Wireless and Satellite Systems

Name: Wireless and Satellite Systems | 12th EAI International Conference, WiSATS 2021, Virtual Event, China, July 31 - August 2, 2021, Proceedings
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12th EAI International Conference, WiSATS 2021, Virtual Event, China, July 31 - August 2, 2021, Proceedings

Qing Guo Weixiao Meng Min Jia Xue Wang(Editor)

Springer (Publisher)

Published on 21. January 2022

XV, 835 pages

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978-3-030-93398-2 (ISBN)

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Content

Intro
Preface
Organization
Contents
Satellite Network Transmission
Inter Satellite Link Interference Detection and Analysis of NGSO Satellite System
Abstract
1 Introduction
1.1 Development of NGSO Constellation Status of NGSO Constellation
1.2 Research of Interference Analysis for NGSO Constellation
2 Construction of Inter Satellite Link Interference Model
2.1 NGSO Constellation Construction
2.2 System Model
2.3 Analysis of Interference Problem
3 Simulation Setup133
4 Conclusion
References
A Fast Acquisition Algorithm Based on High Sampling Rate FFT for LEO Satellite Signals
Abstract
1 Introduction
2 Principle
3 Simulation
References
Satellite Staring Beam Scheduling Strategy Based on Multi-agent Reinforcement Learning
1 Introduction
2 System Model
3 Multi-agent Deep Q-Learning Algorithm
4 Simulation Results
5 Conclusion
References
Optimization of Joint Power and Bandwidth Allocation for Multiple Users in a Multi-spot-Beam Satellite Communication
Abstract
1 Introduction
2 System Model
2.1 Downlink Capacity of Users
2.2 Optimization Problem Formulation
3 Proposed Joint Bandwidth and Power Allocation Algorithm
3.1 Optimal Allocation Algorithm
3.2 Low Computational Complexity Allocation Algorithm
4 Performance Analysis and Simulation Results
4.1 Efficiency of the Proposed Joint Allocation Algorithm
4.2 Performance of the Low Computational Complexity Allocation Algorithm
4.3 The Impact of Pre-allocations for Each Beam
5 Conclusion
Appendix
References
A Networking Transmission Method in the Case of Limited Satellite Transceiver
Abstract
1 Introduction
2 Topology Planning Based on Fairness
3 Low Delay Routing Method Based on Step-by-Step Strategy
4 Performance Evaluation and Simulations
5 Conclusion
Acknowledgments
References
Design and Implementation of a High Efficiency Space Packet Routing Algorithm on a Spacecraft
Abstract
1 Introduction
2 Space Packet Protocol
3 Constructing a Hash Routing Table
4 Forwarding a Space Packet
4.1 Finding a Route
4.2 Forwarding a Space Packet on 1553B Buses
4.3 Forwarding a Space Packet on Ethernet Bus
4.4 Forwarding a Space Packet to Other Process
5 Performance Evaluation
6 Summary
References
A Design of GNSS Based Time Management System for Telecommunication Satellite
Abstract
1 Introduction
2 Architecture of Satellite Time Management System
2.1 Time Management Working Principle
2.2 Time Management System Architecture
3 Time Management Strategy Design
3.1 Operation Mode of Time Management
3.2 Time Management Specific Design
4 Accuracy Analysis of Time Management
5 Conclusion
References
Attitude Determination Method Based on GNSS Signals Null Steering Technology
Abstract
1 Introduction
2 Beam Access by GNSS Attitude Determination Module
3 GNSS Attitude Determination Technologies
3.1 Multi-baseline and Multi-DOA Attitude Determination Methods
3.2 Limitation of Carrier Phase Measurement
3.3 GSNS Technology for DOA Estimation
4 Typical Applications
5 Conclusion
References
Construction of Knowledge Graph Based on Conventional Jamming Patterns
Abstract
1 Introduction
2 System Model
2.1 Anti-jamming Knowledge Graph Architecture
2.2 Anti-jamming Strategies of Conventional Jamming Patterns
3 Establishment of Communication Anti-jamming Knowledge Graph of Conventional Jamming Patterns
3.1 The Construction Process of Anti-jamming Knowledge Graph of Conventional Jamming Patterns
3.2 Construction of Anti-jamming Knowledge Graph
4 Results and Application
4.1 Overview of Anti-jamming Knowledge Graph
4.2 Relationship Expansion of Anti-jamming Knowledge Graph
5 Conclusion
References
Effects of Link Disruption on Licklider Transmission Protocol for Mars Communications
Abstract
1 Introduction
2 System Model
3 Experimental Setup and Configurations
4 Numerical Experimental Results and Discussion
4.1 Single Link Disruption Event with Different Durations
4.2 More than One Link Disruption Event with Different Starting Times
5 Conclusions
References
Space Information Networks and Spacecraft System
A Cloud Service Architecture for SDN-Based Space-Terrestrial Integrated Network
Abstract
1 Introduction
2 Related Work
3 The Space-Terrestrial Integrated Network Architecture
3.1 SDN-Based Heterogeneous Network Convergence Architecture
3.2 The Space-Terrestrial Integrated Cloud Service Architecture
4 Application Scenarios
5 Conclusions
Acknowledgement
References
Research on Beam Interference Optimization Strategy of LEO Constellation
Abstract
1 Introduction
2 Periodic Beam Closing Strategy
2.1 Beam on/off Policy
2.2 Simulation Results and Analysis
3 Dynamic Adjustment Strategy of Beam Resources
3.1 Frequency Dynamic Allocation Strategy
3.2 Simulation Results and Analysis
4 Conclusion
References
A Full Lifecycle-Oriented Flexible Method for Satellite Design
Abstract
1 Introduction
2 Definition of Satellite Flexibility
3 Methods Supporting the Design of Flexible for Full Lifecycle
4 Flexible Design of the Satellite
4.1 Flexibility of Satellite Hardware Designed
4.2 Flexibility of Satellite Software Designed
5 Conclusion
References
Spacecraft Information Flow Collaborative Design Model and Application
Abstract
1 Introduction
2 Information Flow Elements
2.1 Entity
2.2 Relationship
3 Information Mapping Rules
4 Modeling of Spacecraft Collaborative Design System Based on Information Flow
4.1 Spacecraft Collaborative Design Process
4.2 Activity Model of Spacecraft Collaborative Design
4.3 Role Model of Spacecraft Collaborative Design
4.4 Information Interaction Model of Spacecraft Collaborative Design
5 Practice of Spacecraft Information Flow Collaborative Design
5.1 Division of Information Flow Elements
5.2 Collaborative Design Activity Model
5.3 Role Model of Collaborative Design
5.4 Information Interaction Model
6 Conclusion
References
Design of a Spacecraft Network System Based on Space-Ground Integrated Network
Abstract
1 Introduction
2 Architecture of Spacecraft Network
3 Protocol Stack of Spacecraft Network
3.1 Application Layer
3.2 Transport Layer
3.3 Network Layer
3.4 Data Link Layer
3.5 Physical Layer
4 Network Communication Mode
4.1 Autonomous Addressing Mechanism for Spacecraft Network
4.2 Dynamic Routing Mechanism in Space-Ground Network
5 Experiment
6 Conclusion
References
A Dynamic Hashing Method for Storage Optimization of Spacecraft Verification Database
Abstract
1 The Introduction
2 Selection of Common Algorithms
3 Dynamic Hash DSH Algorithm
3.1 The First Round of Uniform Hashing of DSH Algorithm
3.2 DSH Algorithm Sub-round Dynamic Partitioning
4 Conclusion
References
A Method of On-Board Dynamic Health Management of TT&C Transponder of Spacecraft
Abstract
1 Introduction
2 Principle of Fault Detection
2.1 Health State
2.2 Fault Decision
2.3 Fault Removal
3 Design and Application of Health Management System
3.1 System Composition
3.2 Design of Fault Detection and Recovery Process
3.3 On-Orbit Applications
4 Conclusion
References
Structured Design Method of Spacecraft Telecommand Information Flow Based on Electronic Data Sheet
Abstract
1 Introduction
2 The Process of Spacecraft Information Flow Design
3 Design of Electronic Data Sheet
3.1 Design Principles
3.2 Design of Basic Component
3.3 Design of Container Data Sheet
3.4 Design of Interface Connection Between Containers
4 Application of Electronic Data Sheet in Telecommand Information Flow Design
4.1 Design and Application Based on Layered Model
4.2 Output and Application of Structured File
5 Conclusion
References
A Telecommand Scheme for Spacecraft Based on High-Speed and Low-Speed Hybrid TT&C System
Abstract
1 Introduction
2 Requirement of Spacecraft Telecommand
3 Space Data Link Protocols
4 Design of Telecommand Scheme
4.1 Main Ideas
4.2 Design of Data Flow
4.3 Design of Protocol
4.4 Further Recommendation
5 Summary
References
Spacecraft Electronic Datasheet Based Onboard Spacecraft Test System Design
Abstract
1 Introduction
2 SEDS Based Modeling
3 System Architecture
4 Experiment and Effects
5 Summary
References
Design of Universal Software Architecture for Spacecraft Autonomous Thermal Control
Abstract
1 Introduction
2 Analysis of Control Elements of Active Thermal Control
2.1 Temperature Accuracy
2.2 Control Period and Time Slot of Thermal Control
2.3 Switch Mode of Heater
2.4 Energy Constraints
3 Universal Architecture for Active Thermal Control
3.1 Universal Software Architecture Based on Software Components
3.2 Hardware Composition of Avionics System
3.3 Control Process of Software Architecture
4 Analysis and Evaluation of Application Effect
5 Conclusions
References
A Network Traffic Collection System for Space Information Networks Emulation Platform
Abstract
1 Introduction
2 Architecture of Network Traffic Collection System
3 Optimization Schemes
3.1 Optimized Configuration of System Parameters
3.2 Real-Time Tracking Performance
3.3 Parallel Processing
4 Experiment Results
4.1 The Effect of the Number of Tsharks on Performance
4.2 Comparsion of Writing Time Between Different Methods
5 Conclusion
Acknowledgements
References
Design and Implementation of SEDS in Spacecraft Software
Abstract
1 Introduction
2 Research Status
3 SEDS Design
3.1 Top-Level Design
3.2 SEDS Design
4 SEDS Implementation
4.1 Command Sending Process
4.2 Interface and Parameter Realization
4.3 Verification
5 Concludes
Acknowledgement
References
A Large-Scale Emulation Method of AOS Protocol Based on Space Network Emulation Platform
Abstract
1 Introduction
2 Design for AOS Scale Emulation
2.1 Design of the AOS Gateway
2.2 Method of AOS Scale Emulation
3 Experiment and Discussion
3.1 Experimental Scenario
3.2 Results
4 Conclusion
Acknowledgements
References
Towards Self-organized Networking in Large-Scale Nano-satellite Networks
Abstract
1 Introduction
2 System Model
3 Clustering Algorithm
4 Performance Analysis
4.1 The Arrival Rate
4.2 The Collision Probability
4.3 The Time Spent Each State
4.4 System Throughput
4.5 The Average Delay
5 Simulation and Results Analysis
6 Conclusion
Acknowledgments
References
A Dynamic QoS Routing Mechanism for Deep Space Network Based on SDN Architecture
Abstract
1 Introduction
2 Related Work
3 SDN-Based Deep Space Network Architecture
4 Dynamic Routing Algorithm Based on Real-Time Status of Deep Space Network Nodes
4.1 Design Goals
4.2 SADR Algorithm
4.3 SADR Algorithm Description
5 Performance Evaluation
6 Conclusion
Acknowledgement
References
Satellite Traffic Forecast Based on Multi-dimensional Periodic Features
Abstract
1 Introduction
2 Prediction Model
2.1 Short-Term Temporal Dependency
2.2 Long-Term Temporal Dependency
2.3 Final Prediction
3 Experiment Settings
3.1 Dataset
3.2 Evaluation Metric and Baselines
3.3 Hyper-parameter Settings
4 Results
5 Conclusion
References
Research and Simulation Analysis on the Characteristics of Walker Constellation Network for Global Networking Real-Time Telemetry, Track and Command
Abstract
1 Introduction
2 Constellation Network Simulation System Design
2.1 Simulation Input
2.2 Pilot Intervention Assembly
2.3 Model and Data Generation Module
2.4 Simulation Engine Module
2.5 Simulation Parameter Statistics and Display Module
2.6 Software Operation Environment Module
3 Modeling of Simulation Model for the Characteristics of Walker Constellation Network
4 Influencing Factors and Optimization of Constellation Network Transmission Performance
4.1 Support Constellation Configuration Optimization Simulation
4.2 Support Link Bandwidth Verification
4.3 Support Cross-Orbit Link Optimization
4.4 Analysis of Supporting Transmission Demand Satisfaction Degree
4.5 Support Time Distribution Analysis of Data Source
5 Simulation and Analysis of Transmission Characteristics of 5 Constellation Network
5.1 Simulation Analysis of the Influence of Network Topology on Transmission Performance
5.2 Simulation Analysis of the Impact of Link Bandwidth on Network Capacity
5.3 Simulation Analysis of the Impact of Cross-Track Link Configuration
5.4 Simulation Analysis of the Influence of Data Transmission Mode
5.5 Simulation Analysis the Influence of Data Generation Time Distribution
6 Conclusion
References
The Development of a Lightweight Network Emulator for Large-Scale Space Network Emulation
Abstract
1 Introduction
2 Architecture Design
3 Improvement to MininetE
4 Experimental Validation
4.1 OSPF Routing Simulation Process
4.2 Hybrid Protocol Emulation
5 Performance Evaluation
6 Conclusion
Acknowledgements
References
Discussion on Application of Model-Based Systems Engineering Method to Human Spaceflight Mission
Abstract
1 Introduction
2 Overview of MBSE Method
2.1 The Concept and Advantage of MBSE
2.2 Typical MBSE Method and Related Tools
3 Process of MBSE Method
4 Application of MBSE Method in the Mission Design of Manned Spacecraft
5 Conclusion
References
An Agile Platform for Partial Discharge Diagnostic Testing and Monitoring in Air-Insulated Substations
1 Introduction
2 The Agile Platform
2.1 Pre-requisite
2.2 Setup and Procedure
2.3 Verifying Algorithms in MATLAB
3 Experiments
4 Discussion and Conclusions
References
Signal Processing for Communications and Networking
Research on the Selection Method of Output Degree Distributions for LT Codes
1 Introduction
2 Preliminaries
3 The Differences Between the Degree of Output Symbols
3.1 On the Erasure Correcting Capability of LT Codes
3.2 On the Coding Efficiency for LT Codes
4 Simulation Results
5 Conclusion
References
Novel Shaped 8/16PSK Modulation with Improved Spectral Efficiency
1 Introduction
2 System Model
3 Proposed Precoder
4 Receiver Design
4.1 Receiver Based on BCJR
4.2 Receiver Based on I-Q Coherent Demodulation
5 Performance Analysis
6 Numerical Results and Discussion
7 Conclusion
References
Location-Aided MmWave Hybrid Precoding Prediction for Air-to-Air Communications
1 Introduction
2 System Model and Channel Model
2.1 System Model
2.2 Channel Model
2.3 Temporal Correlations of the Channel
3 Two-Stage Hybrid Precoding Prediction Design for A2A Communications
3.1 Analog Precoder and Combiner Design
3.2 Digital Precoder Design
3.3 Hybrid Precoding Data Transmission Process
4 Numerical Results
5 Conclusions
References
Outage Probability for Device to Device and Cellular Heterogeneous Networks over Nakagami-m Channels
1 Introduction
2 System Model and Channel Model
2.1 System Model
2.2 Channel Model
3 Outage Probability
4 Numerical Results and Analysis
5 Conclusions
References
On Codeword Bits Disparity in Polar Codes
1 Introduction
2 Preliminaries
2.1 Polar Codes
2.2 Successive Cancellation Decoding Algorithm
2.3 Construction of Polar Codes
3 The Various Important Levels of Different Codeword Bits in Polar Codes
3.1 BLER Performance of Polar Codes over Non-uniform Channels
3.2 The Proposed Scheme About Significance Disparity of Codeword Bits in Polar Codes.
4 Simulation Results
5 Conclusion
References
Generalized Simplified Successive-Cancellation Decoding of Multi-kernel Polar Codes
1 Introduction
2 Preliminaries
2.1 Multi-kernel Polar Codes
2.2 SC and SSC Decoding
2.3 SCL and SSCL Decoding
3 Generalized Simplified Decoding Algorithms
3.1 Generalized SSC Decoding for MK Polar Codes
3.2 Generalized SSCL for MK Polar Codes
4 Numerical Results
5 Conclusion
References
Multiple Dimensional Scaling Hybrid Precoding in Millimeter Wave MIMO System
1 Introduction
2 System Model
2.1 System Model
2.2 Channel Model
3 Problem Formulation
4 Multiple Dimensional Scaling Hybrid Precoding
5 Simulation Results
6 Conclusion
References
A Novel Spatial Modulation Based on Cosine Function Pattern
1 Introduction
2 The Model of ABPM
3 Modified Cosine Beam Pattern Method (M-CBPM)
4 Performance Analysis of M-CBPM
5 Numerical Results
6 Conclusion
References
Low Complexity Hybrid Precoding for Millimeter Wave MIMO Systems
Abstract
1 Introduction
2 System Model
2.1 System Model
2.2 Millimeter Wave Channel Model
2.3 Hybrid Precoder Designs
3 Hybrid Precoding Algorithm
3.1 RM-SVD
3.2 OBMP
3.3 MIB-SOMP
4 Performance Analysis
4.1 Complexity Analysis
4.2 Spectral Efficiency
4.3 Bit Error Rate
5 Conclusions
References
Cloud Prediction Based on the Combination of Optical Flow and Deep Learning
Abstract
1 Introduction
2 Related Work
3 Our Cloud Prediction Model
3.1 Voxel Flow
3.2 Convolutional Encoder-Decoder
3.3 Volume Sampling Layer
4 Experiments
4.1 Our Cloud Image Dataset
4.2 Model Training
4.3 Model Evaluation
5 Conclusion and Future Work
Acknowledgement
References
Chaotic Sea Clutter Modeling Based on Gray Wolf Algorithm
Abstract
1 Introduction
2 Chaotic Characteristics of Sea Clutter
2.1 Phase Space Reconstruction
2.2 Delay Time
2.3 Embedding Dimension
2.4 Correlation Dimension
2.5 Lyapunov Exponents
3 Grey Wolf Algorithm
3.1 Grey Wolf Algorithm
3.2 RBF Neural Network Based on Gray Wolf Optimization Algorithm
4 Simulation and Modeling
5 Conclusion
References
Low Overhead Growth Degree Coding Scheme for Online Fountain Codes with Limited Feedback
1 Introduction
2 Online Fountain Codes with Limited Feedback
3 Growth Degree Encoding Scheme for Online Fountain Codes
4 Overhead Analysis
4.1 Performance Analysis of Online Fountain Codes with Limited Feedback
4.2 Performance Analysis of the Proposed GDS Scheme
5 Simulation Results
6 Conclusions
References
Ad Hoc Networks
Optical Communications and Networks
HFSWR Polarization DOA Estimation Based on Quaternion
Abstract
1 Introduction
2 Polarized Quaternion Signal Model
2.1 Quaternion
2.2 Polarization Model
3 HFSWR Polarized Quaternions DOA Estimation Algorithm
3.1 HFSWR Signal Processing
3.2 DOA Estimation Algorithm
4 Simulation Analysis
5 Conclusion
Acknowledgement
References
Trajectory Optimization in UAV Communication System Based on User-QoS
1 Introduction
2 System Model
3 The Proposed Algorithm
3.1 User Scheduling Optimization
3.2 UAV Trajectory Optimization
3.3 Global Algorithm and Convergence
4 Numerical Results
5 Conclusion
References
Research on Dynamic Timeslot Reservation Handover Algorithm Based on Remaining Time in Beam Hopping System
Abstract
1 Introduction
2 Beam Hopping System Model
3 Handover Algorithm and Analysis Model
3.1 Handover Mechanism
3.2 Analysis Model
3.3 Dynamic Timeslot Reservation Handover
4 Simulation and Analysis
5 Conclusion
References
Equal Proportional Probability Caching Policy for Heterogeneous Network Based on Stochastic Geometry Theory
1 Introduction
2 System Model
3 Caching Policies and Performance Analysis
3.1 Caching Policies and Connecting Strategy
3.2 Outage Probability
4 Numerical Results
5 Conclusion
References
Momentum-Based Adversarial Attacks Against End-to-End Communication Systems
1 Introduction
2 System Model
3 A Momentum-Based Adversarial Perturbation Generation Algorithm
3.1 Momentum-Based Iterative Gradient Method
3.2 Generative Algorithm of Momentum-Based Adversarial Perturbation
4 Crafting Momentum-Based Adversarial Attacks Against End-to-End Communication Systems
4.1 Crafting a White-Box Adversarial Attack with Momentum
4.2 Crafting a Black-Box Adversarial Attack with Momentum
5 Conclusion
References
A Routing Algorithm Based on Node Utility and Energy in Opportunistic Networks
Abstract
1 Introduction
2 Design Idea of ProEnergy Algorithm
2.1 Motivation
2.2 The Opportunistic Network Model Based on Social Attributes
3 Relation Model
3.1 Contact Intensity Prediction
3.2 Build Relationship Samples
3.3 Relational Model
4 ProEnergy Routing
4.1 Energy Weight Factor
4.2 ProEnergy Routing Algorithm
5 Simulation Experiment
5.1 Simulation Environment and Parameter Setting
5.2 Experimental Results Analysis
6 Conclusion
Acknowledgements
References
A Design Scheme and Security Analysis of Unmanned Aerial Vehicle
Abstract
1 Introduction
2 Overview of UAV Development
2.1 Initial Stage
2.2 Practical Stage
2.3 High-Speed Development Stage
3 UAV Development Trend
3.1 System Performance Level
3.2 Application Fields
3.3 The Level of Intelligent Autonomy
3.4 Human Machine Cooperation
3.5 Swarm
4 UAV: The Target of Cyber Attacks
4.1 Security Threats of UAV Communication
4.2 Security Threats of UAV Network
4.3 Security Threats of UAV System
5 UAV: A New Means of Cyber Attack
5.1 Cyber Attack Performance of UAV
5.2 The Threat of UAV to Important Infrastructure
5.3 The Threat of UAV to Public Security
5.4 The Threat of UAV to Privacy
6 Summary
Acknowledgements
References
On the Performance of Diversified Hybrid Carrier System Based on the Extended WFRFT
1 Introduction
2 Preliminary
3 System Description
3.1 Extended Weighted Fractional Fourier Transform
3.2 System Model
3.3 Analysis of Anti-interception Performance
4 Simulation Results and Discussion
5 Conclusion
References
Space-Borne Passive Location Based on a Virtual Synthetic Aperture Mechanism
Abstract
1 Introduction
2 Signal Model
3 Space-Borne Virtual Aperture Location Method
4 Resolution and Phase Error of the Range Model
4.1 Azimuth Resolution
4.2 Range Resolution
4.3 Phase Error of the Range Model
5 Simulation
6 Conclusion
Acknowledgment
References
A Cooperative Dictionary Learning and Semi-supervised Learning Framework for Sea Clutter Suppression of HFSWR
Abstract
1 Introduction
2 Research Status Review
3 Proposed Methodology
3.1 STEP 1: Semi-supervised Classification - Enhanced M-training
3.2 STEP 2: Dictionary Learning
3.3 Proposed Framework
4 Experimental Data Processing and Experiment Results
4.1 Experimental Data Processing
4.2 Experiment Results
5 Conclusion
Acknowledgments
References
Improving Positioning Accuracy Using WLAN Optimization for Location Based Services and Cognitive Radio Networks
1 Introduction
2 System Model
3 Proposed Technique
4 Simulation Results
4.1 Positioning Comparison of Algorithm A and Algorithm B
4.2 Impact of Variable CKB on the Results
5 Conclusion
References
Meshtastic Infrastructure-less Networks for Reliable Data Transmission to Augment Internet of Things Applications
1 Introduction
2 Related Works
3 System Description
4 Implementation Details
5 Experimental Results
6 Discussion and Future Work
References
High-Precision Monitoring System for Strong Earthquakes in Buildings Based on Distributed Intelligent Ad-Hoc Network
Abstract
1 Introduction
2 Function Realization
2.1 System Structure Model
2.2 Data Acquisition
2.3 Data Transmission
3 Test and Result Analysis
4 Conclusion
Acknowledgment
References
Resource Sharing Between Non-direct D2D Users and Cellular Users
1 Introduction
1.1 LTE-A Relay Cellular Network
1.2 D2D Communication Technology
2 System Model
2.1 D2D Non-directed System Model
3 Problem Formulation
3.1 Problem Modeling
3.2 Power Distribution Method Based on Lagrange Multiplier Method
4 Simulation Results and Performance Analysis
5 Conclusion
References
Wireless Communications and Wireless Networks
Multi-user UAV Relayed Half-Duplex Uplink Cellular Networks with Direct Links and Control and Back-Haul Links
1 Introduction
2 System Illustration
2.1 System Model
2.2 Proposed NOMA Scheme
3 Mathematical Problem Formulation
4 Solution Approach
5 Numerical Results and Discussion
6 Conclusion
References
Energy-Efficient Joint Offloading and Resource Allocation Strategy in Vehicular Networks
Abstract
1 Introduction
2 System Model
2.1 Network Model
2.2 Communication Model
2.3 Computation Model
3 Problem Formulation
4 Joint Offloading and Resource Allocation Algorithm
5 Performance Evaluations
5.1 Parameters
5.2 Simulations
6 Conclusion
References
PAPR Reduction Scheme for Localized SC-FDMA Based on Deep Learning
1 Introduction
2 System Model
2.1 System Model
2.2 Design Insights
3 Proposed Scheme
3.1 Introduction of Autoencoder
3.2 Overall Structure of AE-SC-LFDMA
3.3 Training of Network
4 Simulation Results
4.1 Parameter Setting
4.2 PAPR Comparison
4.3 BER Comparison
5 Conclusion
References
A Power Allocation Method for Downlink MUSA
Abstract
1 Introduction
2 System Model
3 Channel Capacity Analysis of Power Allocation
3.1 Classify and Discuss
3.2 Simulation and Analysis
4 BER Performance
5 Conclusion
Acknowledgements
References
Downlink Power Allocation Strategy in Multi-antenna Ultra-dense Networks Based on Non-cooperative Game
1 Introduction
2 System Model
3 Problem Formulation
3.1 Game Model
3.2 Analysis of Nash Equilibrium
4 Distributed Iterative Power Allocation Algorithms
4.1 The Dynamic Pricing Power Allocation Algorithm
4.2 Convergence Analysis
4.3 An Approximate Form
5 Numerical Results
6 Conclusion
References
Reliable Transport Mechanism Based on Multi-queue Scheduling
Abstract
1 Introduction
2 System Model
2.1 A Credit-Based Flow-Control Mechanism
2.1.1 Types of Business in CBS
2.1.2 CBS Queue Model
3 A Multi-queue Based on Token Mechanism
3.1 Analyze the Problems in the Time-Deterministic Network Forwarding Mechanism
3.2 A Credit-Based Multi-queue Scheduling
3.2.1 Formulate Packet Forwarding Queue Rules
3.2.2 A Scheme of Credit-Based Multi-queue Scheduling
4 Simulation
Acknowledgments
References
Ergodic Lower Bound and Optimal Power Allocation for Secrecy-Capacity-Optimization-Artificial-Noise in MIMO Wireless System
1 Introduction
2 System Model
3 SCO-AN: Optimal Power Allocation
3.1 Ergodic Lower Bound of Secrecy Capacity
3.2 Infinite NA Analysis
3.3 The Optimal Allocation
4 Results and Discussion
5 Conclusion
References
Radar Systems
Slow-Time MIMO in High Frequency Surface Wave Radar
Abstract
1 Introduction
2 Slow-Time MIMO Signal Model
3 Radar System Configuration
4 Results and Analysis
4.1 Working in MIMO Mode
4.2 Angle Estimation Performance
4.3 Clutter and Interference
5 Conclusion
Acknowledgements
References
A Radar Target Detection Method Based on RBF Neural Network
Abstract
1 Introduction
2 CFAR Target Detection
3 Target Detection Based on Neural Network
4 Simulation
4.1 The Influence of Sampling Frequency on the Mean Square Error of Neural Network Training
4.2 Target Detection Based on RBF Neural Network
5 Conclusion
References
Ground Clutter Suppression Method for Three-Coordinate Air Search Radar Based on Adaptive Processing in Beam Domain
Abstract
1 Introduction
2 Adaptive Processing Theory
2.1 Adaptive Processing in Array Element Domain
2.2 Adaptive Processing in Beam Domain
3 Implementation Methods of Adaptive Processing in Beam Domain
3.1 Adaptive Processing in the Same Scan
3.2 Adaptive Processing Based on Cognition
4 Experiments and Results
5 Conclusion
References
Integrated Radar and Communication System Design Based on Constant Envelope Waveform
1 Introduction
2 System Model
2.1 Basic Framework of Integrated System
2.2 Generation of Data Symbols
2.3 Communication Receiver
2.4 Radar Processing in Frequency Domain
3 Simulation Results
3.1 Spectral Efficiency
3.2 BER Performance Comparison
3.3 Radar Detection Performance
4 Conclusion
References
Access Technology
Deep Leaning Aided NOMA Combining Different NOMA Schemes
Abstract
1 Introduction
2 System Model and DNN-NOMA Structure
2.1 System Model
2.2 DNN-NOMA Model
3 Proposed Scheme
3.1 DNN Encoder
3.2 DNN Decoder
3.3 Training
4 Simulation Results
5 Conclusion
Acknowledgements
References
A Novel Combining Method for NOMA and OMA in Cell-Free Massive MIMO System
Abstract
1 Introduction
2 System, Channel and Signal Model
2.1 System and Channel Model
2.2 Signal Model
3 Achievable Spectral Efficieny
4 Power Allocation
5 Numerical Results
6 Conclusion
Acknowledgements
References
Accurate SER Quantization for Uplink Multi-user NOMA System
1 Introduction
2 Preliminary
2.1 System Model
2.2 Successive Interference Cancellation Decoding
2.3 Error Propagation Problem of SIC
3 SER Quantization for Multi-user NOMA System
4 Numerical Results
5 Conclusion
References
Multi-user Shared Access Research in Cell-Free Massive MIMO
Abstract
1 Introduction
2 Cell-Free Massive MIMO Model
2.1 Pilot Transmission and Channel Estimation
2.2 Downlink Data Transmission
3 MUSA Improvement of Cell-Free Massive MIMO
3.1 Cell-Free Massive MIMO Cluster Model
3.2 Spectrum Efficiency Research
3.3 System Performance Analysis
4 Conclusion
Acknowledgements
References
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