"通信系统中数字调制系统的MATLAB仿真及性能分析"

ervating the waveforms in time and frequency domain during modulation and demodulation processes, the impacts of each component on modulation performance are analyzed based on the modulation principles. Lastly, the performance indicators such as bit error rate, signal transmission rate, signal-to-noise ratio, bandwidth occupation of various modulation systems are compared and evaluated comprehensively using simulation results. The reliability of simulation models is demonstrated by comparing the performance with theoretical calculations. This study provides a comprehensive analysis and simulation of digital modulation systems, aiming to improve the understanding of modulation techniques and enhance the performance of communication systems. Keywords: digital modulation, analysis and simulation, MATLAB, Simulink.