Low-crosstalk multi-input digital mixer based on randomization processing

The invention provides a low-crosstalk multi-input digital mixer based on randomization processing, which performs random rearrangement on N paths of input signals and an input phase of a CORDIC module by generating a pseudo-random binary sequence so as to increase the randomness of signal processing. In addition, the system also generates a 1-bit random number as a selection signal to determine whether to perform 90-degree phase rotation on the NCO signal output by the CORDIC module, thereby further enriching the random characteristics of the signal. Harmonic components of a specific frequency are reduced through phase scrambling. Before a signal enters the multiplier, the output phase of the CORDIC module is corrected to ensure the accuracy of the CORDIC module; the input signal is then multiplied by the NCO signal. And after the multiplication operation is completed, the N paths of output signals are reordered according to an original sequence so as to maintain the consistency and traceability of the signa