagation (EP) algorithm. Compared to the conventional elementary signal estimator (ESE) detector, the proposed detector is capable of reducing the complexity with a favorable performance imposed with the accurate estimate of the posterior distribution. Then, the proposed detector can also obtain a considerable bit error rate (BER) performance in high order modulation with high transmission rate. Finally, we design a new scheme suitable for OFDM-IDMA in the presence of multiple carrier frequency offsets (CFOs). Our simulation results illustrate that the proposed scheme can effectively mitigate the influence of multiple CFOs.","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"41 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120896655","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}
K. Maruta, S. Kojima, C. Ahn, D. Hisano, Yu Nakayama
{"title":"Blind SIR Estimation by Convolutional Neural Network Using Visualized IQ Constellation","authors":"K. Maruta, S. Kojima, C. Ahn, D. Hisano, Yu Nakayama","doi":"10.1109/VTC2020-Spring48590.2020.9128719","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9128719","url":null,"abstract":"This paper proposes the blind interference power estimation via deep learning approach exploiting the visualized wireless signal information. Blind adaptive array (BAA) signal processing is the powerful solution to suppress various kinds of interference such as inter-cell interference (ICI) and intersystem interference (ISysI) for which receivers cannot obtain a priori information represented as channel state information (CSI). However, BAAs cannot always suppress interference due to its blind nature. Depending on signal-to-interference power ration (SIR), adequate BAA algorithms should be switched. In order to estimate SIR in a blind manner, we propose to apply a convolutional neural network (CNN) trained by IQ constellation images where contains the desired and interference signals. This paper presents its methodology and fundamental possibility.","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115635542","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}
{"title":"Wireless Healthcare System for Life Detection and Vital Sign Monitoring","authors":"Lili Xie, Jun Tian, Hongchun Li, Qian Zhao","doi":"10.1109/VTC2020-Spring48590.2020.9128431","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9128431","url":null,"abstract":"Non-contact human sensing based on radar has attracted numerous attentions and been applied in various applications, such as localization, vital sign monitoring and activity identification. This paper presents a wireless healthcare system to achieve life detection and vital sign monitoring based on frequency-modulated continuous-wave (FMCW) radar. Most of previous methods have studied to detect moving targets. The proposed life detection method has achieved stationary human target detection by utilizing the inherent characteristics of human breathing motion: spatial correlation and periodicity. Based on the phase sensitivity of FMCW radar, breathing motion is monitored within the range provided by the life detection step. Besides, different algorithms are adopted for different detection range to remove the distance and environment impacts. Experiments are carried out and have demonstrated that the proposed method can detect the stationary human targets accurately and 95% of the breathing rate estimation error is less than 3 BPM(Beat Per Minute).","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121202850","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}
Yuanni Liu, Man Xiao, Y. Zhou, Di Zhang, Jianhui Zhang, H. Gačanin, Jianli Pan
{"title":"An Access Control Mechanism Based on Risk Prediction for the IoV","authors":"Yuanni Liu, Man Xiao, Y. Zhou, Di Zhang, Jianhui Zhang, H. Gačanin, Jianli Pan","doi":"10.1109/VTC2020-Spring48590.2020.9129056","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9129056","url":null,"abstract":"The information sharing among vehicles provides intelligent transport applications in the Internet of Vehicles (IoV), such as self-driving and traffic awareness. However, due to the openness of the wireless communication (e.g., DSRC), the integrity, confidentiality and availability of information resources are easy to be hacked by illegal access, which threatens the security of the related IoV applications. In this paper, we propose a novel Risk Prediction-Based Access Control model, named RPBAC, which assigns the access rights to a node by predicting the risk level. Considering the impact of limited training datasets on prediction accuracy, we first introduce the Generative Adversarial Network (GAN) in our risk prediction module. The GAN increases the items of training sets to train the Neural Network, which is used to predict the risk level of vehicles. In addition, focusing on the problem of pattern collapse and gradient disappearance in the traditional GAN, we develop a combined GAN based on Wasserstein distance, named WCGAN, to improve the convergence time of the training model. The simulation results show that the WCGAN has a faster convergence speed than the traditional GAN, and the datasets generated by WCGAN have a higher similarity with real datasets. Moreover, the Neural Network (NN) trained with the datasets generated by WCGAN and real datasets (NN-WCGAN) performs a faster speed of training, a higher prediction accuracy and a lower false negative rate than the Neural Network trained with the datasets generated by GAN and real datasets (NN-GAN), and the Neural Network trained with the real datasets (NN). Additionally, the RPBAC model can improve the accuracy of access control to a great extent.","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116628739","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}
{"title":"En-route Multilateration System Based on ADS-B and TDOA/AOA for Flight Surveillance Systems","authors":"Dongxu Zhao, Jinlong Sun, Guan Gui","doi":"10.1109/VTC2020-Spring48590.2020.9129436","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9129436","url":null,"abstract":"The traditional radar techniques are not suitable for the precise positioning of the aircraft with the rapid development of air traffic. Automatic dependent surveillance-broadcast (ADSB) is one of the most important technologies in the field of air traffic control. Unfortunately, the ADS-B technique is prone to cyber threats due to its open architecture. In order to validate the ADS-B signal and to enhance positioning accuracy of en-route aircraft, an approach unite the technology of ADS-B and multilateration (MLAT) is presented, where a dynamic flight model of aircraft is utilized. We use MLAT to overcome the problems caused by the drawbacks of ADS-B. Moreover, we propose a hybrid time-difference-of-arrival/angle-of-arrival (TDOA/AOA) positioning technology using Extened Kalman Filters (EKF) for ADS-B/MLAT positioning system. The experimental results show that the hybrid technology can improve the position accuracy and enhance the robustness of the surveillance systems.","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124860182","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}
{"title":"Visible Light Indoor Positioning Algorithm Base on the Fruit Fly Modified DV-hop Method","authors":"Yuexia Zhang, S. Yin, Jiacheng Jin","doi":"10.1109/VTC2020-Spring48590.2020.9129477","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9129477","url":null,"abstract":"In this study, we propose a visible light indoor positioning algorithm based on the fruit fly modified distance vector-hop (DV-hop) method. The algorithm uses the non-distance-based DV-hop protocol to locate the unknown node in the visible light system. It uses the fruit fly optimization-searching algorithm to select the best anchor node in the DV-hop visible light indoor positioning algorithm. The proposed algorithm can reduce hardware costs and avoid the ranging-based positioning algorithm error caused by the multipath effect and LED receiving angle. The proposed algorithm makes the average distance of each hop closer to the real distance between the anchor node and the unknown node and improves location accuracy. According to simulation results, the algorithm can reduce the location error of visible light indoor positioning, improve positioning accuracy, and be more effectively adapted to low-cost requirements and low energy consumption without increasing the hardware cost.","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124927363","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}
Yuewei He, Yongkun Zhao, Zi Wang, Wenjun Zhu, Lihang Feng
{"title":"Experimental assessment of wheel-terrain interaction model suitability and applicability","authors":"Yuewei He, Yongkun Zhao, Zi Wang, Wenjun Zhu, Lihang Feng","doi":"10.1109/VTC2020-Spring48590.2020.9129547","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9129547","url":null,"abstract":"Lots of models have been proposed to address wheel-terrain interaction (WTI) problem, however, there is no clear boundary among these models’ applicable range. In this paper, four classic models have been compared and evaluated. Convergence factor is chosen as the indicator to evaluate each models’ suitability and applicability, thus on different terrain we could select the most suitable WTI model, which are also discussed. The experimental results demonstrate that the evaluation methods could quantify the difference between the classical wheel model and practical data.","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121449959","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}
{"title":"Maximizing Connection Density in NB-IoT Networks with NOMA","authors":"Shashwat Mishra, Lou Salaün, Chung Shue Chen","doi":"10.1109/VTC2020-Spring48590.2020.9129542","DOIUrl":"https://doi.org/10.1109/VTC2020-Spring48590.2020.9129542","url":null,"abstract":"We address the issue of maximizing the number of connected devices in a Narrowband Internet of Things (NB-IoT) network using non-orthogonal multiple access (NOMA). The scheduling assignment is done on a per-transmit time interval (TTI) basis and focuses on efficient device clustering. We formulate the problem as a combinatorial optimization problem and solve it under interference, rate and sub-carrier availability constraints. We first present the bottom-up power filling algorithm (BU), which solves the problem given that each device can only be allocated contiguous sub-carriers. Then, we propose the item clustering heuristic (IC) which tackles the more general problem of non-contiguous allocation. The novelty of our optimization framework is two-fold. First, it allows any number of devices to be multiplexed per sub-carrier, which is based on the successive interference cancellation (SIC) capabilities of the network. Secondly, whereas most existing works only consider contiguous sub-carrier allocation, we also study the performance of allocating non-contiguous sub-carriers to each device. We show through extensive simulations that non-contiguous allocation through IC scheme can outperform BU and other existing contiguous allocation methods.","PeriodicalId":348099,"journal":{"name":"2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125282806","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}