多径 Resources

Showing items tagged with "多径"

1. Rayleigh_Doppler_singlePath.m generates single-path Rayleigh fading using 6 different methods with comparative analysis, recommending Method 6 as optimal; includes power spectrum output code. 2. Rayleigh_Doppler_multiPath.m produces frequency-selective fading based on multiple paths' delays and intensities; both programs provide power spectrum visualization capabilities for channel characterization.

MATLAB 284 views Tagged

This study implements channel estimation under OFDM framework, testing performance in frequency-selective Rayleigh channels with five multipath components and generating corresponding channel estimation performance curves. The implementation includes algorithms for pilot insertion, least-squares estimation, and mean square error calculation.

MATLAB 265 views Tagged

Spectrum sensing based on energy detection. Due to multipath and shadowing effects in practical channels, the performance of individual cognitive user spectrum sensing is degraded. Therefore, cooperative spectrum sensing among different users is required to mitigate these effects. This design requires implementing a collaboration mechanism where two users perform cooperative spectrum sensing to improve primary user detection rates, reduce detection time, and achieve agility gain. Simulation results must be provided, including energy calculation algorithms and decision fusion techniques.

MATLAB 281 views Tagged

Channel estimation for OFDM systems, particularly focusing on time-varying channels severely affected by multipath and Doppler effects, with excellent algorithm convergence properties

MATLAB 228 views Tagged