Intro
Preface
Organization
Preface
Organization
Contents
Cognitive Radio Systems (CROWNCOM 2021)
Spectrum Sensing Performance of Cognitive Radio Optimized by Soft Decision Fusion Threshold
Abstract
1 Introduction
2 Related work
2.1 Cognitive Radio Model
2.2 Research Status of Spectrum Sensing
3 Research Methodology
3.1 Spectrum Sensing Technology and Algorithm
3.2 Soft Decision Fusion Threshold Optimization
3.3 Model Performance Testing
3.4 Model Parameter Settings
4 Results and Analysis
4.1 Spectrum Sensing Performance Analysis

4.2 Model Performance Analysis Under Different Criteria
4.3 Minimum Error Probability in Different Scenarios
4.4 Different Spectrum Maximum Throughput
5 Significance and Influence
6 Conclusion
References
Methodology for Characterizing Spectrum Data by Combining Quantitative and Qualitative Information
Abstract
1 Introduction
2 Background and Related Work
2.1 Spectrum Measurements
2.2 Analysis with Spectrograms
2.3 Contextual Information
2.4 Related Work
3 Approach
3.1 Quantitative Analysis
3.2 Modeling of Qualitative Information

3.3 Combining Quantitative Analysis Results with Qualitative Information
4 Results
5 Conclusion and Future Work
References
Computationally Efficient Look-up-Tables for Behavioral Modelling and Digital Pre-distortion of Multi-standard Wireless Systems
1 Introduction
2 Background
2.1 Nonlinear Power Amplifiers with Memory Effects
2.2 Discrete Dynamic Nonlinear Models and Training Algorithm
2.3 Related Work
3 Multi-standard Behavioural Modeling
3.1 Data Collection
3.2 AM-AM Distortion Characteristics as Guide to Coefficients

3.3 Multi-standard Behavioural Models
3.4 Behavioural Model Validation
4 LUT-Based Multi-standard DPD Transceiver
4.1 DPD Coefficient Estimation
4.2 Hardware Software Co-design
5 Hardware Implementation and Experimental Validation
5.1 Experiment: DPD Performance Comparison with Different Standard's Training Signals
5.2 Experiment: DPD Performance Comparison Along Different Power Levels
6 Conclusions
References
Metaheuristic Optimisation for Radio Interface-Constrained Channel Assignment in a Hybrid Wi-Fi-Dynamic Spectrum Access Wireless Mesh Network
1 Introduction

1.1 Dynamic Spectrum Access
1.2 Metaheuristic Algorithms for Optimisation
2 Related Work
3 Problem Formulation
3.1 Network Model
3.2 Problem Statement and Motivation
3.3 Assumptions
3.4 Mathematical Model
4 Methodology
4.1 Generating Feasible Candidate Solutions
4.2 Optimisation
5 Results and Discussion
6 Conclusion
References
Performance of Cooperative Spectrum Sensing Based on Random Transition of the Primary User in Laplacian Noise
1 Introduction
2 System Model
3 Performance Analysis
3.1 CSS Based on Energy Detection (CSS-ED)