A computer-implementable method comprises a matrix-based approach to generating in parallel a plurality of realistic simulatable signal vectors, which vectors include the addition of amplitude noise and/or timing jitter and encoding. Each channel in a parallel bus can be populated in a matrix, with each row comprising ideal voltage values for the channel, and the columns comprising bits of the sequence of voltage values for that channel. Encoding can be employed to modify the data in the matrix. Amplitude noise and/or timing jitter can then be applied to each channel (row) in the matrix. This modifies the time basis from a bit basis as used in the matrix to a time-step basis. With such modification accomplished, each row in the matrix can be transformed into simulatable vector, which vectors can then be simulated in parallel to test, the robustness of the parallel bus of which the channels are part.