2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC)最新文献_第2页

Impact of Acknowledgements using IETF QUIC on Satellite Performance 使用IETF QUIC对卫星性能的影响

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/SPSC48805.2020.9268894

A. Custura, T. Jones, G. Fairhurst

引用次数: 4

A Flexible OFDM-Like DFT-s-OFDM Reference Symbol 一种灵活的类似ofdm的DFT-s-OFDM参考符号

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/SPSC48805.2020.9268819

A. Bouttier

{"title":"A Flexible OFDM-Like DFT-s-OFDM Reference Symbol","authors":"A. Bouttier","doi":"10.1109/ASMS/SPSC48805.2020.9268819","DOIUrl":"https://doi.org/10.1109/ASMS/SPSC48805.2020.9268819","url":null,"abstract":"With many high throughput satellites (HTS) in space, the satellite industry is now able to provide flexible services at costs that tend to become competitive. Satellite networks may ultimately play a significant role in the global telecommunication market. As an illustration of this trend, satellite stakeholders are pushing with some success for a satellite component in the global 5G system. With power fluctuations similar to those of single carrier waveforms, the discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) modulation appears as a relevant waveform for some satellite applications such as backhauling. Despite its many advantages, DFT-s-OFDM still lacks of reference signals (RS) showing low-power fluctuations for whatever length. In this paper, we propose a new RS that consists in inserting an OFDM pilot with its own cyclic prefix within a DFT-s-OFDM symbol. The novelty is here to modulate specific samples that are computed to closely match - after modulation - the OFDM pilot thus minimizing the interference resulting from the insertion. Performance evaluations assess the relevance of the proposed scheme that brings the flexibility of OFDM RS to DFT-s-OFDM systems.","PeriodicalId":218343,"journal":{"name":"2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"24 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":"114312503","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

Coexistence for LTE-Advanced and FSS Services in the 3.5GHz Band in Colombia 哥伦比亚3.5GHz频段LTE-Advanced和FSS业务共存

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/SPSC48805.2020.9268784

G. Castellanos, G. Teuta, Hernán Paz Penagos, W. Joseph

{"title":"Coexistence for LTE-Advanced and FSS Services in the 3.5GHz Band in Colombia","authors":"G. Castellanos, G. Teuta, Hernán Paz Penagos, W. Joseph","doi":"10.1109/ASMS/SPSC48805.2020.9268784","DOIUrl":"https://doi.org/10.1109/ASMS/SPSC48805.2020.9268784","url":null,"abstract":"The 3.5GHz band is an optimal candidate for 5G networks due to its propagation characteristics and massive bandwidth. However, services like the Fixed Satellite Service (FSS) are using this band in several countries. Therefore, this paper presents a coexistence study of the Long Term Evolution - Advanced (LTE-A) and FSS services in the 3500–3700 MHz in Colombia. Simulations were done in realistic scenarios in the city of Bogota, Colombia. Preliminary results show that critical scenarios are the ones from the LTE eNodeB (eNB) and Users Equipment (UE) nodes to the FSS earth stations. The study includes the analysis of Guard Bands (GB) and arrival angles into the Protection Distances (PD). Results show that the PD is highly dependent on the angle of the interfering signal and the GB used. The PD for a cochannel interference in a suburban scenario is higher than 250km, in the worst-case scenario, and could be reduced down to 17.5 km if a 25 MHz GB is included and the angular difference of the interfering LTE-A signal is 42□. Moreover, our results show that the PD needed for interference from UE are 100 times less compared to the eNB ones.","PeriodicalId":218343,"journal":{"name":"2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"3 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":"130043434","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

On the Random Access Procedure of NB-IoT Non-Terrestrial Networks NB-IoT非地面网络随机接入过程研究

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/SPSC48805.2020.9268788

O. Kodheli, N. Maturo, S. Chatzinotas, S. Andrenacci, F. Zimmer

引用次数: 13

Advanced Receiver Strategy for Co-Channel Interference in Multibeam Satellite Systems 多波束卫星系统中同信道干扰的先进接收机策略

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/SPSC48805.2020.9268879

B. F. Beidas, R. I. Seshadri

{"title":"Advanced Receiver Strategy for Co-Channel Interference in Multibeam Satellite Systems","authors":"B. F. Beidas, R. I. Seshadri","doi":"10.1109/ASMS/SPSC48805.2020.9268879","DOIUrl":"https://doi.org/10.1109/ASMS/SPSC48805.2020.9268879","url":null,"abstract":"Breaking the barrier of Terabit-per-second connectivity in multibeam satellite systems is impeded by the scarcity of frequency spectrum. Aggressive frequency reuse can overcome spectrum limitations but at the expense of inducing harsh cochannel interference (CCI). This problem is further compounded by memory effects of CCI, arising when co-channel signals combine asynchronously. To avoid exponential increase in complexity, state-of-the-art user-terminal receivers assume memoryless CCI, thus harming their performance. First, we provide analytical characterization of CCI accounting for memory, a formulation that captures synchronization impairments. Then, low-complexity receivers are developed to compensate for spatial and temporal CCI profiles, with computational complexity increasing only linearly in the memory span. This is achieved by our novel soft-in soft-out, iterative divide-and-conquer (IDAC) strategy, decomposing interference into smaller sets depending on intensity. A set is created from weak interferers which are not decoded but considered as thermal noise. The interferers which are decoded are further split into a set that subtracts strong ones and another set addressing intense interferers in an optimal-Bayesian fashion. Extensive numerical studies reveal that the IDAC architecture offers lossless compensation of dominant CCI with memory, when rate coordination is guided by network information theory, offering beam-edge user terminals an edgeless quality-of-service.","PeriodicalId":218343,"journal":{"name":"2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"55 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":"124994080","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

Channel Interleaver Dimensioning for Optical LEO Direct-to-Earth Systems 光学LEO直接对地系统的信道交织器尺寸

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/SPSC48805.2020.9268852

Nicolò Mazzali, Pantelis-Daniel M. Arapoglou

{"title":"Channel Interleaver Dimensioning for Optical LEO Direct-to-Earth Systems","authors":"Nicolò Mazzali, Pantelis-Daniel M. Arapoglou","doi":"10.1109/ASMS/SPSC48805.2020.9268852","DOIUrl":"https://doi.org/10.1109/ASMS/SPSC48805.2020.9268852","url":null,"abstract":"Following the recent publication of the first recommended standard on optical communications by the Consultative Committee for Space Data Systems (CCSDS), the focus of the standardization group turns now to the optical low Earth orbit (LEO) direct-to-Earth (DTE) satellite link scenario. This scenario is nicknamed optical on-off keying (O3K) due to the choice of this binary modulation format. In optical LEO DTE links the main impairment is atmospheric turbulence, which is a slow fading process with relatively long coherence time (typically some milliseconds). To mitigate this and to allow for any forward error correction (FEC) code to operate properly, a long channel interleaver is usually employed at the physical layer. The present paper provides some practical guidance on how to dimension such an interleaver by performing a realistic numerical analysis based on a comprehensive software simulator, along with a statistical analysis to gain a deeper insight. Overall, this work is meant to support the CCSDS O3K standardization activity.","PeriodicalId":218343,"journal":{"name":"2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"31 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":"132458750","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

Semianalytical Estimation of Nonlinear Distortion in Active Antennas 有源天线非线性失真的半解析估计

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/SPSC48805.2020.9268834

Nicolò Mazzali, A. Ginesi

引用次数: 0

QUIC: Opportunities and threats in SATCOM 卫星通信的机遇和威胁

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/SPSC48805.2020.9268814

N. Kuhn, F. Michel, Ludovic Thomas, E. Dubois, E. Lochin

{"title":"QUIC: Opportunities and threats in SATCOM","authors":"N. Kuhn, F. Michel, Ludovic Thomas, E. Dubois, E. Lochin","doi":"10.1109/ASMS/SPSC48805.2020.9268814","DOIUrl":"https://doi.org/10.1109/ASMS/SPSC48805.2020.9268814","url":null,"abstract":"This article proposes a discussion on the strengths, weaknesses, opportunities and threats related to the deployment of QUIC end-to-end from a satellite-operator point-of-view. The deployment of QUIC is an opportunity for improving the quality of experience when exploiting satellite broadband accesses. Indeed, the fast establishment of secured connections reduces the short files transmission time. Moreover, removing transport layer performance enhancing proxies reduces the cost of network infrastructures and improves the integration of satellite systems. However, the congestion and flow controls at end points are not always suitable for satellite communications due to the intrinsic high bandwidth-delay product. Further acceptance of QUIC in satellite systems would be guaranteed if its performance in specific use-cases is increased. We propose a running code for an IETF document, and based on an emulated platform and on open-source software, this paper proposes values of performance metrics just as one piece of the puzzle. The final performance objective requires consensus among the different actors. The objective should be challenging enough for satellite operators to allow QUIC traffic but reasonable enough to keep QUIC deployable on the Internet.","PeriodicalId":218343,"journal":{"name":"2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"92 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":"133631363","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: 16

Study on Error Correction in IP Network with LDPC Codes for Satellite Broadcasting and Coding Rate Conversion Method with Padding Bits 卫星广播用LDPC码的IP网络纠错及填充位码率转换方法研究

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/SPSC48805.2020.9268896

Y. Koizumi, Yoichi Suzuki, Tomoya Kusunoki, Kazunori Yokohata, H. Sujikai

{"title":"Study on Error Correction in IP Network with LDPC Codes for Satellite Broadcasting and Coding Rate Conversion Method with Padding Bits","authors":"Y. Koizumi, Yoichi Suzuki, Tomoya Kusunoki, Kazunori Yokohata, H. Sujikai","doi":"10.1109/ASMS/SPSC48805.2020.9268896","DOIUrl":"https://doi.org/10.1109/ASMS/SPSC48805.2020.9268896","url":null,"abstract":"We are developing the diverse reception system, which uses route diversity between a broadcasting satellite and IP network to compensate for 21-GHz band satellite broadcasting rain attenuation. This system will be able to improve service availability by covering a rainy area (where satellite broadcasting occasionally cannot be received due to rain attenuation) with a signal from a sunny area via an IP network. This system also uses a common forward error correction (FEC) technique between the broadcasting satellite and IP network, which enables seamless channel switching and makes the reception algorithm common between both channels. In this paper, we focus on a FEC technique in IP network, which is key to achieve this system. We evaluated the error-correction performance in an IP network with the LDPC codes designed for satellite broadcasting through computer simulation. We also propose a method of adjusting the LDPC coding rate with padding bits according to the transmission characteristics of broadcasting satellite and IP network, which reduces IP traffic congestion. Therefore, the LDPC codes designed for satellite broadcasting can achieve adequate error-correction performance even in an IP network with packet loss.","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":"129917476","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

Supervised Machine Learning for Power and Bandwidth Management in VHTS Systems VHTS系统中功率和带宽管理的监督机器学习

2020 10th Advanced Satellite Multimedia Systems Conference and the 16th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2020-10-20 DOI: 10.1109/ASMS/SPSC48805.2020.9268790

Flor G. Ortiz-Gomez, D. Tarchi, R. M. Rodríguez-Osorio, A. Vanelli-Coralli, M. Salas-Natera, Salvador Landeros‐Ayala

引用次数: 5