Pub Date : 2009-10-13DOI: 10.1109/IWSSC.2009.5286382
N. Chuberre
{"title":"PhD session 2 (room A+B) radio resource management I","authors":"N. Chuberre","doi":"10.1109/IWSSC.2009.5286382","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286382","url":null,"abstract":"","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116679793","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286337
A. Markhasin
The key challenges of the QoS-oriented satellite MAC technology are conditioned mainly by long-delay space medium. They represent phenomena of MAC's performance degradation (“time barrier”) and dynamical instability (“dynamic barrier”) which appear when the propagation time increases. The delay-tolerant MACs should guarantee an effective overcoming of both barriers. We showed that the delay-tolerant abilities depend on the processing algorithm of MAC commands. The serial processing algorithm of the MAC commands (SCP) is characterized as delay-intolerant. The parallel commands' processing algorithm (PCP) provides the time tolerance, i.e., effective overcoming of the time barrier, mainly. The PCP algorithm is used by the MAC reservation protocols with fixed, or pre-defined, superframe formats (RFS). The parallel-conveyor commands' processing algorithm (CCP) guarantees the full delay tolerance abilities. The CCP algorithm is used by MAC reservation protocols with adaptive frames formats (RAF), which adjust to a current data flows. This paper presents the numeric-analytical method and performance analysis of the delay-tolerant and fully mesh, i.e., multipoint-to-multipoint (MPMP) mode, satellite MAC reservation protocols with distributed dynamic control of the quality of services (QoS). The comparative analysis of the named above MAC reservation schemas is also given.
{"title":"Performance analysis of the delay-tolerant satellite distributed MAC reservation protocols","authors":"A. Markhasin","doi":"10.1109/IWSSC.2009.5286337","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286337","url":null,"abstract":"The key challenges of the QoS-oriented satellite MAC technology are conditioned mainly by long-delay space medium. They represent phenomena of MAC's performance degradation (“time barrier”) and dynamical instability (“dynamic barrier”) which appear when the propagation time increases. The delay-tolerant MACs should guarantee an effective overcoming of both barriers. We showed that the delay-tolerant abilities depend on the processing algorithm of MAC commands. The serial processing algorithm of the MAC commands (SCP) is characterized as delay-intolerant. The parallel commands' processing algorithm (PCP) provides the time tolerance, i.e., effective overcoming of the time barrier, mainly. The PCP algorithm is used by the MAC reservation protocols with fixed, or pre-defined, superframe formats (RFS). The parallel-conveyor commands' processing algorithm (CCP) guarantees the full delay tolerance abilities. The CCP algorithm is used by MAC reservation protocols with adaptive frames formats (RAF), which adjust to a current data flows. This paper presents the numeric-analytical method and performance analysis of the delay-tolerant and fully mesh, i.e., multipoint-to-multipoint (MPMP) mode, satellite MAC reservation protocols with distributed dynamic control of the quality of services (QoS). The comparative analysis of the named above MAC reservation schemas is also given.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126911125","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286430
T. Aman, T. Yamazato, M. Katayama
The recent development of large aperture on-board multi-beam antennas enables a small-size, low-powered and cellular phone like hand-held terminal as a satellite earth terminal. A single mobile terminal can communicate to both mobile satellite systems and terrestrial systems depend upon his location, QoS and availability of resources among satellite and terrestrial communication systems. In this paper, we propose a new traffic prediction scheme for the integrated satellite/terrestrial frequency sharing mobile communication system. The system shares a common frequency bandwidth in order to enhance the total capacity by a dynamic bandwidth allocation. A key for this allocation depends on a traffic prediction scheme of a few hundreds of terrestrial cells under a footprint of a satellite with a large aperture onboard multi-beam antennas. We propose three traffic predictors based on neural networks for dynamic resource allocation. The performances of the proposed schemes are evaluated in terms of the Relative Traffic Prediction Error and Maximum Traffic Prediction Error by the computer simulation. For the evaluation, we adopt the actual traffic statistic published by Ministry of Internal Affairs and Communications of Japan with population density of terrestrial cells based on the actual population of Aichi, Japan. As results, average traffic prediction error of less than 0.25 is achieved for the prediction interval of one hour, enough for dynamic resource allocation.
{"title":"Traffic prediction scheme for resource assignment of satellite/terrestrial frequency sharing mobile communication system","authors":"T. Aman, T. Yamazato, M. Katayama","doi":"10.1109/IWSSC.2009.5286430","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286430","url":null,"abstract":"The recent development of large aperture on-board multi-beam antennas enables a small-size, low-powered and cellular phone like hand-held terminal as a satellite earth terminal. A single mobile terminal can communicate to both mobile satellite systems and terrestrial systems depend upon his location, QoS and availability of resources among satellite and terrestrial communication systems. In this paper, we propose a new traffic prediction scheme for the integrated satellite/terrestrial frequency sharing mobile communication system. The system shares a common frequency bandwidth in order to enhance the total capacity by a dynamic bandwidth allocation. A key for this allocation depends on a traffic prediction scheme of a few hundreds of terrestrial cells under a footprint of a satellite with a large aperture onboard multi-beam antennas. We propose three traffic predictors based on neural networks for dynamic resource allocation. The performances of the proposed schemes are evaluated in terms of the Relative Traffic Prediction Error and Maximum Traffic Prediction Error by the computer simulation. For the evaluation, we adopt the actual traffic statistic published by Ministry of Internal Affairs and Communications of Japan with population density of terrestrial cells based on the actual population of Aichi, Japan. As results, average traffic prediction error of less than 0.25 is achieved for the prediction interval of one hour, enough for dynamic resource allocation.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127731597","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286433
M. Flohberger, W. Gappmair, S. Cioni
Carrier-blind and non-data-aided (NDA) feedforward solutions for symbol timing recovery are particularly important for initial acquisition in burst modems; the Oerder and Meyr (O&M) algorithm is perhaps the most prominent example in this respect. Since usually operated with an oversampling rate of four, alternatives using only two samples per symbol have been suggested in the open literature. On the other hand, Moeneclaey and Batsele introduced an error detector for blind NDA recovery in feedback loops, based on only one sample per symbol. In the current paper, it is shown that this approach can be successfully applied to a feedforward solution. In this context, two estimator variants are developed exhibiting no self-noise effect for M-ary PSK schemes, whereas it turns out that this does not hold true for nonconstant modulus constellations.
{"title":"Two iterative algorithms for blind symbol timing estimation of M-PSK signals","authors":"M. Flohberger, W. Gappmair, S. Cioni","doi":"10.1109/IWSSC.2009.5286433","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286433","url":null,"abstract":"Carrier-blind and non-data-aided (NDA) feedforward solutions for symbol timing recovery are particularly important for initial acquisition in burst modems; the Oerder and Meyr (O&M) algorithm is perhaps the most prominent example in this respect. Since usually operated with an oversampling rate of four, alternatives using only two samples per symbol have been suggested in the open literature. On the other hand, Moeneclaey and Batsele introduced an error detector for blind NDA recovery in feedback loops, based on only one sample per symbol. In the current paper, it is shown that this approach can be successfully applied to a feedforward solution. In this context, two estimator variants are developed exhibiting no self-noise effect for M-ary PSK schemes, whereas it turns out that this does not hold true for nonconstant modulus constellations.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126960936","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 : 2009-10-13DOI: 10.1109/IWSSC.2009.5286364
M. S. Awan, Marzuki, E. Leitgeb, B. Hillbrand, F. Nadeem, M. S. Khan
Free-space Optics (FSO) or optical wireless offers huge unlicensed bandwidth and is able to deliver the required bandwidth needed in next ten years for the next generation networks (NGN). Moreover, an increasing number of military and commercial access systems rely critically on the propagation of optical energy through the atmospheric free-space. As a result the need for predictable estimates of optical attenuation in low visibility conditions is steadily increasing, especially for fog, rain, clouds and snowfall. Cloud attenuations are the least observed/measured in case of free-space optical wireless links. We investigate here the influence of cloud attenuations on the performance of optical wireless links.
{"title":"Cloud attenuations for free-space optical links","authors":"M. S. Awan, Marzuki, E. Leitgeb, B. Hillbrand, F. Nadeem, M. S. Khan","doi":"10.1109/IWSSC.2009.5286364","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286364","url":null,"abstract":"Free-space Optics (FSO) or optical wireless offers huge unlicensed bandwidth and is able to deliver the required bandwidth needed in next ten years for the next generation networks (NGN). Moreover, an increasing number of military and commercial access systems rely critically on the propagation of optical energy through the atmospheric free-space. As a result the need for predictable estimates of optical attenuation in low visibility conditions is steadily increasing, especially for fog, rain, clouds and snowfall. Cloud attenuations are the least observed/measured in case of free-space optical wireless links. We investigate here the influence of cloud attenuations on the performance of optical wireless links.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115091858","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 : 2009-09-10DOI: 10.1109/IWSSC.2009.5286424
M. Berioli, R. Mort, H. Cruickshank
The approach currently being taken by ETSI (BSM) to standardisation for Performance Management (and in particular monitoring) is described. This paper describes parameters, instruments and methods that can be used to manage a BSM sub-network. The final objective is to arrive at a consensus for a standard on this subject.
{"title":"Performance Management in Broadband Satellite Multimedia networks","authors":"M. Berioli, R. Mort, H. Cruickshank","doi":"10.1109/IWSSC.2009.5286424","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286424","url":null,"abstract":"The approach currently being taken by ETSI (BSM) to standardisation for Performance Management (and in particular monitoring) is described. This paper describes parameters, instruments and methods that can be used to manage a BSM sub-network. The final objective is to arrive at a consensus for a standard on this subject.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121974656","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 : 2009-09-01DOI: 10.1109/IWSSC.2009.5286407
G. Giambene
{"title":"Poster session (room ground-level corridors and coffee break area)","authors":"G. Giambene","doi":"10.1109/IWSSC.2009.5286407","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286407","url":null,"abstract":"","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122054656","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 : 2009-09-01DOI: 10.1109/IWSSC.2009.5286425
Mathiopoulos Panayiotis
{"title":"Regular session 2 (room A+B) coding and modulation II","authors":"Mathiopoulos Panayiotis","doi":"10.1109/IWSSC.2009.5286425","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286425","url":null,"abstract":"","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128301816","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 : 2009-09-01DOI: 10.1109/IWSSC.2009.5286367
O. Koudelka
{"title":"Special session 4 (room 4) interplanetary communications","authors":"O. Koudelka","doi":"10.1109/IWSSC.2009.5286367","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286367","url":null,"abstract":"","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122538246","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 : 2009-09-01DOI: 10.1109/IWSSC.2009.5286408
V. Fogliati
ISICOM (Integrated Space Infrastructure for global Communications) is the ISI proposal for an advanced European Satellite Communication System fully integrated with the Global Communication Networks of the Future and able to complement Galileo and GMES by adding important value and functionalities. The ISICOM system has been conceived in order to meet the global communications requirements of European and National institutional users, also being able to stimulate the growing of business applications in selected domains.
{"title":"Basic pillars for the ISICOM system development","authors":"V. Fogliati","doi":"10.1109/IWSSC.2009.5286408","DOIUrl":"https://doi.org/10.1109/IWSSC.2009.5286408","url":null,"abstract":"ISICOM (Integrated Space Infrastructure for global Communications) is the ISI proposal for an advanced European Satellite Communication System fully integrated with the Global Communication Networks of the Future and able to complement Galileo and GMES by adding important value and functionalities. The ISICOM system has been conceived in order to meet the global communications requirements of European and National institutional users, also being able to stimulate the growing of business applications in selected domains.","PeriodicalId":137431,"journal":{"name":"2009 International Workshop on Satellite and Space Communications","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126883713","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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