2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)最新文献_第10页

Performance Analysis of RF/VLC Enabled UAV Base Station in Heterogeneous Network 异构网络中射频/VLC无人机基站性能分析

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/PIMRC50174.2021.9569408

Yash Gupta, Mansi Peer, V. Bohara

{"title":"Performance Analysis of RF/VLC Enabled UAV Base Station in Heterogeneous Network","authors":"Yash Gupta, Mansi Peer, V. Bohara","doi":"10.1109/PIMRC50174.2021.9569408","DOIUrl":"https://doi.org/10.1109/PIMRC50174.2021.9569408","url":null,"abstract":"In this paper, we study the trade-offs between two network configurations employed in a heterogeneous network setup wherein unmanned aerial vehicle (UAV) base stations (UBS) coexist with a macro base station (MBS). Specifically, two network configurations are investigated: (i) Heterogeneous network with MBS and UAV-Cellular base station (UAV-CBS) and (ii) Heterogeneous network with MBS and visible light communication (VLC) enabled UAV-Optical base station (UAV-OBS). A framework has been developed to compare the average spectral efficiency of the proposed network configurations. In the developed framework, the average spectral efficiency has been analyzed by taking into account the user’s association and user’s quality of service (QoS) requirement and location. To gain more concrete insights, we compare the above configurations for (i) one UBS and one MBS network, and (ii) two UBSs and one MBS network. We infer, from the simulation results, that as the number of UBSs in use increases, the network with VLC enabled UAV-OBS outperforms the cellular-enabled UAV-CBS.","PeriodicalId":283606,"journal":{"name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"339 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116448379","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: 2

Constrained K-means User Clustering and Downlink Beamforming in MIMO-SCMA systems MIMO-SCMA系统中的约束k均值用户聚类和下行波束形成

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/PIMRC50174.2021.9569415

Sara Norouzi, Yunlong Cai, B. Champagne

{"title":"Constrained K-means User Clustering and Downlink Beamforming in MIMO-SCMA systems","authors":"Sara Norouzi, Yunlong Cai, B. Champagne","doi":"10.1109/PIMRC50174.2021.9569415","DOIUrl":"https://doi.org/10.1109/PIMRC50174.2021.9569415","url":null,"abstract":"In this paper, we study the application of spatial user clustering along with downlink beamforming in multiple-input multiple-output sparse code multiple access (MIMO-SCMA) systems. A user clustering algorithm based on a constrained K-means method is proposed to limit the number of users in each cluster. Subsequently, a two-stage beamforming approach is developed in which a cluster beamformer and user-specific beamformer obtained from each stage are combined to form the final beamformer for each user. Specifically, in the first stage, the block diagonalization technique is employed to design cluster beamformers so that the inter-cluster interference is removed. In the second stage, an optimization problem is formulated to determine user-specific beamformers for all the users such that the total transmit power is minimized under signal-to-interference-plus-noise ratio (SINR) constraints. The performance of the proposed user clustering and downlink beamforming approaches in MIMO-SCMA systems is evaluated through simulations. The results provide useful insights into the advantages of the proposed scheme in terms of transmit power, and spectral efficiency over benchmark approaches.","PeriodicalId":283606,"journal":{"name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116697833","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: 3

Measurements and Modeling of the Mobile Wireless Channel at 2.4 GHz in Urban and Suburban Areas 城市和郊区2.4 GHz移动无线信道的测量和建模

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/PIMRC50174.2021.9569254

L. Gonsioroski, L. Mello, Amanda Beatriz dos Santos

引用次数: 0

A Study on the Prediction Method for Spatiotemporal Channel Parameters by Convolutional Neural Network using a Spherical Image 基于球面图像的卷积神经网络时空信道参数预测方法研究

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/PIMRC50174.2021.9569427

S. Ito, Takahiro Hayashi

{"title":"A Study on the Prediction Method for Spatiotemporal Channel Parameters by Convolutional Neural Network using a Spherical Image","authors":"S. Ito, Takahiro Hayashi","doi":"10.1109/PIMRC50174.2021.9569427","DOIUrl":"https://doi.org/10.1109/PIMRC50174.2021.9569427","url":null,"abstract":"In order to realize a wireless emulator, a propagation model with high accuracy adapted for each specific environment is required. A stochastic propagation model is mainly used for the modelling of spatiotemporal propagation characteristics. However, a stochastic propagation model cannot predict accurately because no consideration is given to the surrounding environment. Therefore, a site-specific propagation model considering the surrounding environment is required to realize a wireless emulator. The prediction of multipaths is important for emulating of spatiotemporal parameters because spatiotemporal parameters are affected from multipaths. In particular, multipaths with one reflection or diffraction arriving via a wall or an edge of visible buildings from a transmitter or a receiver have a larger impact than other multipaths. Reflection and diffraction of these multipaths occurred on visible buildings from a transmitter or a receiver. In this paper, the site-specific propagation model for spatiotemporal parameters by a convolutional neural network (CNN) using a spherical image is proposed. The proposed model can predict spatiotemporal parameters because the spherical image just describes visible buildings from a transmitter and a receiver. It was clarified by evaluation that prediction by the proposed model can provide a correct description regarding both statistical characteristics in the evaluation area and specific characteristics at each point. We clarified the effectiveness of the proposed model by comparing it with the conventional model.","PeriodicalId":283606,"journal":{"name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134182401","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: 3

MmWave Fronthaul-to-Backhaul Interference in 5G NR Networks 5G NR网络中的毫米波前回程干扰

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/PIMRC50174.2021.9569660

Edgar Jirousek, Zeyu Huang, Stefan Pratschner, R. Langwieser, Stefan Schwarz, M. Rupp

{"title":"MmWave Fronthaul-to-Backhaul Interference in 5G NR Networks","authors":"Edgar Jirousek, Zeyu Huang, Stefan Pratschner, R. Langwieser, Stefan Schwarz, M. Rupp","doi":"10.1109/PIMRC50174.2021.9569660","DOIUrl":"https://doi.org/10.1109/PIMRC50174.2021.9569660","url":null,"abstract":"Fixed point-to-point microwave links (P-P links) are widely used for vital backhaul connections in cellular networks. One frequency range allocated to P-P links by the International Telecommunications Union ranges from 24.25GHz to 29.5GHz. The same frequency range was also allocated to mobile services, with bands dedicated to 5G new radio (NR). Potential outages or performance drops in P-P links due to interference from 5G NR are therefore a concern to mobile network operators. We characterize the link-level performance of a commercial off-the-shelf (COTS) P-P link experimentally through measurements. We install a COTS P-P link on our campus. Through an additional experimental transmitter, we generate a 5G NR interference signal, allowing us to measure the link performance depending on signal-to-interference ratio (SIR) in the field. We measure the data rate that the P-P link achieves with respect to the interferer’s location and transmit power. We establish a relation between the P-P link’s SIR and data rate based on our measurements. We further measure the P-P link’s antenna pattern in an anechoic chamber. To investigate the impact of interfering 5G NR user equipments (UEs) in typical cellular network deployment, we perform system-level simulations based on our link-level measurements. We simulate the impact of 5G NR users on a P-P links backhaul connection in typical cell geometries. We identify the cell’s key parameter that determines the P-P link’s achievable data rate.","PeriodicalId":283606,"journal":{"name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"2012 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130536524","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

Deep Learning for Ultra-Wideband Indoor Positioning 基于深度学习的超宽带室内定位

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/PIMRC50174.2021.9569615

Yiting Lu, J. Sheu, Y. Kuo

引用次数: 6

THz Channel Model for 6G Communications 6G通信的太赫兹信道模型

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/pimrc50174.2021.9569257

Z. Hossain, Qian Li, Dawei Ying, Geng Wu, Cong Xiong

引用次数: 2

On the Reliability of Spread FBMC Wireless Sensor Networks for Off-Tone Jamming 扩频FBMC无线传感器网络在离音干扰下的可靠性研究

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/PIMRC50174.2021.9569459

Hamad Fadhel Aldoseri, L. Häring, A. Czylwik

引用次数: 0

Optimization of the IEEE 802.15.4 Superframe for Clustered WSNs using Differential Evolution 基于差分进化的IEEE 802.15.4超帧聚类WSNs优化

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/PIMRC50174.2021.9569734

H. Amirinia, R. Liscano

{"title":"Optimization of the IEEE 802.15.4 Superframe for Clustered WSNs using Differential Evolution","authors":"H. Amirinia, R. Liscano","doi":"10.1109/PIMRC50174.2021.9569734","DOIUrl":"https://doi.org/10.1109/PIMRC50174.2021.9569734","url":null,"abstract":"Prolonging sensor and network life is a significant concern for wireless sensor networks and in this paper we present a novel optimization technique for determining the superframe slot allocation for a beacon-enabled 802.15.4 superframe operating with sensors with different data acquisition periods. The optimization approach is based on a differential evolution algorithm that leverages a flat cluster network topology to constrain the contention free period (CFP) and the contention access period (CAP) of the superframe. In this work we also define a multi-superframe structure to help conserve energy in the network. A sensitivity analysis of the optimization shows that the optimized results are not too sensitive to the clustering algorithm but are very sensitive to the original network configuration, such as number of nodes and their locations and transmission range, and therefore is better suited for static sensor networks. We also demonstrate that the optimized superframe results in a 5% gain in energy conservation over other approaches that optimize the superframe based on the ratio of the beacon order (BO) to superframe order (SO).","PeriodicalId":283606,"journal":{"name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127404070","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

Space Time Block Coding and Structured Multiplexing for Quadrature Spatial Modulation 正交空间调制的时空分组编码和结构化多路复用

2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Pub Date : 2021-09-13 DOI: 10.1109/PIMRC50174.2021.9569372

K. S. Shafrin, K. S. Sanila, Neelakandan Rajamohan

{"title":"Space Time Block Coding and Structured Multiplexing for Quadrature Spatial Modulation","authors":"K. S. Shafrin, K. S. Sanila, Neelakandan Rajamohan","doi":"10.1109/PIMRC50174.2021.9569372","DOIUrl":"https://doi.org/10.1109/PIMRC50174.2021.9569372","url":null,"abstract":"Massive multiple-input multiple-output (mMIMO) technology is emerging as a pragmatic approach to guarantee tremendous data traffic for future wireless communication systems. In this paper, a transmission scheme described as a space-time block coded structured quadrature spatial modulation (STBC-SQSM) for the mMIMO system is proposed. The STBC-SQSM scheme guarantees the diversity benefits of the STBC system. Moreover, the SQSM symbols take over the conventional STBC constellation points to convey additional information bits by antenna indices rather than individually by STBC blocks. Besides, it requires only a limited number of radio frequency (RF) chains despite the enormous data rate achieved by employing spatial multiplexing of multiple QSM symbols. Further, the proposed system proposes a structured Bayesian compressive sensing (S-BCS) and a structured multipath orthogonal matching pursuit (S-mOMP) based detectors with significantly reduced computational complexity. The simulation results confirm that the proposed scheme renders a more beneficial bit error rate (BER) performance and spectral gain than the existing systems.","PeriodicalId":283606,"journal":{"name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129775367","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