PAM4 encode

PAM4 encoding is a modulation technique used in high-speed data communication systems. It stands for Pulse Amplitude Modulation with four levels. In PAM4 encoding, each symbol represents two bits of data, and the amplitude of the pulse can take on four different levels. This allows for higher data rates than traditional binary encoding, which only has two levels of amplitude. PAM4 encoding is commonly used in optical communication systems, such as fiber optic networks, to transmit data at speeds of 100 Gbps or higher.