Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019)最新文献_第5页

Optical communication experiment with microsatellite body-pointing using VSOTA on RISESAT RISESAT上基于VSOTA的微卫星体指向光通信实验

Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019) Pub Date : 2021-01-05 DOI: 10.1049/pbte095e_ch41

引用次数: 3

Antenna pattern evaluation formed by reconfigurable antennas with the configuration of an array-fed reflector 阵列馈电反射器配置的可重构天线形成的天线方向图评估

Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019) Pub Date : 2021-01-05 DOI: 10.1049/pbte095e_ch26

引用次数: 1

Demonstration of high-speed pixelated acquisition and tracking system for optical intersatellite links 光学星间链路高速像素化采集与跟踪系统的演示

Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019) Pub Date : 2021-01-05 DOI: 10.1049/pbte095e_ch21

引用次数: 0

Channel capacity analysis of satellite MIMO system depending on the orbital altitude 卫星MIMO系统随轨道高度变化的信道容量分析

Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019) Pub Date : 2021-01-05 DOI: 10.1049/pbte095e_ch64

引用次数: 2

Information rate and quality of service guarantees for end-to-end data flows in an NGSO satellite network NGSO卫星网络端到端数据流的信息速率和服务质量保证

Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019) Pub Date : 2021-01-05 DOI: 10.1049/pbte095e_ch57

引用次数: 1

Spectrum prediction and interference detection for satellite communications 卫星通信频谱预测与干扰检测

Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019) Pub Date : 2019-12-01 DOI: 10.1049/pbte095e_ch63

Lissy Pellaco, N. Singh, Joakim Jald'en

{"title":"Spectrum prediction and interference detection for satellite communications","authors":"Lissy Pellaco, N. Singh, Joakim Jald'en","doi":"10.1049/pbte095e_ch63","DOIUrl":"https://doi.org/10.1049/pbte095e_ch63","url":null,"abstract":"Spectrum monitoring and interference detection are crucial for the satellite service performance and the revenue of SatCom operators. Interference is one of the major causes of service degradation and deficient operational efficiency. Moreover, the satellite spectrum is becoming more crowded, as more satellites are being launched for different applications. This increases the risk of interference, which causes anomalies in the received signal, and mandates the adoption of techniques that can enable the automatic and real-time detection of such anomalies as a first step towards interference mitigation and suppression. In this paper, we present a Machine Learning (ML)-based approach able to guarantee a real-time and automatic detection of both short-term and long-term interference in the spectrum of the received signal at the base station. The proposed approach can localize the interference both in time and in frequency and is universally applicable across a discrete set of different signal spectra. We present experimental results obtained by applying our method to real spectrum data from the Swedish Space Corporation. We also compare our ML-based approach to a model-based approach applied to the same spectrum data and used as a realistic baseline. Experimental results show that our method is a more reliable interference detector.","PeriodicalId":105932,"journal":{"name":"Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133741409","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: 6

Effects of differential oscillator phase noise in precoding performance 差分振荡器相位噪声对预编码性能的影响

Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019) Pub Date : 1900-01-01 DOI: 10.1049/PBTE095E_CH55

L. Marrero, J. C. Merlano-Duncan, J. Querol, S. Chatzinotas, Adriano Camps, B. Ottersten

{"title":"Effects of differential oscillator phase noise in precoding performance","authors":"L. Marrero, J. C. Merlano-Duncan, J. Querol, S. Chatzinotas, Adriano Camps, B. Ottersten","doi":"10.1049/PBTE095E_CH55","DOIUrl":"https://doi.org/10.1049/PBTE095E_CH55","url":null,"abstract":"Satellite precoding is a promising technique to meet the target data rates of the future high throughput satellite systems and the costs per bit as required by 5G applications and networks, but it requires strict synchronization among the transmitted waveforms, in addition to accurate channel state information. Most of the published work about this topic consider ideal oscillators, but in practice, the output of an oscillator is not a single spectral line at the nominal frequency. This chapter proposes a model for the oscillator phase noise and analyzes the resulting received signal to interference plus noise ratio (SNIR) in a satellite communication system using precoding. Simulations of a communication satellite system with a two-beam transponder and two receivers were performed to compute the effective SNIR. This work uses a simulator which also considers practical impairments such as time misalignment, errors in the channel state information, interference, thermal noise, and phase noise masks for satellite oscillators. The precoding methods used for the analysis are zero forcing (ZF) and minimum mean square error (MMSE). The obtained results prove that there is a degradation in the performance due to the use of independent oscillators but this effect is compensated by the precoding matrix.","PeriodicalId":105932,"journal":{"name":"Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123821686","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