| Acknowledgment | 第1-5页 |
| Abstract | 第5-9页 |
| LIST OF FIGURES | 第9-10页 |
| 1 INTRODUCTION | 第10-24页 |
| ·BACKGROUND | 第10-12页 |
| SDR and cognitive radio | 第10-12页 |
| ·MOTIVATION OF COGNITIVE RADIO | 第12-14页 |
| ·RELATED WORKS | 第14-15页 |
| ·COGNITIVE RADIO CAPABILITIES | 第15-16页 |
| ·DYNAMIC SPECTRUM ACCESS | 第16-18页 |
| Spectrum underlay and spectrum overlay | 第17-18页 |
| ·OFDM FOR COGNITIVE RADIO | 第18-21页 |
| Spectrum sensing | 第19-20页 |
| Spectrum Shaping | 第20-21页 |
| ·SPECTRUM OPPORTUNITY | 第21-22页 |
| ·SPECTRUM SENSING METHODS FOR COGNITIVE | 第22-24页 |
| 2 SPECTRUM DECISION | 第24-35页 |
| ·INFRASTRUCTURE-BASED COGNITIVE RADIO NETWORK | 第24页 |
| ·CENTRALIZED DYNAMIC SPECTRUM ACCESS | 第24-25页 |
| ·COOPERATIVE SENSING | 第25-26页 |
| ·DESIGN TRADEOFF IN SPECTRUM SENSING | 第26-28页 |
| ·Performance improvement from cooperation vs. communication overhead | 第26-27页 |
| ·Reactive vs. Proactive sensing | 第27页 |
| ·Rate and reliability tradeoff due to multiband access | 第27-28页 |
| ·GENERAL FORMULATION FOR INTEGER OPTIMIZATION | 第28-29页 |
| ·SPECTRUM DECISION FOR COGNITIVE RADIO | 第29-30页 |
| ·Spectrum sensing | 第29页 |
| ·Spectrum analysis | 第29-30页 |
| ·SOME CHALLENGES OF SPECTRUM DECISION | 第30页 |
| ·SPECTRUM DECISION REQUIREMENTS | 第30-35页 |
| ·Channel characteristics of spectrum holes | 第31-33页 |
| ·Operations of primary user activity | 第33-35页 |
| 3 MINIMUM VARIANCE-BASED SPECTRUM DECISION (MVSD) SCHEME FOR REAL-TIME APPLICATIONS | 第35-42页 |
| ·SYSTEM MODEL | 第35-36页 |
| ·MINIMUM VARIANCE SPECTRUM DECISION FRAMEWORK | 第36-40页 |
| ·DATA LOSS IN THE REAL-TIME VIDEO APPLICATIONS | 第40-42页 |
| 4 PROPOSED PRACTICAL IMPROVEMENT ON THE SPECTRUM DECISION SCHEME FRAMEWORK FOR REAL-TIME APPLICATION IN COGNITIVE RADIO NETWORK | 第42-45页 |
| ·A PRACTICAL PROPOSED SPECTRUM DECISION SCHEME FRAMEWORK FOR REAL-TIME APPLICATION IN COGNITIVE RADIO | 第42-43页 |
| ·SUMMARY OF THE SIMULATION | 第43-45页 |
| 5 SIMULATIONS OR TEST | 第45-50页 |
| ·TOPOLOGY OF SIMULATION | 第45-46页 |
| ·SIMULATION RESULTS | 第46-47页 |
| ·INVESTIGATION HOW PU ACTIVITIES INFLUENCE THE PERFORMANCE OF THE TOTAL CAPACITY | 第47-48页 |
| ·PERFORMANCE OF THE QUEUE ORDERING CRITERIA FOR REAL-TIME APPLICATION CR USERS | 第48-50页 |
| ·Random assignation: | 第48页 |
| ·Reversed assignation: | 第48-49页 |
| ·Proposed assignation: | 第49-50页 |
| 6 CONCLUSION AND FUTURE WORK | 第50-53页 |
| ·CONCLUSION | 第50-51页 |
| ·FUTURE WORK | 第51-53页 |
| APPENDIX 1 SOURCE CODES FOR THE PROPOSED PRACTICAL SPECTRUM DECISION SCHEME IN MATLAB SIMULATOR | 第53-57页 |
| APPENDIX 2 NOTATIONS USED FOR THE ANALYTICAL MODELING | 第57页 |
| REFERENCE | 第57-62页 |
