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2006 International Workshop on Satellite and Space Communications最新文献

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The Trivariate Weibull Distribution with Arbitrary Correlation 具有任意相关的三元威布尔分布
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.256036
Z.G. Papadimitriou, N. Sagias, P. Bithas, P. Mathiopoulos, L. Merakos
{"title":"The Trivariate Weibull Distribution with Arbitrary Correlation","authors":"Z.G. Papadimitriou, N. Sagias, P. Bithas, P. Mathiopoulos, L. Merakos","doi":"10.1109/IWSSC.2006.256036","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.256036","url":null,"abstract":"In this paper an analytical framework for analyzing the arbitrarily correlated trivariate Weibull distribution is introduced. For this distribution infinite series representations for the joint probability density function, the cumulative distribution function (CDF) and the moments are derived. Two special correlation cases of the distribution are studied: the exponential and the constant. These series representations are readily applicable to the performance analysis of a 3-branch selection combining (SC) receiver operating in a Weibull correlation fading environment and the outage probability is derived. The proposed mathematical analysis is complemented by various numerical results, showing the effects of fading severity, correlation and the power decay factor","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"36 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113971028","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
Design and Simulation of a Proposed Radon Based OFDM Transceiver 一种基于氡的OFDM收发器的设计与仿真
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.255981
O.M.M. Faraj
{"title":"Design and Simulation of a Proposed Radon Based OFDM Transceiver","authors":"O.M.M. Faraj","doi":"10.1109/IWSSC.2006.255981","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.255981","url":null,"abstract":"In this paper, a class of discrete Radon transform, namely, finite Radon transform is proposed for the first time as a new technique in the realization of the orthogonal frequency division multiplexing (OFDM). The Radon transform is chosen in the OFDM structure to serve as a data mapper instead of the conventional data mapping techniques like the phase shift keying (PSK) mapping, in a way that ensure increasing the orthogonality of the system. The Fourier domain approach is found here to be the more suitable way for obtaining the forward and the inverse of the Radon transform. It is shown that this new application increases the orthogonality significantly due to the use of the inverse Fourier transform twice, namely, in the data mapping and in the sub-carrier modulation also, due to the use of an efficient criterion in determining the mapped data, which is called the optimal ordering criterion","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"535 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123844159","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
Analysis of the Efficiency and Delay of Bandwidth Request Algorithms in DVB-RCS DVB-RCS中带宽请求算法的效率和时延分析
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.256016
A. Omari, G. Seco-Granados, M. Vázquez-Castro, A. Morell, A. Lyhyaoui, N. Raissouni
{"title":"Analysis of the Efficiency and Delay of Bandwidth Request Algorithms in DVB-RCS","authors":"A. Omari, G. Seco-Granados, M. Vázquez-Castro, A. Morell, A. Lyhyaoui, N. Raissouni","doi":"10.1109/IWSSC.2006.256016","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.256016","url":null,"abstract":"The bandwidth-on-demand (BoD) access mechanism plays a key role in DVB-RCS satellite systems in order to optimize bandwidth utilization. Two algorithms intervene in this mechanism, namely the bandwidth allocation algorithm and the bandwidth request algorithm. In this paper a bandwidth request algorithm is proposed. An adaptive version of the algorithm is also presented, which allows for an easy control of the queue size at the terminal even in changing traffic conditions. An event-driven simulator of the BoD loop has been developed and used to evaluate the performance of the proposed algorithm. Simulations have carried out for different combinations of Poisson and VoIP traffic. They show that the algorithm reacts correctly to sudden changes of the input rate and of the received allocation","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129146842","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
Use of Quickstart for Improving the Performance of TFRC-SP Over Satellite Networks 利用快速启动技术提高卫星网络上TFRC-SP的性能
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.255988
Arjuna Sathiaseelan, G. Fairhurst
{"title":"Use of Quickstart for Improving the Performance of TFRC-SP Over Satellite Networks","authors":"Arjuna Sathiaseelan, G. Fairhurst","doi":"10.1109/IWSSC.2006.255988","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.255988","url":null,"abstract":"The TCP-friendly rate control for small packets (TFRC-SP) protocol was designed for applications including streaming audio and voice over IP which send small packets. The long round trip delay of a satellite link could degrade the performance of such applications including streaming audio and VoIP that use TFRC-SP. In this paper, we analyze the performance of TFRC-SP carrying live streaming audio and VoIP over networks that include satellite paths. We also propose using the quickstart algorithm along with TFRC-SP to improve the performance of these applications over a satellite link","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131452450","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: 21
Software radio in space segment: applications, technologies, reconfiguration management and architectures 空间段软件无线电:应用、技术、重新配置管理和体系结构
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.256041
C. Morlet
{"title":"Software radio in space segment: applications, technologies, reconfiguration management and architectures","authors":"C. Morlet","doi":"10.1109/IWSSC.2006.256041","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.256041","url":null,"abstract":"This tutorial presents how software defined radio can be implemented in the space segment, especially for telecommunication applications, detailing applications and functionalities suited to such kind of technology, the reconfigurable hardware/software devices applicable in space, the methodology of reconfiguration and the payload architectures","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132649304","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
Switched Diversity Receivers over Correlated Weibull Fading Channels 相关威布尔衰落信道上的切换分集接收机
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.256011
P. Bithas, P. Mathiopoulos, G. Karagiannidis
{"title":"Switched Diversity Receivers over Correlated Weibull Fading Channels","authors":"P. Bithas, P. Mathiopoulos, G. Karagiannidis","doi":"10.1109/IWSSC.2006.256011","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.256011","url":null,"abstract":"The problem of analyzing the performance of switch and stay combing (SSC) diversity receivers, operating over correlated and not necessarily identical distributed Weibull fading channels is considered in this paper. By means of a convenient expression for the bivariate Weibull distribution, the probability density function (PDF) of the SSC output signal-to-noise ratio (SNR) is derived in terms of the first order Marcum's Q-function. The moments of the output SNR and the corresponding cumulative distribution function (CDF) are also obtained in closed form and are utilized to derive expressions for the average output SNR, amount of fading and outage probability. By using a rapidly convergent infinite series representation for the bivariate Weibull distribution, an analytical expression for the moments generating function (MGF) is derived. The MGF can be efficiently used to evaluate the average bit error probability (ABEP) for several modulation schemes. The proposed mathematical analysis is complimented by various numerical evaluated results, which evaluate the effects of fading severity and correlation on the overall system performance","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123736159","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
A Hardware ULE Decapsulator for the Unidirectional Lightweight Encapsulation 用于单向轻量级封装的硬件规则解封装器
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.255990
B. Collini-Nocker, C. Prahauser, J. Schmidbauer
{"title":"A Hardware ULE Decapsulator for the Unidirectional Lightweight Encapsulation","authors":"B. Collini-Nocker, C. Prahauser, J. Schmidbauer","doi":"10.1109/IWSSC.2006.255990","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.255990","url":null,"abstract":"The unidirectional lightweight encapsulation (ULE) is designed to efficiently transport IPv4/IPv6 over MPEG-2 networks, such as digital video broadcasting (DVB) and Advanced Television Systems Committee (ATSC) which have been defined for various transmission systems like satellite, cable or terrestrial. ULE has little overhead and is flexible, however, hardware manufacturers of integrated receiver decoders may find it difficult to implement. In this paper, a hardware decapsulator for ULE is presented. Besides detailing the state machine and discussing the VHDL code the paper also provides first measurement results","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125412928","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
Visions for Future DVB-RCS Systems, Communications for a Mixed Traffic Scenario 展望未来DVB-RCS系统，混合交通场景下的通信
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.255997
H. Skinnemoen, E. Ersland
{"title":"Visions for Future DVB-RCS Systems, Communications for a Mixed Traffic Scenario","authors":"H. Skinnemoen, E. Ersland","doi":"10.1109/IWSSC.2006.255997","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.255997","url":null,"abstract":"The DVB-RCS specification, the first true broadband satellite standard, was first published, to high expectations, in 1999. Technically, it is an excellent standard for the physical layer. However, the structure of the DVB-RCS business has recently undergone significant changes and the subscriber count is still lower than expected some time back. The motivation for this paper is based on the present situation for DVB-RCS, while the purpose is to review the present status of DVB-RCS and to provide some visions of possible future directions. The authors provide the views based on a technological and an operational point of view","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125461634","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: 2
Subspace Array Processing for Interference Mitigation in L1-Band Galileo Receivers l1波段伽利略接收机干扰抑制的子空间阵列处理
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.256013
M. Iubatti, M. Casadei, R. Pedone, A. Vanelli-Coralli, G. Corazza, Rodolfo Crescimbeni
{"title":"Subspace Array Processing for Interference Mitigation in L1-Band Galileo Receivers","authors":"M. Iubatti, M. Casadei, R. Pedone, A. Vanelli-Coralli, G. Corazza, Rodolfo Crescimbeni","doi":"10.1109/IWSSC.2006.256013","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.256013","url":null,"abstract":"In this paper we address the problem of interference mitigation (IM) for the Galileo system. In particular, a IM technique that jointly exploits space, time, and frequency (STF) domains is investigated, extending the approach presented for conventional BPSK DS-SS systems to the representative Galileo L1-band scenario. The proposed technique attempts to remove the undesired signal by projecting the received signal into the subspace orthogonal to the interference subspace, which is designed based on the estimation of the interference signature in space, time, and frequency. The robustness of the proposed technique against practical estimation errors, which can affect both interfering angle of arrival and instantaneous frequency, is investigated in detail in the paper, proving the validity of the technique in realistic scenarios and showing interesting trade-offs","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"28 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124436403","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
IP Multicast over New Generation Satellite Networks. A Case Study: AmerHis. 新一代卫星网络上的IP多播。案例研究:AmerHis。
2006 International Workshop on Satellite and Space Communications Pub Date : 2006-12-11 DOI: 10.1109/IWSSC.2006.256020
A. Y. Garcia, I. M. Asenjo, F.J.R. Pinar
{"title":"IP Multicast over New Generation Satellite Networks. A Case Study: AmerHis.","authors":"A. Y. Garcia, I. M. Asenjo, F.J.R. Pinar","doi":"10.1109/IWSSC.2006.256020","DOIUrl":"https://doi.org/10.1109/IWSSC.2006.256020","url":null,"abstract":"This paper introduces the most relevant issues regarding efficient IP multicast over new generation satellite networks based on on board processing (OBP). The state-of-the-art experiences will be illustrated with a case study: the AmerHis DVB-RCS platform whose core OBP is part of Hispasat's AMAZONAS satellite","PeriodicalId":335831,"journal":{"name":"2006 International Workshop on Satellite and Space Communications","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131939904","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: 9
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