2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)最新文献_第2页

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2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-09-01 DOI: 10.1109/asms-spsc.2018.8510741

引用次数: 0

Cross-Layer Forward Packet Scheduling for Emerging Precoded Broadband Multibeam Satellite System 新兴预编码宽带多波束卫星系统的跨层前向分组调度

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-09-01 DOI: 10.1109/ASMS-SPSC.2018.8510717

E. Lagunas, S. Andrenacci, S. Chatzinotas, B. Ottersten

{"title":"Cross-Layer Forward Packet Scheduling for Emerging Precoded Broadband Multibeam Satellite System","authors":"E. Lagunas, S. Andrenacci, S. Chatzinotas, B. Ottersten","doi":"10.1109/ASMS-SPSC.2018.8510717","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510717","url":null,"abstract":"In this paper, we investigate the forward packet scheduling of a broadband GEO multibeam satellite system that aggressively reuses the user link frequency resources, and thus considers the implementation of interference mitigation techniques at the transmitter side to exploit the multi-antenna multiplexing via precoding. The scheduling and the precoding design are closely coupled with each other, making it very challenging to provide a joint optimal solution that can be implemented in practical systems. On the other hand, future broadband satellite systems have to be capable of accommodating heterogeneous services and guarantee their corresponding uneven Quality of Service (QoS) requirements. As a consequence, we propose a novel cross-layer scheduling algorithm which takes into account the physical layer framing together with the modulator and precoding functionality combined with system constraints imposed by QoS requirements in upper layers. The proposed design is compared and validated using numerical results considering a realistic multibeam satellite system.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116677998","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: 15

Message-Splitting for Interference Cancellation in Multibeam Satellite Systems 多波束卫星系统中用于干扰消除的消息分离

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-09-01 DOI: 10.1109/ASMS-SPSC.2018.8510733

T. Ramírez, C. Mosquera, Màrius Caus, A. Pastore, M. Navarro, N. Noels

引用次数: 7

Controlled Delay Scheduler for VoIP over LEO constellations on LMS channels 控制延迟调度VoIP在LEO星座在LMS信道

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-09-01 DOI: 10.1109/ASMS-SPSC.2018.8510722

B. Tauran, E. Lochin, J. Lacan, F. Arnal, Mathieu Gineste, N. Kuhn

{"title":"Controlled Delay Scheduler for VoIP over LEO constellations on LMS channels","authors":"B. Tauran, E. Lochin, J. Lacan, F. Arnal, Mathieu Gineste, N. Kuhn","doi":"10.1109/ASMS-SPSC.2018.8510722","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510722","url":null,"abstract":"Satellite transmissions can suffer from high channel impairments, especially on the link between a satellite and a mobile end-user. To cope with these errors, physical and link layer reliability schemes have been introduced at the price of an end-to-end delay increase resulting in high jitter. Unfortunately, both the delay and the jitter negatively impacts on multimedia traffic. As a matter of fact, not taking into account the channel state greatly decreases the Quality of Experience (QoE) of VoIP users. In this paper, we propose to solve this issue by scheduling data transmission as a function of the channel condition. We first investigate existing scheduling mechanisms and analyze their performance for VoIP traffic with the objective to lower both latency and jitter, which are the most important metrics to achieve a consistent VoIP service. We select the best candidate among several schedulers and propose a novel algorithm specifically designed to carry VoIP over LEO constellations. Our simulations show that in some scenarios, we double the QoE of VoIP users.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114877059","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

Polar-Coded Pulse Position Modulation for the Poisson Channel 泊松信道的极编码脉冲位置调制

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-09-01 DOI: 10.1109/ASMS-SPSC.2018.8510721

D. Donev, Georg Böcherer

引用次数: 4

Shared Position Technique for Interfered Random Transmissions in Satellite Communications 卫星通信中干扰随机传输的共享位置技术

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-09-01 DOI: 10.1109/ASMS-SPSC.2018.8510732

Selma Zamoum, J. Lacan, M. Boucheret, Jean-Baptiste Dupe, Mathieu Gineste

{"title":"Shared Position Technique for Interfered Random Transmissions in Satellite Communications","authors":"Selma Zamoum, J. Lacan, M. Boucheret, Jean-Baptiste Dupe, Mathieu Gineste","doi":"10.1109/ASMS-SPSC.2018.8510732","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510732","url":null,"abstract":"In this paper we propose a new random access (RA) channel technique for the return link of satellite communications. It concerns slotted transmissions. This proposed method called Shared Position Technique for Interfered random Transmissions (SPOTiT), is based on a shared knowledge between the receiver and each of the terminals. The shared information is about the time slot locations on which the terminal transmits its replicas as well as the preamble to use. The presented random version of SPOTiT aims to reduce the complexity of replicas localization process of the legacy technique Multireplica Decoding using Correlation based Localisation (MARSALA). It presents a less complex system without degrading performance and with no extra signaling information. Thus, SPOTiT is applied at the same level as MARSALA, i.e., when Contention Resolution Diversity Slotted Aloha (CRDSA) fails in retrieving more packets. This technique combined with CRDSA significantly reduces the number of data localization correlations, while maintaining the same performance as in CRDSA/MARSALA in terms of packet loss ratio and throughput.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131733326","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: 5

A New Earth-LEO Propagation Campaign at Q and W-band Q和w波段的地球- leo新传播运动

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-09-01 DOI: 10.1109/ASMS-SPSC.2018.8510750

J. Flávio, F. Cuervo, M. Schönhuber, Michael Schmidt, D. Vanhoenacker-Janvier, A. Martin-Polegre, A. Martellucci

引用次数: 6

Caching at the Edge with Fountain Codes 边缘缓存与喷泉代码

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-07-15 DOI: 10.1109/ASMS-SPSC.2018.8510726

Estefanía Recayte, Francisco Lázaro, G. Liva

引用次数: 7

Code Design for Non-Coherent Detection of Frame Headers in Precoded Satellite Systems 卫星预编码系统中帧头非相干检测的编码设计

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-06-07 DOI: 10.1109/ASMS-SPSC.2018.8510735

F. Kayhan, G. Montorsi

引用次数: 2

Geographical Scheduling for Multicast Precoding in Multi-Beam Satellite Systems 多波束卫星系统中多播预编码的地理调度

2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2018-04-18 DOI: 10.1109/ASMS-SPSC.2018.8510728

A. Guidotti, A. Vanelli-Coralli

{"title":"Geographical Scheduling for Multicast Precoding in Multi-Beam Satellite Systems","authors":"A. Guidotti, A. Vanelli-Coralli","doi":"10.1109/ASMS-SPSC.2018.8510728","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510728","url":null,"abstract":"Current State-of-the-Art High Throughput Satellite systems provide wide-area connectivity through multi-beam architectures. Due to the tremendous system throughput requirements that next generation Satellite Communications (SatCom) expect to achieve, traditional 4-colour frequency reuse schemes are not sufficient anymore and more aggressive solutions as full frequency reuse are being considered for multi-beam SatCom. These approaches require advanced interference management techniques to cope with the significantly increased inter-beam interference both at the transmitter, e.g., precoding, and at the receiver, e.g., Multi User Detection (MUD). With respect to the former, several peculiar challenges arise when designed for SatCom systems. In particular, multiple users are multiplexed in the same transmission radio frame, thus imposing to consider multiple channel matrices when computing the precoding coefficients. In previous works, the main focus has been on the users’ clustering and precoding design. However, even though achieving significant throughput gains, no analysis has been performed on the impact of the system scheduling algorithm on multicast precoding, which is typically assumed random. In this paper, we focus on this aspect by showing that, although the overall system performance is improved, a random scheduler does not properly tackle specific scenarios in which the precoding algorithm can poorly perform. Based on these considerations, we design a Geographical Scheduling Algorithm (GSA) aimed at improving the precoding performance in these critical scenarios and, consequently, the performance at system level as well. Through extensive numerical simulations, we show that the proposed GSA provides a significant performance improvement with respect to the legacy random scheduling.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116989535","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: 30