Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409412
S. Farrell, V. Cahill
The Licklider transmission protocol (LTP) is a delay-tolerant point-to-point protocol being developed by the Delay-Tolerant Networking Research Group (DTNRG). LTP-Transport is an extension to LTP that provides end-to-end services and which is designed to be a generic Delay-Tolerant Network (DTN) friendly transport protocol. We describe our network emulation based test setup for these protocols and our evaluation of their performance for a few simple DTN scenarios. In particular we compare LTP-T with the other protocol being developed by the DTNRG, the bundle protocol (BP). Our results show that LTP-T can outperform the BP in some cases, though, as an overlay network protocol, the BP is more flexible in general.
{"title":"Evaluating LTP-T: A DTN-Friendly Transport Protocol","authors":"S. Farrell, V. Cahill","doi":"10.1109/IWSSC.2007.4409412","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409412","url":null,"abstract":"The Licklider transmission protocol (LTP) is a delay-tolerant point-to-point protocol being developed by the Delay-Tolerant Networking Research Group (DTNRG). LTP-Transport is an extension to LTP that provides end-to-end services and which is designed to be a generic Delay-Tolerant Network (DTN) friendly transport protocol. We describe our network emulation based test setup for these protocols and our evaluation of their performance for a few simple DTN scenarios. In particular we compare LTP-T with the other protocol being developed by the DTNRG, the bundle protocol (BP). Our results show that LTP-T can outperform the BP in some cases, though, as an overlay network protocol, the BP is more flexible in general.","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115360442","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}
Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409399
Zongyang Luo, Zhili Sun, H. Cruickshank
Due to the high bit error rate and varying propagation delay over satellite channels, transmission control protocol (TCP)'s performance degrades considerably. In this work, we propose a novel hop-by-hop link layer relay mechanism to enhance TCP throughput in multi-hop satellite IP networks, e.g., Low Earth Orbit (LEO) satellite networks, Medium Earth Orbit (MEO) satellite networks or hierarchical LEO/MEO satellite networks. Analytical methodology is used to estimate the performance of this mechanism first. Then simulations have been carried out to prove it. Numerical results show TCP throughput increases significantly when channel is in poor condition with link layer relay mechanism deployed.
{"title":"TCP Throughput Enhancement via Link Layer Relay in Multi-hop Satellite IP Networks","authors":"Zongyang Luo, Zhili Sun, H. Cruickshank","doi":"10.1109/IWSSC.2007.4409399","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409399","url":null,"abstract":"Due to the high bit error rate and varying propagation delay over satellite channels, transmission control protocol (TCP)'s performance degrades considerably. In this work, we propose a novel hop-by-hop link layer relay mechanism to enhance TCP throughput in multi-hop satellite IP networks, e.g., Low Earth Orbit (LEO) satellite networks, Medium Earth Orbit (MEO) satellite networks or hierarchical LEO/MEO satellite networks. Analytical methodology is used to estimate the performance of this mechanism first. Then simulations have been carried out to prove it. Numerical results show TCP throughput increases significantly when channel is in poor condition with link layer relay mechanism deployed.","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115315335","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}
Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409402
M. Luglio, F. Zampognaro, T. Morell, F. Vieira
Two aspects of DVB-RCS standard can worsen performance of TCP data connections: DAMA access scheme, since it introduces additional and variable delay to the already significant propagation delay and the adoption of Adaptive Coding on the return link to maximize bandwidth efficiency to face variable weather conditions, because it results in variable bandwidth allocation. Both aspects can severely impact TCP performance, especially for what concerns flow adaptation to varying channel conditions and channel usage efficiency. To optimize performance, in this paper cross-layer signaling among transport, MAC and physical layers of a DVB-RCS system is addressed. In particular MAC-TCP cross-layer is analyzed through the use of NS2 network simulator, showing the possible benefit in a DVB-RCS scenario.
{"title":"Joint DAMA-TCP protocol optimization through multiple cross layer interactions in DVB RCS scenario","authors":"M. Luglio, F. Zampognaro, T. Morell, F. Vieira","doi":"10.1109/IWSSC.2007.4409402","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409402","url":null,"abstract":"Two aspects of DVB-RCS standard can worsen performance of TCP data connections: DAMA access scheme, since it introduces additional and variable delay to the already significant propagation delay and the adoption of Adaptive Coding on the return link to maximize bandwidth efficiency to face variable weather conditions, because it results in variable bandwidth allocation. Both aspects can severely impact TCP performance, especially for what concerns flow adaptation to varying channel conditions and channel usage efficiency. To optimize performance, in this paper cross-layer signaling among transport, MAC and physical layers of a DVB-RCS system is addressed. In particular MAC-TCP cross-layer is analyzed through the use of NS2 network simulator, showing the possible benefit in a DVB-RCS scenario.","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122070422","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}
Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409431
C. Peoples, Gerard Parr, Bryan Scotney, A. Moore
This paper presents an approach to improve transmission success in delay-tolerant networks. The context- aware broker (CAB) grants networking autonomy when communicating in challenging environments, which suffer from conditions which are variable and exceed the limits for which terrestrial protocols were designed. Such environments currently require human intervention and the manual configuration of each communication - a seemingly simple decision of when to transmit becomes an issue in deep space due to planet movement. However, manual configuration is becoming unrealistic, given the scale on which communications occur. CAB automates the process by making intelligent decisions before transmission begins, and reconfigures as it progresses. It recognises the dynamic environments through which a transmission may pass and matches protocol capabilities with environmental constraints.
{"title":"A Reconfigurable Context-Aware Protocol Stack for Interplanetary Communication","authors":"C. Peoples, Gerard Parr, Bryan Scotney, A. Moore","doi":"10.1109/IWSSC.2007.4409431","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409431","url":null,"abstract":"This paper presents an approach to improve transmission success in delay-tolerant networks. The context- aware broker (CAB) grants networking autonomy when communicating in challenging environments, which suffer from conditions which are variable and exceed the limits for which terrestrial protocols were designed. Such environments currently require human intervention and the manual configuration of each communication - a seemingly simple decision of when to transmit becomes an issue in deep space due to planet movement. However, manual configuration is becoming unrealistic, given the scale on which communications occur. CAB automates the process by making intelligent decisions before transmission begins, and reconfigures as it progresses. It recognises the dynamic environments through which a transmission may pass and matches protocol capabilities with environmental constraints.","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130359616","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}
Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409430
J. Cantillo, J. Lacan, I. Buret, F. Arnal
The DVB-S2 standard has brought an unprecedented degree of novelty and flexibility in the way IP datagrams or other network level packets can be transmitted over DVB satellite links, with the introduction of an IP-friendly link layer -the continuous Generic Streams- and the adaptive combination of advanced error coding, modulation and spectrum management techniques. Recently approved by the DVB, the Generic Stream Encapsulation (GSE) used for carrying IP datagrams over DVB- S2 implements solutions stemmed from a design rationale quite different from the one behind IP encapsulation schemes over its predecessor DVB-S. This paper highlights GSE's original design choices under the perspective of DVB-S2's innovative features and possibilities.
{"title":"Design Issues for the Generic Stream Encapsulation (GSE) of IP Datagrams over DVB-S2","authors":"J. Cantillo, J. Lacan, I. Buret, F. Arnal","doi":"10.1109/IWSSC.2007.4409430","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409430","url":null,"abstract":"The DVB-S2 standard has brought an unprecedented degree of novelty and flexibility in the way IP datagrams or other network level packets can be transmitted over DVB satellite links, with the introduction of an IP-friendly link layer -the continuous Generic Streams- and the adaptive combination of advanced error coding, modulation and spectrum management techniques. Recently approved by the DVB, the Generic Stream Encapsulation (GSE) used for carrying IP datagrams over DVB- S2 implements solutions stemmed from a design rationale quite different from the one behind IP encapsulation schemes over its predecessor DVB-S. This paper highlights GSE's original design choices under the perspective of DVB-S2's innovative features and possibilities.","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114873754","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}
Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409395
S. Betti, V. Carrozzo, E. Duca
By the use of optical Erbium Doped Fiber Amplifiers (EDFA) in space communications it is possible to exploit the large capacity offered by the optical link, with a considerable reduction of transmitted power. A novel optical system for stratospheric communications is proposed. The link from a stratospheric platform to another one is carried out within the optical domain, thanks to the presence of a GEO that ensure the optical amplification. The optical preamplifier on the receiver end, is the key point for the system design: it must ensure the proper gain to the signal without introducing limitative Spontaneous Emission Noise.
{"title":"Use of Optical Amplifiers in GEO-HAP free space links","authors":"S. Betti, V. Carrozzo, E. Duca","doi":"10.1109/IWSSC.2007.4409395","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409395","url":null,"abstract":"By the use of optical Erbium Doped Fiber Amplifiers (EDFA) in space communications it is possible to exploit the large capacity offered by the optical link, with a considerable reduction of transmitted power. A novel optical system for stratospheric communications is proposed. The link from a stratospheric platform to another one is carried out within the optical domain, thanks to the presence of a GEO that ensure the optical amplification. The optical preamplifier on the receiver end, is the key point for the system design: it must ensure the proper gain to the signal without introducing limitative Spontaneous Emission Noise.","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117167147","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}
Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409398
A. Markhasin
The recent broadband satellite systems are based mainly on centralized low-meshed architecture. It predetermines very high traffics concentration. Such structure is not adequate in context of the traffic topology for rural, remote, and difficult for access (RRD) regions. Therefore the cost of these systems is unacceptably large for deployment of future mass broadband communications in RRD regions, which are characterized by poor terrestrial core infrastructures. This paper presents a novel concept of the space-based cost-effective networking technology of future 4G communications with radically distributed (grid-like), mesh, and scalable all-IP/ATM integrated satellite/mobile/wireless architecture for RRD areas. The proposed architecture based on novel QoS-oriented multi-functional access control technology to long-delay space medium (MFMAC), and also on MFMAC-based next generations of wireless ATM (ATM- MFMAC) and multi-protocol label switching (MPLS-MFMAC) technologies. This networking technology will allow an effective support and integration of mobile satellite and terrestrial cellullar, personal, WLAN, WiFi, WiMax, and other wireless systems of future generations 4G for such RRD territories, as BRIC (Brasilia, Russia, India, and China), Sea and Ocean's Archipelago, North Canada, Alaska, Central and South-East Asia, South America, Africa, Australia, etc.
{"title":"Ubiquitous and Multifunctional Mobile Satellite all-IP over DVB-S Networking Technology 4G with Radically Distributed Architecture for RRD Regions","authors":"A. Markhasin","doi":"10.1109/IWSSC.2007.4409398","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409398","url":null,"abstract":"The recent broadband satellite systems are based mainly on centralized low-meshed architecture. It predetermines very high traffics concentration. Such structure is not adequate in context of the traffic topology for rural, remote, and difficult for access (RRD) regions. Therefore the cost of these systems is unacceptably large for deployment of future mass broadband communications in RRD regions, which are characterized by poor terrestrial core infrastructures. This paper presents a novel concept of the space-based cost-effective networking technology of future 4G communications with radically distributed (grid-like), mesh, and scalable all-IP/ATM integrated satellite/mobile/wireless architecture for RRD areas. The proposed architecture based on novel QoS-oriented multi-functional access control technology to long-delay space medium (MFMAC), and also on MFMAC-based next generations of wireless ATM (ATM- MFMAC) and multi-protocol label switching (MPLS-MFMAC) technologies. This networking technology will allow an effective support and integration of mobile satellite and terrestrial cellullar, personal, WLAN, WiFi, WiMax, and other wireless systems of future generations 4G for such RRD territories, as BRIC (Brasilia, Russia, India, and China), Sea and Ocean's Archipelago, North Canada, Alaska, Central and South-East Asia, South America, Africa, Australia, etc.","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125040153","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}
Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409380
K. Liolis, A. Bolea-Alamañac, C. Morlet, A. Ginesi
This paper addresses the applicability of fade mitigation techniques (FMTs) to mobile DVB-S2/RCS based broadband interactive satellite systems. Emphasis is put on the railway scenario, where quite a few pilot projects and demonstration initiatives have already been launched and even (pre-) commercial activities have already commenced. A useful methodology to transform rain fading statistics from a fixed to a mobile satellite communication system is described. Particular attention is paid to the second order rain fading statistics and, specifically, to the rain fade slope, whose accurate knowledge is essential to the design and performance of the FMT control loop. The FMT control loop margin required due to mobility is estimated in line-of-sight (LOS) conditions for different train speeds and rain attenuation levels. In addition, the impact of non-LOS effects, such as long blockages due to tunnels, on the performance of FMT control loop is examined and the possible use of short-term rain fade prediction methods is analyzed. Numerical results obtained through computer simulations are provided and useful conclusions are drawn.
{"title":"Applicability of Fade Mitigation Techniques to Mobile DVB-S2/RCS Satellite Systems: Accent on Railway Scenario","authors":"K. Liolis, A. Bolea-Alamañac, C. Morlet, A. Ginesi","doi":"10.1109/IWSSC.2007.4409380","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409380","url":null,"abstract":"This paper addresses the applicability of fade mitigation techniques (FMTs) to mobile DVB-S2/RCS based broadband interactive satellite systems. Emphasis is put on the railway scenario, where quite a few pilot projects and demonstration initiatives have already been launched and even (pre-) commercial activities have already commenced. A useful methodology to transform rain fading statistics from a fixed to a mobile satellite communication system is described. Particular attention is paid to the second order rain fading statistics and, specifically, to the rain fade slope, whose accurate knowledge is essential to the design and performance of the FMT control loop. The FMT control loop margin required due to mobility is estimated in line-of-sight (LOS) conditions for different train speeds and rain attenuation levels. In addition, the impact of non-LOS effects, such as long blockages due to tunnels, on the performance of FMT control loop is examined and the possible use of short-term rain fade prediction methods is analyzed. Numerical results obtained through computer simulations are provided and useful conclusions are drawn.","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"90 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134161736","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}
Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409417
T. Pecorella, R. Fantacci, C. Lasagni, L. Rosati, P. Todorova
In this paper we address different downlink dynamic bandwidth allocation (DBA) techniques in a GEO stationary (GEO) satellite communication network. The goal is designing a low complexity system which can adapt to the terminal traffic requests. We investigate a possible way to increase the performance of the system by means of an interaction between on-board switching fabric (SF) and beam hopping (BH). We consider a system where an adaptive process provides uplink DBA, whereas a BH module works as downlink bandwidth allocator. Specifically, the BH module determines the number of carriers to be allocated to each downlink spot-beam on the basis of the traffic queues at the input of the SF. Simulation results show that the interaction between SF and BH is a good candidate to increase the performance of the system, since it allows reducing queue sizes in the satellite.
{"title":"Study and Implementation of Switching and Beam-Hopping Tchniques in Satellites with On Board Processing","authors":"T. Pecorella, R. Fantacci, C. Lasagni, L. Rosati, P. Todorova","doi":"10.1109/IWSSC.2007.4409417","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409417","url":null,"abstract":"In this paper we address different downlink dynamic bandwidth allocation (DBA) techniques in a GEO stationary (GEO) satellite communication network. The goal is designing a low complexity system which can adapt to the terminal traffic requests. We investigate a possible way to increase the performance of the system by means of an interaction between on-board switching fabric (SF) and beam hopping (BH). We consider a system where an adaptive process provides uplink DBA, whereas a BH module works as downlink bandwidth allocator. Specifically, the BH module determines the number of carriers to be allocated to each downlink spot-beam on the basis of the traffic queues at the input of the SF. Simulation results show that the interaction between SF and BH is a good candidate to increase the performance of the system, since it allows reducing queue sizes in the satellite.","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133269958","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}
Pub Date : 2007-12-26DOI: 10.1109/IWSSC.2007.4409392
V. M. Kapinas, P. Horváth, G. Karagiannidis, I. Frigyes
This paper deals with some of the problems arising in multiple-input multiple-output (MIMO) antenna systems, when the receiver's clock is not synchronized to the modulator. Considering that the spatial diversity is exploited through quasi-orthogonal space-time block codes (QOSTBC), we examine the influence of the remaining timing offset on the performance of the system, after coarse timing acquisition has been carried out at the receiver. Specifically, by utilizing the statistical properties of the channel paths and simulating the time error as a uniformly distributed random variable, we show that the average trace of the diversity gain matrix (DGM) undergoes a decrease with respect to the ideal case of zero intersymbol interference (ISI).
{"title":"Time Synchronization Issues for Quasi-Orthogonal Space-Time Block Codes","authors":"V. M. Kapinas, P. Horváth, G. Karagiannidis, I. Frigyes","doi":"10.1109/IWSSC.2007.4409392","DOIUrl":"https://doi.org/10.1109/IWSSC.2007.4409392","url":null,"abstract":"This paper deals with some of the problems arising in multiple-input multiple-output (MIMO) antenna systems, when the receiver's clock is not synchronized to the modulator. Considering that the spatial diversity is exploited through quasi-orthogonal space-time block codes (QOSTBC), we examine the influence of the remaining timing offset on the performance of the system, after coarse timing acquisition has been carried out at the receiver. Specifically, by utilizing the statistical properties of the channel paths and simulating the time error as a uniformly distributed random variable, we show that the average trace of the diversity gain matrix (DGM) undergoes a decrease with respect to the ideal case of zero intersymbol interference (ISI).","PeriodicalId":286578,"journal":{"name":"2007 International Workshop on Satellite and Space Communications","volume":"21 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133447580","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}
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