International Journal of Satellite Communications and Networking最新文献

{"title":"Physical layer enhancements in 5G-NR for direct access via satellite systems","authors":"Stefano Cioni,&nbsp;Xingqin Lin,&nbsp;Baptiste Chamaillard,&nbsp;Mohamed El Jaafari,&nbsp;Gilles Charbit,&nbsp;Leszek Raschkowski","doi":"10.1002/sat.1461","DOIUrl":"10.1002/sat.1461","url":null,"abstract":"<div>\u0000 \u0000 <p>Among the several features and capabilities introduced by every new 3GPP release on 5G cellular systems, the latest Release 17 will be remembered as the first that specifies a set of enhancements and adaptations to support mobile broadband services via satellite direct access. Specifically focused on the necessary physical layer mechanism and procedure modifications, this paper will present in detail the 3GPP work about the inclusion of satellite systems in 5G networks.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"41 3","pages":"262-275"},"PeriodicalIF":1.7,"publicationDate":"2022-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48763771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Guest editorial IJSCN special issue on ASMS/SPSC 2020","authors":"Sandro Scalise,&nbsp;Alessandro Vanelli-Coralli,&nbsp;Alberto Ginesi,&nbsp;Domenico Mignolo","doi":"10.1002/sat.1462","DOIUrl":"10.1002/sat.1462","url":null,"abstract":"&lt;p&gt;This special issue of the &lt;i&gt;Wiley International Journal of Satellite Communications and Networking&lt;/i&gt; hosts a selection of papers from the 10th Advanced Satellite Multimedia Systems (ASMS) Conference and the 16th Signal Processing for Space Communications (SPSC) Workshop, held virtually on 20–21 October 2020. They were jointly organised by the DLR Institute for Communications and Navigation and JOANNEUM RESEARCH, with the scientific support of the European Space Agency, the University of Bologna and the Graz University of Technology under the auspices of ‘Das Land Steiermark’.&lt;/p&gt;&lt;p&gt;The ASMS conference and SPSC workshop have become recognised events for industry and research institutions to exchange up-to-date information about recent advances and emerging technologies in the field of satellite communication systems. The ESA's SPSC workshop dates back to 1988 when pioneering work in digital signal processing for satellite communications was first presented by worldwide authorities in the field. In addition, following the successful path opened by the 2006 edition of ASMS and continued with regular biannual editions, the scope of the conference has been further widened, as the small though important change in its name by replacing the word ‘mobile’ with ‘multimedia’ testifies. This is remarkable not only because the major part of the satcom market belongs to broadcasting and broadband access operators but fundamentally because the convergence of broadcast, mobile and fixed satellite communications is essential to offer seamless connectivity anywhere at anytime, which is recognised as the key element for the successful deployment of future satellite systems.&lt;/p&gt;&lt;p&gt;This issue collects the extended versions of four of the best papers presented at the 2020 ASMS/SPSC joint event. The papers have been selected with the aim of providing an insight in the developments and findings in this exciting field.&lt;/p&gt;&lt;p&gt;In the first paper ‘QUIC: Opportunities and Threats in SATCOM’, the authors investigate the feasibility of deploying the recently standardised QUIC protocol over satellite networks by analysis in the potentials of its application as well as its shortcomings especially in terms of performance degradation in light of the impossibility of using PEP-based solutions to boost data transfers.&lt;/p&gt;&lt;p&gt;The second paper ‘Supervised Machine Learning for Power and Bandwidth Management in VHTS Systems’ analyses the potential of supervised machine learning solutions applied to the problem of resource allocation for VHTS systems implementing flexible payloads. In particular, the case of performance optimisation achievable by suitably allocating power and bandwidth onboard satellite is investigated. The results obtained by means of effective machine learning solutions outperform classical configurations taken from the existing literature.&lt;/p&gt;&lt;p&gt;In the third paper ‘Design of a 3D ray-tracing model based on digital elevation model for comprehension of large- and s","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 6","pages":"377-378"},"PeriodicalIF":1.7,"publicationDate":"2022-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1462","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51508805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Slant path rain attenuation predictions for Ku and Ka band frequencies from rain cell size distribution over a tropical region in southern India","authors":"Vishnu Vardhan Reddy Kalluru,&nbsp;Chandrika Panigrahi,&nbsp;Vedavathi Cherlopalli,&nbsp;Vijaya Bhaskara Rao Sarangam","doi":"10.1002/sat.1457","DOIUrl":"10.1002/sat.1457","url":null,"abstract":"<div>\u0000 \u0000 <p>Rain cell size distribution that provides an insight into the modelling of effective slant path length and also imperative for site diversity studies are carried out for a tropical inland location, Tirupati (13.6°N, 76.3°E), India. Rain cell size distribution obtained from 5 years (2013–2015 and 2017–2018) of Parsivel disdrometer measurements is observed to follow the power law. Reduction factor that accounts for the inhomogeneity of the rain along the propagation path for the region of study is modified in terms of the rain cell size distribution of the area. Slant path rain attenuation, a major propagation impediment at Ku and Ka-band links, is then studied using the results from the regional rain characteristics by modifying the CCIR 564-4 report. The attenuation results are compared with Garcia-Lopez, Excell, Bryant, and Ramachandran models while considering the ITU-R P. 618-13 as the standard model.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"41 1","pages":"29-41"},"PeriodicalIF":1.7,"publicationDate":"2022-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41574268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A probabilistic routing algorithm based on node communication capability and message strength","authors":"Yanan Chang,&nbsp;Qiyun Wan,&nbsp;Jianqun Cui,&nbsp;Ruijie Zhang,&nbsp;Jike Wu,&nbsp;Hao Zhou","doi":"10.1002/sat.1458","DOIUrl":"10.1002/sat.1458","url":null,"abstract":"<div>\u0000 \u0000 <p>In delay-tolerant networks (DTN), node connection time and message transmission time are two important influencing factors that can improve the delivery rate. In this paper, we first define a new concept called communication capability (CC) and then apply this concept to the delivery predictability formulation in Prophet and improve it. Then, in Prophet, the selection of relay nodes relies only on the delivery predictability and ignores the caching and forwarding capability of the node. Therefore, we combine delivery predictability, buffering, and forwarding capability to develop a new adaptive relay node selection strategy. Subsequently, we define two metrics called message priority (MP) and message strength (MS). The node forwards messages sequentially based on message priority and discards messages based on message strength. Finally, we present a probabilistic routing algorithm based on node communication capability and message strength (CAMS). The simulation results show that compared with traditional routing algorithms, the CAMS can effectively improve the message delivery rate, reduce the overhead ratio, and keep average hop counts low.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"41 1","pages":"42-58"},"PeriodicalIF":1.7,"publicationDate":"2022-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43718786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Joint parameter estimation and decoding in a distributed receiver","authors":"Ahsan Waqas,&nbsp;Khoa Nguyen,&nbsp;Gottfried Lechner,&nbsp;Terence Chan","doi":"10.1002/sat.1460","DOIUrl":"10.1002/sat.1460","url":null,"abstract":"<p>This paper presents an algorithm for iterative joint channel parameter (carrier phase, Doppler shift, and Doppler rate) estimation and decoding of transmission over channels affected by Doppler shift and Doppler rate using a distributed receiver. This algorithm is derived by applying the sum-product algorithm (SPA) to a factor graph representing the joint a posteriori distribution of the information symbols and channel parameters given the channel output. In this paper, we present two methods for dealing with intractable messages of the SPA. In the first approach, we use particle filtering with sequential importance sampling for the estimation of the unknown parameters. We also propose a method for fine-tuning of particles for improved convergence. In the second approach, we approximate our model with a random walk phase model, followed by a phase tracking algorithm and polynomial regression algorithm to estimate the unknown parameters. We derive the Weighted Bayesian Cramer-Rao Bounds for joint carrier phase, Doppler shift, and Doppler rate estimation, which take into account the prior distribution of the estimation parameters and are accurate lower bounds for all considered signal-to-noise ratio values. Numerical results (of bit error rate and the mean-square error of parameter estimation) suggest that phase tracking with the random walk model slightly outperforms particle filtering. However, particle filtering has a lower computational cost than the random walk model-based method.</p>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"41 1","pages":"59-81"},"PeriodicalIF":1.7,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/sat.1460","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46426542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A post quantum secure construction of an authentication protocol for satellite communication","authors":"Dharminder Dharminder,&nbsp;Pradeep Kumar Dadsena,&nbsp;Pratik Gupta,&nbsp;Sathya Sankaran","doi":"10.1002/sat.1455","DOIUrl":"10.1002/sat.1455","url":null,"abstract":"<div>\u0000 \u0000 <p>Satellite's communication system is used to communicate under significant distance and circumstances where the other communication systems are not comfortable. Since all the data are exchanged over a public channel, so the security of the data is an essential component for the communicating parties. Both key exchange and authentication are two cryptographic tools to establish a secure communication between two parties. Currently, various kinds of authentication protocols are available to establish a secure network, but all of them depend on number–theoretical (discrete logarithm problem/factorization assumption) hard assumptions. Due to Shor's and Grover's computing algorithm number theoretic assumptions are breakable by quantum computers. Although Kumar and Garg have proposed a quantum attack-resistant protocol for satellite communication, it cannot resist stolen smart card attack. We have analyzed that how Kumar and Garg is vulnerable to the stolen smart card attack using differential power analysis attack described in He et al and Chen and Chen. We have also analyzed the modified version of signal leakage attack and sometimes called improved signal leakage attack on Kumar and Garg's protocol. We have tried to construct a secure and efficient authentication protocol for satellites communication that is secure against quantum computing. This is more efficient as it requires only three messages of exchange. This paper includes security proof and performance of the proposed authentication and key agreement protocol.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"41 1","pages":"14-28"},"PeriodicalIF":1.7,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47630683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On-orbit results for radial distances between collocated GEO satellites for RF analysis","authors":"Umit Cezmi Yilmaz","doi":"10.1002/sat.1453","DOIUrl":"10.1002/sat.1453","url":null,"abstract":"<div>\u0000 \u0000 <p>Because the GEO belt is becoming more and more crowded every day, controlling the number of satellites in the same control box is becoming more common. There are different kinds of collocation strategies to control more than two satellites in the same box, such as (1) eccentricity and inclination separation or (2) longitude separation. TURKSAT has been using option (1) for a long time. In this paper, we demonstrated TURKSAT on-orbit experience to show mainly radial distances between the satellites. The motivation of this study is to demonstrate how often the satellites are becoming behind of each other, which can be used for RF colocation analysis. Most of the cases the worst case for RF interference analysis between two collocated satellites is having zero distance in normal and tangential but having a radial distance only. In this study, based on the radial distance thresholds, the noninterfered link availability is also shown.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 5","pages":"371-376"},"PeriodicalIF":1.7,"publicationDate":"2022-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43700230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on GNSS interference recognition based on ROI of correlation peaks","authors":"Bin Yang,&nbsp;Chunxiao Dong,&nbsp;Bo Gao,&nbsp;Yongjun Liu,&nbsp;Weijia Cui,&nbsp;Fei Gao","doi":"10.1002/sat.1444","DOIUrl":"10.1002/sat.1444","url":null,"abstract":"<div>\u0000 \u0000 <p>The general Global Navigation Satellite System (GNSS) receiver faces several challenges because of jamming signals, spoofing signals, and multipath signals, which severely influence its safety. In this paper, a receiver scheme with an interference recognition function is designed. In the latter, the correlation peak with different shapes is produced according to different interferences. The machine learning method is then applied to recognize and classify these feature maps. This transforms the interference recognition problem into a machine learning-based classification problem. In order to reduce the complexity of the machine learning network, only the finite-length correlation peak region of interest (ROI) is extracted as network input, endowing the shallow neural network with the interference recognition function. Afterward, five data acquisition environments are designed: authentic, spoofing, jamming, non-line-of-sight (NLOS) multipath, and line-of-sight (LOS) multipath. Moreover, several experimental data are acquired, followed by the production of the correlation peak maps dataset, that are then learned and tested using two machine learning networks: one-dimensional convolutional neural network (1D-CNN) and bidirectional long short-term memory neural network (BiLSTM-NN). The results demonstrate that a recognition accuracy rate of over 98% can be reached using the shallow machine learning network.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 5","pages":"330-342"},"PeriodicalIF":1.7,"publicationDate":"2022-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51508662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A note on an enhanced dynamic authentication scheme for mobile satellite communication systems","authors":"Uddeshaya Kumar,&nbsp;Manish Garg","doi":"10.1002/sat.1443","DOIUrl":"10.1002/sat.1443","url":null,"abstract":"<div>\u0000 \u0000 <p>Recently, Yulei Chen and Jianhua Chen (An enchanced dynamic authentication scheme for mobile satellite communication systems. Int J Satell Commun Netw. 2020; 39(3): 250-262) presented an enhanced dynamic authentication scheme for mobile satellite communication systems in 2020. The authors found that there is a flaw in the authentication phase of the scheme proposed by Yulei Chen and Jianhua Chen's scheme. Due to this flaw, user is unable to authenticate to NCC (network control center) and also fails to establish the session key with NCC. In this paper, the authors improved the Yulei Chen and Jianhua Chen's scheme. In the proposed scheme, it is shown that user is able to authenticate to NCC (network control center) and also establish the session key with NCC. The authors also demonstrate that the computation cost and communication cost are also decreased.</p>\u0000 </div>","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":"40 5","pages":"317-329"},"PeriodicalIF":1.7,"publicationDate":"2022-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46882041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Issue Information","authors":"","doi":"10.1002/sat.1408","DOIUrl":"https://doi.org/10.1002/sat.1408","url":null,"abstract":"No abstract is available for this article.","PeriodicalId":50289,"journal":{"name":"International Journal of Satellite Communications and Networking","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47916472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}