合并方式 Resources

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This project implements DS-CDMA system simulation in three-path Rayleigh fading channel environment. Key components include: (1) Code-division pilot-assisted channel estimation with equal-gain combining and maximal ratio combining receivers, measuring BPSK BER performance; (2) Single-dwell sliding correlation timing synchronization method with custom S-Function implementation; (3) Frequency synchronization scheme with custom S-Function design. The simulation analyzes relationship between bit SNR and channel estimation MSE, BER performance, timing synchronization accuracy, acquisition probability, and frequency synchronization error.

MATLAB 238 views Tagged
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5. In a three-path Rayleigh channel for Direct Sequence Spread Spectrum: (1) Design a specific code-division pilot-assisted channel estimation method for DS-CDMA with receivers employing Equal Gain Combining and Maximal Ratio Combining. Implement Simulink simulations to measure BPSK bit error rate performance, plot bit-to-noise ratio vs. channel estimation MSE curves, and plot bit SNR vs. BER curves. Explain the physical significance of the two combining schemes at BER=0.01. (2) Assuming frequency synchronization is achieved, design a specific single-dwell sliding correlation timing synchronization method for DS-CDMA. Implement Simulink simulation using custom S-Function code to analyze timing synchronization accuracy and plot bit SNR vs. acquisition probability curves. (3) Assuming timing synchronization is achieved, design a specific frequency synchronization method for DS-CDMA. Implement Simulink simulation using custom S-Function code to plot bit SNR vs. frequency synchronization error curves.

MATLAB 246 views Tagged
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