Patent ID: 8495475
Filing Date: 2013-07-23
Classification: H03M,H04J,H04L

Abstract:
1. An FEC (Forward Error Correction) frame structuring device in an optical communication system that transmits or receives an FEC frame structured by adding an FEC code to a data frame including information data and an overhead as an optical signal, the FEC frame structuring device comprising: a multi-lane distributing unit that distributes a data frame to be transmitted to n (n is a positive integer) lanes; n FEC coding units, one for each of the n lanes, each of which performs FEC coding of the data frame distributed by the multi-lane distributing unit independently for each of the n lanes to generate an FEC frame; a multiplexing unit that multiplexes the FEC frame from the n FEC coding units to m (m is a positive integer) channels for the optical signal; a demultiplexing unit that demultiplexes the m channels of the received optical signal to the n lanes; n FEC decoding units, one for each of the n lanes, each of which performs FEC decoding of the FEC frame demultiplexed by the demultiplexing unit independently for each of the n lanes; and a multi-lane synchronizing unit that synchronizes the n lanes with each other after the FEC decoding performed by the n FEC decoding units to reconstruct the original data frame, wherein n is dividable by m.