Analog modulation is one of the hot topics in current research. Digital technology cannot completely replace analog technology, and analog modulation is the basic method of communication. Researchers have found and proved that the anti-noise capability of the receiver can measure the reliability of the system, but there is still a gap in the research on the anti-noise performance of different modulation modes. Based on MATLAB, this study analyzes the influence of different modulation methods on the anti-noise performance by using program design and analyzes the anti-noise performance of each modulation method by contrast analysis and control variables, and compares the performance of each modulation method. Through the experiment of this study, it is found that the modulation regime gain G of different amplitude modulation modes is different, so each mode has different anti-noise performance. These different modulation modes have advantages and disadvantages, so in practical application, it is necessary to choose the appropriate modulation mode according to the demand.
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