Signal Integrity verification of complex high-speed interconnects via Waveform Relaxation

We present a Waveform Relaxation approach for fast transient simulation of electrically long high-speed channels. The proposed technique is based on a two-level transverse and longitudinal partition of the coupled interconnect. All couplings and feedback from terminations are represented as correction sources, which become explicit in a Waveform Relaxation framework. We show that the proposed schemes are consistent and allow for very efficient implementations. Simulation results show speedup factors of up to two orders of magnitude with respect to circuit-based (SPICE) solvers.