ERROR−CORRECTION MULTIPLEXING APPARATUS,ERROR−CORRECTION DEMULTIPLEXING APPARATUS,OPTICAL TRANSMISSION SYSTEM USING THEM,AND ERROR−CORRECTION MULTIPLEXING TRANSMISSION METHOD

摘要

An optical transmission system includes a first demultiplexing circuit (11) and a second demultiplexing circuit (12) for demultiplexing STM−64data which has been input so as to generate parallel data, a frame generation FEC encoding circuit (13) for performing an error−correction encoding calculation for the row direction of the matrix formed by the parallel data, adding the error−correction code as the calculation result to the parallel data, performing an error−correction encoding calculation in the line direction of the matrix formed by the parallel data, and adding the error−correction code as the calculation result to the parallel data, and a first multiplexing circuit (14) and a second multiplexing circuit (15) for multiplexing the parallel data which has been subjected to the error correction encoding and outputting it as an FEC frame.