Advances in Communications Satellite Systems: Proceedings of the 36th International Communications Satellite Systems Conference (ICSSC-2018)

Description

The International Communications Satellite Systems Conference (ICSSC) is one of the most influential technical conferences in the field. The 36th edition was held in October 2018 in Niagara Falls, Canada. These proceedings present a broad spectrum of space communications topics from the conference, from the evolution of GEO from traditional area coverage to Ultra High Throughput Satellites (UHTS), the growing number of mega constellations expected to enter service in the next decade, navigation applications such as vehicle autonomy, wideband data backhaul from scientific and remote sensing payloads in LEO, and the extension of the 5G network to near earth, lunar and deep space environments in support of human exploration. Cover Contents Preface and Acknowledgements Author Biographies Section 1 – Multi-beam Satellite Systems 1 Symbol vs block level precoding in multi-beam satellite systems Introduction System Model and Problem Statement System Model Beam Pattern Over Europe Problem Statement Precoding Techniques Block-Level Precoding Symbol Level Precoding Complexity Comparision Simulation Results Conclusions and Further Research Acknowledgments References 2 Hardware Demonstration of Precoded Communications in Multi-Beam UHTS Introduction Hardware Demonstrator System Model Gateway Channel Emulator User Terminal Resource Occupation in FPGAs Conclusion Acknowledgments References 3 On the capacity of asynchronous cooperative NOMA in multibeam satellite systems Introduction System Model Channel Model Proposed Cooperative NOMA Gaussian Multi-Access Channels with ISI Two-User Channel with H(w) … G(w) Two-User Channel with H(w) = G(w) Simulation Results Asynchronous Multi-Access Channel: Capacity Region Asynchronous MAC Asynchronous NOMA-Single Content Transmission Simulation Results Conclusion Acknowledgments References 4 Overlapping clustering for beam-hopping systems Introduction Related research works Frequency efficiency improvements for HTS Signalling aspects Availability and a number of gateways Beam hopping systems Efficiency degradation of conventional method Proposed overlapping clustering method Performance evaluation Simulation settings Evaluation results Conclusion References 5 Adjacent beams resource sharing to serve hot spots: a rate-splitting approach Introduction System Model Hot-spot Scenario Satellite payload Non-Coherent Rate-Splitting ( NCRS) Rate Optimization Competitive techniques Partial CSIT Full CSIT Numerical Results Conclusions Acknowledgments References Section 2 – Cognitive Communications and Propagation Channel Optimization 6 Time Correlation Used to Improve Time Diversity Gain of Rainfall Prediction Introduction Data Description Methodology and Results Improvement of Diversity Gain Formulas Conclusion References 7 Protection of the Mobile Station from the Interference by Maritime Earth Station in Motion in the 28 GHZ Band Introduction Interference Scenario System Characteristics Results Conclusions Acknowledgments References 8 Rateless codes for satellite systems over rain fading channels Introduction Satellite system with ACM Proposed scheme Operational principle Joint soft-iterative decoding Simulation results Simulation model Performance comparison with simulation results Conclusion Acknowledgments References 9 Channel States Information based Spectrum Sensing Algorithm in Satellite Cognitive Communication Networks Introduction System Model And Cognitive Scenario Cognitive Scenario System Model Channel States Information Based Spectrum Sensing Algorithm Algorithm Performance Verification And Discussion Conclusion Acknowledgments References 10 Wideband nonlinearities correction in digital payloads channels with parallel architectures Introduction Parallel HW implementation Methodology Many-Core DSP Architecture Software defined Volterra filter design Conclusions and Future Works References Section 3 – Flexible High Throughput Satellite Systems and Interference Mitigation Techniques 11 Modifications to Multi-beam Systems for DRRM Introduction Current HTS System Architecture HTS System for DRRM Communications Transponder Modification Sample Digital Analysis Filter Bank Design Conclusions References 12 Adaptive Resources Allocation for Flexible Payload enabling VHTS systems: Methodology and Architecture Introduction Problem Definition Methodology for Adaptive Resource Allocation Study Cases Coverage Optimization Adaptive Resource Allocation Comparison Payload Architecture Conclusion Acknowledgments References 13 Adaptive Onboard Compensation of Non-Linear HPAsand Imperfect Butler Matrices in Multiport Amplifiers for High Throughput Satellites Introduction Multiport Amplifier Architecture Conventional linear MPA model Practical issues with conventional MPAs Proposed Two-Step Method Simulation results PSD Analysis BER analysis Conclusion References 14 Distributed precoding for multiple satellite systems with overlapping coverage areas Introduction Multibeam satellite systems: beyond state-of-the-art Multiple satellites systems: benefits and challenges Motivation Signal model and problem formulation in MS-COV architecture Precoding scheme in MS-COV configuration CSI feedback mechanism Feed selection method in MS-COV Numerical Results Simulation Setup Results Conclusion Acknowledgments References 15 Productized Multicarrier Predistortion Total Throughput Gainsaround 20% over Linearized Channels in True Customer Use Cases Introduction Assessed use cases Satellite parameters Waveform parameters Measuring methodology Measurement setup in the lab Measurement setup over satellite Gain measurement Predistortion gain leverages in a large throughput gain in an unbalanced carrier scenario Numerical results Power balanced scenario over satellite Power unbalanced scenario over satellite Lab results Conclusion Acknowledgments References 16 A mitigation technique for adjacent channel interference in communication satellites Introduction Methodology Results Conclusion Acknowledgments References Section 4 – New Satellite System Architectures and Components 17 Novel RF architectures and technologies for VSAT Introduction Near and Long Term VSAT Architectures Relevant Passive Technologies Tunable High-Q Filters Compact Diplexers Low loss Phase Shifters Relevant Active Technologies GaN HPAs High-speed ADCs and DACs LNAs/LNBs Conclusion References 18 A Modular Architecture for Low Cost Phased Array Antenna System for Ka-Band Mobile Satellite Communication Introduction System Model and Antenna Aperture Requirements Modular Architecture Approach of large Scale Phased Array Antenna Design and Implementation of APAA Module Active phased array antenna: Super Module Results Conclusion Acknowledgments References 19 A cots-based software-defined communication system platform and applications in LEO Introduction Hardware Active phased-array antenna (APA) Software defined radio (SDR) Single-board computer (SBC) Power conditioning unit (PCU) Applications Example 1: Regenerative active phased array payload Example 2: Physical-layer assisted ranging Summary References 20 V-band low-noise amplifier module for high throughput satellite applications Introduction LNA unit design Key elements of the LNA module WG-MS Transition LNA MMIC Voltage Variable Attenuator (VVA) MLA MMIC LNA module test results Conclusions Acknowledgement References 21 Satellite payload design for cislunar communications Design requirements Coverage area and constellation design Radio propagation Spectrum resources Frequency plan Reference scenario Capacity planning Baseline design K-band communications payload UHF-band communications payload S-band communications payload Payload Schematic diagram K-band spot beam antennas K-band Gateway antenna K-band antenna control electronics unit (ACU) UHF-band antenna S-band antenna Frequency conversion Channel multiplexing and filtering High power amplification UHF Digital Signal Processor Signal level analysis Conclusions References Section 5 – High Speed Optical Communications and Feeder Links 22 Alphasat, Sentinel-1A/B, Sentinel-2A/B, and EDRS Paving theWay for Systematic Optical Data Transfer for Earth Observation Missions Introduction The Laser Communication Terminal (LCT) The Ka-Band Transmitter Optical Inter-Satellite Link Execution Concept Alphasat TDP1, Sentinel-1A . . . and -2A, -1B, and -2B: optical partners in orbit Alphasat ( ASA) and Sentinels OISL Operations The European Data Relay Satellite System Links and System Performance Conclusions References 23 Diversity Architectures for High Data Rate Ground-to-Satellite Optical and EHF Links Introduction Satellite Systems with EHF and Optical Ground Space Links Use Cases for Ground Space Link Diversity Unified Network Layer Model for Diversity Switching Linear Programming-Based Optimization Model System Design Phase Operational Phase Implementation Considerations Conclusion References 24 Research and development approach to realize flexible opticalground network operations for effective data downlink from space to ground Introduction Methodology Optical ground network system Cloud monitoring and determination method Optical network planning method Optical network control method Results Conclusion Acknowledgments References Section 6 – VHF Data Exchange Systems 25 On the VHF radio channel for the data exchange system via satellite (VDE-SAT); experimental results from the NORSAT- Introduction Experiment Overview NorSat-2 transmitter Ship receiver Results Received beacon carrier power Signal fading Noise and interference Signal-to-noise ratio Time variability Conclusion Acknowledgments References 26 Field trials of the VHF data exchange system (VDES) satellite downlink component Introduction Measurement campaign Location Receiver station hardware Captures configuration Data collection summary Data processing VDES components conditioning CW carrier BPSK/CDMA modulated carrier Results Signal level measurements and channel characterization Carrier to noise plus interference density ratio estimation Signal to interference plus noise ratio (SINR) Channel equalizer impact Conclusions Acknowledgments References Section 7 – Mobile Satellite Systems and Bandwidth Efficient Techniques 27 Mobility enhancement for digital video broadcast networks via satellite Introduction Radio Propagation Channel Models The DVB-S2 Implementation of 16-APSK and 32-APSK in a Mobile Satellite Channel Environment Channel Model Selection and Parameters Channel Model Selection Criteria Mobility and Doppler shift Results and Discussion Conclusion References 28 System level modelling of DVB-S2X in high throughput satellite system Introduction System level modelling Satellite Network Simulator 3 DVB-S2X modelling Simulation results Case 1: Uniformly distributed SINR range Case 2: Cell capacity Case 3: Burst throughput Conclusion References 29 Demonstration of Autonomous Bandwidth Allocation Scheme using SC-FDMA Subcarrier Switching Introduction Autonomous Bandwidth Allocation Scheme ( ABAS) Configuration of ABAS Prototype Modulation and demodulation adopting SC-FDMA Platform and block diagram Measurement Results Verification of error free BER performance Conclusion References 30 Robust initial access technique of spread spectrum based on DVB-RCS2 standard for mobile application Introduction Some Descriptions Service scenario Comparative Analysis of spread spectrum scheme Modulator Channel Model Burst Detector Design Overall demodulator architecture Conventional approach for burst detector Proposed approach for burst detector Numerical Results Conclusion Acknowledgments References 31 Beam-hopping over-the-air tests using DVB-S2X super-framing Introduction Test Setup and Employed Devices System and Satellite Configuration Signal and Waveform Configuration Details of the Test Setup Test Methodology and Goals Over-The-Air Test Results Observations and General Insights Network Synchronisation Results Evaluation of Terminal Measurement Statistics Effects, Artefacts and Impairments Conclusions Acknowledgments References Section 8 – Transmitter and Modern Technologies 32 Maximizing data throughput in earth observation satelliteto ground transmission by employing a flexible high data rate transmitter operating in X-Band and Ka-Band Introduction Overall Modulator Design Digital Processing Design Predistortion Characteristics of High Data rate Modulator Verification of Design End-to-End Performance Applications Application for Data Downlink Transmission in Earth Observation Satellites Usage in Relay Payloads Evolution: Integrated Transmitter Conclusions Acknowledgments References 33 Implementation of a Machine Learning Based Modulation Scheme in GNURadio for Over-the-Air Packet Communications Introduction Auto-encoder model of an RF communication system GNURadio Implementation Packet Transmitter Flowchart Packet Receiver Flowchart Custom GNURadio Blocks Incorporating the Training Program and GNURadio Flowcharts Asynchronous Architecture Transmitter Receiver Conclusions, Challenges, and Future Prospects References 34 An efficiency comparison between timeslicing and multi-carrier transmission for linearized transponders Introduction A Need for wide forward carriers Timeslicing to have affordable receivers Implementation of timeslicing using virtual carriers A Concept of virtual carriers to achieve a modularsystem implementation making abstraction of the physical layer A timeslice selector forcing force-empty frames when needed Efficiency comparison between single wideband and multi-carrier transmission Seamless load balancing between virtual carriers Conclusion Acknowledgments References Section 9 – 5G and Satellite Networks Integration 35 Efficient 5G Edge Caching Over Satellite Introduction Technological Enabler for Satellite-assisted Edge Caching Hybrid Satellite Integrated Satellite-Terrestrial System System model and caching algorithm Caching via Broadcast mono-beam Caching via Broadband multi-beam Caching via Hybrid design Cost per bit calculation Numerical results Conclusions and Future Works Acknowledgments References 36 Use cases to business modelling of satellite backhaul in 5G Introduction Use Cases Selected use cases Background developments Related deployment opportunities Key performance indicators (KPIs) The role of KPIs Satellite and 5G KPIs Mapping of SaT5G use cases to 5G PPP KPIs Architecture Roadmap and technical requirements for satellite architectures Backhaul architectures and 3GPP Business implications on the architecture Business case Methodology Model and key assumptions Findings Conclusion Acknowledgments References 37 5G technologies for a communications and navigation integrated infrastructure on moon and mars Introduction Why 5G for the Moon and Mars? A lunar/martian communications network Communications with Earth Positioning, Navigation and Timing Conclusion References Section 10 – Satellite Networks Design Challenges and Applications 38 Capacity enhancement and interference management for interactive satellite networks Introduction Interference Management Techniques Reference Scenarios Configuration System Model State-of-the-Art, Four Color Frequency Mapping Interference Management Methodology Preliminary Performance Evaluation Simulation Results Non-Spreading Cooperative NOMA Simulation Results Spreading CDM NOMA Simulation Results Conclusion Acknowledgments References 39 VLEO Satellites – a New Earth Observation Space Systems Commercial and Business Model Introduction Earth Observation Applications-Benefits and Challenges Benefits of VLEO Challenges of VLEO Aerodynamic Torques Electric Propulsion Atmospheric Environmental Conditions Electric Propulsion Concepts New Applications CubeSat Applications Conclusions References 40 Towards the Internet for Space: bringing cloud computing to space systems Introduction Background Cloud computing High-speed intersatellite communication Distributed data processing and storage Space cloud Autonomous and decision making in orbit Virtual space missions The starting-up problem ISS cloud computing services O-ISL terminal Processing module Data storage Downlink Conclusions References Index Back Cover