2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC)最新文献_第2页

ACCORD - Automatic reconfigurable radio for dual-use ACCORD -自动可重新配置无线电两用

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934551

M. Andrenacci, S. Titomanlio, R. Suffritti, G. D'Angelo

引用次数: 0

Implementation Issues of Cognitive Radio techniques for Ka-band (17.7–19.7 GHz) SatComs ka波段(17.7-19.7 GHz)卫星通信中认知无线电技术的实现问题

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934550

S. Sharma, S. Maleki, S. Chatzinotas, J. Grotz, B. Ottersten

{"title":"Implementation Issues of Cognitive Radio techniques for Ka-band (17.7–19.7 GHz) SatComs","authors":"S. Sharma, S. Maleki, S. Chatzinotas, J. Grotz, B. Ottersten","doi":"10.1109/ASMS-SPSC.2014.6934550","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2014.6934550","url":null,"abstract":"The usable satellite spectrum has become scarce due to continuously increasing demand for broadband multimedia, broadcast and interactive services. In this context, investigating efficient spectrum coexistence techniques is a crucial challenge in order to enhance the spectral efficiency of future satellite systems. Herein, we study a satellite-terrestrial coexistence scenario where a Fixed Satellite Service (FSS) downlink coexists with the Fixed Service (FS) point to point microwave links in the Ka-band (17.7-19.7 GHz). First, we identify various practical challenges and provide possible solutions in order to allow this coexistence. Then we propose four different sensing and avoidance schemes in order to protect FSS satellite terminals from the harmful FS interference. Further, we evaluate the performance of one of the proposed solutions in the considered scenario with the help of theoretical and numerical analysis. More specifically, we focus on harmful FS detection problem in order to guarantee the sufficient protection of FSS terminals. It is shown that the FS harmful interference can be reliably detected with the help of an additional dipole antenna and this solution further overcomes the noise uncertainty problem encountered while sensing with the satellite dish.","PeriodicalId":192172,"journal":{"name":"2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124103570","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: 23

Advances of far field test range for SatCom On-the-Move terminals 卫星通信移动终端远场测试范围研究进展

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934578

Gregor Siegert, W. Felber, F. Raschke, Mostafa Alazab, D. Ogermann, A. Knopp, M. Landmann

引用次数: 2

Automatic Modulation Classification for adaptive Power Control in cognitive satellite communications 认知卫星通信中自适应功率控制的自动调制分类

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934549

Anestis Tsakmalis, S. Chatzinotas, B. Ottersten

{"title":"Automatic Modulation Classification for adaptive Power Control in cognitive satellite communications","authors":"Anestis Tsakmalis, S. Chatzinotas, B. Ottersten","doi":"10.1109/ASMS-SPSC.2014.6934549","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2014.6934549","url":null,"abstract":"Spectrum Sensing (SS) and Power Control (PC) have been two important concepts of Cognitive Radio (CR). In this paper, a mechanism combining these two topics is proposed to allow a cognitive user, also called Secondary User (SU), to access the frequency band of a Primary User (PU) operating based on an Adaptive Coding and Modulation (ACM) protocol. The suggested SS technique considers Higher Order Statistical (HOS) features of the signal and an efficient Machine Learning (ML) detector, the Support Vector Machine (SVM), in order to constantly monitor the modulation scheme of the PU. Once the Automatic Modulation Classification (AMC) is ensured, the SU can attempt to access the frequency band of the PU and increase its transmitting power until it causes a change of the PU's modulation scheme due to interference. When the SU detects the change of the PU's modulation scheme, then it reduces its transmitting power to a lower level so as to regulate the induced interference. This Adaptive Power Control (APC) algorithm converges to the aforementioned interference limit and guarantees preservation of the PU link QoS.","PeriodicalId":192172,"journal":{"name":"2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"52 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113931434","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: 18

Q-band beacon receiver for Alphasat TDP#5 propagation experiment 用于Alphasat TDP#5传播实验的q波段信标接收机

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934577

L. Csurgai-Horváth, István Rieger, Vilmos Beres, L. Kormos

引用次数: 4

Advanced topics in service delivery over integrated satellite terrestrial networks 在综合卫星地面网络上提供服务的高级专题

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934529

A. Kapovits, S. Covaci, C. Ververidis, V. Siris, M. Guta

{"title":"Advanced topics in service delivery over integrated satellite terrestrial networks","authors":"A. Kapovits, S. Covaci, C. Ververidis, V. Siris, M. Guta","doi":"10.1109/ASMS-SPSC.2014.6934529","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2014.6934529","url":null,"abstract":"This paper focuses on the evolution of communication networks and service delivery. It identifies major trends that will drive the evolution of networks and service delivery in the next years. Among them Software Defined Networking (SDN) is probably the single most important technology evolution trend that will change networking. Based on the identified trends it presents a reference service delivery architecture, which it then translates into selected satellite terrestrial integration scenarios. The paper argues that SDN, originating from data communications is a technology that should be considered in any satellite terrestrial integration scenario, and highlights its potential role in the selected integration scenarios. It concludes that for the successful integration of satellite in such future integrated scenarios that all encompass SDN a further extension of the OpenFlow standard is needed that considers and handles the specificities of the satellite communication links. This is basically a software and implementation issue, which could be handled as part of the continued revision and enhancement within the frame of OpenFlow standardization.","PeriodicalId":192172,"journal":{"name":"2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"37 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129376007","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: 7

A comparison of precoding techniques for the dual polarised land mobile satellite channel 双极化陆地移动卫星信道预编码技术的比较

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934520

Fiona Ni Mhearain, M. Sellathurai, C. Masouros

{"title":"A comparison of precoding techniques for the dual polarised land mobile satellite channel","authors":"Fiona Ni Mhearain, M. Sellathurai, C. Masouros","doi":"10.1109/ASMS-SPSC.2014.6934520","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2014.6934520","url":null,"abstract":"The dual polarised MIMO land mobile satellite channel offers spatial multiplexing gain for mobile broadcasting systems. Antenna diversity in satellite systems is difficult to obtain, due to the nature of the satellite channel and the absence of scatterers in the vicinity of the satellite transmitter; therefore dual polarisation offers a potential solution in achieving diversity. Receiver based equalisation has been explored for the LMS channel to date; this paper aims to explore the potential of transmitter based equalisation by investigating existing precoders and their performance in the dual polarised MIMO LMS channel. The case of a single-user is considered in which interference arises from cross-polarisation effects caused by propagation between two orthogonally circularly polarised transmit and receive antennas. To mitigate the effects of interference on the performance of the channel, precoding algorithms are implemented on the data to be transmitted whilst assuming channel state information at the transmitter is available. Linear precoding techniques, i.e. channel inversion, regularised channel inversion, selective channel inversion & correlation rotation, in addition to the non-linear precoding technique, Tomlinson-Harashima Precoding, are implemented and the error performance is investigated in three user environments; open rural, suburban and urban. The effects of the power loss and the increased dynamic range of the signal associated with each precoder are explored. The precoding analysis has been conducted using channel measurements recently obtained during the MIMOSA campaign conducted by the European Space Agency (ESA).","PeriodicalId":192172,"journal":{"name":"2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114763086","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

Broadcasting of multiple data streams in overlapping beams and suitable decoding methods 在重叠波束中广播多个数据流和合适的解码方法

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934521

S. Pfletschinger, M. Navarro

引用次数: 1

Index coding for unicast flows in interactive satellite networks 交互式卫星网络中单播流索引编码

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934546

M. Heindlmaier, A. Munari, G. Liva, M. Berioli

引用次数: 0

Contact Graph Routing enhancements for delay tolerant space communications 接触图路由增强延迟容忍空间通信

2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC) Pub Date : 2014-10-23 DOI: 10.1109/ASMS-SPSC.2014.6934518

Nikolaos Bezirgiannidis, C. Caini, Dmitrij David Padalino Montenero, M. Ruggieri, V. Tsaoussidis

{"title":"Contact Graph Routing enhancements for delay tolerant space communications","authors":"Nikolaos Bezirgiannidis, C. Caini, Dmitrij David Padalino Montenero, M. Ruggieri, V. Tsaoussidis","doi":"10.1109/ASMS-SPSC.2014.6934518","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2014.6934518","url":null,"abstract":"In this paper we present two enhancements to Contact Graph Routing (CGR), a Delay-/ Disruption- Tolerant Networking routing algorithm developed by NASA JPL for space environments with predetermined connectivity schedules, such as Interplanetary communications and LEO satellite systems. The first enhancement, CGR-ETO, aims to improve the accuracy of predicted bundle delivery time by considering the available information on queueing delay. The second, the Overbooking Management, aims to proactively handle contact oversubscription, which occurs when high priority bundles are forwarded for transmission on a contact that is already fully subscribed by lower priority bundles. Both enhancements have been inserted as optional features in the Interplanetary Overlay Network CGR implementation in order to comparatively evaluate their performance on a GNU/Linux testbed running the full protocol stack. The results show that the two enhancements are complementary and can significantly improve routing decisions compared to standard CGR.","PeriodicalId":192172,"journal":{"name":"2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130900060","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: 45