Patent ID: 11901954
Assignee: MAXLINEAR, INC.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An apparatus of a passive optical network (PON) receiver configured to perform electrical duobinary demodulation in a PON network, comprising:
an electrical duobinary receiver comprising a receiver circuit configured to receive an optical signal and convert the optical signal from an electrical duobinary signal format into a binary signal based on a plurality of decision thresholds, and
a decoder circuit that is configured to receive the binary signal and sample the binary signal based on an over-sampled binary signal and provide soft information derived from an output of a clock data recovery circuit,
wherein the decoder circuit comprises a forward error correction (FEC) decoder configured to receive the soft information output signal, and generate a bit sequence based on the soft information.