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

{"title":"A Design Method of Cognitive Overlay Links for Satellite Communications","authors":"Luciano Barros Cardoso da Silva, Tarik Benaddi, L. Franck","doi":"10.1109/ASMS-SPSC.2018.8510739","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510739","url":null,"abstract":"In this paper, we present a method to design cognitive overlay links for satellite communications, in order to allow the primary and the cognitive users to transmit concurrently while using efficiently the available power resources. By means of trellis shaping based dirty paper coding (DPC) and superposition techniques, numerous schemes are investigated in various realistic scenarios, and different trade-offs between power efficiency vs complexity are made. By simulations, we first show that we are able to design schemes where the primary user bit error rate (BER) is maintained as in the absence of the cognitive user interference. Secondly, thanks to trellis precoding and an appropriate constellation expansion, we show that the BER of the cognitive user can be made within 1dB of corresponding the Gaussian channel BER.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"399 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":"114926655","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}

{"title":"Feasibility of Energy Management Techniques for Ultra-low Power M2M SatCom Terminals","authors":"N. Alagha, J. Alonso-Zarate, M. Andrenacci, Alessandro Biason, L. Blanco, Ivan Chesi, D. Tarchi, M. Zorzi","doi":"10.1109/ASMS-SPSC.2018.8510748","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510748","url":null,"abstract":"The request for the provision of services relying on Machine to Machine (M2M) communications have increased a lot over the last years. This has led to the introduction of M2M communications also in the SatCom area. In this context, the design of ultra-low power terminals becomes indispensable. In this paper, a feasibility study for assessing the implementation of an innovative energy efficient technique for ultra-low power M2M SatCom terminals is proposed. By Ieveraging on the E-SSA (Enhanced Spread Spectrum ALOHA) protocol, the newly proposed technique jointly exploits the use of multiple Spreading Factors (SFs) for transmission together with a smart transmission manager which is able optimize the use of energy harvesting by dynamically deciding when and how to transmit data. The proposed solution has been tested in different SatCom scenarios, demonstrating its effectiveness in terms of overall throughput and energy consumption.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"2 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":"125808906","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}

{"title":"ASMS/SPSC 2018 Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop","authors":"","doi":"10.1109/asms-spsc.2018.8510714","DOIUrl":"https://doi.org/10.1109/asms-spsc.2018.8510714","url":null,"abstract":"","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"6 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":"123805685","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}

{"title":"Low Complexity Detectors for Spread Spectrum Receivers","authors":"G. Gallinaro, R. Romanato, S. Titomanlio, E. Tirrò, M. Andrenacci, Ivan Chesi, Agostino Isca, N. Alagha, S. Cioni","doi":"10.1109/ASMS-SPSC.2018.8510734","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510734","url":null,"abstract":"In the context of the recent solutions proposed in the 3GPP for standardization group on NOMA (Non-Orthogonal Multiple Access) schemes, this paper discusses different approaches for implementing an approximate spread spectrum MMSE (Minimum Mean Square Error) detector. In addition, the implication of such detectors on the signal design is presented.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"147 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":"123821176","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}

{"title":"DTN Performance in Complex Deep-Space Networks","authors":"Nicola Alessi, C. Caini, Tomaso de Cola, Sebastian Martin, Jeremy Pierce-Mayer","doi":"10.1109/ASMS-SPSC.2018.8510736","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510736","url":null,"abstract":"The Delay-lDisruption Tolerant Networking (DTN) architecture has long been analyzed in terms of the Bundle Protocol (BP) and the Licklider Transmission Protocols (LTP) performance, when used in deep space environments. The research conducted so far focused mostly on the performance of specific protocols under simplified network conditions, thus missing some key aspects of real space communication operations. This paper tries to bridge this gap by providing a more exhaustive analysis of DTN performance in deep-space environments, and considers the interaction between routing and the overall data delivery delay achieved by thejoint use of the BP and LTP protocols. An extensive experiment campaign has been performed on a virtualized testbed based on ION software to collect results in complex scenarios and translate them into significant observations about space operations.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"80 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":"134222050","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}

{"title":"Link Adaptation and Carriers Detection Errors in Multibeam Satellite Systems with Linear Precoding","authors":"Anxo Tato, S. Andrenacci, S. Chatzinotas, C. Mosquera","doi":"10.1109/ASMS-SPSC.2018.8510749","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510749","url":null,"abstract":"The application of linear precoding at the gateway side enables broadband multibeam satellite systems to use more aggressive frequency reuse patterns increasing the overall capacity of future High Throughput Satellites (HTS). However, although some previous works about precoding consider imperfect CSIT (Chanel State Information at the Transmitter) adding some CSI estimation errors, that is not the main cause of CSI degradation. In practice, receivers can only detect and estimate a few coefficients of the CSI vector being the other nullified, replaced by zeros. This introduces errors in the SINR calculation by the gateway that lead to the assignment of Modulation and Coding Schemes (MCS) over the decoding possibilities of the users, increasing the rate of erroneous frames. In this work, the errors in the SINR calculation caused by the nullification of the CSI are analyzing statistically and geographically using a radiation diagram of 245 beams over Europe. Furthermore, a solution based on a link adaptation algorithm with a per user adaptive margin is proposed, helping to achieve the QEF (Quasi-error Free) target of DVB-S2X systems.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"1 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":"128226472","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}

{"title":"Resource Allocation Approach for Differential Doppler Reduction in NB-IoT over LEO Satellite","authors":"O. Kodheli, S. Andrenacci, N. Maturo, S. Chatzinotas, F. Zimmer","doi":"10.1109/ASMS-SPSC.2018.8510724","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510724","url":null,"abstract":"Internet of things (IoT) over satellite is an attractive system architecture which has been proposed as a key-enabling technology, to extend the coverage in remote areas (e.g., desert, ocean, forest, etc), particularly where a terrestrial network is impossible or impractical to reach. One of the most promising technologies that fit the IoT vision of low-power, wide area networks (LPWAN) is the narrowband IoT (NB-IoT). While low earth orbit (LEO) satellites are favourable because of their lower round trip time (RTT) and lower propagation loss in the communication link, they come up with a significantly increased Doppler shift. In our NB-IoT over LEO satellite architecture, we identify the problem of high differential Doppler among channels of different users on Earth, which leads to the performance degradation of our system. In this paper, we propose a resource allocation approach in order to reduce the high values of differential Doppler under the maximum value supported by the standard itself.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"79 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":"124948100","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}

{"title":"Sparsity-Aided Low-Implementation cost based On-Board beamforming Design for High Throughput Satellite Systems","authors":"Ashok Bandi, Vahid Joroughi, B. Shankar, J. Grotz, B. Ottersten","doi":"10.1109/ASMS-SPSC.2018.8510731","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510731","url":null,"abstract":"Soaring demand for high data rate services entails high throughput satellite (HTS) systems with multi-beam architecture, and full frequency and time resources reuse. However, interference among simultaneously served users is the fundamental factor that is needed to be addressed before enacting HTS system with this architecture. Beamforming has been proposed as a potential technique to mitigate the interference in the literature. Different types of beamforming techniques proposed including beamforming at payload (on-board), beamforming at a gateway and hybrid beamforming. On-board beamforming prevails over other techniques due to its advantages—channel information at payload is more recent than gateway and sharing overhead of channel and symbols across multiple gateways is reduced in a multi-gateway architecture to name a few. Despite these advantages, beamforming at the gateway is usually preferred due to the heavy processing cost incurred in beamforming. Beamforming processing cost can be split into two factors: design cost and implementation cost. While design cost accounts for the cost involved in the design of beamformer, implementation cost accounts for multiplications and additions involved in applying calculated beamformer coefficients to data symbols. Through our study, we noticed that the major contributing factor to processing cost is the implementation cost which accumulates for every data symbol rather than design cost which is incurred only once per channel coherence time which usually relatively longer than many data symbols. Furthermore, the implementation cost is dominated by the multiplications involved. Hence, in this work, we address the issue of implementation cost from the perspective of on-board multiplications. We formulate the problem of minimizing on-board implementation cost (multiplications) of a beamformer as a second-order cone programming problem with the help of $ell _{1}$ norm constraint on the beamforming matrix subjected to a minimum signal-to-interference-noise ratio of simultaneously served users and classical total power constraint. We show the efficacy of our algorithm over the traditional power minimization method through Monte-Carlo simulations.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"119 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":"133526917","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}

{"title":"ASMS/SPSC 2018 Index","authors":"","doi":"10.1109/asms-spsc.2018.8510745","DOIUrl":"https://doi.org/10.1109/asms-spsc.2018.8510745","url":null,"abstract":"","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"20 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":"114688133","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}

{"title":"Performance Bounds of a Single LEO Satellite Providing Geolocation of an RF Emitter","authors":"P. Ellis, F. Dowla","doi":"10.1109/ASMS-SPSC.2018.8510737","DOIUrl":"https://doi.org/10.1109/ASMS-SPSC.2018.8510737","url":null,"abstract":"The recursive Posterior Cramer Rao Bound (rPCRB) is computed for a Low Earth Orbit (LEO) satellite providing geolocation estimates of an RF emitter. This bound takes no assumptions on the geometry of the situation, allows geolocation parameters to vary over time, and can be meaning-fully compared with nonlinear estimation algorithm performance. A stationary emitter is assumed, it’s only velocity coming from the earth’s rotation, which is modeled and estimated. The measurements are instantaneous frequencies corrupted with AWGN noise. Previous relevant literature uses simplified geometric assumptions and the traditional Cramer Rao Bound (CRB), producing reasonable results only in benign and select scenarios. Here, more realistic performance bounds are given and the potential of geolocating emitters in ’search and rescue’ scenarios is demonstrated. The performance bounds are computed for various scenarios and compared with an Unscented Kalman Filter using estimated instantaneous frequencies from synthesized data.","PeriodicalId":362263,"journal":{"name":"2018 9th Advanced Satellite Multimedia Systems Conference and the 15th Signal Processing for Space Communications Workshop (ASMS/SPSC)","volume":"1 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":"131307218","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}