Simulation and Measurement Correlation Study for 112 Gbps PAM4 High-speed Links

Base band signal delivery is demanding over 100 Gbps data rate. Hence, simulation and measurement correlation is necessary to ensure the quality of the design. In this work, we focus on 112 Gbps and even higher signal delivery board designs to discuss critical issues affecting simulation accuracy, measurement reliability, and correlation result analysis. Port setups, boundary definitions, probe selections, and result expectations are included in this study. Multiple channels’ correlation results in both spectrum and TDR domains will be presented. This paper serves as a ground truth reference to the correlation status for 112 Gbps channel designs.