An improved noise cancellation system with additional noise as input is introduced that can effectively resolve the problem of signal crosstalk during actually EMI testing.

Based on the analysis of wavelet transform and crosstalk signal singularity detection algorithm,the research analyzes the frequency of crosstalk signal occurred in the design of printed circuit board and then proposes a method of detecting frequency of crosstalk signal source.

Iterative Decision Feedback Equalizer for Coded ISI Channels;