Step 1: The asynchronous data transmission noisesignal is decomposed, the SNR, interference power anddetection threshold of any number of interference sourcesare determined, and the noise interference signal isanalyzed [15].Step 2: The obtained scale coefficient'1,kCis used toreconstruct the wavelet coefficient''1,kdand a new signalsignew−is obtained. If the signal conforms to theconditions constrained by formula (9), skip to step 4,otherwise proceed to the next step.Step 3: The previous step is repeated. Every time thedetail coefficient decomposition is completed, a newsignal will be obtained to verify whether the maximumvalue of the signal can meet the conditions constrained byFormula (9). If not, further decomposition will be carriedout until the requirements are met.