Applying Forward Error Correction in 66b Systems

摘要

A method and apparatus for applying Forward Error Correction (FEC) in 66 b systems. For a user data, the apparatus uses a method comprising the steps of generating one or more data blocks using a 66 b code format and the user data; generating one or more FEC parity blocks using the 66 b code format, wherein the parity is calculated over the data blocks; and generating an FEC codeword using the data blocks and the FEC parity blocks.

主权项

1. A method for processing forward error correction (FEC) in a 66 bit (66 b) system, the method comprising:
receiving codewords, each comprising X 66 b data blocks and Y 66 b FEC parity blocks following the X 66 b data blocks, wherein each of the X 66 b data blocks comprises a first 2-bit header and a 64-bit data unit, wherein each of the Y 66 b FEC parity blocks comprises a second 2-bit header and a 64-bit parity unit, wherein each of the second 2-bit headers differs from the first 2-bit headers, and wherein X is an integer and Y equals four; and looking for a repeating pattern in the codewords by detecting 2-bit headers in the codewords to determine whether the codewords are locked.