That type of signal cannot be represented as a Digital Waveform but can be represented as a standard waveform. One way to create such a waveform is to generate a random signal and add it to the binary waveform. That is what the attached VI does.
This VI also shows two ways to attempt to recover the original data from the noisy signal. In Waveform Graph 2 a simple comparison to a threshold = 0.5 is used. This worsk quite well until the noise amplitude exceeds 0.5. Waveform Graph 3 shows the signal after running it through a low pass filter. Waveform Graph 4 shows the binary result from the same kind of comparison to a threshold of 0.5. Note the phase shift of the edges. This rarely produces spurious pulses until the noise amplitude gets above 0.6 but the timing errors may be significant.
