| 摘要 |
PURPOSE: A forward error correction system based on high-performance concatenated BCH(Bose-Chaudhuri-Hocquenghen) and a correction method thereof are provided to compensate for errors generated in a channel by using forward error correction using a concatenated BCH code. CONSTITUTION: Initial source data is encoded in a BCH outer encoder(310) of 8 channels. A parity generated is saved in a designated location of each OTU4 frame. Encoded data is interleaved in an interleaver(350). The interleaved data is re-encoded in a BCH inner encoder(320) of 32 channels. Concatenated encoded codes are transmitted along a transmission path(380). A reception terminal decodes in an exact reverse order. Corrected source data is obtained from the output of the BCH outer decoder(340). [Reference numerals] (310, 340) BCH(3920,3824,8) outer encoder; (320, 330) BCH(996,956,4) inner encoder; (350, 370) Interleaver; (360) De-interleaver; (380) Transmission path; (AA) Source data; (BB) Corrected reception data
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