摘要
Abstract
Chapter 1 Summary of the Thesis
1.1 Background and Significance
1.2 Research Status
1.3 Research Contents and Organization of Thesis
Chapter 2 Principle and Key Technologies of TDCS
2.1 Basic Principle of TDCS
2.2 Key Technologies of TDCS
2.2.1 Spectrum Estimation
2.2.2 Thresholding and Spectral Notching
2.2.3 Phase Mapping Process
2.2.4 Basis Function Generation
2.2.5 Data Modulation
2.2.6 Signal Transmission
2.2.7 TDCS Receiving Process
2.3 Simulation Results
2.3.1 Spectrum Estimation
2.3.2 Basis Function Generating
2.3.3 Data Modulation and Demodulation
2.3.4 Performance of TDCS System
2.4 Summary
Chapter 3 An improved TDCS based on Channel Equalization Technologies
3.1 Multipath Fading Channel Modeling
3.1.1 Fading Channel
3.1.2 Rayleigh Fading Channel Simulating
3.1.3 TDCS with Multipath Rayleigh Fading Channel
3.2 An improved TDCS based on Pre-equalization
3.3 An improved TDCS based on Post-equalization
3.3.1 Filtering LMS Algorithm
3.3.2 Decorrelation LMS Algorithm
3.3.3 Switch Field LMS Algorithm
3.4 An improved TDCS based on Pre-Post-Equalization
3.5 Simulation Results
3.5.1 Rayleigh Fading Channel Simulating
3.5.2 Pre-equalization results
3.5.3 Post-equalization results
3.5.4 Performances of TDCS with different equalization technologies
3.6 Summary
Chapter 4 Multipath Fading Channel Estimation based on FrFT
4.1 Mathematical Model and Principle of FrFT
4.2 Discrete Fractional Fourier Transform Algorithms
4.3 Channel Estimation based on DFrFT
4.3.1 Channel Parameters Estimation
4.3.2 Performance of the Estimation Algorithm
4.4 Simulation Results
4.4.1 LFM Detecting by FRFT
4.4.2 Rayleigh Fading Channel Estimation
4.4.3 Performance of the Estimation Algorithm
4.5 Summary
Conclusions
Recommendations for future work
References
