| 摘要 |
PROBLEM TO BE SOLVED: To provide a high quality and high speed optical communication system for avoiding occurrence of error floor by making error correction on a number of residual errors caused by soft decision decoding of an inner code in accordance with an outer code for suppressing an increase in a transmission rate even on a transmission line where a higher bit error may occur. SOLUTION: The present invention relates to an error correcting device in an optical communication system that transmits a transmission frame formed by adding an overhead and an error correction code to informational data, the device uses a concatenated code or a product code of at least two error correction codes as an outer code, and an error correction code for soft decision decoding as an inner code. COPYRIGHT: (C)2011,JPO&INPIT |
