Signal transmission method and communication equipment

The invention discloses a signal transmission method and communication equipment, and relates to the technical field of signal transmission. The communication device can convert to-be-sent data into an image, preprocess the image and then convert the image into data for modulation. Therefore, it can be ensured that the reliability of the transmitted radio frequency signal is high. Moreover, the to-be-sent data can be preprocessed in an image processing mode, so that the data processing efficiency is improved.