| ABSTRACT | 第4-5页 |
| 摘要 | 第6-12页 |
| CHAPTER 1:Introduction | 第12-16页 |
| 1.1 Research background and significance | 第12-13页 |
| 1.2 Research status | 第13-14页 |
| 1.3 Research innovation | 第14-15页 |
| 1.4 Report layout | 第15-16页 |
| CHAPTER 2:Related research | 第16-32页 |
| 2.1 Heterogeneous network | 第16-19页 |
| 2.1.1 Heterogeneous cellular network | 第16-18页 |
| 2.1.2 Functionalities and applications of heterogeneous networks | 第18-19页 |
| 2.2 Cognitive radio | 第19-28页 |
| 2.2.1 The use of spectrum | 第19-21页 |
| 2.2.2 SDR-Software Defined Radio and Cognitive Radio | 第21-22页 |
| 2.2.3 Cognitive network architecture and functionality | 第22-28页 |
| 2.3. Heterogeneous cognitive radio network | 第28-29页 |
| 2.4. Spectrum sensing | 第29-32页 |
| 2.4.1. Types of spectrum sensing | 第30-32页 |
| CHAPTER 3:Overview and summary of existing research | 第32-36页 |
| 3.1. Overview | 第32页 |
| 3.2 Cooperative Spectrum Sensing in Heterogeneous Cognitive Radio NetworksBased on Normalized Energy Detection | 第32-33页 |
| 3.3 GLRT Based Cooperative Spectrum Sensing with Soft Combination inHeterogeneous Networks | 第33-34页 |
| 3.4 Cooperative Spectrum Sensing With Heterogeneous Devices:Hard CombiningVersus Soft Combining | 第34-36页 |
| CHAPTER 4:Simulation and comparrison of Exisiting Research | 第36-42页 |
| 4.1. Introduction | 第36页 |
| 4.2. Simulation results and analysis | 第36-41页 |
| 4.2.1 Simulations of Cooperative Spectrum Sensing in Heterogeneous CognitiveRadio Networks Based on Normalized Energy Detection | 第37-38页 |
| 4.2.2 Simulations of GLRT Based Cooperative Spectrum Sensing with SoftCombination in Heterogeneous Networks | 第38-39页 |
| 4.2.3. Simulations of Cooperative Spectrum Sensing With Heterogeneous Devices:Hard Combining Versus Soft Combining | 第39-41页 |
| 4.3. Summary | 第41-42页 |
| CHAPTER 5: Proposed new algorithm | 第42-50页 |
| 5.1 Introduction | 第42页 |
| 5.2 Algorithm description | 第42-43页 |
| 5.3 Simulation results and analysis | 第43-49页 |
| 5.4 Summary | 第49-50页 |
| Chapter. 6 Conclusion and future works | 第50-52页 |
| 6.1 Conclusion | 第50页 |
| 6.2 Future Works | 第50-52页 |
| References | 第52-55页 |
| Acknowledgements | 第55页 |
