APPARATUS AND METHOD FOR FORWARD ERROR CORRECTION OVER A COMMUNICATION CHANNEL

摘要

There are various drawbacks by using existing OTN (Optical Transport Network) frames for communication between OTN cards. Such drawbacks might for example include high latency, low robustness, and/or high coding rate. According to embodiments of the present disclosure, systems and methods are provided for modifying an OTN frame (or creating a new frame with data from the OTN frame) prior to transmission by an OTL (Optical channel Transport Lane) in order to address some or all of the foregoing drawbacks. Note that this embodiment can make use of existing hardware (e.g. hardware used for generating the OTN frame, and the OTL used for transmission).

主权项

1. An apparatus comprising:
encoder circuitry configured for receiving an OTN (Optical Transport Network) frame, removing FEC (Forward Error Correction) parity from the OTN frame, re-structuring data from the OTN frame, creating new FEC parity locations, and generating FEC parity for the new parity locations before the OTN frame is transmitted by an OTL (Optical channel Transport Lane) over a communication channel; wherein the encoder circuitry is configured for generating the FEC parity in a manner that compensates for bit shuffling performed by the OTL.