What’s the Difference Between NRZ and PAM? (.PDF Download)

This is part of the  Communication Series: What’s the Difference: Serial Communications 101

Read this article online.

PAM-4, which could be a catalyst for reaching 400-Gb/s Ethernet, will also likely find homes in high-speed serial interfaces such as FibreChannel. Pulse amplitude modulation (PAM) is a way to pack more bits into the same amount of time on a serial channel.