2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC)最新文献_第3页

Joint Power, Frequency and Precoding Optimisation in a Satellite SDMA Communication System 卫星SDMA通信系统的联合功率、频率和预编码优化

2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2020-10-20 DOI: 10.1109/ASMS/SPSC48805.2020.9268786

Florian Vidal, H. Legay, G. Goussetis

引用次数: 3

Evaluation of Large Scale Propagation Phenomena on the Martian Surface: A 3D Ray Tracing Approach 火星表面大规模传播现象的评估:一种三维光线追踪方法

2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2020-10-20 DOI: 10.1109/ASMS/SPSC48805.2020.9268846

Stefano Bonafini, C. Sacchi

{"title":"Evaluation of Large Scale Propagation Phenomena on the Martian Surface: A 3D Ray Tracing Approach","authors":"Stefano Bonafini, C. Sacchi","doi":"10.1109/ASMS/SPSC48805.2020.9268846","DOIUrl":"https://doi.org/10.1109/ASMS/SPSC48805.2020.9268846","url":null,"abstract":"As the attention towards the exploration of the “Red Planet”, i.e. Mars, increases, the need of models representing the Martian conditions becomes fundamental in order to support future unmanned and manned missions, that will, hopefully, take a human crew to the Martian surface. For this reasons, it is necessary to understand, among other meaningful aspects, how an electromagnetic (EM) waves propagates over the Martian environment and build a model to properly simulate communication systems under realistic channel conditions through common commercial software. This contribution aims to evaluate large scale propagation phenomena on the Martian surface in order to determine a realistic Martian channel model. First, the surface morphology is obtained through the use of a high resolution Digital Elevation Model (DEM) representing the Gale crater. Then, the DEM is converted into a tile-based structure in which the tiles are the DEM's pixel, whose dimension is set according to the DEM's resolution. Each tile vertex is interpolated with the vertex of the nearest tile, thus constructing the walls of the 3D structure. The 3D structure is characterized, from an electromagnetic viewpoint, through the estimation of the complex permittivity. By exploiting a ray tracing approach and simulating an EM signal emitted by an isotropic antenna, the line of sight (LOS) power is computed over the 3D structure. From the received power in the selected Martian location, we estimate path loss samples for different distances between transmitter (TX) and receiver (RX). The samples are averaged for each distance and the path loss exponent, which represents the roughness of the terrain, is obtained by finding the path loss curve which better fits the averaged samples. Finally, the shadow standard deviation is evaluated and analyzed with respect to the considered Martian location.","PeriodicalId":218343,"journal":{"name":"2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124482307","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: 4

Grant-Free Access: Machine Learning for Detection of Short Packets 授权免费访问:短数据包检测的机器学习

2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2020-08-25 DOI: 10.1109/ASMS/SPSC48805.2020.9268917

Estefanía Recayte, A. Munari, Federico Clazzer

引用次数: 4

Traffic Simulator for Multibeam Satellite Communication Systems 多波束卫星通信系统通信量模拟器

2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2020-07-14 DOI: 10.1109/ASMS/SPSC48805.2020.9268831

H. Al-Hraishawi, E. Lagunas, S. Chatzinotas

{"title":"Traffic Simulator for Multibeam Satellite Communication Systems","authors":"H. Al-Hraishawi, E. Lagunas, S. Chatzinotas","doi":"10.1109/ASMS/SPSC48805.2020.9268831","DOIUrl":"https://doi.org/10.1109/ASMS/SPSC48805.2020.9268831","url":null,"abstract":"Assume that a multibeam satellite communication system is designed from scratch to serve a particular area with maximal resource utilization and to satisfactorily accommodate the expected traffic demand. The main design challenge here is setting optimal system parameters such as number of serving beams, beam directions and sizes, and transmit power. This paper aims at developing a tool, multibeam satellite traffic simulator, that helps addressing these fundamental challenges, and more importantly, provides an understanding to the spatial-temporal traffic pattern of satellite networks in large-scale environments. Specifically, traffic demand distribution is investigated by processing credible datasets included three major input categories of information: (i) population distribution for broadband Fixed Satellite Services (FSS), (ii) aeronautical satellite communications, and (iii) vessel distribution for maritime services. This traffic simulator combines this three-dimensional information in addition to time, locations of terminals, and traffic demand. Moreover, realistic satellite beam patterns have been considered in this work, and thus, an algorithm has been proposed to delimit the coverage boundaries of each satellite beam, and then compute the heterogeneous traffic demand at the footprint of each beam. Furthermore, another algorithm has been developed to capture the inherent attributes of satellite channels and the effects of multibeam interference. Data-driven modeling for satellite traffic is crucial nowadays to design innovative communication systems, e.g. precoding and beam hopping, and to devise efficient resource management algorithms.","PeriodicalId":218343,"journal":{"name":"2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127051723","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: 22

Direct Access to 5G New Radio User Equipment from NGSO Satellites in Millimeter Waves 通过毫米波直接接入NGSO卫星的5G新无线电用户设备

2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2020-03-24 DOI: 10.1109/ASMS/SPSC48805.2020.9268928

Pantelis-Daniel M. Arapoglou, S. Cioni, E. Re, A. Ginesi

引用次数: 7