基于FFT的认知无线电频谱感知matlab代码.zip

## Real-time Spectrum Sensing for Cognitive Radio using FFT This code simulates real-time spectrum sensing for a cognitive radio system using the Fast Fourier Transform (FFT). It generates a simulated available spectrum and performs FFT analysis to visualize spectrum occupancy and identify potential channels for transmission. **Features:** * Simulates spectrum occupancy with three sinusoidal signals representing different frequencies. * Calculates the FFT of the simulated spectrum to obtain its frequency domain representation. * Plots both the time-domain (available spectrum) and frequency-domain (spectrum sensing) representations for visual analysis. **Requirements:** * MATLAB https://www.mathworks.com/ **Instructions:** 1. **Save the code:** Save the provided code as a `.m` file (e.g., `cognitiveradio.m`). 2. **Run the code:** Open MATLAB and navigate to the directory containing the saved file. Execute the script using the `run` command: ```matlab run cognitiveradio.m